Showing posts with label nuclear reactors. Show all posts
Showing posts with label nuclear reactors. Show all posts

06 September 2011

Quake risk to reactors greater than thought






 
 
Sep 2, 9:04 AM EDT

By DINA CAPPIELLO and JEFF DONN
Associated Press


WASHINGTON (AP) -- The risk that an earthquake would cause a severe accident at a U.S. nuclear plant is greater than previously thought, 24 times as high in one case, according to an AP analysis of preliminary government data. The nation's nuclear regulator believes a quarter of America's reactors may need modifications to make them safer.

The threat came into sharp focus last week, when shaking from the largest earthquake to hit Virginia in 117 years appeared to exceed what the North Anna nuclear power plant northwest of Richmond was built to sustain.

The two North Anna reactors are among 27 in the eastern and central U.S. that a preliminary Nuclear Regulatory Commission review has said may need upgrades. That's because those plants are more likely to get hit with an earthquake larger than the one their design was based on. Just how many nuclear power plants are more vulnerable won't be determined until all operators recalculate their own seismic risk based on new assessments by geologists, something the agency plans to request later this year. The NRC on Thursday issued a draft of that request for public comment.

The review, launched well before the East Coast quake and the Japan nuclear disaster in March, marks the first complete update to seismic risk in years for the nation's 104 existing reactors, despite research showing greater hazards.

The NRC and the industry say reactors are safe as they are, for now. The average risk to U.S. reactors of core damage from a quake remains low, at one accident every 500 years, according to the AP analysis of NRC data

Read more:
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2011/09/01/MNLM1KV7P8.DTL

29 March 2011

Worse Than Chenobyl. When the Fukushima Meltdown Hits Groundwater

By Dr. Tom Burnett

March 29, 2011 "
Hawai'i News-" -- March 27, 2011 --  Fukushima is going to dwarf Chenobyl. The Japanese government has had a level 7 nuclear disaster going for almost a week but won’t admit it.

The disaster is occurring the opposite way than Chernobyl, which exploded and stopped the reaction. At Fukushima, the reactions are getting worse. I suspect three nuclear piles are in meltdown and we will probably get some of it.


If reactor 3 is in meltdown,  the concrete under the containment looks like lava. But Fukushima is not far off the water table. When that molten mass of self-sustaining nuclear material gets to the water table it won’t simply cool down. It will explode – not a nuclear explosion, but probably enough to involve the rest of the reactors and fuel rods at the facility.


Pouring concrete on a critical reactor makes no sense – it will simply explode and release more radioactive particulate matter. The concrete will melt and the problem will get worse. Chernobyl was different – a critical reactor exploded and stopped the reaction. At Fukushima, the reactor cores are still melting down. The ONLY way to stop that is to detonate a ~10 kiloton fission device inside each reactor containment vessel and hope to vaporize the cores. That’s probably a bad solution.


A nuclear meltdown is a self-sustaining reaction. Nothing can stop it except stopping the reaction. And that would require a nuclear weapon. In fact, it would require one in each containment vessel to merely stop what is going on now. But it will be messy.


Fukushima was waiting to happen because of the placement of the emergency generators. If they had not all failed at once by being inundated by a tsunami, Fukushima would not have happened as it did – although it WOULD still have been a nuclear disaster. Every containment in the world is built to withstand a Magnitude 6.9 earthquake; the Japanese chose to ignore the fact that a similar earthquake had hit that same general area in 1896.


Anyway, here is the information that the US doesn’t seem to want released. And here is a chart that might help with perspective.


Making matters worse is the MOX in reactor 3. MOX is the street name for ‘mixed oxide fuel‘ which uses ~9% plutonium along with a uranium compound to fuel reactors. This is why it can be used.
The problem is that you don’t want to play with this stuff. A nuclear reactor means bring fissile material to a point at which it is hot enough to boil water (in a light-water reactor) and not enough to melt and go supercritical (China syndrome or a Chernobyl incident). You simply cannot let it get away from you because if it does, you can’t stop it.


The Japanese are still talking about days or weeks to clean this up. That’s not true. They cannot clean it up. And no one will live in that area again for dozens or maybe hundreds of years.

19 December 2007

Nuke industry is on the Verge of Getting $25 billion Handout

http://www.alternet.org/stories/70924/

By Amy Goodman, Democracy Now!. Posted December 18, 2007.


Congress is about to dump billions on an industry that has been unprofitable for 50 years.

The House is set to vote on Tuesday on the $500 billion 2008 Omnibus Appropriations Bill. Unveiled on Sunday, the measure covers budgets for all cabinet departments except the Pentagon. It's expected to pass both houses of Congress this week.

Hidden in the bill is a major energy package that would boost government financing for the nuclear industry. It would provide loan guarantees of up to $25 billion for new nuclear reactors. A massive grassroots campaign forced these taxpayer-financed loans out of the national energy bill earlier this month, but last week Republican Senator Pete Domenici of New Mexico slipped them back into the budget vote.

