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Three Mile Island Memories

theodp writes "Thirty years after the partial nuclear core meltdown at Three Mile Island, Robert Cringely describes the terrible TMI user interface, blaming a confluence of bad design decisions — some made by Congress — for making the accident vastly worse. While computers could be used to monitor the reactor, US law prohibited using computers to directly control nuclear power plants — men would do that. So, when the (one) computer noticed a problem, it would set off audible and visual alarms, and send a problem description to a line printer. Simple, except the computer noticed 700 things wrong in the first few minutes of the TMI accident, causing the one audible alarm to ring continuously until it was shut off as useless. The one visual alarm blinked for days, indicating nothing useful. And the print queue was quickly flooded with 700 error reports followed by thousands of updates and corrections, making it almost instantly hours behind. The operators had to guess at what the problem was."

309 comments

  1. Job's got it right.... by ColdWetDog · · Score: 1, Insightful

    TMI wasn't caused by a computer failure but the accident was made vastly worse by an error of computer design. Specifically, TMI-2 had a terrible user interface.

    See, See. UI is important!!!!

    (Stares complacently at his Mac)

    --
    Faster! Faster! Faster would be better!
    1. Re:Job's got it right.... by arth1 · · Score: 4, Insightful

      I don't blame the UI at all. I bleme the belief that the goal of an UI is to lower the required understanding (and thus salary) of the operators.
      How the UI worked is irrelevant. Operators who understood what they were doing would have checked what needed to be checked, and taken the precautions the situation warranted, no matter what kind of warnings were lost because of a bad UI.

      Alas, the way for an electric company CEO to get big bonuses isn't by spending more money on smart people, but cutting costs which makes the short-term investors happy. So they spend $50k on an idiot-proof interface, and hire an idiot. The problem is that Nature is a whole lot better of churning out interface-proof idiots than programmers are at making idiot-proof interfaces.

      It's high time that Western society started valuing knowledge and understanding again, and not just ability to study for requirement tests. Reinstate the journeyman/master system and accredited guilds, and ditch college diplomas as the worthless piece of gilded paper they are.

    2. Re:Job's got it right.... by Anpheus · · Score: 5, Insightful

      If your user interface lags behind by two hours and the UI is the only way to find out about the extremely complicated and intricate details coming out of a myriad of sensors that are inaccessible to people for safety reasons... I suppose you might be entirely wrong.

      In this case, yes, the user interface was necessary for the operators to do their job. Are you going to tell me that submarine operators should rely on their "gut feeling" rather than a measurement of external pressure or depth to determine whether the submarine is safe? These are jobs that can't be done by even the most skilled operator because the information is completely walled off from them for the safety and integrity of the facility.

      As far as I can tell, you're advocating that we should hire psychics to determine the safety of the nuclear plant and pay them exorbitantly because spending a single dime on a good interface is wasted money. Sometimes, a $50,000 idiot proof interface is exactly what's called for, rather than intentionally using outdated technology and hoping a printer will provide information fast enough to prevent imminent disaster.

    3. Re:Job's got it right.... by juenger1701 · · Score: 1

      triple click

      'nough said

    4. Re:Job's got it right.... by grasshoppa · · Score: 1

      I'm not sure anybody would argue that UI is not important. The frustration stems from the fact that the UI is as important as it is, and is done as poorly as it often is.

      I can't tell you the number of times I've had to figure out some arcane system just to change a minor setting. Hours have been spent tracking down a minor check box, because the UI was designed horribly.

      --
      Mod me down with all of your hatred and your journey towards the dark side will be complete!
    5. Re:Job's got it right.... by timeOday · · Score: 4, Insightful

      I don't blame the UI at all. I bleme the belief that the goal of an UI is to lower the required understanding (and thus salary) of the operators.

      I think you got it backwards. They didn't want to withold information from humans or remove control from them, so they didn't automate enough and the humans in the loop got swamped with more than they could handle.

    6. Re:Job's got it right.... by neBelcnU · · Score: 1

      The UI's unimportant? Did I read that right?

      Try a wrench with a razor-blade handle. (Nice for tight places, hard on the user.)

      Actually, nature can only create one idiot per year per production-unit (arbitrarily called "a family"). Organizations (arbitrarilty called "corporations) could invest many orders-of-magnitude more labor in the same calendar period into a UI.*

      Sure, the utility company's cheapness-bonus is bad. Loss of training is bad. Lowering wages are bad. But you're committing the same fallacy you criticize Cringley for*, oversimplification.

      *Apologies to the Gammar N...uh..."grammarians"** for that sentence, I hope you use it to full benefit.

      **Godwinians, the same for the footnote above.

      (All memes covered? Check! Flame on!)

    7. Re:Job's got it right.... by Captain+Splendid · · Score: 2, Funny

      I bleme the belief that the goal of an UI is to lower the required understanding (and thus salary) of the operators.

      Why do you hate stockholders?

      --
      Linux, you magnificent bastard, I read the fucking manual!
    8. Re:Job's got it right.... by amori · · Score: 5, Informative

      TMI wasn't caused by a computer failure but the accident was made vastly worse by an error of computer design. Specifically, TMI-2 had a terrible user interface.

      See, See. UI is important!!!!

      I'm a nuclear engineer and I think the use of the term UI for the control room is somewhat 'simplistic'. I personally think a major issue was over design in a certain area (redundant alarms), and lack of safety systems that would prevent the core from melting even with a LOCA in place. It was two hours after the shutdown when the fuel melting began at TMI-2. This was a scenario where the operators couldn't understand what was happening. Now from an operator's perspective (who sits in the operator room) you're not looking at a "UI" in the traditional CS sense. Here is an image of a control room: http://www.ornl.gov/info/ornlreview/v38_1_05/images/a11_controls_full.jpg The events leading up to the disaster started on the secondary side (non-core) leading to a LOCA (Loss of Coolant Accident). For those unfamiliar with the term "secondary side". The secondary side of a Nuclear Power Plant is similar to that of any power generating plant, meaning the secondary side does not contain the reactor core.

    9. Re:Job's got it right.... by NoobixCube · · Score: 4, Insightful

      Right. If I need a nuclear reactor managed, I'll call you. Good to know the old talent of understanding exactly what the state of a nuclear reactor is by looking at a rock isn't lost. I'm just going to go and plug myself into my other computer now and manipulate it with my mind. Screens and command lines are for pussies, I can feel what it's doing well enough.

      --
      Admit it. You post strawman arguments as AC so you get modded Insightful for refuting them, rather than Troll
    10. Re:Job's got it right.... by innocent_white_lamb · · Score: 1

      If your user interface lags behind by two hours and the UI is the only way to find out about the extremely complicated and intricate details coming out of a myriad of sensors that are inaccessible to people for safety reasons... I suppose you might be entirely wrong.
       
      Isn't that the premise of Heinlein's Blowups Happen? Or am I thinking of a different story...

      --
      If you're a zombie and you know it, bite your friend!
    11. Re:Job's got it right.... by markimusk · · Score: 1

      Wow, did they design that control room based on the Original Enterprise bridge or what???

    12. Re:Job's got it right.... by Anonymous Coward · · Score: 0

      do you just put an apostrophe before the s in any word ending in s? Jobs is his name! it's not a contraction. there is no implied ownership. just plain old Jobs. if we were talking about Jobs' computer we still wouldnt put it before the s.

    13. Re:Job's got it right.... by rannala · · Score: 1

      I bleme the belief that the goal of an UI is to lower the required understanding (and thus salary) of the operators. How the UI worked is irrelevant. Operators who understood what they were doing would have checked what needed to be checked, and taken the precautions the situation warranted, no matter what kind of warnings were lost because of a bad UI.

      In an enviroment like this you really need both, trained personnel and a decent UI. The goal of the UI should not be to reduce understanding and cost, but to support the people making the decisions with the best information available. Even the most talented professionals can only make educated guesses if they have no situational information whatsoever and the only feedback is boom/no boom.

      The problem is that Nature is a whole lot better of churning out interface-proof idiots than programmers are at making idiot-proof interfaces.

      And that is exactly why you don't use programmers to design a UI.

    14. Re:Job's got it right.... by Tyr_7BE · · Score: 1

      This never would have happened if the operators were using a shell.

      Just saying.

    15. Re:Job's got it right.... by notamisfit · · Score: 1

      This. Most of the US civilian nuclear power industry is, to say the least, heavily influenced by the military nuclear power industry and the cult of personality surrounding Admiral Rickover. If nobody is in control, nobody can be held accountable when the fan hits the shit.

      --
      Jesus is coming -- look busy!
    16. Re:Job's got it right.... by Bigjeff5 · · Score: 2, Interesting

      That control room is very similar (if a bit larger and whiter) to the control rooms in gas plants, oil rigs, and pump/flow stations in oil fields today. The stuff may seem old as heck, but really a lot of that stuff you can't just replace with a fancy new computer. The best you can do in the control room is upgrade to digital displays and consolodate sections a little bit. But that may not even be ideal, because the analog systems will be able to run for a lot longer during a power failure than a digital will, and that's a BIG deal.

      One thing you CAN do is send all the information in that control room to a fancy new computer, and then you only need a couple hands-on operators at the plant in case things go very wrong. The rest can be handled by operators sitting in front of a few monitors back at home-base.

      I know you didn't really say it, but I'd wager you were thinking it, and you've got to realize that is not a giant computer. It is a giant control room. It's not like you can replace the steering wheel of your car because you've got a new engine.

      --
      Security is mostly a superstition... Avoiding danger is no safer in the long run than outright exposure. - Helen Keller
    17. Re:Job's got it right.... by gumbi+west · · Score: 1

      your assumption that this was the only method of getting information from the reactor is incorrect. The computer was there to add an additional layer of protection. Perhaps you RTFA which strongly implies this, but it is just false. There would be now way to operate (i.e. turn on or adjust) such a reactor with just a line printer.

    18. Re:Job's got it right.... by bornwaysouth · · Score: 1

      Oh, you mean he's talking about Steve Jobs.

      Surely the trivia of a pretty computer shape and snazzy screen layout are not really all that relevant to coping with a looming nuclear disaster. Even though I share your loathing of inappropriate apostrophes, there could well be a better interpretation - the Book of Job. There is a missing 'UI'.

      "Job's User Interface got it right."

      Now I did last read the Book of Job well before Three Mile island happened, but as I understand it, it is very relevant. Essentially Job had a direct line to God, it was one way, he had the status of a sewer rat, and shit happened to him. Swap 'Nuclear reactor' for God and any control room operator at TMI would have felt akin to Job. No control, shit happening, no clear picture why, and the Good Book of all Possible Procedures was not all that useful.

      Which leads to the question : Should people with strong Biblical beliefs be allowed to run a nuclear reactor. After all, the message of the Book of Job is that when shit happens, accept it, sit on your bum, and all will eventually come right provided you continue to claim the the System is Right.

      On the other than, the author of the original article wants engineers to be in charge, not administrators. As modern engineers may well have grown up playing games, they could have embedded in their thinking "Only 7 more meltdowns and I will have to start this game over again."

      Ok, had my say. Job's done.

    19. Re:Job's got it right.... by Anonymous Coward · · Score: 0

      Well, that's what you get for trying to run nuclear reactors using Microsoft DOS 3.1 :-)

    20. Re:Job's got it right.... by michaelmuffin · · Score: 1

      well there's no big screen or any chairs, so i'd say no

    21. Re:Job's got it right.... by NewbieProgrammerMan · · Score: 3, Interesting

      This. Most of the US civilian nuclear power industry is, to say the least, heavily influenced by the military nuclear power industry and the cult of personality surrounding Admiral Rickover. If nobody is in control, nobody can be held accountable when the fan hits the shit.

      Er, in what way is that "nobody is accountable" attitude reminiscent of the nuclear Navy? They're obsessive when it comes to accountability. Every time I saw any fecal matter hit a rotary device, they were pretty damn rigorous about getting to the bottom of it and finding out who did what.

      --
      [b.belong('us') for b in bases if b.owner() == 'you']
    22. Re:Job's got it right.... by timeOday · · Score: 1

      The Navy seems to have a better safety record than just about anybody, including the Air Force.

    23. Re:Job's got it right.... by notamisfit · · Score: 1

      That's what I meant. If a computer is controlling the reactor, one can't take the computer to Captain's Mast when it screws up.

      --
      Jesus is coming -- look busy!
    24. Re:Job's got it right.... by qwertyatwork · · Score: 1

      ...short-term investor

      What the hell? Ok let me see if I get this right. CEO's only cater to short term investors (ive never heard of them before) but not the board of directors that can fire them? And I guess from reading what you said the short term investors are the ones that give out the bonuses for CEO's?

    25. Re:Job's got it right.... by budgenator · · Score: 1

      Alas, the way for an electric company CEO to get big bonuses isn't by spending more money on smart people, but cutting costs which makes the short-term investors happy. So they spend $50k on an idiot-proof interface, and hire an idiot. The problem is that Nature is a whole lot better of churning out interface-proof idiots than programmers are at making idiot-proof interfaces.

      I have a hard time believing that, the electric power industry is the only industry that accounts for labor as a fixed expense. Another aspect of the electric industry that is highly unusual is that their rates charged to their customers is regulated by the states and a 10% profit is pretty customary. This means in order for the company to make an extra dollar in profit, they have to increase expenses 9 dollars!

      --
      Apocalypse Cancelled, Sorry, No Ticket Refunds
    26. Re:Job's got it right.... by moosesocks · · Score: 1

      TMI wasn't caused by a computer failure but the accident was made vastly worse by an error of computer design. Specifically, TMI-2 had a terrible user interface.

      See, See. UI is important!!!!

      (Stares complacently at his Mac)

      Ironically, the Mac OS EULA used to specifically prohibit you from running the software in a nuclear power facility, given that the operating system did not have proper protected memory facilities, making it inherently crash-prone.

      I remember stumbling across that tiny clause in a users' manual one time, and chuckled to myself.

      I believe that the clause was finally lifted with the release of OS X.

      --
      -- If you try to fail and succeed, which have you done? - Uli's moose
    27. Re:Job's got it right.... by The+Grim+Reefer2 · · Score: 1

      Ironically, the Mac OS EULA used to specifically prohibit you from running the software in a nuclear power facility, given that the operating system did not have proper protected memory facilities, making it inherently crash-prone.

      I remember stumbling across that tiny clause in a users' manual one time, and chuckled to myself.

      I believe that the clause was finally lifted with the release of OS X.

      I think Windows still states that you cannot use it in a nuclear power plant if you have JAVA installed.

    28. Re:Job's got it right.... by NewbieProgrammerMan · · Score: 1

      Ah, sorry for the misunderstanding--that definitely makes sense!

      --
      [b.belong('us') for b in bases if b.owner() == 'you']
    29. Re:Job's got it right.... by hawk · · Score: 2, Funny

      Hey!

      This is slashdot. Stop using facts to confront ignorant hysteria!

      hawk

    30. Re:Job's got it right.... by hawk · · Score: 3, Funny


      tmi2> sshutdown -r now
      sshutdown: Command not found.
      tmi2> halt -c
      halt: invalid option: -c
      Try `halt --help' for more information.
      tmi2> help halt
      help: Command not found.
      tmi2> shut it down, damnit!
      shut: demand not found.
      tmi2> assume nuclear defense position
      assume: Command not found.
      tmi2> stick your head between your legs
      stick: command not found.
      tmi2> *%&*^&$
      [from system: system going down for meltdown NOW!]
      [from system: assume nuclear defense positon]
      [from system: stick your head between your legs and kiss your ]

      ***line down***

    31. Re:Job's got it right.... by arth1 · · Score: 2, Insightful

      I am telling you that the operators should rely on their understanding of, interest for, and experience with the systems to make a decision what to check. Those who have merely been taught by the book or "given training" are incapable of this. They will be limited by what the book tells them, and fail to make the required decisions.
      As they did at Three Mile Island.

      The solution isn't to give the drones better training in being drones. It's not giving them a better interface. The solution is to not hire drones.

    32. Re:Job's got it right.... by sjames · · Score: 1

      In general, I would agree with you. Dumbed down interfaces are a problem. They lower the minimum skill level for basic operations, but can make advanced operations impossible for anyone, no matter how skilled.

      In the case of TMI, if the printer was 2 hours behind and a single tone warning was sounding continuously, it was a more or less useless interface.

      It's also silly to have a printer print a CODE that gets looked up in a book. Of course, back when designed, there may not have been a choice, but there better not be any more interfaces like that around.

      As for not letting computers run the reactor, I can understand the fears there, but surely the computer should have been able to scram it without human intervention.

    33. Re:Job's got it right.... by DocHoncho · · Score: 1

      ...there better not be any more interfaces like that around.

      Don't be silly! The new ones run Vista. The PORV indicator light is a Sidebar widget now.

      --
      Celebrity worship is a poor substitute for Deity worship and costs more to boot.
    34. Re:Job's got it right.... by Lershac · · Score: 3, Insightful

      Thats just wrong. For something as dangerous and deadly as a nuclear reactor, you practically want a monkey to be able to figure out what they need to do.

      You DO NOT require someone with a PHD to make the plant safe. You practically want the plant to be idiot proof and scram at the first blush of trouble.

      By making it require (rare) operators that understand the plant as a systemic whole, you make them irreplaceable, and from a design for long long long term safety point of view thats just wrong. Over time, understanding of large complex systems at plants degrades, and with a plant lifetime of 20-50 years you will see whole generations change in the lifetime of the plant.

      --
      Chuck
    35. Re:Job's got it right.... by bitrex · · Score: 1

      Please forgive my naive suggestion, but is there not a way that when shit starts hitting the fan in such a situation, there could be a "panic" button which tells the plant to "just insert all the control rods, put everything into the safest position possible and just shut everything down"? It would of course cost the power company millions to perform such an act, and I'm also assuming that since such a system doesn't seem to exist in the real world there must be good reason. Perhaps with a nuclear reactor it is impossible to know with 100% certainty what a totally safe shutdown condition is?

    36. Re:Job's got it right.... by bitrex · · Score: 1

      Every data sheet for every integrated circuit I've ever seen says that you can never ever use it for any system that has a possibility of causing danger to human life if it fails, i.e. aviation, nuclear power plants, medical equipment, et cetera. Since there is electronic equipment that engages in such activities, my question is who does one have to fuck to get a wavier on that caveat?

    37. Re:Job's got it right.... by Patch86 · · Score: 1

      UI just means "user interface". It is the interface between the abstract mechanics and data of the device and the person who is supposed to do something productive with it.

      That (awesome) control room you've posted is still a UI by that definition. It's a colossally complicate UI, and it's completely unlike the UI on a word processor, but you'd kind of expect that from a nuclear power plant...

    38. Re:Job's got it right.... by Anonymous Coward · · Score: 0

      You DO NOT require someone with a PHD to make the plant safe. You practically want the plant to be idiot proof and scram at the first blush of trouble.

      TMI did scram. The problem happened after the scram, when a pressure relief valve FAILED to close, despite being commanded to do so. The feedback indicator on the panel was wired to the COMMAND, not the SENSOR, so the operators were being given inaccurate/misleading information. A supervisor on another shift remembered this after a couple of hours and suggested they close a backup, which restored some sanity to the system. But by then other dumb decisions (turning down HPSI) had already been made.

      There wasn't just a single indicator - just a single computer interface. But the control and indicator panels also provide lots and lots of information.

      As for your desire that monkey should be able to run the plant - that's just stupid. Here's why: real-world industrial processes are complex. Thus you either allow some complexity in the controls, or you automate them to the point where there is nothing more than an "ON" button and let a monkey operate it. But someone with a PhD is still needed to design/install and maintain the automation.

