First New US Nuclear Reactor In 20 Years Goes Live (cnn.com)

An anonymous reader quotes a report from CNN: The Tennessee Valley Authority is celebrating an event 43 years in the making: the completion of the Watts Bar Nuclear Plant. In 1973, the TVA, one of the nation's largest public power providers, began building two reactors that combined promised to generate enough power to light up 1.3 million homes. The first reactor, delayed by design flaws, eventually went live in 1996. Now, after billions of dollars in budget overruns, the second reactor has finally started sending power to homes and businesses. Standing in front of both reactors Wednesday, TVA President Bill Johnson said Watts Bar 2, the first U.S. reactor to enter commercial operation in 20 years, would offer clean, cheap and reliable energy to residents of several southern states for at least another generation. Before Watts Bar 2, the last time an American reactor had fired up was in 1996. It was Watts Bar 1 -- and according to the Atlanta Journal-Constitution, it cost $6.8 billion, far greater than the original price tag at $370 million. In the 2000s, some American power companies, faced with growing environmental regulations, eyed nuclear power again as a top alternative to fossil fuels such as coal and oil. A handful of companies, taking advantage of federal loan guarantees from the Bush administration, revived nuclear reactor proposals in a period now known as the so-called "nuclear renaissance." Eventually, nuclear regulators started to green light new reactors, including ones in Georgia and South Carolina. In 2007, the TVA resumed construction on Watts Bar 2, according to the International Atomic Energy Agency. The TVA originally said it would take five years to complete. The TVA, which today serves seven different southern states, relies on nuclear power to light up approximately 4.5 million homes. Watts Bar 2, the company's seventh operating reactor, reaffirms its commitment to nukes for at least four more decades, Johnson said Wednesday. In the end, TVA required more than five years to build the project. The final cost, far exceeding its initial budget, stood at $4.7 billion.

Comments

Re:From the article

[Anonymous Coward]

Rubbish. Steam engines produce steam.

We're talking about a nuclear power plant here so those are nuclears coming out of that tower.

Nuclear research needed!

[Gravis Zero]

Uranium "breeder" reactor technology is a throwback to the days of nuclear arms proliferation because if you can continually use the fissile material it generates then it will eventually create weapon's grade Plutonium. What we really need is to invest in the research needed to make a fourth generation reactor that transmutes Thorium a few times before finally making it into a Uranium isotope that is "burned" for power, destroying the fissile material instead of stockpiling it. This makes the possibility of a meltdown physically impossible making it safe enough fully automate without the need for human oversight. If made into small unmanaged units (one buried every X miles) it would be a poor attack target (minimal impact). Basically, you stream in some water, start the reaction and it will churn out electricity and warm water for the century, given a small pile of Thorium.

The idea has been around a long time and in the 80s, congress even refused to fund the research to build a reactor because it couldn't be used to make weapons.

It's past time to start using nuclear physics to cleanly and safely power the globe.

Re:Nuclear research needed!

[KonoWatakushi]

Your "easily" is still considerably more difficult than producing weapons grade materials the old fashioned way, so how does it matter? The fuel salt in a molten salt reactor is the safest place for any materials that pose a proliferation threat. It is both thermally and radiologically very hot, and confined to a chemical processing hot cell or the reactor itself, which makes it rather difficult to walk off with. Little of the thorium ends up as Np-237 in the first place, and it doesn't stop there--the reactor will turn it into Pu-238 and so on.

The standard LFTR design does not have the facilities to separate the Np-237 which comes out of the fuel salt with along with UF6, and goes right back into the core. A thermal breeder using the thorium fuel cycle has a very small margin for neutron loss, and if the fissile is diverted, the reactor will stop. Extra care will need to be taken with machines configured to produce Pu-238, but even that poses a significant challenge for diversion, and similarly will not go unnoticed.

Furthermore, this is the machine which is capable of making every nation on earth energy independent, and ending essentially all resource conflict. Once a nation has that, there is little motivation to produce bombs and risk losing it. There is also the fact that reactors provide the only means of destroying weapons grade materials, and provide abundant energy as a byproduct. Obstructing nuclear energy prevents that from ever happening, and will pose a substantially greater risk.

Good!

[GerryGilmore]

As a proud, card-carrying TreeHugger(TM) I am happy to see nuclear power remaining a viable component of our national electrical baseline capacity. Let's be real: when coal (especially) is the main alternative for providing the huge baseload requirements of a solid electrical infrastructure, it's a no-brainer to have nuclear be a portion of the multi-legged stool we need.

