Mostrar mensagens com a etiqueta NRC. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta NRC. Mostrar todas as mensagens

segunda-feira, 5 de abril de 2021

Dysfunctional Anti Nuke Waste Strategy Increases Nuclear Risk


Back in the 1970s when he led the anti nuclear movement in the US, Ralph Nader helped conceive the strategy to “constipate” the nuclear industry.

The plan was to convince the public that nuclear waste was impossible to dispose of safely, and therefore, the nuclear power industry should be phased out. This kind of adversarial debate is deemed essential to the functioning of US democracy I don’t criticize Nader for exercising his right to speak freely.

However, the actions of those taking this side of the debate will increasingly be seen as inappropriate in the light of events at Fukushima. People opposed to nuclear power have stopped any and every effort to solve the waste problem, compounding a risk that they say is their greatest fear.

Fukushima brings the result of these actions into sharper focus. That we continue to store accumulating nuclear waste above ground instead of where the industry and scientists involved envisioned it would be safely be by now – underground – is primarily due to the efforts of those who oppose the existence of the nuclear industry.

One “lesson learned” from Fukushima has to be that society finds anti nuclear political strategy that is calculated to increase nuclear risk unacceptable.

Obviously this is the US, where politics has become whoever shouts the loudest, who has spent the most lobbying Congress, and facts don’t matter. This call will go down the drain along with the far more urgent calls to actually reform the financial system, do something about the deficit, or start acting on the climate problem.

But let’s pretend that rationality prevailed for an instant.

The greatest concern at the height of the crisis at Fukushima was “what if” a spent fuel pool went dry. Knowledgeable observers were sanguine about what could possibly happen at one of the reactors, given that Three Mile Island had demonstrated that even a core meltdown of 10 – 20 tonnes in an American designed reactor wasn’t going to so much as penetrate the pressure vessel, never mind getting out of containment to cause a massive release of radioactive fission products into the region surrounding the plant.

But spent fuel pools are not in containments, and as it became clear that the carefully conceived plans for what to do in every eventuality had been swept away by the “beyond design specification” tsunami, people started to ask “what if”. see: NRC Description of a “Loss of Pool Coolant” Event”

Critics had long insisted that there was a credible risk. A highest level “independent expert panel”, i.e. the NAS NRC, which reported in 2006, had been created by Congress precisely to evaluate the nightmare scenarios these people had been publicly waving around. The concern then was “what if” terrorists attacked. When the entire Fukushima multi-reactor installation hit the fan to become world news the media seemed to delight in featuring these anti nuclear “experts” who had no qualms proclaiming their nightmare catastrophe was just about to occur to millions of Japanese very probably in the next instant. At that point I re-read NAS NRC 2006, wondering “what if” a Fukushima pool went dry. It said: “Some” part of these “worse than Chernobyl” scenarios involving the “loss of tens of thousands of square kilometers of land”, “should not be dismissed”.

There were no exact details. No one really knows how likely it is that a particular set of fuel rods in a particular pool, if it goes dry, will undergo a “propagating zirconium cladding fire” and cause a massive release of medium term half life fission products like cesium as a cloud that would blow wherever the wind took it, perhaps “hundreds of miles”. Perhaps there is sufficient computing power and the will to find out now. see: The Fukushima-ing Nuke Industry: Bring it to the Geeks

Even at the height of the crisis experienced voices said all they have to do is keep water in the pools. They managed to do that. So we have had a 1 in 1000 year event hit one of the oldest designs the nuclear industry still has in service that was not executed in this local instance to withstand what hit it, and even as layer after layer of its “defense in depth” was stripped away, the extremely unlikely major catastrophe did not happen.

But what seems clear as the Fukushima dust settles is that the credibility of those who would increase the size of this risk as part of whatever political strategy they have to oppose nuclear power, if they continue to do this, should be at an end.

I found a Nader interview PBS did with him in 1997. His 1970s strategy on waste was all there. He didn’t say he was trying to “constipate the industry”. But his words added up to that.

He objected to dry casks. He opposed Yucca. He doesn’t like nuclear waste where it is, and he doesn’t want it moved anywhere. Eventually the PBS interviewer nailed him down.

After Nader seemed to agree that the best thing to do would be to create a new “temporary, safe depository that maybe fifty, 100 years from now can be recovered and separated in terms of removing the hazards”, the PBS interviewer said: “So you’d support that if a monitored, retrievable site was found, as they wanted to build one, actually, in Yucca Mountain, that would be okay?

