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Tenn. Valley Authority Responds to NRC Report on Japan Nuke Disaster

Tenn. Valley Authority Responds to NRC Report on Japan Nuke Disaster | Nuclear News | What The Physics? | Scoop.it
A Tennessee Valley Authority spokesman said the utility started making safety changes before a Nuclear Regulatory Commission panel released its report on Japan’s nuclear disaster.

The NRC panel has recommended that all nuclear plants re-evaluate their earthquake and flood risk, add equipment to deal with simultaneous damage to multiple reactors and make sure electrical power and instruments are in place to monitor and cool spent fuel pools after a disaster.

TVA spokesman Ray Golden said in a statement that so far since the March 11 earthquake and tsunami that cut off all electrical power to the plant in Japan, TVA has purchased additional satellite phones, gasoline-powered generators and diesel-powered fire pumps.

The NRC task force said there is no imminent risk from nuclear power plants in the United States

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Japan nuclear crisis and tsunami - Tuesday 15 March part one | World news | guardian.co.uk

Japan nuclear crisis and tsunami - Tuesday 15 March part one | World news | guardian.co.uk | Nuclear News | What The Physics? | Scoop.it

Another explosion at the Fukushima nuclear plant in Japan Photograph: Abc Tv/EPA
Live coverage continues here.







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NRC chairman proposes timetable for nuclear industry reforms

NRC chairman proposes timetable for nuclear industry reforms | Nuclear News | What The Physics? | Scoop.it
Washington (CNN) -- The chairman of the Nuclear Regulatory Commission said Monday the NRC should move quickly on post-Fukushima reforms, saying the commission should draw up proposed changes within 90 days, and the industry should implement them within five years.
NRC Chairman Gregory Jaczko reiterated his belief nuclear power plants in the U.S. are safe and that a Fukushima-type event is unlikely -- a reference to the the triple meltdown at Japan's Fukushima Daiichi power plant after an earthquake and tsunami in March.

Last week, an NRC task force completed its 90-day "quick look" at Fukushima, and made 12 recommendations, some of them sweeping in nature. Perhaps most significant, it calls on the NRC to replace a "patchwork" of regulations developed over the years with "a logical, systematic, and coherent" regulatory framework.

It also recommends the commission require power plants to upgrade protections to nuclear reactors and spent-fuel pools to further protect them from earthquakes, floods and fires.
The task force also said the NRC should require nuclear power plants to be better prepared to handle power blackouts and events that affect more than one reactor.

"In light of the task force's work, I see no reason why the commission cannot provide clear direction on each of their recommendations in less than 90 days," Jaczko said. "That is the time the commission gave the task force to do its job, and I believe that is more than enough time for the commission to outline a clear path forward."

Both the NRC and the nuclear industry, he said, should "commit to complete and implement the process of learning and applying the lessons of the Fukushima accident within five years -- by 2016.".


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Why was Japan so unprepared for the Fukushima nuclear accident?

Why was Japan so unprepared for the Fukushima nuclear accident? | Nuclear News | What The Physics? | Scoop.it
Many models have been created that have shown the correlation between the probability of an accident, with the state of preparedness in that area. In other words, the more likely an event, the more informed and prepared those in the effected area will be.

In this investigation I will use the probability of the occurrence of two events according to the AND logical gate, to demonstrate one way that the earthquake and tsunami on March 11th was likely underestimated in Japan. The two events may have been considered ‘independent events’ which would have caused their estimated probability of occurrence to be substantially less than a ‘common mode failure’ event.

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reactor safety pros's comment, July 18, 2011 9:22 PM
You are absolutely correct. The probabalistic risk assessment models are wrong. Further, Japan did not consider the full license duration of 40 years in their analyses for initial license application. They only considered 30 years. That additional 10 years made a huge difference in their acceptable model.
Enformable's comment, July 19, 2011 10:04 AM
And they still try to extend the licensing. Thanks for sharing rsp!
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Japan bank lobby:Tepco would face insolvency without bailout scheme

Japan bank lobby:Tepco would face insolvency without bailout scheme | Nuclear News | What The Physics? | Scoop.it
(Reuters) - The head of Japan's banking lobby said on Thursday that Tokyo Electric could become insolvent if parliament fails to pass a bailout bill by the end of September, when the operator of the crippled Fukushima nuclear plant closes books for the fiscal first half.

Katsunori Nagayasu, chairman of the Japanese Bankers Association, told a regular news conference time is running out as the government panel on nuclear damages compensation is set to release guidelines around late July.

"It will be known how much the compensation will be in rough figures, but if there is no (government) scheme for that then, Tokyo Electric could immediately become insolvent," he said.
"And it will trigger a series of risks for the power industry and the markets and put a damper on Japan's reconstruction efforts," he said.

