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Dr. Timothy Mousseau, Professor of Biological Sciences, University of South Carolina. Mousseau discussed his many studies on the health impacts on wildlife and biota around Chernobyl and Fukushima which soundly debunk the notion that animals there are “thriving.”
Japanese steel in French nuclear facilities found to have high impurity level
The concentration of impurity in steel a Japanese manufacturer supplied to nuclear facilities in France exceeded the standards set by the European country, Japan’s nuclear watchdog said Wednesday, meaning the steel could be weaker than expected.
Briefed recently by French regulators about the finding, the Nuclear Regulation Authority is looking into allegations regarding the products provided by the Kitakyushu-based firm under scrutiny, Japan Casting & Forging Corp.
The NRA said it needs to carry out tests to evaluate whether the steel is in fact lacking in strength.
The French regulators said in June they found steel containing larger-than-expected amounts of impure substances in facilities such as reactor pressure vessels at 18 reactors operating in France and are investigating the matter. The steel products in question were made by Japan Casting & Forging and Creusot Forge, a subsidiary of France’s Areva SA.
In August, the NRA ordered local utilities hosting nuclear power plants in Japan to examine reactors and other major parts at the plants. The utilities have been asked to report the results to the NRA by the end of October.
Japan Casting & Forging is also under scrutiny in Japan as it is responsible for the construction of reactor pressure vessels in 13 Japanese nuclear reactors including the Sendai Nos. 1 and 2 reactors operated by Kyushu Electric Power Co. in Kagoshima Prefecture.
Currently, the two Sendai reactors are operating in Japan after passing stricter safety checks in the wake of the 2011 nuclear crisis that crippled the Fukushima No. 1 nuclear power plant in Fukushima Prefecture.
Japan Casting & Forging had said earlier it has removed the impurities from its steel as instructed by its clients.
The NRA said the standard for carbon content in metals — a gauge of impurity — is below 0.22 percent in France, while the figure in Japan is below 0.25 percent.
But in some products provided by the Japanese firm in some nuclear facilities, carbon content in steel was over 0.3 percent.
JCFC steel in troubled French reactor also used in 13 Japanese nuclear power plants
Thirteen Japanese nuclear reactors were constructed with steel made by the same domestic company that produced material used in a French power plant that has come under scrutiny after anomalies were found in the structure of its reactor vessel.
Six utilities used steel from Japan Casting & Forging Corp. (JCFC), they all said in separate statements Friday. The company was identified by Japanese authorities last month as having supplied steel to the Flamanville nuclear plant, developed by Electricite de France SA and Areva SA, where the French safety authority last year found weaker-than-expected steel.
The Nuclear Regulation Authority asked utilities last month to examine reactor parts made by the same companies that supplied the Flamanville facility. Utilities must now evaluate whether their reactor pressure vessels meet national standards and report the results to the regulator by Oct. 31.
“It’s just to be sure,” said an NRA official.
JCFC said it has thrown away steel parts that lead to weaker products, adding that its steels have cleared the safety criteria.
The Japanese facilities affected include Kyushu Electric Power Co.’s Sendai No. 1 and 2 reactors in Kagoshima Prefecture, the company said Friday. The plant was restarted last year and is facing opposition from a new governor who has demanded they be temporarily shut for inspections.
Reactors now in operation don’t need to be shut down, Yoko Kobayashi, an official with the NRA’s planning division, said Friday. The affected utilities are now required to submit manufacturing reports and past evaluation results, she said.
The steel scrutiny is the latest hurdle for the nuclear power industry since the 2011 Fukushima disaster and could hamper the government’s goal of having it account for as much as 22 percent of its energy mix by 2030.
Local court challenges have threatened reactor operations, and even those restarted under new post-Fukushima safety rules have faced a rocky road. Only three of the nation’s 42 operable reactors are online.
Parts made by JCFC met rigorous standards requested by the utilities, and the company will provide support going forward, JCFC official Seigo Otsubo said Friday.
EDF and Areva are conducting additional tests to determine whether the anomalies present a safety issue. The two companies said in April that the submission of their report to French regulators about the Flamanville reactor has been delayed until year-end.
EDF has also determined that steam generator channel heads at 18 French reactors contain anomalies similar to those at Flamanville, Autorite de Surete Nucleaire, the safety regulator, said in June.
According to statements from the utilities, the domestic reactors made with steel from JCFC include: units 2 and 4 at the Fukushima No. 2 power plant run by Tokyo Electric Power Co. Holdings Inc.; unit 2 at the Takahama power plant and units 1 and 2 at the Oi power plant, both run by Kansai Electric Power Co.; reactors 2, 3 and 4 at the Genkai plant and reactors 1 and 2 at the Sendai plant run by Kyushu Electric Power Co.; reactor 2 at the Ikata plant run by Shikoku Electric Power Co.; reactor 1 at the Shika plant managed by Hokuriku Electric Power Co.; and reactor 2 at the aging Tsuruga plant run by the Japan Atomic Energy Agency.
Steel in Troubled French Nuclear Reactor Used in 13 Japanese Reactors
Thirteen Japanese nuclear reactors were constructed with steel from the same company used in a French power plant that’s under scrutiny for anomalies found in the reactor vessel’s structure.
Six utilities used steel from Japan Casting & Forging Corp., they all said in separate statements on Friday. The steelmaker was identified by Japanese authorities last month as supplying steel to the Flamanville nuclear plant, developed by Electricite de France SA and Areva SA, where the French safety authority last year found weaker-than-expected steel.
Japan’s nuclear regulators asked utilities last month to examine reactor parts manufactured by the same companies as the Flamanville facility. Utilities must now evaluate whether their reactor pressure vessels meet Japan’s standards and report the results to the Nuclear Regulation Authority by Oct. 31.
The Japanese facilities affected include Kyushu Electric Power Co.’s Sendai No. 1 and 2 reactors, the company said Friday. The plant was restarted last year and is facing opposition from the region’s new governor, who has demanded they be temporarily shut for inspections.
Reactors that are currently operating don’t need to be shut down, Yoko Kobayashi, an official with the NRA’s planning division, said Friday. The affected utilities are now required to submit manufacturing reports and past evaluation results, she said.
Nuclear Challenge
The steel scrutiny is latest hurdle for nuclear power in Japan and the government’s goal of having it account for as much as 22 percent of its energy mix by 2030 in the wake of the 2011 Fukushima disaster. Local court challenges have threatened reactor operations, and even those restarted under new post-Fukushima safety rules have faced a rocky road. Only three of the nation’s 42 operable reactors are online.
Parts manufactured by JCFC met rigorous standards requested by the utilities, and the company will provide support going forward, Seigo Otsubo, an official at the company, said Friday.
EDF and Areva are conducting additional tests to determine whether the anomalies are a safety issue. The two companies said in April that the submission of their report to French regulators about the Flamanville reactor has been delayed until year-end.
EDF has also determined that steam generator channel heads at 18 French reactors contain anomalies similar to those at Flamanville, Autorite de Surete Nucleaire, the safety regulator, said in June.
Japanese reactors that used steel from JCFC, according to statements from the companies:
- Tokyo Electric Power Co. Holdings Inc.’s Fukushima Dai-2 No. 2, No. 4
- Kansai Electric Power Co.’s Takahama No. 2, Oi No. 1 and No. 2
- Kyushu Electric Power Co.’s Genkai No. 2, No. 3, No. 4, Sendai No. 1, No. 2
- Shikoku Electric Power Co.’s Ikata No. 2
- Hokuriku Electric Power Co.’s Shika No. 1
- Japan Atomic Energy Agency’s Tsuruga No. 2
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