      If you wish to limit systems complexity to what a monkey can do, then you will be limited to poo-flinging plants.

    39. Re:Job's got it right.... by Lershac · · Score: 1

      not to dumb down the operation of the plant to monkey-level... just the safety measures. There is a big red button next to most gas pumps in the US, for safety to turn the damn things off, they have way less complexity than the operation of the station itself.

      --
      Chuck
    40. Re:Job's got it right.... by Anonymous Coward · · Score: 0

      The details of the TMI-2 accident are all in the Kemeny Report. The event did start on the secondary side as a loss of feedwater event. The first problem was the Emergency Feedwater system was not propoerly returned to service after maintenance several days earlier. A set of valves was left closed and the indicator lights for their status were covered by a warning tag. As a result of heat not being removed from the primary (reactor) side, the primary side heated up and the pressure went up. The high pressure caused a valve to open to relieve the pressure increase but it failed to close when the pressure dropped. As a result the primary system was now losing coolant inventory. This continued until the Emergency Core Cooling System activated on low pressure. If the operators had walked away here this would have been a non-event. However, they were monitoring water level in the system using the level in tank called the pressurizer and were trained to not let this tank fill. They didn't realize they had the stuck open valve at the top of the pressurizer and that this indirectly lead to the high water level readings. They then shut down the Emergency Core Cooling pumps and the reactor eventually overheated and reactor core partially melted. At no time was the containment threatened by this sequence. The operators were inundated with lots of non-useful information during this time and the alarm printer was way behind. Everybody, needs to look back at what the state of computing was in 1979. This IBM mainframe and Apple II time folks. Computers were expensive and had limited capabilities. Does anybody remember the speed of a user terminal from those days?

    41. Re:Job's got it right.... by vlm · · Score: 1

      Perhaps with a nuclear reactor it is impossible to know with 100% certainty what a totally safe shutdown condition is?

      Little do you apparently know, you got the TMI accident pretty much correct. So, you've got multiple coolant pumps, which is great in case one breaks, and a spaghetti of interconnected valves connecting it all, which is great redundancy. Coolant is pouring out of the works but you cant figure out where it's coming from. Figuring out the exact configuration of valves and pumps based on past conditions and instruments is darn near that computer science "halting problem". Add in a healthy dose of "this can't possibly be happening". Oh, and some of your monitoring instruments and some of the valves are not entirely working, but you don't know which is broke and which is working, much less why. Each plant is designed completely new from the ground up, so its not like experience at a different plant will help, beyond the basic background knowledge that all share anyway. Everyone practices the heck out of small little simple easily defined and measured metrics, but combine a zillion simple rules and you get a chaotic unpredictable overall system. And since what is happening was not predicted at design time, procedure-izing it or automating it would only make the wrong decisions quicker. Some of the first guess/judgements made seemed correct, but some turned out wrong. After all, 99.99999% of the time in the past, your first judgment was correct, since you are a highly trained and experienced operator/engineer. Other than that.... no problem.

      Redundant systems are great, but anyone else ever notice that more data center power outages are caused by switchgear / batteries / generators than by electric company problems? That's what I've seen over a couple decades. Nukes are no different. The backup to the backup to the backup to the backup might spring a leak and take the whole thing down....

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    42. Re:Job's got it right.... by Anonymous Coward · · Score: 0

      TMI and all commercial reactors have safety systems that prevent the core from melting with a LOCA in place. The problem with TMI is that the operator misdiagnosed what was happening and manually shut off those systems that did turn on automatically. I can't believe that you are a nuclear engineer and don't know this.

    43. Re:Job's got it right.... by arth1 · · Score: 1

      You DO NOT require someone with a PHD to make the plant safe.

      Correct. You don't want someone with knowledge, you want someone with understanding. Which you seem to confuse.

    44. Re:Job's got it right.... by Hognoxious · · Score: 1

      Your ignorance is not a valid rebuttal.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    45. Re:Job's got it right.... by qwertyatwork · · Score: 1

      What am I ignorant about?

    46. Re:Job's got it right.... by Hognoxious · · Score: 1

      I guess you can use it, you just have to agree that it's not the manufacturer's fault, it's yours.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    47. Re:Job's got it right.... by moosesocks · · Score: 1

      I'd imagine that mil-spec ICs don't include those provisions.

      The reason why Mac OS Classic was explicitly prohibited from operating in these sort of environments was that it was incredibly unstable. Any sort of application crash or freeze would cause a kernel panic.

      --
      -- If you try to fail and succeed, which have you done? - Uli's moose
    48. Re:Job's got it right.... by Registered+Coward+v2 · · Score: 1

      TMI wasn't caused by a computer failure but the accident was made vastly worse by an error of computer design. Specifically, TMI-2 had a terrible user interface.

      See, See. UI is important!!!!

      I'm a nuclear engineer and I think the use of the term UI for the control room is somewhat 'simplistic'. I personally think a major issue was over design in a certain area (redundant alarms), and lack of safety systems that would prevent the core from melting even with a LOCA in place. It was two hours after the shutdown when the fuel melting began at TMI-2. This was a scenario where the operators couldn't understand what was happening. Now from an operator's perspective (who sits in the operator room) you're not looking at a "UI" in the traditional CS sense. The events leading up to the disaster started on the secondary side (non-core) leading to a LOCA (Loss of Coolant Accident). For those unfamiliar with the term "secondary side". The secondary side of a Nuclear Power Plant is similar to that of any power generating plant, meaning the secondary side does not contain the reactor core.

      Actually, the TMI event was the result of a number of things:

      Poor UI - the pressurizer valve that had no real position indication but was driven off of teh valve operator position; hence a closed indication did not mean the valve was closed but that the motor operator had gone to the close position. The valve in fact was still open

      Operator training - they did not realize the temperature indications downstream of the stuck open valve were at the temperature for high pressure steam that had dropped to atmospheric and hence cooled. They (incorrectly) thought it indicated the valve was closed because otherwise the temperatures should be near reactor temperature.

      Operator actions - they overrode safety systems because they thought the coolant injection would exceed brittle fracture limits (due to their assumption the valve was closed and thus risked overpressurization as the pressurizer went solid). Had they kept hands off the safety systems would have prevented the meltdown and core damage. Their training lead them to take the erroneous actions.

      Lack of information sharing within the nuclear operators - Davis Besse had a similar event that as properly handled; but the TMI operators were unaware of it.

      The safety systems were adequate to the task. As for the amount of alarms - there are a lot but operators learn to focus on the critical ones and take actions based on their training and interpretation of indications; which was lacking in the TMI event. The operators were setup by their training in this case, IMHO.

      --
      I'm a consultant - I convert gibberish into cash-flow.
    49. Re:Job's got it right.... by Anonymous Coward · · Score: 0

      Wow, did they design that control room based on the Original Enterprise bridge or what???

      well there's no big screen or any chairs, so i'd say no

      Ah, then an early model for a Jem'Hadar control room...

      - T

    50. Re:Job's got it right.... by Lershac · · Score: 2, Interesting

      Look fella, you just cannot have that requirement, that a person with full understanding of how the plant operates be on site at all times! What happens if the day shift all gets killed on the busride home from the company outing? or if there are say 10 guys who really have an understanding of the plant, and the plant gets bought out by some crap company and they decide to go pump gas for a living...

      WHO WILL MAKE SURE THE PLANT IS SAFE THEN?

      You have to design for the worst case.

      --
      Chuck
    51. Re:Job's got it right.... by QuantumPion · · Score: 1

      Please forgive my naive suggestion, but is there not a way that when shit starts hitting the fan in such a situation, there could be a "panic" button which tells the plant to "just insert all the control rods, put everything into the safest position possible and just shut everything down"? It would of course cost the power company millions to perform such an act, and I'm also assuming that since such a system doesn't seem to exist in the real world there must be good reason. Perhaps with a nuclear reactor it is impossible to know with 100% certainty what a totally safe shutdown condition is?

      The reactor WAS shutdown when it melted down. The thing is with nuclear fission, is that the decay products continue to produce a lot of heat that decays exponentially. An hour after inserting all the control rods and shutting down, the core is still producing something like 1-5% power.

      There are no less then 4 systems for keeping the core cooled. The primary coolant pumps for normal operation (2-4 of these depending on the size of the plant), the high-pressure safety pumps (one for each main coolant pump, each with TWO backups), the low-pressure safety pumps (if the entire system becomes depressurized due to a major catastrophe), and the residual heat removal system (for cooling the core while shut down). All of these systems were intentionally and mistakenly disabled by the operators at TMI.

    52. Re:Job's got it right.... by Hognoxious · · Score: 1

      I'd imagine that mil-spec ICs don't include those provisions.

      Good point. Though everybody knows they're the same chips anyway, just in a different box ;-)

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    53. Re:Job's got it right.... by Hognoxious · · Score: 1

      Short term investors, apparently.

      That's probably not an exhaustive list.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
  2. I, for one, welcome our new regulator overlords. by marco.antonio.costa · · Score: 1, Interesting

    Obama's 'new regulatory framework for the 20th century' crowd: Choke on that please.

    --
    Send your spendthrift head of state this
  3. So the problem @TMI was TMI. by tomhudson · · Score: 2, Interesting

    700 things wrong in the first few minutes of the TMI accident, causing the one audible alarm to ring continuously until it was shut off as useless. The one visual alarm blinked for days, indicating nothing useful. And the print queue was quickly flooded with 700 error reports followed by thousands of updates and corrections, making it almost instantly hours behind. The operators had to guess at what the problem was."

    So the problem with Three Mile Island (TMI) was Too Much Information (TMI). But I didn't read the article, as that would have been TMI.

    1. Re:So the problem @TMI was TMI. by Mashiki · · Score: 1

      So the problem with Three Mile Island (TMI) was Too Much Information (TMI). But I didn't read the article, as that would have been TMI.

      Sounds much closer to a breach of the KISS protocol.

      --
      Om, nomnomnom...
    2. Re:So the problem @TMI was TMI. by hawk · · Score: 1

      So you're saying that Three Mile Island had a date with San Clemente, then insisted on telling all the other reactors about every little detail in the morning?

      hawk

  4. Make sure you read the comments. by synth7 · · Score: 1

    If you read Cringely's article, make sure you also read through the comments, as there are several really insightful threads (and Bob says as much in his replies) posted by readers. Specifically the comments that talk about the fact that while the TMI design and control room layout was extremely bad, it was really an incompetent operations staff (or one operator) who did have the skills/training to kick the non-technical managers out of the room and use their expertise to get the situation under control.

    1. Re:Make sure you read the comments. by synth7 · · Score: 1

      ...DIDN'T have the skills...

      Ugh. Screw up one little contraction and the whole comment goes haywire.

    2. Re:Make sure you read the comments. by arth1 · · Score: 1

      the non-technical managers

      Why do we allow such abominations to exist?

    3. Re:Make sure you read the comments. by camperdave · · Score: 1

      Why do we allow such abominations to exist?

      Well, someone has to manage all the non-technical stuff. I certainly do not want to be caught in a stall with not a square to spare; or go to the cafeteria to find they are all out of soup crackers, or worse yet, coffee.

      --
      When our name is on the back of your car, we're behind you all the way!
    4. Re:Make sure you read the comments. by maxume · · Score: 1

      Those are secretarial tasks. The person taking care of those things doesn't need authority over anyone.

      --
      Nerd rage is the funniest rage.
    5. Re:Make sure you read the comments. by Denihil · · Score: 1

      woooosh.

      --
      WÌÌfÍ--ÍSÌÒÍ...Í...ÌHÌÍfÍÍÍ--ÍÍÍ
    6. Re:Make sure you read the comments. by interstellar_donkey · · Score: 1

      For a moment there I thought you were talking to power plant operators, reminding them to read the error messages being displayed. And thinking "Yeah, if only they had some user driven 'system failure' moderation, they wouldn't be in as much trouble.

      --
      The Internet is generally stupid
    7. Re:Make sure you read the comments. by camperdave · · Score: 1

      Dude, the 1950s are calling you. Secretaries don't fetch coffee.

      --
      When our name is on the back of your car, we're behind you all the way!
    8. Re:Make sure you read the comments. by maxume · · Score: 1

      The janitor? An intern?

      --
      Nerd rage is the funniest rage.
    9. Re:Make sure you read the comments. by The+Grim+Reefer2 · · Score: 1

      Dude, the 1950s are calling you. Secretaries don't fetch coffee.

      Dude, the 1970's are calling you. The politically correct title for secretaries is administrative assistant now.

    10. Re:Make sure you read the comments. by Anonymous Coward · · Score: 0

      Dude, the 1970's are calling you. The politically correct title for secretaries is administrative assistant now.

      He probably didn't want to give the poor guy culture shock.

  5. Ugh. by Virak · · Score: 1

    And because of this insignificant little incident that killed nobody, and had little to no effect on the health of people near it, nuclear power, a safe, clean, mature power generation technology, was (and continues to be) drastically set back. It's stuff like this that makes me worried that humanity as a whole will be just too incredibly stupid to make it through this century without killing ourselves in one of many ways.

    1. Re:Ugh. by Da+Cheez · · Score: 1

      It's stuff like this that makes me worried that humanity as a whole will be just too incredibly stupid to make it through this century without killing ourselves in one of many ways.

      As Three Mile Island shows, we'll avoid killing ourselves this century since we'll be too worried about danger and prevent progress (i.e., holding back nuclear power plant technology). We just won't make any progress. We're smart enough to survive, but too dumb to get any smarter in the immediate future.

    2. Re:Ugh. by LWATCDR · · Score: 1

      True and it made a so so movie a smash hit and convinced millions of people that a work of fiction was a documentary.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    3. Re:Ugh. by Jonner · · Score: 2, Interesting

      If you read the article, you'd realize it was a very significant wake up call. Death was narrowly avoided because the reactor containment vessel was over-engineered compared to the typical design. The tragedy is that the lesson the public learned was that nuclear power was too dangerous to use at all, when the reality was that it was poorly designed and mismanaged.

    4. Re:Ugh. by crackspackle · · Score: 1

      If like me your old enough to recall the movie "The China Syndrome", that was made an released just days before the Three Mile Accident occurred. At the time, that together with the accident was all people talked about. Yes, there were some people already protesting nuclear power but that managed to turn your everyday joe against it too. Never underestimate the power of a Hollywood melodrama to sway people.

    5. Re:Ugh. by AlHunt · · Score: 1

      >managed to turn your everyday joe against it too.

      Nah, "Everyday Joe" here, and I'm a 100% supporter of nuclear power, even though I was 17 miles away from TMI throughout the whole incident. Knowing then what we now know, I'd have probably edged a little further away.

      I'm sure TMI pushed a few fence-sitters over the edge. Not enough to make a vast difference, though, in my view. Feel free to break ground in my back yard for a new plant as early as Monday morning. I'll go move my car so the trucks can get through.

      --
      1 in 4 Maine children in struggle with hunger.
    6. Re:Ugh. by aengblom · · Score: 1

      Honestly, I thought Cringely's decision to try and tie TMI to the current financial crisis was a bit of a stretch, but it applies perfectly here. TMI officials took a huge risk [coulda wiped out a bunch of the Northeast] and only avoided catastrophe because of luck (the reactor had a strong than normal containment vessel.)

      Wall Street basically did the same the mortgage boom -- they just lost the bet. Now we're all paying.

      Where both failed was properly planning for what happened when something really went wrong. Wall Street was prepared for the failure for X% of people to stop paying mortgages because the values of homes "always" went up. I.E. A foreclosure just meant selling a house that was more valuable than when it was bought. This worked great, until home values fell and the taxpayers now get to fill that hole.

      At TMI operators were ready for one thing to go wrong and to fix it, but they weren't ready for when something really went wrong because their IT systems couldn't process the results of a real crisis.

      I get it that most engineers seem to be pro nuke, but forgive the public if they're a bit skeptical. Guess what, doctors always seem ready to operate, your stock broker always wants you in the market and your lawyer is willing to sue at the drop of a hat. People tend to have confidence in their own competencies.

      The job of the nuclear industry is to prove that their equipment will be safe -- even when operated poorly by greedy executives who might be willing to take the risk of huge amounts of wealth vs. a 1 in 10,000 year chance of a failure. That's a reasonable risk for the head of a nuke, but a terrible risk for a country with 100 reactors. (I.E. you will have a breach in the next 100 years.)

      It's not that all such employees will have such an attitude, but that at somepoint, someone will.

       

      --


      So close and yet so far from the world's perfect ID number
    7. Re:Ugh. by stephanruby · · Score: 0

      And because of this insignificant little incident that killed nobody, and had little to no effect on the health of people near it,

      A couple of days ago on NPR (I think it was), I heard of someone speaking of this book People Died at Three Mile Island.

    8. Re:Ugh. by MoonBuggy · · Score: 1

      You're on Slashdot, commenting on an article about nuclear safety. That puts you way way above the level of 'everyday Joe' in this context.

    9. Re:Ugh. by Aqualung812 · · Score: 1

      Death was narrowly avoided because the reactor containment vessel was over-engineered

      Sounds like it was engineered just right. Bean-counters often use "over-engineered" when something is built to withstand the rare but serious malfunctions. Instead, they'd rather things be built to be "good enough" to run fine most of the time. Problem is, a minor issue can become a critical one if you don't build your devices to withstand the rare but serious issues.

      For example, a failover server setup is 100% overbuilt...until the primary fails.

      --
      Grammer Nazis - I mod you "troll" unless you actually add something on-topic. Yes, I know I have mispellings in my sig.
    10. Re:Ugh. by Pinckney · · Score: 4, Informative

      Sounds like it was engineered just right. Bean-counters often use "over-engineered" when something is built to withstand the rare but serious malfunctions. Instead, they'd rather things be built to be "good enough" to run fine most of the time. Problem is, a minor issue can become a critical one if you don't build your devices to withstand the rare but serious issues. For example, a failover server setup is 100% overbuilt...until the primary fails.

      But it wasn't engineered this way to secure it against a partial meltdown. It was above average for reactor containment vessels actually in use at that time, and the average containment vessel would have failed. The only reason it was able to withstand it was that it happened to be on the final approach path of a former airforce base, and had originally been engineered to withstand a bomber crashing into it.

    11. Re:Ugh. by hairyfeet · · Score: 1

      The problem IMHO is twofold: One, without recycling the spent nuclear fuel you end up with some SERIOUSLY hot nuclear waste, and Two, thanks to NIMBY nobody wants that extremely hot nuclear waste(and rightly so). Now correct me if I'm wrong, but don't everyone else reprocess nuclear fuel until it isn't nearly as hot as the crap we end up with? If we reprocessed so we could show that the states won't end up with ton after ton of toxic waste that they will never be able to get rid of I'd bet nuclear power would be more popular.

      As someone who lives not too far from the 2 nuclear reactors in our state(AR1&2) and enjoys cheap power I'd say that you could solve a lot of the NIMBY problem if you allowed recycling of spent fuel. Because as it is I'd don't even want to know where we are storing that super hot crap in my home state. And who in their right mind would want something that hot stored in THEIR back yard?

      --
      ACs don't waste your time replying, your posts are never seen by me.
    12. Re:Ugh. by good+soldier+svejk · · Score: 0

      Actually, there were significant public health effects.

      --
      It is cowardly, and a betrayal of whatever it means to be a Jew, to act as a white man

      -James Baldwin
    13. Re:Ugh. by CrimsonAvenger · · Score: 1

      without recycling the spent nuclear fuel you end up with some SERIOUSLY hot nuclear waste

      Not really. It's SERIOUSLY hot for a couple of days at most. After that, it's hot enough to be dangerous to sleep on or eat, but otherwise not a big deal.