Japan's parliament has started deliberations on a bill to set up a fund to help the operator of crippled nuclear reactors in Fukushima pay for damages, which could total billions of dollars.
Japanese banks, including Nagayasu's Mitsubishi UFJ Financial Group , provided a total 2 trillion yen in March in emergency loans to Tokyo Electric.

The creditors has been pushing for strong government commitment to keeping Tokyo Electric solvent and listed on the stock exchange, fearing a massive shock to the equity and bond markets in case of its default.

Nagayasu also said the direct impact from U.S. and European debt problems is relatively limited on the Japanese economy. But the European sovereign issue has various indirect ramifications, including a higher yen.

"A continued rise in yen would deal a great blow to the Japanese economy," he said.

(Reporting by Taiga Uranaka; Editing by Chris Gallagher)

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#Radioactive Hay Spreads to Niigata Prefecture | EX-SKF

#Radioactive Hay Spreads to Niigata Prefecture | EX-SKF | Nuclear News | What The Physics? | Scoop.it
Two cattle farmers in Nagaoka City in Niigata Prefecture bought rice hay for their cows from a seller in Miyagi Prefecture and fed their cows. 24 cows were later sold in Niigata and Tokyo. Now the rice hay has been found to contain 10,500 to 20,600 becquerels/kg of radioactive cesium.



Many Japanese thought Niigata was relatively safe from radioactive fallout from Fukushima I Nuclear Power Plant. Unfortunately there are more than one way to get the fallout, and buying rice hay from Miyagi (not even Fukushima) was one of them.

From Jiji Tsushin (7/18/2011):
新潟県は18日、同県長岡市の畜産農家2戸が保管していた宮城県産稲わらから、国の暫定規制値(1キロ当たり300ベクレル)を超える1万500~2万 600ベクレルの放射性セシウムを検出したと発表した。乾燥する前の水分を含んだ状態に換算すると、規制値の8~15倍に相当する。うち1戸の農家からは 新潟県内と東京都のと畜場に肉牛計24頭が出荷されたことも分かった。これらの農家はいずれも宮城県内の業者から稲わらを購入したという。

Niigata Prefecture announced on July 18 that 10,500 to 20,600 becquerels/kg of radioactive cesium was detected from the rice hay at two cattle farms in Nagaoka City in Niigata. The rice hay was harvested in Miyagi Prefecture. The provisional safety limit for cattle feed is 300 becquerels/kg for cesium. If the rice hay is reconstituted with water, the above numbers are 8 to 15 times the limit of the provisional safety limit. It has been revealed that one of the two farms shipped 24 meat cows in Niigata and Tokyo. Both farms purchased the rice hay from a dealer in Miyagi Prefecture.

 新潟県は2戸に対し、この稲わらを与えた牛の出荷や移動の自粛を要請するとともに、流通状況の調査を開始した。県内で宮城県産の稲わらを使用している他の農家が保管する稲わらを対象に、セシウム検査も実施する。 

Niigata Prefecture has requested the two cattle farms not to ship or move the cows that have been fed with the contaminated rice hay, and started to trace the movement of the cows already shipped. The prefectural government will also test for cesium in the rice hay at other cattle farms in the prefecture who use the rice hay from Miyagi Prefecture.

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Japanese Utilities and Regulators Dismiss Tragic Nuclear History, Unsafe Procedures, Radiation Releases, as Talks of Japan's Nuclear Future Come Into Contention

Japanese Utilities and Regulators Dismiss Tragic Nuclear History, Unsafe Procedures, Radiation Releases, as Talks of Japan's Nuclear Future Come Into Contention | Nuclear News | What The Physics? | Scoop.it
Is Japan's nuclear power industry too reliant on people who really don't know what they are doing and too caught up with preventing the public from remembering it's controversial history?

On March 11th, 2011 the first nuclear emergency was declared in Japan after the disaster at the Fukushima Nuclear Power Plant. The recent series of events at Japanese nuclear power stations are by no means isolated incidents, and the questions raised about safety and regulation are not new either.

Japan imported its first commercial nuclear power plant from the UK in 1966, and completed its first indigenous reactors in 1970. While some herald Japan for its "good reputation" for public safety, the nuclear industry in Japan has also been a barometer of disgrace for the Japanese nation.

The core issues about Japan's nuclear program still remain more than 40 years after inception. Throughout the decades, nuclear accidents have had little impact on government policy, while disasters in the island country continue increasing in size and danger to public health.

While on one hand loudly declaring as long as the proper safeguards are in place nuclear power is safe, clean, and exceptionally powerful, utilities and regulators have knowingly shirked the responsibility to follow through, even to carry out routine safety checks.

If Japanese citizens are only now realizing the re-emerging patterns of denial, cover-up and bureaucratic collusion between the industry and the government, it should only reaffirm the public understanding of Japan's dangerous nuclear program.
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