Slashdot Mirror


User: Coren22

Coren22's activity in the archive.

Stories
0
Comments
10,163
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 10,163

  1. Re:Details on US Small-Scale Nuclear Reactor Industry Gains Traction In Missouri · · Score: 2

    Here is an article explaining the safety features of the 4S:

    http://www.roe.com/pdfs/technical/Galena/20070312_Containment_Whitepaper_Rev01.pdf

    Specifically interesting to me:

    Important features of the design of the 4S include:
    -fModular construction, which will reduce costs and construction time
    -Nuclear systems that are embedded below grade, resulting in safety and security
    benefits
    f-Liquid sodium coolant, which does not react with core internals or piping
    f-Coolant that is not highly pressurized, which minimizes stresses on the plant systems
    f-Passive safety systems that do not depend on emergency power to function
    f-Negative reactivity temperature coefficients that cause the reaction rate in the core to
    slow down as temperatures rise
    -Air-cooled reactor vessel, steam generator, and condenser, so that no coolant water or
    intake structures are required
    -30-year core life, which avoids the need to refuel, eliminates fuel storage, and
    minimizes fuel handling concerns
    -Capability of load following without mechanical operation of reactor control system
    f-Ease of decommissioning by containment of all radioactive materials within the
    reactor module throughout the life of the plant.

  2. Re:Details on US Small-Scale Nuclear Reactor Industry Gains Traction In Missouri · · Score: 1

    Did you read about the 4S? It is sodium cooled, not water cooled. I don't even think there is a steam cycle involved with that reactor as it is listed as a sealed reactor. It is probably more like a sodium cooled RTG.

  3. Re:How does the MTBF scale? on US Small-Scale Nuclear Reactor Industry Gains Traction In Missouri · · Score: 1

    They just put up lawsuits against the reactors, which causes the energy company to spend money defending themselves, and either delay the reactor, or get it completely stopped. The "econutters", or NIMBYS as I prefer to call them, are the biggest problem with getting new reactors online in the US.

  4. Re:How does the MTBF scale? on US Small-Scale Nuclear Reactor Industry Gains Traction In Missouri · · Score: 2

    Also, the Toshiba 4S (which this is most likely) is pretty safe to begin with as it is sealed, and uses liquid sodium which has a tendency not to boil (understatement...)

    http://en.wikipedia.org/wiki/Toshiba_4S

    There are also some designs utilizing Thorium that look pretty promising. The Thorium232 requires neutron input to convert to U235, which then is the fission source, so when something happens, power to the reaction is cut off and the thorium just stops being converted, and no more reaction.

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

  5. Re:How does the MTBF scale? on US Small-Scale Nuclear Reactor Industry Gains Traction In Missouri · · Score: 1

    California could probably fund that stuff if they did not give more money in federal income tax than they receive.

    They could also fund there programs better if every costly program came with a funding section too. Something like the taxes/fees go up by x% to fund this program. The problem has been that California separates funding bills from spending bills, and all funding bills must be voted on by the populous.

  6. Re:Gasoline-like energy density on IBM Creates 'Breathing' High-Density Lithium-Air Battery · · Score: 1

    I would think the danger from gas fumes in this mythical air tight garage would be more of a concern even than hydrogen...

  7. Re:Gasoline-like energy density on IBM Creates 'Breathing' High-Density Lithium-Air Battery · · Score: 1

    Engine, transmission, gas tank, exhaust. Just make the batteries into the floor with a bit of armoring on the bottom and it would probably work out smaller.

  8. Re:Gasoline-like energy density on IBM Creates 'Breathing' High-Density Lithium-Air Battery · · Score: 5, Informative

    The plug performs a "handshake" and won't go full power without a safely mated connection. There are people who think of these things.

  9. Re:Not "linearly" on IBM Creates 'Breathing' High-Density Lithium-Air Battery · · Score: 1

    In AC applications sure, in DC, no.

  10. Re:Nasa needs to build a bio dome on NASA Unveils Greenest Federal Building In the Nation · · Score: 1

    For Oxygen production, forest is about the worst you can get. When a tree gets over a certain age (not sure...not a plant scientist) it consumes more oxygen than it produces. You are much better off with Algae, or some kind of grass.

  11. Re:Was he really naive enough to expect otherwise? on Whistleblower In Limbo After Reporting H-1B Visa Fraud At Infosys · · Score: 1

    Bradley Manning is about the worst name to put on a whistle blower law. He wasn't blowing the whistle on corruption, but to the best that we can tell (they never confirmed he was the leak to wikileaks) he just made a huge dump of classified data, most of it not breaking any laws, but with a few juicy bits.