      After the decade it's supposed to sit in a cooling tank before it is shipped off to a storage site (which doesn't exist, since noone wants it around), it's still something you don't want to eat, but sleeping on a pile of it is no big deal, as long as you use clean sheets.

      That said, hell yes we should reprocess that stuff! Quite a lot of it is valuable! And after it's reprocessed, you're talking kilograms per year of waste, as opposed to gigatons per year of waste from a coal plant.

      --

      "I do not agree with what you say, but I will defend to the death your right to say it"
    14. Re:Ugh. by hobbit · · Score: 1

      nuclear power, a safe, clean, mature power generation technology

      On paper, yes. In practice, no.

      http://www.foe.co.uk/resource/reports/voodoo_economics.pdf

      --
      "Wise men talk because they have something to say; fools, because they have to say something" - Plato
    15. Re:Ugh. by Aglassis · · Score: 1

      If you read the article, you'd realize it was a very significant wake up call. Death was narrowly avoided because the reactor containment vessel was over-engineered compared to the typical design.

      Are you talking about the reactor vessel or the containment? These are different things. The containment is designed to keep fission fragments from being released to the public following a design basis accident. It is typically a hemispherical shell made of about a 5 ft thickness of reinforced concrete attached to a concrete base mat and lined with a stainless steel shell. The reactor vessel simply houses the core, forms part of the primary coolant pressure boundary, has a flange for connection to the vessel head, and contains connections for the hot legs, cold legs, and safety injection system. The reactor vessel is typically carbon steel with a stainless steel liner that is heat treated to reduce any stress at weld points. The reactor vessel is one of many things that fits within a containment.

      --
      Suddenly, the hairy finger of a familiar monkey tapped me on the shoulder. It was time.--G. T.
    16. Re:Ugh. by hobbit · · Score: 1

      Wall Street basically did the same the mortgage boom -- they just lost the bet. Now we're all paying.

      What are you talking about? Wall Street didn't "just lose the bet". They kept on making bet after bet, with money that mostly didn't exist, while ensuring that what money did exist was used to pay their rake. They knew full well that house prices couldn't rise indefinitely, because there's no hiding from the fact that an economic system predicated on infinite growth in a world of finite resources is not going to work.

      --
      "Wise men talk because they have something to say; fools, because they have to say something" - Plato
    17. Re:Ugh. by petermgreen · · Score: 1

      World population continues to grow, I see two outcomes of this

      1: the tech level rises sufficiantly to both suppport the extra people and raise living standards to a level that turns arround the population growth.
      2: the tech level does not rise sufficantly and huge numbers of people are killed off by famine/disease/war as a result of resource shortages

      --
      note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
    18. Re:Ugh. by cyn1c77 · · Score: 1

      And because of this insignificant little incident that killed nobody, and had little to no effect on the health of people near it, nuclear power, a safe, clean, mature power generation technology, was (and continues to be) drastically set back. It's stuff like this that makes me worried that humanity as a whole will be just too incredibly stupid to make it through this century without killing ourselves in one of many ways.

      But according to the article, the only reason it didn't kill anybody was because the containment vessel was overdesigned.

      Let's face it. Our society does not have the necessary follow through to manage nuclear power. We don't place enough value on public safety to properly train nuclear reactor operators, nor can we be relied upon to safely store nuclear waste for more than a human lifetime.

      It's a product of the capitalistic mindset: "As long as I get rich and live a happy life, who gives a shit what happens to people after I die."

    19. Re:Ugh. by Firethorn · · Score: 1

      Let's face it. Our society does not have the necessary follow through to manage nuclear power. We don't place enough value on public safety to properly train nuclear reactor operators, nor can we be relied upon to safely store nuclear waste for more than a human lifetime.

      You know, I just finished going over crash statistics for Model-T cars. Based on that evidence cars are far too unsafe for the American public to be driving. They have to be banned immediately.

      With the several HUNDRED nuclear power stations out there, we have [b]2[/b] major accidents. TMI resulted in major redesigns in US reactors. Since then, we haven't really had a problem. France and Japan have also managed to run successful nuclear power programs. Heck, even Russia cleaned up their act(a bit).

      Meanwhile, well, look up the death rate due to coal power. That costs thousands of lives a year, from pollution, mining accidents, etc...

      Statistically speaking, there will be a death rate with wind/solar, just you wait.

      Nuclear, compared to the cost competitive solutions, is clean and safe. A bit more expensive than dirty coal, less expensive per annual kwh produced than solar or wind. Can be planted just about anywhere. Produces power on demand, etc...

      --
      I don't read AC A human right
    20. Re:Ugh. by Lershac · · Score: 1

      Its stored on site. At almost every plant. As well as all the hot tools and other stuff that can never leave. They generally have an incredible selection of tools inside the fence there, and they can never leave, but if your pocket knife gets a little too much exposure.... its stays, so the tool collection just grows and grows.

      --
      Chuck
    21. Re:Ugh. by megaditto · · Score: 1

      Recycling nuclear fuel will not magically solve the 'hot' waste problem. You could re-use some of the material, but a lot of it has to be trashed.

      Sure, in theory it is possible to convert almost all of the waste into stable isotopes. That will never happen though, as it would be so expensive that it'd be cheaper to get all our energy from solar and wind, or fusion power, or dyson spheres (you get my point).

      One of the safest solutions I have read about involves a deep underground storage followed up with a nuclear explosion, creating a buttload of slightly radioactive rock deep down.

      --
      Obama likes poor people so much, he wants to make more of them.
    22. Re:Ugh. by stephanruby · · Score: 1
      As inflammatory as the book title may be, I'm actually surprised that my post was modded down to zero. It would seem that at the very least some newborn infants probably died as a result of Three Mile Island. Here is the relevant quote:

      In fact, the state of Pennsylvania hid the health impacts, including deletion of cancers from the public record, abolition of the state's tumor registry, misrepresentation of the impacts it could not hide (including an apparent tripling of the infant death rate in nearby Harrisburg) and much more.

    23. Re:Ugh. by QuantumPion · · Score: 1

      I don't know where you get your information but it is bogus. TMI uses standard design B&W reactor pressure vessels and containment buildings.

    24. Re:Ugh. by Jonner · · Score: 1

      The information about the relative strength of the containment vessel came from TFA:

      There were pressure spikes during the accident that would have cracked an average containment vessel, releasing radioactive gases into the atmosphere. Fortunately the Unit 2 containment wasn't average. TMI-2 was built on the final approach path to Harrisburg International Airport, a former U.S. Air Force base, and was therefore beefed-up specifically to withstand the impact of a B-52 hitting the structure at 200 knots. A normal containment would have been breached.

      Of course, Bob could be wrong.

    25. Re:Ugh. by Jonner · · Score: 1

      You sound very knowledgeable, but are apparently too lazy to RTFA, so I'll quote it for you:

      There were pressure spikes during the accident that would have cracked an average containment vessel, releasing radioactive gases into the atmosphere. Fortunately the Unit 2 containment wasn't average. TMI-2 was built on the final approach path to Harrisburg International Airport, a former U.S. Air Force base, and was therefore beefed-up specifically to withstand the impact of a B-52 hitting the structure at 200 knots. A normal containment would have been breached.

  6. Three-Mile Island by blind+biker · · Score: 3, Insightful

    Never has the gravity of an accident (of any kind) been so exaggerated. Before or after.

    --
    "The agriculture ministry is not in charge of Gundam" - Japanese ministry official.
    1. Re:Three-Mile Island by cowdung · · Score: 1

      Agreed. TMI is actually an example of safety success! Everything failed.. but the containment vessel kept us safe.

      So figure out what the other things are so you don't have to use your last line of defense (which could fail like in Chernobyl).

      I think people don't like nuclear mainly because of nuclear weapons. They don't understand that reactors are a fundamentally different technology.

    2. Re:Three-Mile Island by drinkypoo · · Score: 1

      I think people don't like nuclear because they don't understand how vastly much safer and cleaner it is than where the bulk of our power comes from today. Whether it's different from a bomb is pretty irrelevant. Some care about environmental damage and some care about personal danger; nobody cares precisely where it comes from.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    3. Re:Three-Mile Island by King_TJ · · Score: 2, Interesting

      Yep ... and as I think I posted once before in another Slashdot topic, I actually work with a guy who used to be an engineer at the firm that was ordered to make some piping for the Three Mile Island reactor, on a "rush" basis, when the problems first started there.

      He claims he spoke with people at the reactor site, asking them "How could something like this happen in the first place?" and was taken off to the side, and told that it would take a very specific sequence of adjustments to a number of valves to cause what happened. He replied, "Well, that doesn't sound very probable that could happen by accident?" He was then told that, "Yes, although it COULD theoretically happen, it seems HIGHLY improbable. It's also worth considering that the China Syndrome movie was just released in theaters shortly before this happened."

      So in short, seems very possible it was caused by someone wishing to sabatoge the project as much as anything.

    4. Re:Three-Mile Island by LWATCDR · · Score: 1

      Well that and there is a lot of money to be made in stopping it.
      Coal companies hate it.
      And hundreds or thousands of "activists" had made a good living protesting it.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    5. Re:Three-Mile Island by j-stroy · · Score: 1

      The solid containment structure was over-spec to keep things out (crashing b-52s) not to keep things in.

      The safety outcome was circumstantial, and a lucky lesson.

      Fundamentally radioactive transuranic waste with a half life of 220,000 years is why I don't like nuclear power.

    6. Re:Three-Mile Island by blind+biker · · Score: 1

      Fundamentally radioactive transuranic waste with a half life of 220,000 years is why I don't like nuclear power.

      And the solution to the long-lived nuclear waste is to build breeder reactors.

      India and Japan are going to kick everyone's butt in this area. If the rest of the world doesn't embrace this technology, India and Japan (and perhaps Russia and China) will have the cheapest energy in the world.

      --
      "The agriculture ministry is not in charge of Gundam" - Japanese ministry official.
    7. Re:Three-Mile Island by jonbryce · · Score: 1

      People don't like nuclear mainly because of the problems of disposing the waste, and of decommissioning the plants when they reach the end of their lives.

    8. Re:Three-Mile Island by Anpheus · · Score: 1

      The stuff we pull out of the ground has a half life of millions of years and if accidentally inhaled or consumed, just as deadly.

      The earth is chock full of radioactive goodness, and you're terrified of the fact that we're harnessing it? I don't get it.

      If you consider radioactive material safe when it's in a mine, why is it suddenly no longer safe when we put radioactive waste into a mine shaft?

    9. Re:Three-Mile Island by TheTurtlesMoves · · Score: 1

      Well even people a lot of people that are happy with nuclear power still don't want it their back yard.

      Yep its safe. You can you build at least 30 miles away from where i live ;)

      --
      The Grey Goo disaster happened 3 billion years ago. This rock is covered in self replicating machines!
    10. Re:Three-Mile Island by j-stroy · · Score: 1

      All the more reason to leave it in diffuse concentrations under the ground in the first place.

      Mine shafts and pits disturb surface and sub-surface water flows, so aside from run-off and legacy pumping issues in defunct mines (if the pump stops ever, groundwater gets contaminated) and radioactive dust blowing from tailings piles, we are left with concentrated and transformed nuclear fuel which we then have to keep safe somewhere for all time lest our descendants die horribly painful deaths from exposure to insanely miniscule quantities of radioactive material.

      Not a good gamble, and not our bet to place.

    11. Re:Three-Mile Island by Zancarius · · Score: 1

      Never has the gravity of an accident (of any kind) been so exaggerated. Before or after.

      Yes, exactly. Three Mile Island was used for years by the environmentalists to "prove" that nuclear power was unsafe, and effectively consisted of a bomb just waiting to go off. If they wanted a disaster, they should examine Chernobyl.

      Granted, we learned much about what worked--and what didn't--but I should think that Three Mile Island ought to be praised as successful! It averted creating a much worse disaster with consequences we would still be feeling today.

      --
      He who has no .plan has small finger. ~ Confucius on UNIX
    12. Re:Three-Mile Island by interstellar_donkey · · Score: 1

      If it was small enough and easy to maintain, I'd probably pay to build a micro nuclear power plant in my back yard. It'd have the added advantage of heating the pool from runoff water.

      --
      The Internet is generally stupid
    13. Re:Three-Mile Island by mdsolar · · Score: 0

      Like the increase in cancer for those living in the plume. http://www10.antenna.nl/wise/index.html?http://www10.antenna.nl/wise/467/4637.html

      Don't you hate it when nuclear power causes people to get sick and die?

    14. Re:Three-Mile Island by Plunky · · Score: 1

      David Hahn, is that you?

    15. Re:Three-Mile Island by good+soldier+svejk · · Score: 0
      --
      It is cowardly, and a betrayal of whatever it means to be a Jew, to act as a white man

      -James Baldwin
    16. Re:Three-Mile Island by LWATCDR · · Score: 1

      I have one in mine. Doesn't bother me. Beats a coal plant anyday and I like having electricity.
      How about this. If you live within say 10 miles of a nuclear plant you get power for half price?
      I bet people wouldn't complain so much then.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    17. Re:Three-Mile Island by ottothecow · · Score: 1
      I personally like where excelon stands on it...

      They have the right idea on it, they are firm promoters of nuclear power and are literally asking the government for a carbon tax on power generation. The clever little bit that they aren't saying out loud is that they are the largest nuclear generator (especially in IL) and have sold almost all of their coal-burning assets to third-party generating companies...they are sitting on a pile of clean power and begging for the dirty power to be taxed harder

      --
      Bottles.
    18. Re:Three-Mile Island by Beryllium+Sphere(tm) · · Score: 1

      I went a-Googling to rebut this -- after all, there had been a similar chain of events at Davis-Besse 18 months earlier -- but I didn't find anything that answers the questions that http://www.tmia.com/old-website/tmisab.html points out.

      The best argument against sabotage is that there was no way for a saboteur to know that it would work. Theoretically, even a complete loss of feedwater should have led to a scram and activation of one of the multiple emergency core cooling systems, disruptive but not destructive.

    19. Re:Three-Mile Island by The+Master+Control+P · · Score: 5, Insightful

      How many people get sick and die every single year due to the emissions of coal plants?

      How much radiation do we all absorb every single year due to the TONS of uranium and thorium oxide particles released by burning coal?

      The modern environmentalist movement is the epitome of intolerant idealism. Fossil fuels are a horrible and destructive source of power and they really are slowly poisoning the planet and everyone agrees about this. But then why the hell won't you let us get away from them? We try to build new hydroelectric dams, and we hear about how the lake will destroy the local ecosystem. We try to build wind farms, but Ted Kennedy sues because they'll get in the way of his view and they kill birds. We try to build solar plants in the middle of the Mojave desert, and the Sierra Club protests. We try to ramp up solar cell production, even, and protestors are demonstrating because of the chemicals used in silicon processing. We try to build nuclear power plants, but despite one western incident (which resulted in at most almost no casualties) happening in fifty full years, a safety record probably unmatched by any other industry in history, you refuse. We try to build a repository to get rid of the waste, and Harry Reid stops it. I have not a single doubt in my mind that when the first commercial fusion plant opens, you will be protesting because some of its components will eventually become radioactive and need to be disposed of.

      You demand that we engineers and scientists come up with a better alternative, then kick us in our faces every time because nothing is perfect. Nothing we ever come up with is ever going to be good enough, is it? Not even a magic-based reactor that poofs free electric out of nowhere! Well, welcome to real life. Enjoy your stay - America now burns more coal than ever because we aren't deploying the one presently-viable alternative (nuclear) that we have.

    20. Re:Three-Mile Island by DeadChobi · · Score: 1

      How is this any different than the gamble with our descendants lives from burning oil and coal? We are perpetuating an economy predicated on releasing huge amounts of pollutants into the atmosphere hoping that someday someone else will figure out how to harness clean energy sources efficiently. How is dropping waste into piles and letting it contaminate our groundwater any different from burning something and releasing waste into the atmosphere? At least we can move the nuclear waste. How do you propose we contain the soot and radioactive materials released in a coal plant?

      --
      SRSLY.
    21. Re:Three-Mile Island by mog007 · · Score: 1

      It's the bomb thing that really fucks up perception. You say "nuclear" and you get Hiroshima/Nagasaki, followed by Chernobyl, followed by Three Mile Island.

      People seem to be unable to grasp that technology can advance. How old is the youngest nuclear reactor in the United States? 30 years old? At least they've finally started talking about bringing back nuclear power with that request to build a new reactor down in Texas someplace.

    22. Re:Three-Mile Island by Blakey+Rat · · Score: 2, Insightful

      What they *really* are against is corporations, not the environment. See, nuclear plants, dams, wind farms, etc. are all controlled by corporations, and the environmental movement *hates* that. What I don't get is why they're still ok with the old corporations that own the coal mines and coal/gas power production.

      Being against corporations is fine, but don't pretend to be "environmentalists" if you aren't.

    23. Re:Three-Mile Island by sznupi · · Score: 1

      I won't mind at all.

      Actually, my country needs to build nuclear power plant in the coming decade, and I'll probably live in the general region of one possible contruction site (the other one, better on "technical" grounds, won't fly IMHO - this region has too conservative, too stupid and unruly masses, which ALREADY, 20 years ago, sabotaged construction of one practically finished nuclear power plant - one reactor was scrapped, the second sold for the price of scrap to Finland, where it works flawlessly to this day)

      And...I see this as a great opportunity. Stupid people will probably somewhat flee the area, and the plant itself will need a large number of people who are at least open-minded, both bonuses in itself. Which means also:
      - possibility of getting a nice house & strip of land for quite a good price
      - better schools perhaps
      - at the least: areas around nuclear power plants in my part of the world have quite often relatively unmolested nature/environment
      - milder microclimate

      The only thing I would mind is excessive noise associaced with any industrial installation...but 2 km or so should take care of this. I definatelly wouldn't mind the sight of cooling towers (and actually find them somewhat aesthetically plasing)

      --
      One that hath name thou can not otter
    24. Re:Three-Mile Island by interkin3tic · · Score: 1

      Agreed. TMI is actually an example of safety success! Everything failed.. but the containment vessel kept us safe.

      Er... seems like there would have only had to have been one more failure for it to actually be quite a big deal. I have no understanding of containment vessels, but I'm unwilling to believe that they are fail proof. Only one more failure after several things that weren't supposed to fail failed doesn't seem so unlikely.

      From my admittedly quite uninformed opinion, this sounds kind of like someone saying "The cuban missile crisis is a clear example of why mutually assured destruction during the cold war was a great idea: we DIDN'T nuke each other to kingdom come!"

    25. Re:Three-Mile Island by Anonymous Coward · · Score: 0

      People don't like nuclear mainly because of the problems of disposing the waste, and of decommissioning the plants when they reach the end of their lives.

      Actually, only about 1% of the total US nuclear waste (at least, the bad stuff) comes from power plants. The other 99% comes from our nuclear weapons.

    26. Re:Three-Mile Island by The+Grim+Reefer2 · · Score: 1

      Never has the gravity of an accident (of any kind) been so exaggerated. Before or after.

      If by exaggerated you mean covered up then yes I agree. But speaking as someone who lived in the area during that time and in high school afterward, I have to disagree. I truly find it surprising that for the most part the typical paranoid, conspiracy minded, "down with the man", tin foil hat wearing slashdotter who questions every official story will lap up the NRC reports on TMI like a kitten drinking a saucer of milk.