Nader: “Well, it would okay, but only if there is an independent core of scientists, geologists, engineers, who would sign off on it, who have no ties, no ambitions, either to join the nuclear industry, to join the government agency.”

PBS: “But that would be okay, even if it allowed the nuclear industry to continue, is my point”

Nader: “No. The first step is to stop it from continuing. But then you deal with the garbage”

PBS: “you don’t want this problem solved until the industry–“

Nader: “No, because it’ll just try to prolong the industry, and expand the second generation of nuclear plants”.

Nader doesn’t want this problem solved. He wants the industry killed first, even if his actions cause above ground nuclear waste to accumulate in US spent fuel pools beyond what the designers originally had in mind. Perhaps he denies the responsibility he would share if the nightmare scenario he says he fears happens as a result.
“temporary, safe depository that maybe fifty, 100 years from now can be recovered and separated in terms of removing the hazards”, the PBS interviewer said: ” So you’d support that if a monitored, retrievable site was found, as they wanted to build one, actually, in Yucca Mountain, that would be okay?
Nader then said: “Well, it would okay, but only if there is an independent core of scientists, geologists, engineers, who would sign off on it, who have no ties, no ambitions, either to join the nuclear industry, to join the government agency.”
Q: But that would be okay, even if it allowed the nuclear industry to continue, is my point.
A: No. The first step is to stop it from continuing. But then you deal with the garbage
PBS: “you don’t want this problem solved until the industry–“
Nader: “No, because it’ll just try to prolong the industry, and expand the second generation of nuclear plants”.
Nader doesn’t want this problem solved.
Decades ago expert independent panels (see my previous comment) were telling us the way to look at this was its either leave it where it is where the risk can only increase, or deal with it by moving it to a better place, i.e. geologic isolation. And decades ago, Nader staked out this position that nothing should be done about the waste because as it becomes more of a risk it will become a more powerful point people who oppose nuclear power can use in their effort to kill the entire industry, a strategy he continues to promote, as seen here, as late as 1997.

Decades ago an NAS NRC expert independent panel (i.e. Rethinking High-Level Radioactive Waste Disposal: A Position Statement of the Board on Radioactive Waste Management (1990) ) assessed the issue to that point and told us the way to look at nuclear waste was its either leave it where it is where the risk can only increase, or deal with it by moving it to a better place, i.e. geologic isolation. As long ago as 1990 it was clear that the issue was not technical. The issue was political.

The conclusion of the 1990 NAS NRC report summary had two last paragraphs under a headline “The Risk of Failing to Act”. The report had described the doomed to fail at finding a solution US approach where critics demanded absolute certainty about what would happen in 10,000 years and science could only provide an assurance that long term risk was “minimal”, with consequences that “will be limited”. The panel warned that

“The at-surface alternative may be irresponsible for the long run…”

“In judging disposal options, therefore, it is essential to bear in mind that the comparison is not so much between ideal systems and imperfect reality as it is between a geologic repository and at-surface storage. From that standpoint, both technical experts and the general public would be reassured by a conservative engineering approach toward long-term safety…”

In other words, start the waste stream moving out of the pools toward the long term solution the relevant scientists, worldwide, had a consensus about many decades ago, i.e. geological isolation, and if what could be reused by our descendants is not processed out of it for reuse before deposition, make sure whatever goes in could be recovered by them.

Nader’s “constipation” strategy is no longer ethically acceptable.

terça-feira, 19 de abril de 2011

Nuclear Nightmare- artigo de um dos gurus do consumidor


 

The unfolding multiple nuclear reactor catastrophe in Japan is prompting overdue attention to the 104 nuclear plants in the United States—many of them aging, many of them near earthquake faults, some on the west coast exposed to potential tsunamis.

Nuclear power plants boil water to produce steam to turn turbines that generate electricity. Nuclear power’s overly complex fuel cycle begins with uranium mines and ends with deadly radioactive wastes for which there still are no permanent storage facilities to contain them for tens of thousands of years.

Atomic power plants generate 20 percent of the nation’s electricity. Over forty years ago, the industry’s promoter and regulator, the Atomic Energy Commission estimated that a full nuclear meltdown could contaminate an area “the size of Pennsylvania” and cause massive casualties. You, the taxpayers, have heavily subsidized nuclear power research, development, and promotion from day one with tens of billions of dollars.

Because of many costs, perils, close calls at various reactors, and the partial meltdown at the Three Mile Island plant in Pennsylvania in 1979, there has not been a nuclear power plant built in the United States since 1974.