  12. Re:Spain, Italy and Greece on Portugal Is Considering a "Terabyte Tax" · · Score: 1

    I have seen CD recorders, and a friend has a DVD recorder, they are less unusual in the computer illiterate market.

  13. Re:Not really on Indian Man Charged With Blasphemy For Exposing "Miracle" · · Score: 1

    Except if you leave the Church of Scientology.

  14. Re:Not really on Indian Man Charged With Blasphemy For Exposing "Miracle" · · Score: 1

    The Catholic Church believes that nothing in Evolution conflicts with God being a creator. The Catholic Church is where science came from; there were a few disagreements where certain popes were unwilling to accept scientific results, but for the most part, Catholicism is willing to accept scientific findings.

  15. Re:Defense on University of Pittsburgh Deluged With Internet Bomb Threats · · Score: 1

    We have tried it. Guns were outlawed in Detroit and DC for a while, they turned into extremely high crime cities (mostly armed robbery, if you know your target is unarmed, you get more ballsy). But than again, Baltimore never outlawed guns, but was the murder capital of the nation for a while there.

  16. Re:Oh, that's bullshit! on Data Center Staff Will Sleep Among the Racks For London Olympics · · Score: 1

    I work 50 hours in a week, I get a pat on the back. I work 30 hours in a week, and no one gives me a hard time. It balances out, and as salaried, I don't have to worry about my pay decreasing when I can't work a full 40 for various reasons.

  17. Re:Predictable on North Korea Shows Off Space Center and Launches Missile · · Score: 1

    You do realize that the US is the primary source for aid for the entire world? If homelessness could be cured, it would already have been done. Unfortunately, homelessness often stems from mental disorders, and locking the people (who have major mental disorders) up in a mental hospital is seen as inhumane.

  18. Re:Kaputnik on North Korea Shows Off Space Center and Launches Missile · · Score: 1

    You don't think the US could track the real launch and verify its breakup? I am pretty sure that that launch was tracked by multiple countries just in case it was a real nuclear attack.

  19. Re:Kaputnik on North Korea Shows Off Space Center and Launches Missile · · Score: 1

    Wow, aren't you opinionated. It is widely agreed that the only use of nuclear weapons against a civilian target was justified. The Japanese wouldn't have given up until the emperor was captured otherwise, which would have cost many lives on both sides.

    Also, the US is threatening NK and Iran BECAUSE they are building nuclear weapons. They were left alone for quite a long time before they started the nuclear weapons development plans and the ballistic missile development.

  20. Re:Defense on University of Pittsburgh Deluged With Internet Bomb Threats · · Score: 1

    Do you really think that enacting gun control laws will have any effect on the people who do random shootings?

    Outlawing guns only takes guns from the law abiding.

  21. Re:any sound in the world.... on Audi Gives Silent Electric Car Synthetic Sound · · Score: 1

    What about hearing Justin Bieber come by you everytime a pube drives his car past your block?

    Too late...

  22. Re:Autism on Lack of Vaccination Sends Babies In Oregon To the Hospital · · Score: 1

    But he did...

  23. Re:Oh, that's bullshit! on Data Center Staff Will Sleep Among the Racks For London Olympics · · Score: 1

    IT workers in the US don't get overtime, they are overtime exempt employees. I imagine there are companies that do pay overtime for IT, but I haven't ever heard of them.

  24. Re:What? on Hybrid Car Owners Not Likely To Buy Another Hybrid · · Score: 1

    So, the Volt is sufficiently different from a series hybrid to not call it a series hybrid? Did you read what a series hybrid is?

    Series hybrids have also been referred to as range-extended electric vehicles (REEV) where they are designed to be run mostly by the battery, but have a petrol or diesel generator to recharge the battery when going on a long drive. (...) Alternatively, it can be viewed as an electric transmission, with the battery storing reserve power until it is needed.
    Series-hybrid vehicles are driven only by electric traction. (...) Unlike combustion engines electric motors matched to the vehicle do not require a transmission between the engine and wheels shifting torque ratios. (...) In a series-hybrid system, the combustion engine drives an electric generator instead of directly driving the wheels. The generator provides power for the driving electric motors. In short, a series-hybrid is simple, the vehicle is driven by electric motors with a generator set providing the electric power.

    The Volt is a series hybrid, there was an experimental EV1 that used the same principle, and the same principle is used with diesel electric hybrid trains.

  25. Re:Good luck with that fair trial thing on Zimmerman Charged With 2nd-Degree Murder · · Score: 1

    Just walked by a TV at work with CNN, aparently there is a witness who say Treyvon attacking Zimmerman before he was shot. The witness's account and Zimmerman's agree that he was on the ground getting beat on, Zimmerman said Treyvon was bashing his head into the ground. Self defense is perfectly legal, if someone is using deadly force on you, you are justified in responding in kind.