      I personally knew people who were employees at the plant during the accident that were dying of cancer and were well paid for their silence. Don't get me wrong, I fully support the use of nuclear power. It has certainly killed way less people than coal or oil have. But to say that TMI was exaggerated or that no one was harmed is just plain naive.

    27. Re:Three-Mile Island by 1zenerdiode · · Score: 2, Insightful

      No, they're anti-development. Environmentalism and anti-corporate bias are shills for a more generalized feeling of guilt and hatred for humanity itself. They're the equivalent of religious fanatics on the left end of the political spectrum. They feel the problem with humanity is the humans. We should stop breeding and die off since we don't deserve to live or consume. They should be generally ignored. Also, they don't know the definition of the term "baseload." It's a shame that wind farms can't operate on the verbal output of Congress or activists. And for the record, at least in the states, many wind farms are owned not by corporations, but by the landowners on which the turbines are situated. Mod the parent up. As an American, I know we'll get what we deserve -- other nations, less wealthy, will not entertain our environmental conceits if the alternative is subsistence agriculture. And we punish those engineers and scientists who try to help. -1zd

    28. Re:Three-Mile Island by Anonymous Coward · · Score: 0

      I say we burn environmentalists for fuel.

    29. Re:Three-Mile Island by spandex_panda · · Score: 1

      which resulted in at most almost no casualties

      You must be a statistician.

      --
      like phosphorescent desert buttons singing one familiar song
    30. Re:Three-Mile Island by The+Master+Control+P · · Score: 1

      Allow me to clarify: Which resulted in zero directly attributable deaths but none the less may have been a factor in a few later reported cancers. In any condition, the lasting effects of TMI are for all purposes zero compared to the harm caused by fossil fuel burning.

    31. Re:Three-Mile Island by Anonymous Coward · · Score: 0

      I understand your point, and I agree with it. But I think that there is a better way to get rid of burning coal: reduce the energy consumption.

      I like to say that 'sustainable growth' is a myth: nothing can grow indefinitely in our finite Earth. We need to stop increasing energy and resources consumption to become truly sustainable. If nuclear fusion would become feasible and cheap tomorrow, it would worsen the situation even more, because more energy will mean that more and more natural resources will be spent and wasted.

      The only solution I see is to lower energy and resources consumption by reducing world's population and growth until everything can be powered without burning any fossil carbon and everyone can be fed without needing so much energy.

      Achieving this proposal may lead to an economic disaster at first, but this is because of the current economy, whis is based in a myth (indefinite growth). There must be some kind of non growth-based economy.

    32. Re:Three-Mile Island by sjames · · Score: 4, Insightful

      It is odd that so many protest nuclear. Looking at things from an environmental standpoint, a modern fast reactor has high power density so it minimizes the land that must be bulldozed. It has no significant atmospheric emissions. Because of the nature of the waste, it won't be piled up outside waiting to leech into groundwater.

      With reprocessing appropriate to a fast reactor, the waste is greatly reduced in bulk and remains dangerous for 500 years rather than thousands.

      The 'spent' fuel rods currently in storage at existing nuclear plants contain 95% useful nuclear fuel if re-processed for a fast reactor. That means that building a fast reactor and keeping it fueled now would result in a net REDUCTION of nuclear waste.

      Until now, reprocessing has been forbidden in the U.S. because it results in plutonium that could be diverted to weapons. The reprocessing to produce fuel for a fast reactor never produces suitable weapons material. The actinides that would make a bomb fizzle remain mixed with the plutonium at all times.

      We have actually seen close to a worst case nuclear accident. A terrible reactor design where the operators did every don't in the manual. It was a terrible event to be sure, but from an environmental standpoint, it seems to have created a nature preserve. By comparison, TMI was frightening but caused no real harm.

    33. Re:Three-Mile Island by khallow · · Score: 1

      Where's the evidence for this highly radioactive plume? As far as I can tell, these researchers are claiming levels of radiation poisoning almost to where people would start to die.

    34. Re:Three-Mile Island by JonBuck · · Score: 1

      I wish I had more to add than "right on". But you've put how I feel about modern environmentalism in a nutshell.

    35. Re:Three-Mile Island by Anonymous Coward · · Score: 0

      I'll admit that I wasn't even born when TMI happened, so my knowledge of the incident is limited. However, I did hear this interview recently: http://www.democracynow.org/2009/3/27/three_mile_island_30th_anniversary_of : which questions the amount of radiation emitted by the incident. Should what he claims be true, I'd think that the statement that 'nobody was killed' would be misleading, and 'caused no real harm' to not be true.

      "In fact, nobody knows how much radiation escaped from Three Mile Island. Nobody knows where it went. And nobody knows what the impact was. ... There were cancers, leukemias, birth defects, stillbirths, hair loss, unexplained lesions, rashes. It was like being in the middle of a post-Hiroshima nightmare. ... thereâ(TM)s just been two new studies released in Harrisburg this week. One indicates that as much as a hundred times more radiation escaped than the government and the industry have been willing to admit. And the other is that the statistics clearly show ongoing problems of cancer, leukemia, other radiation-related diseases."

    36. Re:Three-Mile Island by Anonymous Coward · · Score: 0

      The accident was not a huge deal in terms of end result. Not much radiation was released. But it was far closer to a huge disaster than anybody at the time thought.

      Originally, people didn't think that a meltdown had occurred. It was only many years later during the cleanup that people realized a significant fraction of the core had indeed melted (about half) and ~20 tons had drained into the bottom of the containment vessel -- the start of a worst-case scenario where the vessel is breached. They slowed down the reaction just in time to stop it, but had they waited a few more hours before realizing what was going on (that much of the core was not covered by cooling water), the story would be completely different.

      Basically, they were lucky that the design was so over-engineered. That's the real triumph here. Three Mile Island is both an example of the safety of the design (that it survived so much abuse) and the fragility of the design (that a small problem coupled with operator error could come that close to yielding a worst-case scenario).

      I don't think it is fair to describe the accident as "exaggerated". That's too simple. Exaggerated in its effect on the public, yes, absolutely. Exaggerated in terms of what happened in the core, no. It was a genuine meltdown of part of the core. That fact was severely underestimated, if not denied, for almost 10 years until the bottom of the core was uncovered in the cleanup. At that point people were shocked it had gotten that bad.

    37. Re:Three-Mile Island by sjames · · Score: 1

      There seems to be evidence of some problems shortly after the TMI incident, but those could as easily be a result of stress from the panic as from radiation. There are a few reports of more serious problems, but they are vastly outweighed by reports of no problems. Given that when it happened, the "China Syndrome" was a big hit at the box office, I would have expected to hear more from the mainstream news (that was a lot less toothless than it is today) if there was anything to report.

      I'm tempted to file the more alarmist reports along with the advice that I should treat my house like a superfund sight if a CFL is dropped.

      It is notable that coal fired plants freely emit radioactive waste as a normal part of operation and with minimal supervision. If NRC standards were applied to all emissions, no coal fired plant could even consider reopening without a major refit.

    38. Re:Three-Mile Island by spankyofoz · · Score: 1

      I don't know about that. 9/11 springs to mind.

      --

      - There is no point, it's like a sphere -
    39. Re:Three-Mile Island by edisk1353 · · Score: 1

      Holy hostility, Batman.

      Sure, there are knee-jerk environmentalists. Take any movement and I'll find you someone who takes that movement to its logical extreme. Christianity has Falwell. Conservatism has Coulter. Ad nauseum.

      But I think you're missing that one of the largest, most prevalent streams of environmentalism isn't anti-nuclear, isn't anti-fossil fuel, perhaps isn't even anti-pesticide. It's simple conservation.

      And you know, there are plenty of people working on things like low-emissions automobiles, more-insulative materials, and safer waste dumps.

      Aren't these guys also scientists and engineers?

  7. Like the old saying goes... by camperdave · · Score: 1

    Like the old saying goes... Never send a man to do a machine's job.

    --
    When our name is on the back of your car, we're behind you all the way!
  8. Bad Computers! by PPH · · Score: 1

    While computers could be used to monitor the reactor, US law prohibited using computers to directly control nuclear power plants -- men would do that.

    Given the state of automated control back in those days, that's not really a bad policy. Even today, aircraft autopilots (triply redundant) are not reliable enough so that Boeing requires that pilots must be able to disconnect them and fly manually.

    Granted, UIs have improved immensely since mid 1960's technology. The 700 alarm problem is easily mitigated with modern SCADA systems that can distill such volumes of data and pinpoint a few possible root causes. But I don't think you want you'd want to automate the whole thing and leave it in the hands of the same, poorly trained operators they had in 1979.

    --
    Have gnu, will travel.
    1. Re:Bad Computers! by TheTurtlesMoves · · Score: 1

      Even today, aircraft autopilots (triply redundant) are not reliable enough so that Boeing requires that pilots must be able to disconnect them and fly manually.

      Rubbish. Pilots are there because people feel safer. And if the fly-by wire systems etc fail, your plane crashes, pilot or no pilot. So you have 2 modes of failure. If the pilot is insisting on flying into the ground and/or software bugs.

      Commercial pilots are trained to work like a machine. I would be just as happy if they weren't there.

      --
      The Grey Goo disaster happened 3 billion years ago. This rock is covered in self replicating machines!
    2. Re:Bad Computers! by marco.antonio.costa · · Score: 1

      If you RTFA you would see the point the author makes of how simple nuclear reactors are in comparison to other much more complex automated processes AT THE TIME. Chemical plants, in his example.

      Now you just can't compare automating flight to a nuclear plant. A plane autopilot is orders of magnitudes more complex.

      I think the question is: do you really DON'T want to automate everything and run the risk of leaving any decision making to a poorly trained or just hungover operator?

      --
      Send your spendthrift head of state this
    3. Re:Bad Computers! by DCstewieG · · Score: 1

      Not really knowing anything about the modern capabilities of auto-pilot systems, I'm curious what you think would have happened with the Hudson River incident if there had been no human pilot around.

    4. Re:Bad Computers! by NewbieProgrammerMan · · Score: 1

      Commercial pilots are trained to work like a machine. I would be just as happy if they weren't there.

      I wouldn't, at least not right now. Any machine^H^H^H^H^Hsoftware doing a job is going to be limited by the imagination of the spec writers and developers, and (for trainable systems) by the situations the trainers thought to put the system through.

      I wonder if anybody's built any machines that would have done as well as this guy? Yeah, there's shitty pilots out there, but I'm still a big fan of having a biological "backup" available to override the machines, because (again, right now) they're still better at handling unforeseen situations.

      --
      [b.belong('us') for b in bases if b.owner() == 'you']
    5. Re:Bad Computers! by RudeIota · · Score: 1

      Commercial pilots are trained to work like a machine. I would be just as happy if they weren't there.

      ... if you happen to know anyone who can design an autopilot system that can account for nearly as many external/environmental variables as a human being -- I would too.

      --
      Fact: Everything I say is fiction.
    6. Re:Bad Computers! by timeOday · · Score: 1
      I tend to agree but look at the recent splash-landing on the Hudson. Computers beat humans' stick-and-rudder skills hands down, but the decision to glide over to the Hudson (instead of ...what? crash-landing in a crowded city, I guess?) saved everybody. You could try to make the statistical argument that other crashes caused by human error outweigh this, but I don't know what the numbers are.

      Anyways, airline pilots will be the last to go, after military recon pilots, bombers, cargo, and finally fighters, then civilian cargo flights. After a few decades and billions of miles flow autonomously in those roles, then we can talk about airliners without pilots.

    7. Re:Bad Computers! by PPH · · Score: 1

      Now you just can't compare automating flight to a nuclear plant. A plane autopilot is orders of magnitudes more complex.

      Simpler. Been there, done that. Since the early days of 'two crew' flight decks and the requisite automation (757, 767, 747-400). I've also worked around (but not on) nuclear plants and their designers. The physics of a nuke may be simple, but the number of subsystems, alarms and whatnot in a plant is pretty substantial.

      --
      Have gnu, will travel.
    8. Re:Bad Computers! by pipingguy · · Score: 1

      In many cases, 95% is good enough. Other times, well...

      There are lots of manager-types who work a plan to 95% knowing full well that resolving the remaining 5% will take at least as many resources and time as getting to 95%.

    9. Re:Bad Computers! by colinrichardday · · Score: 1

      We have drone aircraft that can recon/bomb.

    10. Re:Bad Computers! by Anonymous Coward · · Score: 0

      For someone who claims to have been working on autopilots, you have little idea what is going on.

      It isn't Boeing who say that you have to be able to disconnect the autopilot nor do they mandate triply redundant. That is all done by the FAA and EASA. The number of redundancies is related to probability of failure and the effect of failure - that is why you will also find double or quadruple redundancies. Also, with the new standard for designing complex electronic hardware (see DO-254), it is not only redundancy that you need for all critical systems but entirely dissimilar designs. No software components nor hardware is allowed to be the same to avoid common cause failures. Now imagine how many different ways for all the aircraft subsystems (believe me, there is A LOT), you have to think of different ways of calculating everything.

      I would much rather do the same for simple processes like a nuclear reactor.

      (An avionics safety engineer)

    11. Re:Bad Computers! by PPH · · Score: 1

      Now imagine how many different ways for all the aircraft subsystems (believe me, there is A LOT), you have to think of different ways of calculating everything.

      I know. I've done FMEAs on aircraft subsystems. On one relatively simple subsystem it was about a thousand page report. But we were still doing them by hand about 5 years after I had worked on a real time SCADA system for a utility that could backtrack through an FTA to determine fault locations. With computers. Meanwhile, Boeing took about another decade to realize that failure tree analysis could be autometed and used for real time diagnostic systems.

      The folks at Boeing (and Airbus) are nice people. But I don't want then anywhere near a nuke.

      --
      Have gnu, will travel.
    12. Re:Bad Computers! by Anonymous Coward · · Score: 0

      Rubbish. Pilots are there because people feel safer.

      ...says a Hudson recent accident surivivor

  9. And when you put computers in charge ... by Ihlosi · · Score: 1

    ... of safety-critical systems, they do things like shut off the engines on a plane in mid-flight due to a sensor malfunction. Damned if you do, damned if you don't.

    1. Re:And when you put computers in charge ... by Fierlo · · Score: 1
      Except you're talking about a reactor here. Computers can be put in charge pretty easily. In fact, they're quite good at it.

      CANDU reactors, in particular, are controlled directly by two computers (one controlling, the other performing the same calculations/operations, just not controlling anything unless there's a problem). I'm sure you can find instances where the reactors have been tripped spuriously, but you'll struggle to find an instance of a reactor being allowed to run wild due to a computer. Operators aren't even credited with any action in CANDUs for the first 30 minutes (or something like that) after an accident.

    2. Re:And when you put computers in charge ... by Ihlosi · · Score: 1
      CANDU reactors, in particular, are controlled directly by two computers (one controlling, the other performing the same calculations/operations, just not controlling anything unless there's a problem).

      Redundant controllers won't help you if you don't recognize a faulty sensor. In case of the plane shutting off engines in mid-flight, the autopilot determined that the plane had touched down (due to a faulty altitude sensor) and cut the engine power.

      Heck, now that I've read up on the TMI incident, it wasn't even a faulty sensor, it was a inherently flawed sensor design (showing only whether a solenoid was powered or not, not whether the associated valve was open or not).

    3. Re:And when you put computers in charge ... by Yetihehe · · Score: 1

      it was a inherently flawed sensor design (showing only whether a solenoid was powered or not, not whether the associated valve was open or not).

      Yeah, they should use extended boolean in such cases.

      --
      Extreme Programming - Redundant Array of Inexpensive Developers
    4. Re:And when you put computers in charge ... by sjames · · Score: 1

      Unlike in an airplane, it is acceptable for a computer controlling a nuclear reactor to default to shutting it down.

  10. Jimmy Carter by bgeer · · Score: 2, Interesting

    Our President at the time, Jimmy Carter, was also a micro-manager and a former nuclear engineer:

    U.S. Navy reactor operators, the sort who served under Jimmy Carter in the 1950s,

    Is not and never was a nuclear engineer, much less did he command a nuclear sub. He served as an enlisted man on several diesel-electric subs and started, but did not complete, a Naval class in nuclear engineering. He resigned from the Navy (as a lieutenant) before any nuclear subs were commissioned.

    The FEMA guys were just plain stupid.

    NO U

    1. Re:Jimmy Carter by Ottair · · Score: 1

      Education After high school, Carter enrolled at Georgia Southwestern College, in Americus. He would later apply to the U.S. Naval Academy and, after taking additional mathematics courses at Georgia Tech, he was admitted in 1943. Carter performed well at the academy, and graduated 59th out of 820 midshipmen.[5] Naval career Carter served on surface ships and on diesel-electric submarines in the Atlantic and Pacific fleets. As a junior officer, he completed qualification for command of a diesel-electric submarine. He applied for the U.S. Navy's fledgling nuclear submarine program run by then Captain Hyman G. Rickover. Rickover's demands on his men and machines were legendary, and Carter later said that, next to his parents, Rickover had the greatest influence on him. Carter has said that he loved the Navy, and had planned to make it his career. His ultimate goal was to become Chief of Naval Operations. Carter felt the best route for promotion was with submarine duty since he felt that nuclear power would be increasingly used in submarines. During service on the diesel-electric submarine USS Pomfret, Carter was almost washed overboard.[6] After six years of military service, Carter trained for the position of engineering officer in submarine USS Seawolf, then under construction.[7] Carter completed a non-credit introductory course in nuclear reactor power at Union College starting in March 1953. This followed Carter's first-hand experience as part of a group of American and Canadian servicemen who took part in cleaning up after a nuclear meltdown at Canada's Chalk River Laboratories reactor.[8][9] Wikipedia, your friend. Upon the death of his father, James Earl Carter, Sr., in July 1953, however, Lieutenant Carter immediately resigned his commission, and he was discharged from the Navy on October 9, 1953.[10][11] This cut short his nuclear powerplant operator training, and he was never able to serve on a nuclear submarine, since the first boat of that fleet, the USS Nautilus, was launched on January 17, 1955, over a year after his discharge from the Navy.[12]

  11. So, the computer notices things are wrong ... by Ihlosi · · Score: 1
    Simple, except the computer noticed 700 things wrong in the first few minutes of the TMI accident, causing the one audible alarm to ring continuously until it was shut off as useless.

    ... and the humans chose to ignore it? How is that the computers fault?

    If the alarm goes off in a nuclear plant, operating procedure should say: Check briefly if the computer is acting up, and then shut the whole frickin' plant down. Why wasn't it done? Let me guess: It costs a whole bunch of money. So, the accident happened due to greed.

    1. Re:So, the computer notices things are wrong ... by WaXHeLL · · Score: 1

      It's not entirely simple to shut a nuclear plant down... You can't just hit a few keystrokes and the thing turns off.

      And with only one visual alarm, and one audible alarm, you have no clue what is happening.

      --
      The troll with karma.
    2. Re:So, the computer notices things are wrong ... by jonbryce · · Score: 2, Informative

      A nuclear plant isn't like a gas plant where you can turn off the tap.

      If you have a nuclear reaction that is going out of control, then you have to get it in control. Shutting the plant down would mean you don't have the ability to use things like the control rods to do this.

    3. Re:So, the computer notices things are wrong ... by NewbieProgrammerMan · · Score: 1

      Simple, except the computer noticed 700 things wrong in the first few minutes of the TMI accident, causing the one audible alarm to ring continuously until it was shut off as useless.

      ... and the humans chose to ignore it? How is that the computers fault?

      Yeah I don't quite get that bit either. And they *did* have an entire room full of monitoring equipment, not just a solitary line printer, so I'm not sure the computer's involvement is as big as Cringlely's making it out to be.