Budget and Timelines

[Notabadguy]

Disclaimer: Until recently, I was in the business of building nuclear plants.

When I say that over-regulation, discord between the NRC and ASME, NIMBY trolls, and congressional oversight cause cost and lead time issues, I don't mean that energy companies are trying to bypass safety regulations to accelerate building - there are literally too many people who don't know enough about nuclear plants in decision-making positions.

Here's a true story.

WEC is the prime contractor constructing Summer and Vogtle. After farming out subs to various entities, with defined scopes of work, timelines required to design / install / test / etc - the entire gamut of a multi-billion dollar project...work began. In 2012, during one of the ASME conferences, the ASME committee changed the definition of SA316 forged steel. I won't bore you with the details, but the change they implemented into ASME standards changed the dimensions that SA 316 bar stock could be forged into (for fear that too large of a bar would create structural weakness in the center) - whereas the primary use of 316SS within the context of ASME Section 7 is for creating safety valve bonnets - in this case, for the valves in containment. A bonnet is cored out - hollowed out - leaving no internal metal in the 4" center radius ASME flagged.

However, ASME is responsible to no one. Their decision was decried and appealed by the entire nuclear industry, but ASME answers to no one, and the NRC has no input into ASME standards. Since Summer and Vogtle required congressional approval to build, including design approval - ASME changing the definition of 316SS required a design change in the plans for the nuclear plants, which in turn required congressional approval.

1. Tens of millions in material got scrapped.
2. Tens of hundreds of millions in labor hours between prime and sub-suppliers were wasted - design, engineering, procurement, project management...

And this is ONE tiny decision made by ONE body with regulatory oversight amidst dozens of stakeholders making decisions and changing scopes - not least of which are political bodies. I have dozens of stories just like it.

So rain clouds are all steam now?

[dbIII]

All of it does. It's water, not steam.
You were aiming to correct me but you mist :)

Re:From the article

[Nidi62]

Frrom the article:

TVA President Bill Johnson said Watts Bar 2, the first U.S. reactor to enter commercial operation in 20 years, would offer clean, cheap and reliable energy to residents of several southern states for at least another generation.

Clean - as long as you don't count the radioactive waste that has to be stored somewhere for the next thousand years.

Stored for the next thousand years, but ideally (if it weren't for NIMBYs) stored in secured and protected underground caverns where the radioactivity is isolated and contained. As opposed to coal, which spreads radioactivity all over the place or fossil fuels which release massive amounts of greenhouse gasses. Isn't it better to make a very small, unused area really dirty compared to making large swathes of used and inhabited lands only kind of dirty? And in those thousand years that we are storing the nuclear waste we may come up with technology that can reuse that waste for some other purpose.

Re:From the article

[Chas]

Just the sheer amount of deaths per terawatt caused by nuclear power should make people rethink it. Nothing even comes close.

You mean that whopping number of ZERO?

You're right. Pretty much everything out there has a higher death count than nuclear, even when taken individually. So you're right. Nothing even comes close.

Re:6.8 Billion

[Loki_1929]

Someone on Reddit already ran these numbers. For the money spent on this nuclear plant after it was stopped/restarted/held up by red tape/hit by NIMBY BS/etc, you could build enough solar to power 274,000 homes; a fraction of what the nuclear option provided. You also have to consider how much area that much solar or wind would cover and the impacts to the local environment and wildlife. Finally, there's the death toll. Both solar and wind power - per kWH generated - cause more human deaths than nuclear power. And I don't believe any of this considers actual power generation vs nameplate generation. That solar plant is going to generate roughly 30% of what it's slated peak output suggests due to weather, night time, etc. In the US, we run our nuclear power plants at about ~93% with the remaining time lost to maintenance, refueling, etc.

In other words, your "renewables" cost several times as much even with all the red tape thrown in nuclear's path, they generate far less power, they kill more humans, have a much greater environmental impact, and basically just fucking suck in every comparison. When we're talking about solar, the panel construction requires all kinds of horrifically toxic stuff to be put together. Both wind and solar require huge amounts of batteries; also a toxic mess. Reprocessing nuclear fuel cuts the waste down to almost nothing. A family of four that has their entire lives powered from birth to death by nuclear will be responsible for nuclear waste that fits in a Coke can. And once you're reusing the high-energy waste products, almost everything that's left is so low-energy it poses no significant risk.