All of Japan’s Nuclear Reactors Could be Offline by Next Spring

A Geiger counter for measuring radiation sits on a map of the Fuksuhima area. Radiation levels in the areas surrounding the crippled reactor vary wildly from day to day and place to place. On March 18, Japan’s science ministry measured radiation at 18 locations in areas 30 to 60 kilometers from the power plant. The lowest levels were about 0.5 microsieverts per hour. Assuming somebody was continuously exposed (i.e. outdoors) for 7 hours, they received a dose of about 3.5 microsieverts, just over one third of their normal daily dose of background radiation. A dental X-ray gives a dose of 5 microsieverts.

An attempt by Japan’s government to reassure a skeptical public by ordering stress tests on all nuclear reactors backfired on Thursday, casting doubt over the first restart of reactors since a massive quake and tsunami in March triggered a radiation crisis.

The announcement of tests provoked a furious response from the mayor of the southern town of Genkai, who had accepted earlier safety assurances, prompting him to call off a planned restart of two reactors at a local plant run by Kyushu Electric Power .

His stance adds to uncertainty whether other utilities will be able to bring reactors back on line quickly after shutting them for mandatory safety checks, which could have all of Japan’s reactors offline by next spring.

Failure to restart reactors raises the prospect of further power supply disruptions that would be a blow to Japanese industry, which is already staggering production schedules due to power shortages in several parts of the country.

The government has been reviewing its energy policy to reduce the nation’s reliance on nuclear energy but says restarting reactors is essential to meet peak energy demand, and hoped the tests would ease public mistrust of the nuclear industry.

The tests will use simulations to confirm how well each reactor could withstand a severe event such as the March earthquake and tsunami that battered northeast Japan and triggered a crisis at Tokyo Electric Power Co’s Fukushima plant.

Hirofumi Kawachi, senior analyst covering Japanese electric utilities at Mizuho Investors Securities, said it was unclear how long the stress tests would take, with details yet to be disclosed.

Setting an Example

EU stress tests that began on June 1 require each nuclear plant operator to submit a progress report on Aug. 15 and a final report on Oct. 31. These will become the basis for national reports to be subjected to peer review, which will be completed by April 2012.

The EU Commission is due to file a final report to the EU Council in June 2012.

“If (stress tests in Japan) take a year like in the EU, reactor restarts will be impossible this winter, let alone this summer,” Kawachi said. “Considering that more plants will continue shutting down until then, depending on temperatures, the impact on our lives in winter may be even greater.”

The prospects of prolonged shutdown, which would require electric utilities to depend more on costly fossil fuels for thermal power generation, drove down shares of Japanese power firms including Genkai plant operator Kyushu Electric Power Co , which fell 7.5 percent, and Kansai Electric Power Co , which was down 8.4 percent.

Safety fears after the March disaster knocked out cooling systems at the Fukushima Daiichi plant, 240 km (150 miles) north of Tokyo, triggering reactor meltdowns, have made local governments wary of agreeing to the restart of reactors shut for maintenance.

Only 19 out of Japan’s 54 reactors are now in operation and the trade and industry ministry, which manages the nuclear industry, is keen to get idled ones back on line to avoid power blackouts during the summer, when electricity demand peaks.

Wednesday’s sudden announcement that the government was planning stress tests for all nuclear facilities caught local authorities off-guard and came under fire in media as the latest policy flip-flop by unpopular Prime Minister Naoto Kan.

The mayor of Genkai, in Saga Prefecture, had given the green light for a restart that would have brought all four reactors at the 36-year-old plant on line, after assurances from the government that they were safe.
But the town has now reversed course.

“Prime Minister Kan made a statement suggesting that stress tests are necessary for reactor restarts,” said Genkai Mayor Hideo Kishimoto. “This made me feel my decision (consenting to a restart) was meaningless, and I feel furious about it.”

Yasushi Furukawa, governor of Saga Prefecture, also slammed Kan for lacking a consistent policy on restarting reactors. The consent of the governor, along with the mayors of Genkai and a neighboring town, is needed for the reactors to resume operation.

 
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About GREGinSD

A Generation X|Y'er that resides in beautiful San Diego, Ca.
This entry was posted in News and politics, Technology & Science, World / International Affairs and tagged , , , , , , , . Bookmark the permalink.

One Response to All of Japan’s Nuclear Reactors Could be Offline by Next Spring

  1. Pingback: 2021 start for deconstruction of crippled Japanese nuclear reactors | The Road Not Taken

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