      If the alarm goes off in a nuclear plant, operating procedure should say: Check briefly if the computer is acting up, and then shut the whole frickin' plant down. Why wasn't it done? Let me guess: It costs a whole bunch of money. So, the accident happened due to greed.

      Well, no--the reactor was shut down automatically by the control systems at the outset of the incident. If I recall correctly, they were at near full power when some event caused a main turbine trip and then a reactor shutdown. Because of the sudden removal of steam load, and because the reactor continues to produce a lot of heat even after shutdown, the resulting temperature/pressure rise in the primary coolant system caused a relief valve to open.

      This relief valve stuck open (and apparently nobody recognized this for quite some time), so eventually a steam bubble formed in the reactor vessel. As the pressure dropped, the coolant pumps began cavitating, so the operators shut them down to keep them from being damaged, and this removed the last major heat sink for the reactor. Then hot reactor still producing energy + no heat removal == meltdown.

      It seems to me to have just been operators not recognizing the state of their plant, either because they weren't familiar enough with it, or because they didn't have the right information available to them. Greed probably had nothing to do with the actual incident itself, unless you count the effect on the operators of non-engineering-knowledgeable management showing up to micromanage the situation (and I haven't ever read anything that made me think that would really have mattered all that much).

      --
      [b.belong('us') for b in bases if b.owner() == 'you']
    4. Re:So, the computer notices things are wrong ... by NewbieProgrammerMan · · Score: 2, Interesting

      Don't let Cringely convince you that he actually knows anything about nuclear power plants--those guys had a whole room full of alarms, gauges, meters, etc., giving them a lot of info about the whole plant.

      Shutting down the reactor could probably have been done by the operator within a couple of seconds by flipping a switch. IIRC, though, the automatic safety system shut it down at the beginning of the incident because it detected a situation that warranted it.

      --
      [b.belong('us') for b in bases if b.owner() == 'you']
    5. Re:So, the computer notices things are wrong ... by TheTurtlesMoves · · Score: 1

      The emergency shutdown is that simple. It can take a while to get it back on line again however (days, weeks or even longer depending on how many of the emergency shutdown systems are fired) and cost a pretty penny.

      --
      The Grey Goo disaster happened 3 billion years ago. This rock is covered in self replicating machines!
    6. Re:So, the computer notices things are wrong ... by NewbieProgrammerMan · · Score: 1

      Ah, there's a better description of the incident here, just so people don't have to take my crappy recollection at face value. :P

      --
      [b.belong('us') for b in bases if b.owner() == 'you']
    7. Re:So, the computer notices things are wrong ... by marco.antonio.costa · · Score: 1

      Yea yea, greed causes everything bad. You and the other selfless people living in their mom's basements should be given the wheels of the world.

      --
      Send your spendthrift head of state this
    8. Re:So, the computer notices things are wrong ... by daniel_newby · · Score: 1

      If you have a nuclear reaction that is going out of control, then you have to get it in control. Shutting the plant down would mean you don't have the ability to use things like the control rods to do this.

      No, the control rods are constantly forced into the core by passive systems (hydraulic pressure, gravity, springs), and only stay withdrawn because of active systems. If the active systems lose power, a few seconds later the control rods will be fully inserted. Many reactors also have pre-pressurized tanks of neutron absorbing fluid connected to the core, a sort of liquid control rod. Provided one of the redundant valves can be opened, that will also quench the nuclear chain reaction. (And I wouldn't be surprised to learn that the valves have a ratchet that makes them stick open until some poor bastard visits them in person with a special tool.)

      It's also worth pointing out that many safety systems have no self-protection features like circuit breakers, or even off switches where a well-meaning idiot might turn them off just because fire is shooting out. If a back-up cooling pump develops a short circuit or a bad bearing, it will continue to run until it destroys itself. The idea is that the protection equipment will cheerfully use itself up to protect the main plant.

    9. Re:So, the computer notices things are wrong ... by dunkelfalke · · Score: 1

      same shit happened in chernobyl - lack of useful information (and of course knowingly stupid design).

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    10. Re:So, the computer notices things are wrong ... by Anonymous Coward · · Score: 0

      I don't understand the article summary - there were lots of automated actions at Three Mile Island:

      The reactor trip at the start.
      The opening of the relief valve.
      The command to close the relief valve (which failed).
      The activation of the Emergency Core Cooling System when the pressure fell too far (which the operators foolishly shut off).

      If the operators hadn't interfered, it would probably had been fine. The water would have escaped through the stuck valve and been replaced by the ECCS.

      Unfortunately, the operators got confused by two things:

      The indicator implied that the relief valve was closed, but it merely said that it *should* have closed.

      Due to the stuck open valve, the water level indicator gave a false reading.

      I would have thought the rapidly dropping pressure despite increasing temperature would strongly imply a leak, as, in a sealed system, when temperature goes up, so should pressure. But they didn't seem to see past the water level indicator. A bit peculiar, as a small break LOCA is a perfectly concievable accident in a PWR and it's odd that they didn't recognise one.

      Basically, the automated responses were fine. It was the presentation of information to the operators that was flawed, as well as the operators' actions.

    11. Re:So, the computer notices things are wrong ... by Beryllium+Sphere(tm) · · Score: 1

      The shutdown was one of the first things that happened, in fact. That wasn't the problem.

      The problem is that the core continues to generate heat after the chain reaction stops and needs artificial cooling for many hours as fission products decay. Greed wasn't the reason for turning off the cooling system.

    12. Re:So, the computer notices things are wrong ... by Blakey+Rat · · Score: 1

      If the alarm goes off in a nuclear plant, operating procedure should say: Check briefly if the computer is acting up, and then shut the whole frickin' plant down. Why wasn't it done? Let me guess: It costs a whole bunch of money. So, the accident happened due to greed.

      You think there's just a big red button labeled "STOP" like on your band saw? I think nuclear power might be just a tad bit more complicated than that.

    13. Re:So, the computer notices things are wrong ... by Anonymous Coward · · Score: 0

      You roughly can. SCRAMming a core involves inserting all control rods. This'll stop any reaction near instantly (about 7%ish will remain due to decay heat). Some reactor designs are actually made in such a way that a runaway reactor will force more control rods into the reactor, thus preventing a catastrophe.

      Most SCRAM requirements are ALL rods into the reactor in 4 seconds or less.

    14. Re:So, the computer notices things are wrong ... by NewbieProgrammerMan · · Score: 1

      You're probably right: if the operator had just sat on his hands, things would have been better.

      As to inadequate presentation of information, somebody pointed out in the comments on Cringely's site that the oncoming operator figured out what was going on pretty much right away. It would seem the indications available were completely adequate to identify the casualty, but the guy that happened to be on watch when it happened didn't have as much of a clue as he should have.

      --
      [b.belong('us') for b in bases if b.owner() == 'you']
    15. Re:So, the computer notices things are wrong ... by Bigjeff5 · · Score: 2, Informative

      If you think you can just "turn off the tap" at a gas plant, you are sorely mistaken. Pressures start to build when you do that, so if you block the gas off in one section, it will build in another. You've got a lot of systems to kill before you can turn off the gas - the source must go first, then at about the same time pumps pushing the gas along (these may be in the same spot, which makes that easier), then you can kill any processing systems along the way, and then you can close the tap.

      If you DO have to close the tap first (a pipe failure that is leaking gas, for example) you've got to get a relief valve open and start burning your excess until you can get the gas re-routed or the rest of the plant shut down. If you don't, the plant goes bye-bye big-boom style. Where I work I'm about 1/4-1/2 mile from a flow station, and we're still in the blast radius of a catastrophic failure.

      Whereas, as others have pointed out, nuclear power plants do in fact have a 1-button shutoff mechanism that kills the reaction immediately. Then containment is a cinch, if costly.

      The problem was the alarm system + the reporting system was poorly designed, and the errors were of such magnituted that it actually looked like less of a problem than it was, and the operators had no way to confirm what the problem was. In a nutshell.

      Add to that the fact that, since re-starting one of these systems from a cold start (which is what pushing the little red button to cease the reaction would mean) costs millions of dollars, SOP is to try everything you can to fix the problem FIRST, and then, as an absolute last resort, you kill the reaction (or shut down the gas plant, it's the same reasoning). So if the alarm looks like a malfunction in the alarm system, and not in the process, they are certainly not going to shut down the system until the alarm is fixed or they verify the malfunction in the process.

      My question is, where was the redundant alarm system? Shouldn't that be a no-brainer for something with the damage potential of a nuclear plant? I mean, it might not have helped finding the problem, but it might have prompted the decision to shut down much sooner if BOTH alarm systems go out at exactly the same time.

      Mind you, this is based entirely on the comments in this thread and the article summary so some of this may have been covered already. Naturally I would never RTFA.

      --
      Security is mostly a superstition... Avoiding danger is no safer in the long run than outright exposure. - Helen Keller
    16. Re:So, the computer notices things are wrong ... by michaelmuffin · · Score: 1
      just a tad. the big red button is labeled "SCRAM"

      http://en.wikipedia.org/wiki/Scram:

      [...] the control rods are held above a reactor's core by electric motors against both their own weight and a powerful spring. Any cutting of the electric current releases the rods. A SCRAM rapidly (less than four seconds, by test on many reactors) releases the control rods from those motors and allows their weight and the spring to drive them into the reactor core, thus halting the nuclear reaction [...]

    17. Re:So, the computer notices things are wrong ... by PincushionMan · · Score: 1

      No no no. Chernobyl happened because operators were instructed to disable their protective mechanism, to test an untested protective mechanism. [see wikipedia]. Then (as part of their test) the were instructed (and proceeded) to pull nearly every control rod off the bottom of the reactor resulting in a prompt critical reaction (exponential neutron growth). During the whole course of their experiment, neutron level (the primary power indicator) was undetectable until the end. I think we calculated the time in college, and they had about four tenths of a second to respond (or four seconds, I forget). Couple that with the fact they really had no containment for the plant (a steel barn), and the reactor core blew the top and sent glowing radioactive rocks every which way. I don't know if they shut down the other plants during this casualty or not, but I think their all shutdown now.

    18. Re:So, the computer notices things are wrong ... by dunkelfalke · · Score: 1

      wikipedia is wrong at that bit - there is impossible to disable the protective mechanism and they tested a different thing (whether the energy output of the turbine at shutdown levels is enough to run the cooling pumps while the diesel generators are starting).

      then, as you said, neither the xenon poisoning, nor the neutron level were somehow indicated. the only thing that the operators have seen is a very low reactivity margin. with this information the operators decided that the reactor with that low reactivity margin cannot be operated anymore because if even some negative reactivity occurs it cannot be compensated because all the control rods are already up and the reactor should be shut down. but since the reactor should be shut down anyway when the experiment starts, that would be ok (or so they thought).

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    19. Re:So, the computer notices things are wrong ... by sjames · · Score: 1

      Of course, even a reactor that is scramed requires active cooling for a while, but it's a good first step when the reactor goes into an unexpected or unknown state. TMI scramed the instant the secondary coolant loop failed at the very beginning of the incident.

      The real cause of the problem was that stuck valve and an indicator light that indicated the control state of the valve rather than it's actual physical state. That is, it showed closed while the valve was physically open. All of the real problems flowed from that.

      There was a backup valve that could have stopped everything right there but it wasn't used for many hours because the operators mistakenly believed the indicator light was a positive indication (There's a UI error). The secondary indicators that could have immediately revealed the problem were out of the way and the operators were not trained to use them to verify the valve's state (another UI error).

      A computer system with a comprehensive set of inputs could have easily determined that rising temperature in the vent made no sense when the valve is closed and indicated the exceptional condition. Pointed in the right direction, the operators would likely have figured things out a lot sooner.

    20. Re:So, the computer notices things are wrong ... by PPH · · Score: 1

      A computer system with a comprehensive set of inputs could have easily determined that rising temperature in the vent made no sense when the valve is closed and indicated the exceptional condition. Pointed in the right direction, the operators would likely have figured things out a lot sooner.

      Not with a computer of 1970's vintage. Its likely that this system did no more than log data.
      Today, we have systems (we've had them for a few decades) that can compare real time data against an internal model, identify out of bounds conditions and infer probable failures. But back in those days, that was cutting edge computation. And its not likely that a nuclear plant would have been designed with its operation dependant on technology that was less well developed and less reliable than the nuke itself.

      --
      Have gnu, will travel.
    21. Re:So, the computer notices things are wrong ... by QuantumPion · · Score: 1

      It's actually extremely simple to shut down a nuclear reactor. There are trip switches in multiple places in the control room and elsewhere. All of the automatic safety systems can automatically trip the plant as well. The problem is that a nuclear reactor continues to produce decay heat from fission produces in significant amount for many hours after shutdown, and this heat must continue to be removed by the cooling systems.

  12. Bleh by NewbieProgrammerMan · · Score: 4, Interesting

    U.S. Navy reactor operators, the sort who served under Jimmy Carter in the 1950s, were selected primarily for their temperament. ... their Navy job--as at TMI--was to follow the manual. All knowledge was inside the book. So knowing the book was everything. Unfortunately knowing the book isn't the same as knowing the reactor. So knowing the book was everything. Unfortunately knowing the book isn't the same as knowing the reactor.

    No. Just fucking no. There's a significant (and necessary) emphasis on following procedures and getting the books out for any planned change to the plant to make sure you're doing things right. But Cringely makes it sound like nuclear operators are just slightly trained mouth-breathers that only know how to look things up in the book and do what it tells them. I can't speak for the civilian training, but the Navy does NOT do things that way.

    When something goes wrong, they depend on you having enough internalized knowledge about the plant, its controls, and its indicator systems to work out what's going on and (if necessary) do something about it. Once you've got stuff at least marginally under control, *then* you get the books out to check the applicable procedures to make sure you haven't forgotten something, and to figure out how to recover from whatever happened without causing any more problems.

    The Navy puts a lot of effort put into making sure their operators know how and why things work the way they do. They would never have got to the 21st century with the track record they have if all they did was train people to look at the book.

    --
    [b.belong('us') for b in bases if b.owner() == 'you']
    1. Re:Bleh by notarockstar1979 · · Score: 1

      I know when I went through Power School, then went to NNTP, they made me learn a ridiculous amount of crap that I never thought I'd use. Turns out I never used most of it. Looking back I am grateful they taught me all that they did (although I don't remember most of it now) because it could have saved my life and the lives of those around me.

    2. Re:Bleh by im_thatoneguy · · Score: 1

      Wasn't there an article published a few months back stating that checklists in the ER could save thousands of lives a year.

      I would say that's a pretty good argument for internalizing and checklisting to ensure you didn't forget anything. Just like the Navy procedure.

    3. Re:Bleh by QuantumPion · · Score: 1

      The nuclear power industry trains its operators in a similar manner to the navy. The whole plant is run like a naval ship in fact.

      When something goes wrong, they depend on you having enough internalized knowledge about the plant, its controls, and its indicator systems to work out what's going on and (if necessary) do something about it. Once you've got stuff at least marginally under control, *then* you get the books out to check the applicable procedures to make sure you haven't forgotten something, and to figure out how to recover from whatever happened without causing any more problems.

      This was the attitude that operators worked by pre-TMI. The TMI accident changed their whole approach and now they do the opposite of what you described. They have detailed procedures for how to handle any kind of normal operation or problem, and rely on their general knowledge of the plant to make sure that the procedure they are using is correct and applicable to the situation.

  13. Lessons from cryptography by nroets · · Score: 1

    Those days Congress passed a law banning computers from controlling the plant. Now days people think PBMRs are safer. Clearly a better solution is to allow engineers free reign, but require much more stringent reviews of proposed designs. Like the RSA cryptography challenges.

  14. This time, it's not Congress' fault by mkcmkc · · Score: 1

    This is just plain bad design, and not Congress' fault.

    If this alarming system--with the same crappy design--had been "directly connected" to the controls, god knows what would have happened.

    --
    "Not an actor, but he plays one on TV."
  15. Regulation and Bean Counting by burnin1965 · · Score: 3, Insightful

    Chemical plants were better designed than nuclear power plants in part because Congress did not legislate how the chemical industry designed their plants. But more importantly most chemical firms of that era had CEO's with engineering degrees. They had respect for the technology and the risk of misusing it. But that doesn't make the chemical industry blameless. With the off-shoring of manufacturing a lot of chemical production is now being done in places where there is little respect for the dangers of technology. The chemical industry's TMI was Bhopal. There will be more Bhopal's coming because those companies are now being managed by bean counters, not engineers.

    I wasn't there so I can't say Cringely is wrong about the government regulation of nuclear power, however, I have worked in the semiconductor industry which utilizes some of the deadliest chemicals known to man and their are mandated regulations from various government agencies, EPA, OSHA, etc., that result in the controls, interlocks, and containment systems used to make the industry safe. I'm also pretty sure that the issue in Bhopal was more a lack of regulation than a lack of respect for the dangers. There should have been powerful laws and inspectors to shut down the plant before it killed thousands.

    Where we both do agree is on the belief that we can expect more Bhopal and economic melt down events due to bean counter management. Over the past 20 years I've noticed a managerial shift towards a focus on cutting costs and less of a focus on the technology and science behind the manufactured products. In the past two years I've engaged in heated debates with peers and managers over the purpose and focus of engineering resources. Its seems that decision makers are forgetting that the core of a technology based manufacturing corporation is the technology not the cutting of fixed costs by reducing head count, wages, service contracts, etc. Accounting and business management are tools to support the core skills, they are not the core themselves. When accounting and business management undermines the ability of a technology based business to develop and manufacture the core technology of their business you can expect a gradual degradation of the business until it is no longer viable.

    1. Re:Regulation and Bean Counting by jabithew · · Score: 1

      There's also the attitude to regulation. In the chemical industry, in the UK at least, the emphasis is on the operator to prove that it's safe, not on the government to regulate where it's unsafe. This is a much more sensible and comprehensive system than regulatory micro-management.

      --
      All intents and purposes. Not intensive purposes.
    2. Re:Regulation and Bean Counting by Anonymous Coward · · Score: 0

      "In the past two years I've engaged in heated debates with peers and managers over the purpose and focus of engineering resources. Its seems that decision makers are forgetting that the core of a technology based manufacturing corporation is the technology not the cutting of fixed costs by reducing head count, wages, service contracts, etc."

      Ive gotten so fed up with this attitude that i now refuse to work for any company which has share holders. Publicly traded companies dont give a shit about customers, products, employees or longevity, they only care about short-term profits. Every publicly-traded company ive ever worked for has been a nightmare of ill-informed management making ineffective and dangerous decisions. These companies are not stable enough to support my lifestyle, so i dont even give them a 2nd glance now.

      I've even quit a few jobs when the company merged or went public, and then watched from a distance as it withered away.

  16. Just Plain Incompetance by ObsessiveMathsFreak · · Score: 1

    "Computers! Error! Component Failure! Congress! Unpredicatble! etc, etc, etc. Excuses, excuses.

    How hard can it be to monitor the temperature of a nuclear reactor? Apparently, this task is somehow beyond the competence of nuclear plant supervisors for some obscure reason. Blaming regulation is beside the point. A first year undergraduate engineering student would be able to build a reliable temperature monitor.

    --
    May the Maths Be with you!
    1. Re:Just Plain Incompetance by NuclearError · · Score: 1

      A first year undergraduate engineering student would be able to build a reliable temperature monitor.

      Right. Because there are so many combinations of materials that can withstand temperatures in the thousands of degrees F and the intense neutron flux in a commercial reactor core for any prolonged period. Core status is measured by the temperature of the water entering and leaving the core - the core power can be calculated by how much the water heats up. Safety limits are usually given in terms of power, because the behavior has to be calculated.