Harvey Wasserman has been at the forefront of raising awareness about the dangers of nuclear power. He helped found the grassroots anti-nuke movement in the early 1970s, advises the Nuclear Information and Resource Service. He's senior editor of the Ohio-based freepress.org and editor of nukefree.org. Harvey Wasserman has also co-authored two books on the 2004 election. They are How the GOP Stole America's 2004 Election and Is Rigging 2008 and What Happened in Ohio: A Documentary Record of Theft and Fraud in the 2004 Election.

Amy Goodman: Welcome to Democracy Now! ... Talk about this energy bill.

Harvey Wasserman: Well, we beat Pete Domenici. With Bonnie Raitt, Jackson Browne, Graham Nash, Keb' Mo', Ben Harper, we put out a music video on nukefree.org. We raised 120,000 signatures and presented them to Congress in October. And Domenici was forced to pull these nuke loan guarantees out of the energy bill, but then slipped them back into the appropriations bill.

And the nuclear power industry is a fifty-year proven failure, and they can't get independent financing to build their own new reactors, which they want to do now. And so, they've gone to the government. This is one issue where we're in agreement with Forbes magazine and the Cato Institute, which is backing the opposition to these loan guarantees, because if nuclear power, after fifty years of huge government subsidies, can't make it in the marketplace, why should the taxpayers fund another $25 billion worth of reactor construction?

We're on the brink of a tremendous energy revolution in solar, wind, tidal, geothermal. You know, we're looking almost at a solartopia of a renewable-based economy, which will be much more controllable at the grassroots, much more democratically oriented. And that's why the nuclear power industry is desperately holding on here.

Goodman:So who are its backers, aside from Pete Domenici?

Wasserman: Well, we have Westinghouse, General Electric -- the usual suspects -- Ariva, a large French company, all wanting to go into the -- to revive the so-called nuclear renaissance. You know, we've been trying for fifty years to drive the stake through the heart of an industry that doesn't seem to have one.

And there's absolutely no demand for new nuclear plants. There's no reason to build them. They don't work. Even with optimum conditions of licensing and so on, they couldn't get a reactor online for another ten years. They've been saying the nuclear power plants are a solution to the global warming problem; we know they make global warming worse. You know, it's a total scam. And they are continuing to take of taxpayer money, public money, to build reactors where we don't need that kind of financing for wind, for solar, for tidal, geothermal, the other forms of green energy, which can be community-controlled.

And so, these subsidies, these loan guarantees in the appropriations bill, we are asking people, through the nukefree.org website, to call Congress, call the congressional leadership, Harry Reid, Nancy Pelosi -- David Obey is very key as the congressional chair of the House Appropriations Committee, Mitch McConnell on the Republican side -- and tell them: get these loan guarantees out of the appropriations bill.

Goodman:So talk about how it worked over this last month -- went in, went out, went in.

Wasserman: Yes. Well, under tremendous pressure with the signatures that we brought in from nukefree.org to the Congress -- we had Ed Markey, John Hall, Shelly Berkeley at our press conference, support from John Edwards, Dennis Kucinich, other key green energy backers -- Domenici was forced to pull these subsidies out of the energy bill. It was a very big victory for us.

Actually, there were much worse subsidies. There was a loan guarantee for the DOE that was essentially without any congressional appropriations oversight. Now we've got it down to a one-year $25 billion -- down to a one-year $25 billion subsidy. Even that's too much, way too much.
The nuclear power industry is a terror target just waiting to be hit. We don't need these reactors. They're devastatingly dangerous to the environment. They're destructive of public health. It was shown forty years ago that regular so-called normal emissions from nuclear plants kill thousands of Americans every year. This was by head of the Atomic Energy Commission's own medical research division. So, you know, this is something that is being prolonged at the expense of the public health and the public treasury.

The appropriations, as you say, they were pulled out of the energy bill due to public pressure, but Pete Domenici is the senator for nuclear power, and he's very clever at congressional manipulation.

Goodman:Why is he so wed to nuclear power?

Wasserman: He's the guy -- he's been their point guy for decades. You know, he is the senator from New Mexico, and he's been the man that the nuclear power industry has gone to to further their interests in Congress.
Goodman:And he'll be leaving next [inaudible] in 2009.

Wasserman: He will be leaving, not soon enough, as far as we're concerned, but he's been forcing these appropriations in -- you know, he tried the farm bill. Now, we beat him on the energy bill. He tried to put them in the farm bill. Then he tried to slip them into the global warming bill, and then Nancy Pelosi, Speaker of the House, pulled them out. We've gotten good support from Senator Pelosi -- Senator Reid and Speaker Pelosi, but we need more from Congressman Obey and from the Republican side. You know, these Republicans, who are supposedly conservatives, shouldn't be for subsidizing industries like the nuclear power industry. It's an obsolete proven failure.