Now the industry is coming back “on your back” claiming it will help reduce global warming from fossil fuel emitted greenhouse gases.

Pushed aggressively by President Obama and Energy Secretary Chu, who refuses to meet with longtime nuclear industry critics, here is what “on your back” means:

1. Wall Street will not finance new nuclear plants without a 100% taxpayer loan guarantee. Too risky. That’s a lot of guarantee given that new nukes cost $12 billion each, assuming no mishaps. Obama and the Congress are OK with that arrangement.

2. Nuclear power is uninsurable in the private insurance market—too risky. Under the Price-Anderson Act, taxpayers pay the greatest cost of a meltdown’s devastation.

3. Nuclear power plants and transports of radioactive wastes are a national security nightmare for the Department of Homeland Security. Imagine the target that thousands of vulnerable spent fuel rods present for sabotage.

4. Guess who pays for whatever final waste repositories are licensed? You the taxpayer and your descendants as far as your gene line persists. Huge decommissioning costs, at the end of a nuclear plant’s existence come from the ratepayers’ pockets.

5. Nuclear plant disasters present impossible evacuation burdens for those living anywhere near a plant, especially if time is short.

Imagine evacuating the long-troubled Indian Point plants 26 miles north of New York City. Workers in that region have a hard enough time evacuating their places of employment during 5 pm rush hour. That’s one reason Secretary of State Clinton (in her time as Senator of New York) and Governor Andrew Cuomo called for the shutdown of Indian Point.

6. Nuclear power is both uneconomical and unnecessary. It can’t compete against energy conservation, including cogeneration, windpower and ever more efficient, quicker, safer, renewable forms of providing electricity. Amory Lovins argues this point convincingly (see RMI.org). Physicist Lovins asserts that nuclear power “will reduce and retard climate protection.” His reasoning: shifting the tens of billions invested in nuclear power to efficiency and renewables reduce far more carbon per dollar. The country should move deliberately to shutdown nuclear plants, starting with the aging and seismically threatened reactors. Peter Bradford, a former Nuclear Regulatory Commission (NRC) commissioner has also made a compelling case against nuclear power on economic and safety grounds.

There is far more for ratepayers, taxpayers and families near nuclear plants to find out. Here’s how you can start:

1. Demand public hearings in your communities where there is a nuke, sponsored either by your member of Congress or the NRC, to put the facts, risks and evacuation plans on the table. Insist that the critics as well as the proponents testify and cross-examine each other in front of you and the media.

2. If you call yourself conservative, ask why nuclear power requires such huge amounts of your tax dollars and guarantees and can’t buy adequate private insurance. If you have a small business that can’t buy insurance because what you do is too risky, you don’t stay in business.

3. If you are an environmentalist, ask why nuclear power isn’t required to meet a cost-efficient market test against investments in energy conservation and renewables.

4. If you understand traffic congestion, ask for an actual real life evacuation drill for those living and working 10 miles around the plant (some scientists think it should be at least 25 miles) and watch the hemming and hawing from proponents of nuclear power.

The people in northern Japan may lose their land, homes, relatives, and friends as a result of a dangerous technology designed simply to boil water. There are better ways to generate steam.

Like the troubled Japanese nuclear plants, the Indian Point plants and the four plants at San Onofre and Diablo Canyon in southern California rest near earthquake faults. The seismologists concur that there is a 94% chance of a big earthquake in California within the next thirty years. Obama, Chu and the powerful nuke industry must not be allowed to force the American people to play Russian Roulette!

Ralph Nader is a consumer advocate, lawyer, and author. His most recent book - and first novel - is, Only The Super-Rich Can Save Us. His most recent work of non-fiction is The Seventeen Traditions.

Site Oficial

segunda-feira, 4 de outubro de 2010

Reducing the Hazards from Stored Spent Power-Reactor Fuel in the United States, by Robert Alvarez

Summary
In this report, in 2003 Alvarez et al. recommended that all U.S. spent fuel older than five years should be placed in dry, hardened storage containers, greatly reducing the fire risk if water was drained from reactor cooling ponds. Casks should be placed in either thick-walled structures or in earthen berms capable of withstanding plane and missile impacts. We estimated this could be accomplished with existing cask technology in 10 years at a cost of $3 billion-$7 billion. Moreover, future reactors should be designed so that temporary cooling ponds are encased in heavy concrete containment. Such steps were taken by Germany 25 years ago in response to the threats posed by accidental fighter jet crashes and terrorist attacks.

Report here