      --
      Nuclear engineers build weapons. Civil engineers build targets.
    2. Re:Just Plain Incompetance by Anonymous Coward · · Score: 0

      Monitor the temperature... and then figure out what's causing it and how to fix it. The operator will look at your temperature monitor, say "Oh, the core is getting hot." Now what? Is a pump not working? Did a valve get stuck? Should we scram the reactor or do we just need to pump more coolant in? You need more information to fix the problem.

      Not to mention things can go wrong without overheating the reactor. There was a relief valve at TMI which stuck open, and it was never noticed... until the relief valve blew and stayed open and caused more problems. Backup pumps, broken sensors, so many things could be going wrong, and your precious temperature monitor won't tell you a thing until it's far too late.

    3. Re:Just Plain Incompetance by khallow · · Score: 1

      How hard can it be to monitor the temperature of a nuclear reactor?

      As the Three Mile Island story indicates, it can be very hard to measure even simple things in a complex system when you are bombarded with information, most which is obselete or irrelevant.

  17. Wolverine by penguin_zoo · · Score: 0, Offtopic

    It was Wolverine

    1. Re:Wolverine by Kamokazi · · Score: 1

      You're not supposed to know that until May 1st! Dirty pirate!

      And really, it was Striker's fault. He lacked the skills to control Weapon IX properly. If he wasn't such a noob, he could have pwned Wolverine. Should have bought one of those newfangled mouse thingies from Apple...best way to control something in the first person, of course. Or wait for IBM's so he could alt-fire with a right-click.

      --
      As our way of thanking you for your positive contributions to Slashdot, you are eligible to disable Slashdot 2.0.
  18. US Naval Academy Curricula by tjstork · · Score: 1

    Uh, I think the guy is needlessly cynical. I know a lot of Navy guys that run our nukes and, they do know them inside and out.

    --
    This is my sig.
    1. Re:US Naval Academy Curricula by LWATCDR · · Score: 1

      The entire article was riddled with errors. The training of navy nuclear personal was and is top notch.
      This was in 1979 I don't thin chemical plants had level of automation that the article claims. Mainframes where about as powerful as a $300 PC. The first military fly by wire aircraft the F-16 was just entering service. The shuttle still had not made it's first flight.

      Let's not forget that TMI was built in 1968 so it was designed in the 60s. It was mostly 1960s tech.
      Yes it was a terrible design. Today we would could do much better. Too bad we have not built any plants in more than 20 years.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
  19. Comment removed by account_deleted · · Score: 4, Insightful

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  20. Re:I, for one, welcome our new regulator overlords by maxume · · Score: 1

    What are you spouting about?

    The possibility of bad regulation doesn't really impugn the very concept of regulation.

    --
    Nerd rage is the funniest rage.
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  23. Molten sodium and water heat exchanger by j-stroy · · Score: 1

    Fast breeders have too many inherent risks. A primary one being: the corrosive molten sodium as a primary coolant must transfer the heat to water (the secondary coolant) via a heat exchanger. "Sodium reacts exothermically with water ... large pieces will explode." Sodium "As of 2006, all large-scale FBR power stations have been liquid metal fast reactors (LMFBR) cooled by liquid sodium." - Breeder reactors

    1. Re:Molten sodium and water heat exchanger by Cyberax · · Score: 1

      It's possible to build gas-cooled (helium) breeder reactors or molten salt reactors.

      It's an engineering problem and it can be solved.

    2. Re:Molten sodium and water heat exchanger by j-stroy · · Score: 1

      True that.. We can hope for good engineering decisions. I think the point of the article was that engineering problems (and their possible solutions) are not the penultimate decider of outcomes. Complex systems can't always be conquered by reductionism.

      There are multiple layers of "solutions" which can act in a counter-intuitive way. Examples: The stronger containment vessel overbuilt against external risks prevented a Chernobyl style internal blowout, the alarm and reporting system designed to inform operators immediately became completely confusing as designed, managers who help direct solutions became part of the problem by their presence, the valve indicator light was not a valve status light, the water quantity indicator wouldn't properly indicate a null amount.

      So no matter the engineering (or financial) possibilities, there are also many other layers both in execution and operation of a concept. It is demonstrably risky to mandate, and expect fulfillment of, regulatory and engineering (or financial) over-site due to the human factor and compounded, disconnected complexities which includes engineers (or financiers) themselves.

      We just gotta be more careful and a lot less trusting that "those in the know" are taking reasonable risks. Which is why arrogance from those with answers is a prime risk indicator.

    3. Re:Molten sodium and water heat exchanger by Whatanut · · Score: 1

      So your entire argument boils down to "OMG!!! Sodium and water in the same place!!!" The facts are that fast breeder reactors have been around for a good long time and they don't tend to go kaboom. I had one running in my backyard since 1978 http://en.wikipedia.org/wiki/Fast_Flux_Test_Facility. It's, sadly, been decommissioned for political reasons.

      --

      yvan eht nioj
    4. Re:Molten sodium and water heat exchanger by j-stroy · · Score: 1

      Nuclear waste is not a resolved issue. It is simply icing that explosive coolants is further double plus ungood.

      From your link about the fast breeder in your backyard: "The FFTF is not a breeder reactor itself, but rather a sodium-cooled Fast neutron reactor, as the name suggests."

      Believe me, I'm very much into good tech of any stripe. There just isn't a good end-to-end nuclear system up and running. The consequences are serious and longterm. Meanwhile we get ongoing design and operational compromises while the arm waving continues.

      Rhetorically: If the nuclear industry is so safe why is it un-insurable in the US, and instead government backed on top of an industry bond?

  24. Time for rehabilitation camp for you... by rts008 · · Score: 1

    Just step away from the facts and assume the position. You are going to be rehabilitated so you can increase your herd stampede skills, and improve your fear mongering tactics. We will make you into a more compliant citizen...just another brick in the wall.

    On a side note, when the plant was operating, the fishing near the cooling water outlet pipe in the river was great!

    --
    Down With Slashdot BETA!!! I've been around the corner and seen the oliphant; you can only abuse me from your perspecti
  25. Absolutely true by Kupfernigk · · Score: 1

    No mod points but your comment is insightful. I have worked with 3 ex nuclear sub people, one an engineer officer in the USN, one ditto in the RN, and one seaman officer. They were all trained to the Nth degree to do all the right things automatically, but had enough theory to be able to analyse and develop solutions to novel problems. Ships do not run, and wars are not won, by blind adherence to operating procedures.

    --
    From scarped cliff or quarried stone she cries "A thousand types are gone, I care for nothing, no not one."
  26. Tech is more than the machine by westlake · · Score: 1
    And because of this insignificant little incident that killed nobody...a safe, clean, mature power generation technology, was (and continues to be) drastically set back.

    Technology is more than the machine.

    If you don't know what is going on and you are clearly not in control your system has failed - catastrophically.

    The TMI cleanup started in August 1979 and officially ended in December 1993, having cost around US$975 million. From 1985 to 1990 almost 100 tons of radioactive fuel were removed from the site. However, the contaminated cooling water that leaked into the containment building had seeped into the building's concrete, leaving the radioactive residue impossible to remove. TMI-2 had been online only three months but now had a ruined reactor vessel and a containment building that was unsafe to walk in -- it has since been permanently closed. Three Mile Island Unit 2 was too badly damaged and contaminated to resume operations. The reactor was gradually deactivated and mothballed in a lengthy process completed in 1993. Three Mile Island accident

    A ten year - billion-dollar - clean-up can't be described as insignificant.

    Shippingport emphasized engineering, management, financial strength.

    Projects realistically scaled to the needs, experience and resources of their sponsors.

    Those lessons had been forgotten. "The Meltdown" was symptomatic of problems throughout the industry.

    1. Re:Tech is more than the machine by timeOday · · Score: 1

      A ten year - billion-dollar - clean-up can't be described as insignificant.

      Coincidentally, a billion dollars is almost exactly the value of the oil burned by the US every single day, at $50/barrel.

    2. Re:Tech is more than the machine by pipingguy · · Score: 1

      Can you extrapolate that to the new currency, Obamas?

    3. Re:Tech is more than the machine by westlake · · Score: 1
      Coincidentally, a billion dollars is almost exactly the value of the oil burned by the US every single day, at $50/barrel.

      the burden of which is shared by 50 states and 300 million people.

      in 1954 a rock slide destroyed the hydroelectric plant in Niagara Falls, NY, with a devastating impact on the local economy.

  27. Comment removed by account_deleted · · Score: 1

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  29. Untrue by Kupfernigk · · Score: 1
    I'm sorry, you have not the slightest idea what you are talking about. I can assure you that a first year student in engineering would not have the least idea where to start in monitoring temperatures - you need multiple locations - inside a reactor.

    You sir - how good are you on thermocouple alloys that don't mind neutrons and containments which can withstand not only neutrons but variable corrosive conditions at high temperatures? It's not just a matter of sticking a stainless steel jacketed thermocouple into an exhaust manifold.

    If I had a dollar for every poster on Slashdot who has thought some area of engineering was simple due to simple ignorance on -almost always a his - part, I'd have....quite a lot of dollars.

    --
    From scarped cliff or quarried stone she cries "A thousand types are gone, I care for nothing, no not one."
  30. I always viewed both as procedural failures by Suzuran · · Score: 1

    In both cases (Chernobyl and TMI) procedure was violated or nonexistent for what the operators were trying to do. In Chernobyl's case, operational procedure was violated in several instances to conduct a test for which no procedure existed. In TMIs case, procedure was violated in tagging out pumps leading to a problem in which there was no procedure for diagnosis.

    Neither plant would have been "inherently" unsafe or dangerous if operated within their design envelopes under established procedure. Once the humans violated procedure, their actions made their equipment unsafe.

    1. Re:I always viewed both as procedural failures by dunkelfalke · · Score: 1

      RBMK was inherently unsafe - a SCRAM operation may never ever produce a reactor explosion and this is what happened. also, the reactor was operated within the original design envelope (i read the original manual). after the explosion the manual was heavily rewritten.

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    2. Re:I always viewed both as procedural failures by calidoscope · · Score: 1

      A point about SCRAM on the RBMK - the initial insertion of the SCRAM caused an increase in reactivity - a very bad thing when the reactor had a positive void coefficient and a low delayed neutron fraction at the end of core life.

      --
      A Shadeless room is a brighter room.
    3. Re:I always viewed both as procedural failures by Suzuran · · Score: 1

      But Chernobyl DIDN'T scram.
      They pushed the button for it, but when they did, the reactor was too far gone. The rod channels had warped, and the rods didn't go all the way in - only their graphite tips.

      If they hadn't overheated it to the point of warping the rod channels, the rods would have gone all the way in and the reactor would have scrammed successfully.

      Otherwise, even with the heavy rewriting of the manual, the design would still be unsafe, and they wouldn't still be operating today.

    4. Re:I always viewed both as procedural failures by mpyne · · Score: 1

      Chernobyl never completed the scram process but the scram was initiated.

      The initial insertion of control rods had the effect of displacing water with control rod. The particular section that gets inserted first is actually made of a filler material that does not absorb neutrons. The water was actually better at absorbing neutrons than the filler, therefore the net effect is that the chain reaction was actually accelerated.

      There's no way to tell if this action alone caused the prompt criticality reaction that ended up destroying the core complex but there is absolutely no way it could have helped.

      In addition, the scram process relied on the control rods being held in the "scrammed" position, if the casualty would have caused heat damage to the metal holding the control rods they would have fallen right through the core, which is contrary to how control rods operate in every Western core I know about.

      You mentioned in a different post that RBMK reactors are still operated and are therefore not inherent unsafe. Although true, if you consult Wikipedia reference on RBMK reactors you'll see that post-Chernobyl several modifications were performed to attempt to increase the safety of the core.

      Although it is true that operator "assistance" was needed to create the Chernobyl event (i.e. it wasn't like the core "breached" spontaneously with no warning), the particular failure mode exhibited at Chernobyl is a mode that doesn't exist for most (if not all) other civilian power plant designs. All Western plants that I'm aware of for instance cannot fail in this fashion (which is what I think the ancestor posters had meant by "inherently unsafe").

    5. Re:I always viewed both as procedural failures by dunkelfalke · · Score: 1

      Uhm, wrong.
      At the SCRAM moment neither the reactor wasn't too far gone yet nor control rod channels were warped.
      The SCRAM operation has caused the runaway (the graphite rod tips displaced the water, a far better neutron absorber). Because of that the bottom part of the reactor (a RBMK is very large) went crazy (12 times thermal output of before), after two or three seconds already, and since the SCRAM operation of RBMK was very slow, the control rod channels were warped at exactly this point. Another three seconds later the thermal output was at 30 GW already and it went boom.

      The problem with reaction increase after a SCRAM was already known, the Leningrad nuclear power station nearly exploded and the technicians at the Ignalina nuclear power plant also have expirienced this problem a couple of years before the Chernobyl disaster and already proposed modifications of the control rods, but the designer - a well known and respected soviet scientist who worked at the design of nearly all soviet reactors - ignored the warnings.

      After the Chernobyl accident the manual was heavily rewritten so that the reactor may not be operated on low power and may not be operated without a number of control rods in it. Also the control rod design was modified, the operating power level was lowered somewhat and the reactor fuel must be more enriched now.

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    6. Re:I always viewed both as procedural failures by calidoscope · · Score: 1

      There's no way to tell if this action alone caused the prompt criticality reaction that ended up destroying the core complex

      Reports that I've read indicate that the scram rods were the most likely trigger of the accident. As you pointed out, the RBMK had a positive void coefficient, initial insertion of the scram rods caused the power to increase, which then caused more water to boil, which then led to even more voids and inceases in power. Now couple that with the event occurring at the end of core life, the reactor was primarily burning 239Pu with a much lower delayed neutron fraction than 235U, so it didn't take much to exceed the prompt critical threshold.

      --
      A Shadeless room is a brighter room.
    7. Re:I always viewed both as procedural failures by jabithew · · Score: 1

      Can I just interject for the non-nuclear crowd here:

      A positive void coefficient means that the reactor becomes more reactive (i.e. the number of nuclear reactions increases) as the coolant leaves/evaporates (i.e. forms voids).

      In contrast, Western reactors use water as the moderator, which enables nuclear reactions to take place. As voids form in the reactor, neutrons are no longer slowed and this reduces the reactivity, giving a negative void fraction.

      This is much safer as it means that less heat is formed when it is harder to carry heat away. The RBMK reactors, in contrast, form more heat as the heat transfer decreases.

      --
      All intents and purposes. Not intensive purposes.
    8. Re:I always viewed both as procedural failures by mpyne · · Score: 1

      Reports that I've read indicate that the scram rods were the most likely trigger of the accident. As you pointed out, the RBMK had a positive void coefficient, initial insertion of the scram rods caused the power to increase, which then caused more water to boil, which then led to even more voids and inceases in power. Now couple that with the event occurring at the end of core life, the reactor was primarily burning 239Pu with a much lower delayed neutron fraction than 235U, so it didn't take much to exceed the prompt critical threshold.

      Don't misunderstand me, the only part which is uncertain in my mind was whether the core was already prompt critical before they started the scram or not.

      Honestly given the insanely short generation period for a prompt critical core I think the most plausible explanation is that the scram tipped it over, as SL-1 seems to me to indicate that not a lot of time at all is needed to blow up a prompt critical core.

    9. Re:I always viewed both as procedural failures by Suzuran · · Score: 1

      That's what I meant. Every design has flaws, but Chernobyl wasn't so flawed that it would have spontaneously blown up with no provocation. If the operators had not initiated the incident, it would not have happened. The anti-nuclear lobby and their friends in the press would have you believe that all nuclear plants are an armed thermonuclear weapon simply waiting for the chance to explode and kill millions, and that is absolutely false. Even the demonized RBMK design would not have blown up without people doing what the designers told them not to do or not doing what the designers told them they had to do.

    10. Re:I always viewed both as procedural failures by calidoscope · · Score: 1
      My impression was that the core was not prompt critical before the scram rod insertion - though it is possible that the reactor was approaching that condition when the scram system was tripped.

      The graphite moderator does lengthen the generation time a bit - certainly much longer than the case for the most common prompt critical reactors AKA nuclear weapons.

      BTW, the TRIGA reactor was designed to operate prompt critical as much of the moderation took place in the fuel rods. I saw the TRIGA at Cal pulsed four times in one afternoon (as part of the NE-103 lab) - looked like a LARGE flashbulb going off in the reactor pool.

      --
      A Shadeless room is a brighter room.
  31. Home Sweet Home by ryanduff · · Score: 0

    I can look out my window and see the cooling towers. I'm about as close as you can get since I live on the river about 1.3 miles to the still active Reactor 1.

    I figure if something happens, I'd rather go instantly than be walking around with a third arm for the rest of my life!

  32. Re:I, for one, welcome our new regulator overlords by timeOday · · Score: 1

    So you are advocating unregulated, free-for-all nuclear power? Ha ha, great idea. No doubt the free market will find a nice cheap place to put the nuclear waste, too.

  33. Anyone remember Centralia?! by WidescreenFreak · · Score: 3, Insightful

    God, I wish I had mod points for you.

    I live about 15 miles away from TMI and I have for 20 years. I've never felt unsafe or felt like I was in danger. People seems to enjoy comparing TMI to being a potential Chernobyl, but there's simply no way that the two can even be compared.

    On the other hand, head up to Centralia, PA where the whole town has been demolished because of a fire that has been running through the ignition of a natural, coal vein. A fire ignited some coal, and now the whole town has been abandoned, homes have been razed, there are very few buildings to speak of, there are dangerous leaks of carbon monoxide and other lethal gases, the ground has swelled and cracked from the heat, and this fire is expected to last 250 years.

    Now ... how much nuclear power is involved with Centralia? Ummmm.... NONE! A natural resource (accidentally ignited by humans) has destroyed a town completely. Personally, I put Centralia on a higher level of "disaster" than I do TMI.

    --
    The Overrated mod is for reversing inappropriate, positive mods, not for voicing disagreement with a post.
    1. Re:Anyone remember Centralia?! by Insightfill · · Score: 1

      A natural resource (accidentally ignited by humans) has destroyed a town completely.

      Yes, Centralia is pretty bad, and the street and houses falling into the ground is pretty bad too, but trivial point; a LOT of the coal was surface air exposed. IIRC, if that much coal is exposed to air for long enough, it will gradually smolder.

      Worse: underground, a cavern of coal can generate TREMENDOUS heat. Early attempts at fighting coal mine fires of this size with water were abandoned - the heat was high enough that it would break the water into oxygen and hydrogen and further feed the fire.

      Smithsonian Magazine had a great story on this a couple of years ago.

    2. Re:Anyone remember Centralia?! by ukyoCE · · Score: 1

      That's the town that the game/movie Silent Hill is set in, isn't it?

  34. MOD PARENT UP!! by Brett+Buck · · Score: 1

    Exactly right, this reactor type is inherently dangerous, and moreover, you can't overcome something inherently dangerous with procedure.

    1. Re:MOD PARENT UP!! by Suzuran · · Score: 1

      Then why are there RBMK reactors identical to Chernobyl which still operate even today? If they were as inherently dangerous as everyone is told to believe, they would have all blown up by now. Yet Chernobyl remains the only incident.

    2. Re:MOD PARENT UP!! by dunkelfalke · · Score: 1

      There are no RBMK reactors identical to Chernobyl in current operation. Part of them was shut down, others were modified (redesigned control rods, a faster SCRAM system and a number of other upgrades).

