Exploring Hydrocarbon Depletion
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The concrete building housing Reactor One, blown apart in the first explosion on 12 March, is now completely covered with a tarpaulin to contain its radioactivity. As our bus drives past the building, the beeping dosimeters climb to 100 microsieverts an hour. But as the most badly damaged Reactor Three looms into sight, its mess of tangled metal and steel gives off a startling reading of 1,500 microsieverts. Its cargo of lethal fuel includes plutonium and the roof of the building housing the reactor was blown off in the second explosion. "It's still too dangerous for workers to enter Reactor Three," says engineer Yasuki Hibi.
Tanada wrote:Fact #1, the reactor at Fukushima that caused 85% of the problems was scheduled for decommissioning within moths of the time the Tsunami struck.
AdTheNad wrote:Tanada wrote:Fact #1, the reactor at Fukushima that caused 85% of the problems was scheduled for decommissioning within moths of the time the Tsunami struck.
This seems a strange thing to bring up, considering how many other reactors around the world that have been scheduled for decommissioning end up being given extensions. I have no links or anything to back that up, but it's how a recall seeing things being said in various threads, so please correct me if I'm wrong. On that basis, do you actually believe, had the tsunami not struck, that Fukushima would have been decommissioned?
carnegie wave energy
asx.com.au code CWE
In order of preference for me of the electric power supplies currently available for human use 1) Geothermal, 2) land based Hydropower, 3) sea based hydropower, 4) Nuclear Fission, 5) Wind, 6) Solar PV. Natural Gas is our best fossil choice and Coal our last resort to get the electricity we need to keep our civilization going while we transition. Unfortunately Solar PV is prohibitively expensive, Wind is intermittent in most locations and rather pricey as well. All of the rest of my preferred choices have multiple groups objecting to their use.
Japan's prime minister ordered workers to remain at the tsunami-crippled Fukushima nuclear plant last March as fears mounted of a "devil's chain reaction" that would force tens of millions of people to flee Tokyo, a new investigative report shows...
Yukio Edano, then Japan's top government spokesman, told the panel that at the height of tension he feared a "devil's chain reaction" in which the Fukushima Daiichi plant and the nearby Fukushima Daini facility, as well as the Tokai nuclear plant, spiraled out of control, putting the capital at risk.
WASHINGTON — The operators of 20 of the nation’s aging nuclear reactors, including some whose licenses expire soon, have not saved nearly enough money for prompt and proper dismantling. If it turns out that they must close, the owners intend to let them sit like industrial relics for 20 to 60 years or even longer while interest accrues in the reactors’ retirement accounts.
Of the 20 reactors that lack the money for swift deconstruction, the owners hope that license renewals from the Nuclear Regulatory Commission will make the problem go away.
the mothball strategy carries risks that could outweigh benefits. Proponents say “it’s like magic — compound interest on the one hand and radioactive decay on the other,” he said. (Because radioactivity levels decline over time, deconstruction workers would ultimately be exposed to less contamination.) But future investment returns could prove bleak, Mr. Biewald warns, and anticipated deconstruction costs could easily rise.
Japan should aspire to phase out nuclear power completely, its energy minister said on Friday, even as the government struggles to persuade a wary public that it is safe to restart reactors after the world's worst nuclear crisis in 25 years.
Hundreds of Japanese demonstrators have been marching to celebrate the last of the country's 54 nuclear reactors being switched off.
The crowd gathered at a Tokyo park on Saturday said that they were not concerned about government warnings that the reactor shutdowns will lead to electricity shortages.
One of three reactors at the Tomari nuclear plant, on the northern island of Hokkaido, has gone offline for routine maintenance checks, meaning that for the first time in decades there is not a single active nuclear reactor in the country.
Like cesium from all 800 nuclear bombs ever dropped on Earth, except all at once
Alarmed by the precarious nature of spent fuel storage during his recent tour of the Fukushima Daiichi site, Sen. Ron Wyden, D-Oregon, subsequently fired off letters to Secretary of State Hillary Clinton, Secretary of Energy Steven Chu, NRC Chairman Gregory Jaczko and Japanese ambassador to the U.S. Ichiro Fujisaki. He implored all parties to work together and with the international community to address this situation as swiftly as possible.
A press release issued after his visit said that Wyden, a senior member of the U.S. Senate Committee on Energy and Natural Resources who is highly experienced with nuclear waste storage issues, believes the situation is "worse than reported," with "spent fuel rods currently being stored in unsound structures immediately adjacent to the ocean." The press release also noted the structures' high susceptibility to earthquakes and that "the only protection from a future tsunami, Wyden observed, is a small, makeshift sea wall erected out of bags of rock."...
An even more catastrophic worst-case scenario follows that a fire in the pool at unit 4 could then spread, igniting the irradiated fuel throughout the nuclear site and releasing an amount of cesium-137 equaling a doomsday-like load, roughly 85 times more than the release at Chernobyl.
It's a scenario that would literally threaten Japan's annihilation and civilization at large, with widespread worldwide environmental radioactive contamination...
The government does a poor job of estimating what it will cost to tear down a nuclear reactor, Congressional auditors say, and it may not be overseeing plant owners well enough to assure that they set aside enough money to do the job.
For a study it plans to issue on Monday, the Government Accountability Office scrutinized 12 of the nation’s 104 power reactors and found that for 5 of them, the decommissioning cost calculated by the Nuclear Regulatory Commission was 76 percent or less of what the reactor’s owner thought would be needed.
Tomari shutdown leaves Japan without nuclear powerJapan is switching off its last working nuclear reactor, as part of the safety drive since the March 2011 tsunami triggered a meltdown at the Fukushima plant. The third reactor at the Tomari plant, in Hokkaido prefecture, is shutting down for routine maintenance. It leaves Japan without energy from atomic power for the first time for more than 40 years. Until last year, Japan got 30% of its power from nuclear energy.
Hundreds of people marched through Tokyo, waving banners to celebrate what they hope will be the end of nuclear power in Japan. Since the Fukushima disaster, all the country's reactors have been shut down for routine maintenance. They must withstand tests against earthquakes and tsunamis, and local authorities must give their consent in order for plants to restart. So far, none have.
Ministers have warned Japan faces a summer of power shortages. Businesses have warned of severe consequences for manufacturing if no nuclear plants are allowed to re-start. In the meantime, Japan has increased its fossil fuel imports, with electricity companies pressing old power plants into service. If the country can get through the steamy summer without blackouts, calls to make the nuclear shutdown permanent will get louder, our correspondent says.
A 20km (12m) exclusion zone remains in place around the plant.
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