Goodman:What if the nuclear industry doesn't get these loan guarantees?

Wasserman: It's a very big deal. They can't build new nuclear plants. No -- Wall Street will not finance new nuclear construction. We are actually in solidarity with the financial community here. Nobody wants to back nuclear power plants. They are a failure. They cannot compete now with wind energy or with solar or tidal or the other green forms of energy, even of flat-out marketplace. And so, if they don't get these loan guarantees, they're not going to be building new nuclear plants, and we will be going to wind and solar and to a solartopian, you know, energy version -- vision. So we really -- this is a very big deal to stop these appropriations. And, you know, like I say, we're actually in conjunction with the old-time right wing here who actually believes in a free market.

Goodman:You talk about King CONG madness.

Wasserman: That's right.

Goodman:That's coal, oil, nukes and gas.

Wasserman: Coal, oil, nukes and gas.

Goodman:The International Climate Change Summit in Bali ended with no new plan to cut greenhouse gas emissions.

Wasserman: Astonishing. It's astonishing. Here, they give the Nobel Prize to Al Gore for warning us all about global warming. You know, I'm waiting for Al Gore to get arrested at the Indian Point Nuclear Plant. That's when he'll really deserve the Nobel Prize. You know, but the power of the coal, oil, nukes and gas conglomerates -- King CONG, as we call them -- is astonishing. To have the whole world focused on global warming and then come to this conference and not be able to get even a simple agreement is astounding. And it's really a terrifying testimony to the power of these corporations.

Goodman:Well, Al Gore went there and said, I name "the elephant in the room": the United States.

Wasserman: Yes. And, you know, it's a disgrace. It's an embarrassment to the world that the United States would stand -- here we're standing on the brink of a technological revolution that would really parallel the information revolution of the '90s. You know, we had the spread of the internet, the boom in computerization that really brought us prosperity. We could have a repeat of that, if we got away from nuclear power, coal, oil, nukes and gas and went into green power. But, you know, the Bush administration won't let it happen.

Goodman:How would green power look? I mean, you have the oil companies fighting hard against alternative energy, but at the same time -- I mean, like BP calling themselves "Beyond Petroleum" -- at the same time, seeing the writing on the wall, trying to get right in there. Now, there is a way to do this in a centralized way, isn't there? And isn't that what they're trying to get in on?

Wasserman: Yeah. They want to centralize and keep control of their energy supplies, of our energy supplies. And nuclear power is the ultimate way to do that, and then coal, oil and gas let them keep control over it, where the model we're working on --

Goodman:But even alternative.

Wasserman: Yeah.

Goodman:Even wind and solar.

Wasserman: They're not -- but I think they've realized they can't do it. Solar and wind cannot be centralized the way nukes, coal and oil can, because they are, of essence, decentralized technologies, and they can be community-owned. We're working in Minnesota and other states on a model of community-owned wind power, which we now have $100 million worth of community-owned wind in Minnesota.

Goodman:Doing what?

Wasserman: Doing -- generating cheap electricity, owned by the farmers on whose land it is and by the communities that get the electricity. This is the moment of terror for the coal, oil, nukes and gas industries, because they can't control this energy. And if we get -- that's why we need to stop these appropriations, because if they can't get the loans to build nuclear plants, all the money is going to go where it belongs, which is to green power. You know, with the information revolution, we didn't have an institutional barrier. With the renewable energy industry and with, you know, getting to solartopia, we do have the institutional barriers of the coal, oil, nukes and gas industry, and the nuke industry is really the vanguard, because it's the ultimate centralized --

Goodman:And you have some environmentalists who are pushing nukes. They are saying it's cleaner.

Wasserman: Very, very few. You know, it's been a miniscule -- you look at all the money the industry have, they have only been able to pick up a few marginal players. We had a press conference in D.C., and all the major environmental groups were right there: Sierra, League of Conservation Voters, Greenpeace. You know, they're with us. No major environmental group has gone to the dark side for nuclear power.

Goodman:Where does Bush stand?

Wasserman: You know, in a very deep radioactive hole, where -- exactly where you'd expect. They're pushing, you know, this industry. Actually, Dick Cheney has very serious interests in pushing nuclear power. And, you know, he's been right behind the scenes with Domenici there.

Goodman:What are his interests?

Wasserman: His interests are very corporate, and he wants controls. You know, the nuclear power -- as long as they're putting money into nuclear power, we're not going to get away from coal, oil and nukes and gas. Nuclear power is really the cutting edge for the fossil fuel industry. And if the nuclear barrier breaks, all the money -- all the new money is going to go to renewables. And so, they are terrified -- the coal, oil, nuke and gas industries -- of renewables. And so, nuclear power is really their finger in the dam, because once everything breaks, it's all going to go to renewables, and we'll have a transformed world.

Amy Goodman is the host of the nationally syndicated radio news program, Democracy Now!