      There were also some RBMK accidents before the Chernobyl disaster:

      - the partial core meltdown at the Leningrad nuclear power plant in 1975
      - the problems with the Ignalina nuclear power plant in 1984, nearly right after the start

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    3. Re:MOD PARENT UP!! by Suzuran · · Score: 1

      OK, so only minor modification was needed to make them safe then? That still doesn't mean the design is a ticking time bomb that will kill us all like the media wants us to believe.

    4. Re:MOD PARENT UP!! by dunkelfalke · · Score: 1

      I wouldn't call a complete control rod redesign a "minor modification". There were quite major modifications at all existing RBMK power plants. Also, while the upgraded RBMK continue to operate now (except the Ignalina power plant which partially shut down in 2004 and will shut down completely this year) and while they are considered safer than before, they are still lacking a containment and so are unsafe. No new RBMK type reactors will be built.

      Even at the Kursk nuclear power plant site, where there are already 5 RBMK reactors (the fifth is still under construction since 1986 and will be the a completely redesigned RBMK version with a containment building), no new RBMK type reactors would be added. Russia has decided to build a second power plant in Kursk with much safer VVER type reactors. The oldest RBMK reactors at this site would be shut down then.

      The only reason why RBMK reactors are still in operation is that they provide about 50% of the whole russian nuclear power. RBMK type reactors are huge and have very high output (for example, the Ignalina reactors were the world most powerful nuclear reactors at the time they were built) together with relative cheap operation. Still they will be phased out for safer designs.

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    5. Re:MOD PARENT UP!! by jjohnson · · Score: 1

      If they were as inherently dangerous as everyone is told to believe, they would have all blown up by now.

      No they wouldn't. Inherently unsafe" doesn't mean they will necessarily blow up within a certain timeframe. It means that, by design, it is possible for it to blow up under the right circumstances, as the Chernobyl technicians found out. As a result of Chernobyl, many design and procedural changes have resulted to avoid those circumstances. Would you feel alright flying in a plane if the wings could fall off during a right turn, so the pilot only makes left turns?

      Compare it with a pebble bed reactor, which by design can never go critical.

      --
      Anyone who loves or hates any language, platform, or manufacturer, doesn't know what they're talking about.
  35. Government, what a shock by Anenome · · Score: 1

    I'm not surprised at all that the Three Mile Island breakdown was ultimately caused by government. Legislation tends to have unforeseen effects like this. I'm sure the builders would've loved to put in computer control and this tragedy would've never happened. When, when will we learn, when?

    Government, get out of the way.

    --
    "I Don't Have Enough Faith to be an Atheist"
    1. Re:Government, what a shock by mkcmkc · · Score: 1

      Government, get out of the way.

      Yeah, let AIG run it! ;-)

      --
      "Not an actor, but he plays one on TV."
    2. Re:Government, what a shock by im_thatoneguy · · Score: 1

      Yes. An accident which resulted in no deaths is clearly to be blamed by safety regulations.

      Now if only we had the lax regulatory oversight of Chernobyl we would never have had such a diasterous failure.

    3. Re:Government, what a shock by Anonymous Coward · · Score: 0

      If you read congressional transcripts from the legislative sessions where the "no computer control" laws were passed, they talked about safety, but the real driver (that was mentioned on the floor) was protection of union operator jobs. The Operating Engineers union lobbied aggressively against not having any computer control of anything in any industrial complex anywhere, ever. They claimed that computers were inherently unsafe, inefficient, and completely incapable of control (an assertion rendered completely false with the invention of the DCS years prior).

      Whenever the government meddles in anything, you can always trace it back to the special interests that put those particular politicians into power - and the big ones of that time were the labor unions.

  36. Re:I, for one, welcome our new regulator overlords by marco.antonio.costa · · Score: 2, Interesting

    As I tire of pointing out and people never tire of not understanding, lack of regulation does not mean free-for-all, might is right or whatever.

    An unregulated nuclear industry does not mean plants can pour waste in other people's property. Since governments regulate commons they must either take responsibility to ensure they are not destroyed or privatize them to internalize the externalities.

    --
    Send your spendthrift head of state this
  37. Re:I, for one, welcome our new regulator overlords by marco.antonio.costa · · Score: 1

    As Einstein said, the very definition of insanity is to repeat the same action and expect a different outcome.

    --
    Send your spendthrift head of state this
  38. Re:Insignificant? by symbolic · · Score: 1

    There was a partial core meltdown. That, no matter how you choose to define it, it NOT insignificant.

  39. "had little to no effect on the health of people" by Crackez · · Score: 2, Informative

    Elizabethtown College - about 7 miles from TMI as the crow flies (or the wind blows).

    My sister went to school there, and after two and a half semesters there she was diagnosed with thyroid cancer.

    Lets rewind... The morning of the accident people reported a metallic taste in the air. Turns out that of the gas released, radioactive iodine accounted for an estimated "8 - 12% of the total gases released, implying a minimum of 1 million iodine curies". See: TMI Accident.

    I don't believe that people were not harmed by the radioactive release. In fact, stating that it "had little to no effect on the health of people" is a lie. Any arguments based on that lie are faulty.


    I am for nuclear power, and I agree that letting bean counters manage a project like that is the wrong way. I'm in agreement with all of the other people here who think that engineers should be listened to. They are the ones with the knowledge after all...

  40. huh? by mkcmkc · · Score: 1

    As I tire of pointing out and people never tire of not understanding, lack of regulation does not mean free-for-all, might is right or whatever.

    An unregulated nuclear industry does not mean plants can pour waste in other people's property. Since governments regulate commons they must either [A] take responsibility to ensure they are not destroyed or [B] privatize them to internalize the externalities.

    Umm, actually A does mean regulation, contradicting your assumption, and B without regulation does mean a "might is right" free-for-all.

    Are you sure you don't think the nuclear industry should have government oversight? Would you be willing to send your kids to a school next to a nuke plant owned by AIG and run by Enron?

    --
    "Not an actor, but he plays one on TV."
  41. Re:I, for one, welcome our new regulator overlords by timeOday · · Score: 2, Insightful

    Maybe they do understand but don't agree. Privatizing land is no way to protect it from toxic or nuclear waste. Ownership of land is a handy legal contrivance, but let's not take it too far. There is a finite amount of Earth for all the people that have lived, live now, and will ever live. Individuals live relatively briefly and have no right to carelessly dump nuclear waste that will far outlive them, regardless of some piece of paper. Ultimately our right to bury nuclear waste comes from exercising diligence and doing it in a way that won't cause any accidents for a very long time.

  42. Re:I, for one, welcome our new regulator overlords by something_wicked_thi · · Score: 1

    Very few people seem to realize Einstein was proved wrong there. Quantum mechanics does produce different results for the same action.

    But it's amusing to watch stupid people quote Einstein for their own idiotic purposes, nonetheless.

  43. Re:I, for one, welcome our new regulator overlords by jabithew · · Score: 1

    All very well and good, but how are you going to tie quantum theory back into the financial sector's desperately bad regulation, smart boy?

    --
    All intents and purposes. Not intensive purposes.
  44. Re:"had little to no effect on the health of peopl by Anonymous Coward · · Score: 2, Interesting

    My sister went to school there, and after two and a half semesters there she was diagnosed with thyroid cancer.

    That's nothing. My grandad went to Lourdes and only six months later he got leukemia. I want to know when people are going to take a stand against the unshielded holy radiation that causes such damage to humans.

    I'm posting this AC because I just know it's going to be marked troll, and you're going to post something like "she's dead now, you jackass" as though that's relevant to the debate. But if you read the Wikipedia article you linked to, several studies have found no evidence of any increase in death due to TMI, especially compelling with the observations that cancer deaths were highest in the area with lowest fallout, and that the area around TMI has high levels of radon and so high background radiation anyway.

    Your sister may have died from cancer (I don't know) and that's certainly a tragedy. Nevertheless, this is not the fault of the nuclear industry, but one of those pieces of shit that happen depressingly regularly in this amoral, godless universe. As a someone who is an engineer or an allied trade (you respect engineers after all, so you must be one) you should know statistics well enough to accept that.

  45. Good or bad UI, it better present the information by Beryllium+Sphere(tm) · · Score: 2, Insightful

    >Operators who understood what they were doing would have checked what needed to be checked

    What needed to be checked was the level of water in the core.

    There was no instrument for that. I'm not kidding. See _Safeware_, by Nancy Leveson.

    (It's a harder problem than it sounds like, if you think about the conditions in the core, but still ...)

    The operators, deprived of an accurate picture of what was happening, followed their training, which was to prevent overfilling the cooling system.

    The UI failed on functionality, and even if it had succeeded there, ease of use saves time and bandwidth in a crisis.

  46. Re:"Worst Nuclear Accident in US History" by Paul+Fernhout · · Score: 1

    Almost all big industrial processes are dangerous, it's true. Even with solar panels, people will fall off roofs when they install them. It's sometimes hard to assess benefits to whom versus risks to who else?

    Still, was the TMI release safe just like the air was declared safe by the EPA in NYC after 9/11?
    "EPA Misled Public on 9/11 Pollution: White House ordered false assurances on air quality, report says "
    http://www.commondreams.org/headlines03/0823-03.htm
    """
    Rep. Jerry Nadler, a Manhattan Democrat, called for a Justice Department investigation. "That the White House instructed EPA officials to downplay the health impact of the World Trade Center contaminants due to 'competing considerations' at the expense of the health and lives of New York City residents is an abomination," he said in a news release. Sen. Charles Schumer, D-N.Y., said in an interview it was "understandable that in the midst of a crisis the White House did not want the EPA to sound alarmist." But, he warned, "If the public loses faith that things are safe when the government says so, we'll have done more damage than a pointed statement the week after 9/11 would have."
    """

    As to there being no deaths related to TMI, that's not what these people say:
    "30 Years and Counting: People Died at Three Mile Island "
    http://www.counterpunch.org/wasserman03242009.html
    """
    Using unsubstantiated estimates of how much radiation was released, the government issued average doses allegedly received by people in the region, which it assured the public were safe. But the estimates were utterly meaningless, among other things ignoring the likelihood that high doses of concentrated fallout could come down heavily on specific areas. ... In fact, the most reliable studies were conducted by local residents like Jane Lee and Mary Osborne, who went door-to-door in neighborhoods where the fallout was thought to be worst. Their surveys showed very substantial plagues of cancer, leukemia, birth defects, respiratory problems, hair loss, rashes, lesions and much more. ... Gundersen, a leading technical expert on nuclear engineering, says:
    "When I correctly interpreted the containment pressure spike and the doses measured in the environment after the TMI accident, I proved that TMI's releases were about one hundred times higher than the industry and the NRC claim, in part because the containment leaked. This new data supports the epidemiology of Dr. Steve Wing and proves that there really were injuries from the accident. New reactor designs are also effected, as the NRC is using its low assumed release rates to justify decreases in emergency planning and containment design." ... But the Big Lie remains officially in tact. Expect to hear all week that TMI was "a success story" because "no one was killed." But in mere moments that brand new reactor morphed from a $900 million asset to a multi-billion-dollar liability. It could happen to any atomic power plant, now, tomorrow and into the future. Meanwhile, the death toll from America's worst industrial catastrophe continues to rise. More than ever, it is shrouded in official lies and desecrated by a reactor-pushing "renaissance" hell-bent on repeating the nightmare on an even larger scale.
    """

    Or here:
    "Startling Revelations About Three Mile Island Raise New Doubts Over Nuclear Plant Safety "
    http://www.counterpunch.org/sturgis04032009.html
    """
    The evidence that people, animals and plants near TMI were exposed to high levels of radiation in the 1979 disaster is not merely anecdotal. While government studies of the disaster as well as a number of independent researchers assert the incident caused no harm, other surveys and studie

    --
    A 21st century issue: the irony of technologies of abundance in the hands of those still thinking in terms of scarcity.
  47. Re:"Worst Nuclear Accident in US History" by Beryllium+Sphere(tm) · · Score: 1

    Indirectly, it caused hundreds of deaths.

    By displacing coal-fired power, the two reactors on site were saving 100 lives per year, based on the Office of Technology Assessment figures for premature deaths from coal burning. Those people, who would have lived if the reactors had stayed in operation, are dead now.

  48. Re:I, for one, welcome our new regulator overlords by maxume · · Score: 1

    So you don't think anybody would try to rush things along and end up with their own little Chernobyl?

    Sort of hard to internalize that or clean it up after the fact.

    --
    Nerd rage is the funniest rage.
  49. Re:Good or bad UI, it better present the informati by Schmodus · · Score: 1

    Sounds like QA dropped the ball on testing the system before deployment.

  50. Containment by Beryllium+Sphere(tm) · · Score: 1

    >the average containment vessel would have failed

    Citation needed?

    There were overpressure spikes, but I don't remember them being remotely large enough to bust open a foot of reinforced concrete.

  51. Re:I, for one, welcome our new regulator overlords by History's+Coming+To · · Score: 1

    Simple, I've developed a Theory of General Financial Relativity that ties it all together perfectly.


    .......oh.......hang on a minute.....

    --
    Please consider this account deleted, I just can't be bothered with the spam anymore.
  52. Re:"Worst Nuclear Accident in US History" by ion.simon.c · · Score: 1

    You should take the spirit behind your Grammar Nazi .sig and apply it to the post directly above yours. Good luck!

  53. Re:"Worst Nuclear Accident in US History" by korbin_dallas · · Score: 1

    "3 January 1961
    The world's first nuclear-related fatalities occurred following a reactor explosion at the National Reactor Testing Station in Idaho Falls, Idaho. One navy technician and two army technicians, were killed, with radioactivity "largely confined" (words of John A. McCone, Director of the Atomic Energy Commission) to the reactor building. The three men were killed as they moved fuel rods in a "routine" preparation for the reactor start-up. One technician was blown to the ceiling of the containment dome and impaled on a control rod. His body remained there until it was taken down six days later. The men were so heavily exposed to radiation that their hands had to be buried separately with other radioactive waste, and their bodies were interred in lead coffins. Another incident three weeks later (on 25 January) resulted in a release of radiation into the atmosphere."

    http://www.lutins.org/nukes.html

    Isn't it funny what people choose to remember...

    --
    They Live, We Sleep
  54. Re:I, for one, welcome our new regulator overlords by DeadChobi · · Score: 1

    Why don't we just fill a bunch of concrete containers with the stuff and drop them into a subduction zone? That way the waste will just get eaten by the earth. The bonus is that it will be below the water table out of which we drink.

    --
    SRSLY.
  55. Re:"Worst Nuclear Accident in US History" by DaveGod · · Score: 1

    But the result is a fluke, according to TFA:

    TMI-2 was built on the final approach path to Harrisburg International Airport, a former U.S. Air Force base, and was therefore beefed-up specifically to withstand the impact of a B-52 hitting the structure at 200 knots. A normal containment would have been breached.

    What it does is demonstrate exactly why the public does not trust nuclear energy. Sure, they say the technology is so strong now that we are capable of building an incredibly safe nuclear plant. But people are always being told how safe it is before pretty much any man-made disaster. Here on /. we spend a lot of time talking about how we cannot trust the government nor big companies, and now complaining when they don't?

    Whether the technology is all that safe is perhaps something of a moot point. Wherever there are humans involved, there is scope for human error. Again TFA makes this clear. There was nothing wrong with the available technology, the failures were all human.

  56. The Operators Were Not Cheap by anorlunda · · Score: 5, Interesting

    I used to work in the nuclear power plant operator training industry. Believe me, whatever else those operators were, they were not cheap. The CEO could not skimp on salaries and hire idiots. In fact, in a time when $40K was an excellent salary, the training costs per operator was more than $1 million.

    On the other hand, there were cultural obstacles. In Europe (Sweden), they hired engineers with masters degrees to become nuclear plant operators. In the USA, they were mostly high school grads who were union members and promoted from running older coal plants. Union politics, not merit decided who got promoted. They were not the best and brightest. Of course in Sweden they also attract the best and brightest to be civil servants. Can you imagine that happening here?

    There are always plenty of suggestions as to where society should apply its best and brightest. It is much harder to place the worst and dumbest. Consider the bottom 25%. They have to have jobs. No matter where you assign them, the public will in some way be depending on those jobs being done well. So filling jobs becomes less of a question of rational allocation of resources, but more a matter of attractiveness and recruiting.

    A plant operator must stand there and do nothing but monitor year after year, yet react swiftly and accurately in those rare seconds of pure terror, and then have the whole world second guess how well they did it. In addition, they have to do shift work for 24x7 operation. Most people think that it is a hell of an unattractive job. I think that the plant owners do a hell of a job trying to find and retain the best people they can get, and to enrich the jobs to make them less boring. It takes much more than deep pockets to succeed.

    So you tell me. You play CEO and tell me how would you convince Google engineers to quit Google and become operators, and how many of the lower quartiles you would assign to invent Google. Convince those bright college students that they don't want to be environmental scientists, but nuclear power plant operators instead.

    1. Re:The Operators Were Not Cheap by khallow · · Score: 1

      It's not that difficult. One can't reasonably sort humanity in groups by some generic measure of competence or intelligence. An intelligent person isn't automatically a good choice for nuclear plant operator. In particular, it makes no sense to raid Google's employees just to staff a nuclear plant. Among other things, there's a very good chance that a Google employee doesn't have the temperament for the far more structured environment of a nuclear power plant.

      As for placing the "dumbest" 25%. It's not at all hard. There's plenty of jobs that don't require significant mental prowess and are well suited to this group. They can excel at their job just like anyone else.

    2. Re:The Operators Were Not Cheap by dfenstrate · · Score: 1

      Well said.

      They're almost done spending their million dollars on me.
      3 Years as an Nuclear System Operator (aka Auxiliary Operator)
      My NRC license exam is in June.

      (BS in Mechanical Engineering.)

      --
      Alcohol, Tobacco and Firearms should be the name of a store, not a government agency.
    3. Re:The Operators Were Not Cheap by cyn1c77 · · Score: 2, Funny

      There are always plenty of suggestions as to where society should apply its best and brightest. It is much harder to place the worst and dumbest. Consider the bottom 25%. They have to have jobs.

      I don't really think that it would be that hard to find jobs for the under-achievers:

      1. President

      2. Presidential advisers

      3. Congress

      4. Investment bankers

      5. Actors and actresses

      6. CEOs

      7. Lawyers

      I'm sure that I have missed a few key positions, feel free to help me out.

    4. Re:The Operators Were Not Cheap by Duhavid · · Score: 1

      "So you tell me. You play CEO and tell me how would you convince Google engineers to quit Google and become operators"

      I dunno, pay them a lot?

      --
      emt 377 emt 4
    5. Re:The Operators Were Not Cheap by iiiears · · Score: 1

      My communitty is at least in part powered by nuclear energy and i am grateful for it. I am also admiring of the clever people that designed and built it. I am also reasonably certain never to see an accident there in my lifetime. But the risk is not zero. Do you understand has failed in a technology as complex as this? When there is any competititive force to lower costs and safeguards will be reduced. It is human nature to reduce effort to maximise gain. Given enough time without an accident human nature will conspire to cause an accident. If a single powerstion had a mean time to failure of 1,000 years how many stations would be built? A hundred? A thousand? What looked initially like a source of power too cheap to meter isn't. Politics and human nature are the real risks of nuclear power nowhere is that clearer than the unsolved question of what to do with spent nuclear fuel.

      --
      15TW = 15,000 Nuclear Reactors. (Approx. one accident a month.)
    6. Re:The Operators Were Not Cheap by NotOverHere · · Score: 1

      TMI-2 was the quintessential example of lessons to learn. If you walk away from the process, you've learned nothing from it.

      There are so many oil spills at sea on an annual basis, but even after Exxon-Valdez, most people are still driving with gas shipped by tanker. Almost five months after the TVA coal ash spill, nearby coal plants are still burning. A couple of years after TMI, WR Grace was sued for trichloroethylene found in the drinking water; TCE is still used as an industrial solvent.

      If you make the laws such that it is prohibitive to F-it up, even the bean counters will find it cheaper to do it right.

      Lessons learned from TMI-2: make the UI easy to get the useful information; Procedural compliance-- shutting off feedwater valves broke rules that were there for a reason (Chernobyl popped it's lid like tupperware in the microwave because they were breaking Ohhhhh so many proceedures.); Train your operators - cross check readings that don't make sense; Design the plant such that it is passively safe; Last of all, put a single person on the hook if anything goes wrong--the persistent threat of jail time spelled out ahead of time to a CEO will get their attention.

      The Navy took these lessons to heart and incorporated it into their Propulsion Program. Late hours as RO and SRO theorizing "what would happen if" for all possible scenarios (you think of some interesting ones at 2 AM), made me confident that I would wake up safe every time I hit the rack.

  57. Re:I, for one, welcome our new regulator overlords by petermgreen · · Score: 1

    An unregulated nuclear industry does not mean plants can pour waste in other people's property.
    And what happens if due to some accident they do spread a load of waste over other peoples property? Sure you can send them to PMITA prison but that doesn't fix anything. Sure you can sue them into bankrupcy but they are unlikely to have anything like the money to pay for the damage they caused.

    Since governments regulate commons they must either take responsibility to ensure they are not destroyed
    Which requires them to 1: punish those who deliberately act to destroy them and 2: REGULATE actions that have an unacceptable chance of accidently destroying them.

    or privatize them to internalize the externalities.
    Which is kinda impractical when the commons in question is the air we all have to live in and breathe.

    --
    note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
  58. Re:"Worst Nuclear Accident in US History" by The_mad_linguist · · Score: 2, Interesting

    Fun fact: cows in a field two miles away from Three Mile Island got more radiation from Chernobyl.

  59. Re:I, for one, welcome our new regulator overlords by gumbi+west · · Score: 1
    In a completely unregulated framework one could just start a C corp. with nothing in it, give it the reactor, and then mess up everything indiscriminately.

    I have read superfund documents where a single person probably earning a typical salary caused far, far more damage than their lifetime salary (like tens of millions). You also have to realize, the legal system is extremely costly, we are better off just keeping things out of it except when they are very important.

  60. Re:"Worst Nuclear Accident in US History" by Anonymous Coward · · Score: 0

    Ummm...yeah, really safe...ummmm...yeah...so, how do you account for this?
    http://en.wikipedia.org/wiki/Nuclear_and_radiation_accidents

    Or, perhaps, this?
    http://en.wikipedia.org/wiki/Chernobyl_disaster

    Rather selective, aren't we? Nuclear power...yeah, real safe, so they say...
    And let's not even get started on waste problems, etc.

    With luck, several fusion reactors will hopefully alleviate some of these problems...

  61. Re:I, for one, welcome our new regulator overlords by michaelmuffin · · Score: 1

    subducting plates build mountains, i think they can break open a concrete container. even if the waste were to subduct, what's to stop it from floating up into a pluton and shooting out a volcano?

    http://upload.wikimedia.org/wikipedia/en/0/02/Subduction01.jpg

  62. Re:I, for one, welcome our new regulator overlords by Man+On+Pink+Corner · · Score: 1

    Why don't we just fill a bunch of concrete containers with the stuff and drop them into a subduction zone?

    Because we're going to want it back later.

    As usual, as soon as the term "nuclear waste" comes up, people lose all rational foresight. The stuff comes out of the reactor with a great deal of residual energy (hence its continuing danger). We just can't/don't currently take advantage of it.

    If someone were to come up with a safe way to permanently dispose of nuclear waste, he wouldn't be doing the future any favors.

  63. Re:Good or bad UI, it better present the informati by budgenator · · Score: 1

    The operators, deprived of an accurate picture of what was happening, followed their training, which was to prevent overfilling the cooling system.

    They were not deprived of an accurate picture, their instruments were actually lying to them

    A lamp in the control room, designed to light up when electric power was applied to the solenoid that operated the pilot valve of the PORV, went out, as intended, when the power was removed. This was incorrectly interpreted by the operators as meaning that the main relief valve was closed, when in reality it only indicated that power had been removed from the solenoid, not the actual position of the pilot valve or the main relief valve. Because this indicator was not designed to unambiguously indicate the actual position of the main relief valve, the operators did not correctly diagnose the problem for several hours.[10]

    The design of the PORV indicator light was fundamentally flawed, because it implied that the PORV was shut when it went dark. When everything was operating correctly this was true, and the operators became habituated to rely on it. However, when things went wrong and the main relief valve stuck open, the dark lamp was actually misleading the operators by implying that the valve was shut. This caused the operators considerable confusion, because the pressure, temperature and levels in the primary circuit, so far as they could observe them via their instruments, were not behaving as they would have done if the PORV was shut â" which they were convinced it was. This mental confusion contributed to the severity of the accident: because the operators were unable to break out a cycle of assumptions which conflicted with what their instruments were telling them, it was not until a fresh shift came in who did not have the mind-set of the first set of operators that the problem was correctly diagnosed. But by then, major damage had been done. Three Mile Island accident

    --
    Apocalypse Cancelled, Sorry, No Ticket Refunds
  64. Re:"Worst Nuclear Accident in US History" by hawk · · Score: 1

    It was a *far* worse accident than Chernobyl. Unlike Chernobyl, US reactor design contained the accident.

    For extra credit, compare the total release at TMI to to what a coal plant releases in a regular day of operation.

    hawk

  65. Re:I, for one, welcome our new regulator overlords by camperdave · · Score: 1

    Yes, and trying to understand quantum mechanics drives me insane.

    --
    When our name is on the back of your car, we're behind you all the way!
  66. Re:I, for one, welcome our new regulator overlords by hawk · · Score: 2, Interesting

    to adapt a suggestion given by a libertarian acquaintance years ago . . .

    Never mind government regulation. Require a half-trillion dollar liability policy. The insurance company will regulate far tighter and more effectively than the government.

    hawk, who isn't advocating this, but finds it an interesting proposal

  67. Re:I, for one, welcome our new regulator overlords by hawk · · Score: 2, Informative

    You are aware, of course, that under american and british law, this results in unlimited shareholder liability, aren't you?

    Or are you just parroting ignorant claims about how corporate law and liability works.

    AFAIK, there has *never* been a time or an anglo-american jurisdiction in which a corporation inadequately capitalized for the business which is entering does not leave its shareholders liable.

    But then, I'm just an attorney.

    hawk, esq., not offering this as legal advice. If you need that, pay for it, rather than relying on the ignorance posted on slashdot

  68. Re:"Worst Nuclear Accident in US History" by khallow · · Score: 1

    Where's the smoking gun? Where's the radiation? Cancer clusters and the other observations have no relevance, if Three Mile Island didn't leak significant radiation. I notice several of your cited authors make claims about high levels of radiation near the plant, but I don't see any measurements of that supposed radiation.

  69. Re:I, for one, welcome our new regulator overlords by DAldredge · · Score: 2, Insightful

    AIG was an insurance company.

  70. Criticality by MrKaos · · Score: 1
    Dr. Michio Kaku, professor of Nuclear Physics at the City University of New York, was quoted to say of TMI

    "It appears that every few months, since 1990, a new estimate is made of core debris, often with little relationship to the previous estimate. Estimates range form 608.8 kg to 1,322 kg... This is rather unsettling....," he concluded. "The still unanswered questions are therefore: precisely how much uranium is left in the core, and how much uranium can collect in the bottom of the reactor to initiate re-criticality."

    It would seem that the effort to bring the reactor core to a benign state remains an ongoing process.

    --
    My ism, it's full of beliefs.
  71. Degrade Weapon Grade Material? by carlzum · · Score: 1
    This was an interesting point in the article

    The end of the Cold War has left us with a legacy of weapons grade nuclear materials that must be dealt with. Thanks to the 1950s weâ(TM)re stuck with all the issues of storing this stuff no matter what Obama or any other U.S. President does. It just makes sense to me to take this stuff that used to be bombs and degrade it into something that can no longer make bombs

    That's certainly a compelling argument, I'm surprised I've never heard it made by nuclear power supporters. If there really is a surplus of military-grade materials that need to be disposed of, I'm all for safely converting it for civilian use first. I know nothing about nuclear science or politics, so I have no idea if it's realistic or not. If I ever find out for sure, it would dramatically change my support of nuclear power.

  72. Simi Valley Nuclear Disaster [video] by Anonymous Coward · · Score: 0

    According to this video's blurb:

    Simi Valley California was the site of the worst nuclear disaster in U.S. history in 1959, and the amounts of radiation leaked to the environment and atomosphere were more than 240 times that of the accident at 3-Mile Island.

  73. Re:I, for one, welcome our new regulator overlords by bitrex · · Score: 1

    It has often been argued that the reason for the decline of nuclear power in the United States was because of the environmental movement in the late 1970s. It has also been argued, however, that 3 Mile Island was a wake up call to the private investors in the US who noticed that a 2 billion dollar nuclear plant asset could be turned into a 1 billion dollar cleanup legal liability in the space of 30 minutes. Of the dozens of new nuclear plants slated for construction in the 1970s, only a few were stopped because of environmentalist action. The others quietly folded up because investors said "Wow, no thanks" after seeking what kind of risk might be involved.

  74. Simple, except the computer noticed 700 things wrong in the first few minutes of the TMI accident, causing the one audible alarm to ring continuously until it was shut off as useless. The one visual alarm blinked for days, indicating nothing useful. And the print queue was quickly flooded with 700 error reports followed by thousands of updates and corrections, making it almost instantly hours behind. The operators had to guess at what the problem was.

    Sounds like Nagios at my work :-)

  75. Re:"Worst Nuclear Accident in US History" by Paul+Fernhout · · Score: 1

    That is a false dilemma. We don't have to use either coal or nuclear power. Both have been heavily subsidized by government in various ways for various special interest reasons:
        http://en.wikipedia.org/wiki/Brittle_Power
    "Brittle Power: Energy Strategy for National Security is a 1982 book by Amory B. Lovins and L. Hunter Lovins, prepared originally as a Pentagon study, and re-released in 2001 following the September 11 attacks. The book argues that domestic energy infrastructure is very vulnerable to disruption, by accident or malice, often even more so than imported oil. According to the authors, a resilient energy system is feasible, costs less, works better, is favoured in the market, but is rejected by U.S. policy. In the preface to the 2001 edition, Lovins explains that these themes are still very current."

    There are lots of alternatives. Nothing is perfect, of course.

    --
    A 21st century issue: the irony of technologies of abundance in the hands of those still thinking in terms of scarcity.
  76. Re:"Worst Nuclear Accident in US History" by Paul+Fernhout · · Score: 1

    That's a very interesting question. I don't know the answer. But is it perhaps because some people don't want to know?
        http://www.tmi-cmn.org/tmiphf.htm
    "A common thread that ran through all concerns about the accident was the lack of adequate and accessible data about radiation levels during and after the accident. Trust was another significant issue. Misinformation supplied by the plant operator, GPU, damaged community relations. The NRC and other agencies did not handle the situation in ways that allayed public concerns."

    It looks like a modern geiger counter costs about $500. Maybe *every* person around a nuclear plant should be given one?

    --
    A 21st century issue: the irony of technologies of abundance in the hands of those still thinking in terms of scarcity.
  77. Re:I, for one, welcome our new regulator overlords by eam · · Score: 1

    So? How was Einstein proven wrong? As I read it that just means that quantum mechanics is insane.

  78. Re:I, for one, welcome our new regulator overlords by jsoderba · · Score: 1

    Then no one would do it at all, which is, in my view, not a desirable outcome.

  79. root cause of the accident by viralMeme · · Score: 1

    According to reports the accident was caused because; while the PORV was still open the signal light available to the operator showed it to be closed, as it only showed the presence or absence of current, not that the valve was actually closed. Therefore it was a non-computer display failure, the 'SEVEN HUNDRED things wrong' occurred as a consequences of operator action not the cause of it.

    "The operators might have determined that the valve was open by looking at a pressure indicator for the reactor-coolant drain tank .. But that signal was situated behind the seven-foot-high instrument panels .. and did not do so as they attempted to cope with the flurry of confusing signals they were already"

  80. Re:"Worst Nuclear Accident in US History" by khallow · · Score: 1
    Government and the plant operators aren't the only parties who could take samples. The people claimed to be affected could have done so as well. I gather there is public access to most of the alleged affected areas. You don't need anyone's permission even to go in and conduct certain sorts of sampling. It strains credulity to claim that none of this was done by anyone.

    It looks like a modern geiger counter costs about $500. Maybe *every* person around a nuclear plant should be given one?

    Geiger counters only work when a person uses them properly. For legal purposes, you may need more (a standard procedure, witnesses, hard to counterfeit paper record of observations, etc). Automated sampling is better.

  81. 100 years from now.... by pottymouth · · Score: 1

    ...TMI will be remembered as the rallying call for media disinformation about nuclear power and possibly the turning point in US history where we gave up being leaders and began the long descent into being idiotic sheep. If there was one incident in history where the media should be blamed for causing irreparable harm to the people of the United States this was it.

    The TMI systems worked so well that even in the face of a core meltdown (however small) no one was harmed and virtually no radiation released. Yet, despite this, the media used lies and myths about TMI to prevent nuclear based power from ever growing to be the dominate form of power generation in the US.

    Truly a true crime against humanity (and the climate, Mr Green).

  82. Three Mile Island caused by government .. by viralMeme · · Score: 1

    "I'm not surprised at all that the Three Mile Island breakdown was ultimately caused by government"

    Not at all, it would have been prevented by designing a signal light that showed the actual state of the PORV instead of the presence or absence of current, and not hiding the pressure indicator behind the seven-foot-high instrument panels. And given what I know about how software is designed, a nuclear power plant is the last place you would want one it. From warships going dead-in-the-water, 'Internet' viruses causing blackouts and patients being fried in radiation therapy machines, I rest my case. Small embedded systems with multiple backups and known failure modes is the safest.

  83. nuclear draft detection device .. by viralMeme · · Score: 1

    'Just below the plant's control room, two electricians were trying to seal air leaks .. They were using strips of spongy foam rubber to seal the leaks. They were also using candles .. by observing how the flame was affected by escaping air'

  84. reliable temperature monitor by viralMeme · · Score: 1

    "A first year undergraduate engineering student would be able to build a reliable temperature monitor"

    I recall seeing an ICI documentary where the operator used a telescope to observe a mercury thermometer on top of a pressure vessel, which was producing ammonia iirc .. :)

  85. Re:I, for one, welcome our new regulator overlords by Hognoxious · · Score: 1

    AFAIK, there has *never* been a time or an anglo-american jurisdiction in which a corporation inadequately capitalized for the business which is entering does not leave its shareholders liable.

    If it was adequately capitalised then the company wouldn't have gone under. Ergo, any company that goes under was inadequately capitalised.

    And yet they certainly don't "lift the veil" in most, let alone all, cases of corporate insolvency.

    --
    Confucius say, "Find worm in apple - bad. Find half a worm - worse."
  86. Re:"Worst Nuclear Accident in US History" by sjames · · Score: 1

    Agreed! Especially considering that coal plants have required the permanent relocation of people due to pollution even when they are operating normally.

  87. Re:I, for one, welcome our new regulator overlords by Anonymous Coward · · Score: 0

    Non-sequiturs should not be modded "Insightful". AIG's insurance operations are *not* what got them into trouble.

    - T

  88. Re:I, for one, welcome our new regulator overlords by toddestan · · Score: 1

    What are you talking about? A credit default swap is basically an insurance policy.

  89. Re:I, for one, welcome our new regulator overlords by maxume · · Score: 1

    AIG?

    Of course, 'completely unregulated framework' and 'corporation' are pretty incompatible.

    --
    Nerd rage is the funniest rage.
  90. Re:I, for one, welcome our new regulator overlords by hawk · · Score: 1

    >If it was adequately capitalised then the company wouldn't have gone under.

    No. That's just plain wrong, and has nothing to do with business or law.

    Adequate capitalization has to do with adequate for the risk being undertaken, not the outcome. This is a very well developed body of law.

    As a very vague first order test (this is not the actual test), would another business extend it credit given the risks it faces and its capitalization. If a bank will extend it unsecured credit, it's probably sufficiently capitalized.

    hawk, esq

  91. Re:I, for one, welcome our new regulator overlords by hawk · · Score: 1

    OK, this I've never seen before. A hard-core libertarian has proposed too much regulation :)

    This guy was in the "government isn't necessary" group of hard-core libertarians, who really wanted to form a "libertarian free state" in Antarctica . . .

    hawk

  92. Re:I, for one, welcome our new regulator overlords by Anonymous Coward · · Score: 0

    What are you talking about? A credit default swap is basically an insurance policy.

    Not really. For the issuer of the CDS, it offloads risk to a third party, but for the investor, it's much like commodities speculation, including in particular the futures strategy of simultaneously going long and short as a hedge. Note the bullet in the wiki page, "in the United States CDS contracts are generally subject to mark to market accounting, introducing income statement and balance sheet volatility that would not be present in an insurance contract", emphasis mine.

    That being said, DAldredge was responding to "The insurance company will regulate far tighter and more effectively than the government." AIUI, AIG's insurance arm is separate from its investments arm, and appears to have been run responsibly and profitably. In this way, bringing up the AIG fiasco in response to hawk's post was a non-sequitur.

    Also, I disagree with hawk's assertion in this case. Private business works well for many things, but I wouldn't want nuclear safety ultimately left solely to profit-motivated entities. Government regulation and oversight (if done properly) has a crucial role in nuclear safety.

    - T

  93. Re:I, for one, welcome our new regulator overlords by marco.antonio.costa · · Score: 1

    You forget the monetary unit in the US is produced by the Federal Reserve, a central bank with a monopoly on the issuance of currency, which is ultimately responsible for inflating this latest ( and other ) bubbles with easy credit.

    Hardly a laissez-faire monetary system. If the US had sound money and free banking this monstrous bubble and it's 'pop' would not have been possible.

    --
    Send your spendthrift head of state this
  94. Where Wolverine find out his wife is still alive. by Anonymous Coward · · Score: 0

    The new x-men movie is really bad if it has to throw in three-mile island.

  95. Re:I, for one, welcome our new regulator overlords by marco.antonio.costa · · Score: 1

    I really didn't mean my statement at a quantum scale. But I know you knew what I meant and I know it was just meant as a comeback.

    Good one, there, made me look like an idiot. =)

    --
    Send your spendthrift head of state this
  96. TMI was MUCH MUCH worse than you think. by Anonymous Coward · · Score: 0

    The TMI disaster came within a fraction of being as bad as chernobyl. There was a hydrogen explosion when the zirconium cladding of the fuel rods in the exposed core reached the ignition temperature and burned in an atmosphere of pressurized steam. The hydrogen explosion blew the top off of the reactor vessel and caused a shock wave that came within 10% of the ultimate yield strength of the concrete containment dome. If the dome had fractured, there would have been a thermite like fire of burning zirconium and uranium that would have volatilized the entire core and sent a plume of tons of uranium oxide dust that would have contaminated all of eastern Pennsylvania, upstate New York and the rest of New England. Luckily, the dome did not fracture and the fire burned out when it exhausted the oxygen in the dome.