Japan to probe 'active faults' under nuclear plants

AFP reports that Japan is rather belatedly trying to work out if its nuclear plants are built on fault lines - Japan to probe 'active faults' under nuclear plants.

Japan's nuclear safety watchdog on Wednesday ordered a probe into claims the country's only working nuclear power station sits on an active tectonic fault.

The order came as Kansai Electric Power Company (KEPCO) readied to refire a second reactor at the Oi plant, western Japan, just weeks after the first unit was restarted, ending a brief nuclear-free period in earthquake-prone Japan.

A spokesman for the Nuclear and Industrial Safety Agency said KEPCO had to re-examine the Earth's crust underneath Oi, while the operator of the Shika plant in nearby Ishikawa also had to carry out further studies.

The decision came after geological experts argued both plants are likely sitting on active faults and could be vulnerable to earthquakes if tectonic plates shift.

Japan's entire stable of nuclear reactors was shut down in the months after the disaster at Fukushima when an earthquake-sparked tsunami knocked out cooling systems causing meltdowns that spread radiation over a large area.

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Japan’s Former Leader Condemns Nuclear Power

The New York Times reports that Japan's Prime Minister during the Fukushima disaster thinks the country should completely abandon nuclear power - Japan’s Former Leader Condemns Nuclear Power.

In an unusually stark warning, Japan’s prime minister during last year’s nuclear crisis told a parliamentary inquiry on Monday that the country should discard nuclear power as too dangerous, saying the Fukushima accident had pushed Japan to the brink of “national collapse.”

In testimony to a panel investigating the government’s handling of the nuclear disaster, the former prime minister, Naoto Kan, also warned that the politically powerful nuclear industry was trying to push Japan back toward nuclear power despite “showing no remorse” for the accident. ...

In his testimony, Mr. Kan said that Japan’s plant safety was inadequate because energy policy had been hijacked by the “nuclear village” — a term for the power companies and pronuclear regulators and researchers that worked closely together to promote the industry. He said the only way to break their grip was to form a new regulatory agency staffed with true outsiders, like American and European experts.

“Gorbachev said in his memoirs that the Chernobyl accident exposed the sicknesses of the Soviet system,” Mr. Kan said, referring to the 1986 explosion of a reactor in Ukraine, which spewed radiation across a wide swath of Europe. “The Fukushima accident did the same for Japan.” ...

He complained that nuclear regulators and the plant’s operator, Tokyo Electric Power, or Tepco, kept him in the dark about crucial details in the days immediately after a huge earthquake and tsunami on March 11, 2011, knocked out cooling systems at the Fukushima Daiichi plant, causing three of the plant’s reactors to melt down.

He said he tried to be fully open with the public and hid nothing. But he seemed to undermine that claim when he disclosed that in the early days of the crisis he feared it could spiral out of control, even as his own ministers were giving public reassurances that they had the plant under control.

He said he feared additional meltdowns could “release into the air and sea many times, no, many dozens of times, many hundreds of times the radiation released by Chernobyl.”

Those fears led to the most extraordinary moment of the crisis, when Mr. Kan walked into Tepco’s headquarters after being told the company wanted to evacuate its staff from the crippled plant. He demanded that they stay, saying he was prepared to put his own life on the line to prevent the disaster from worsening.

He also defended his visit to the plant on the day after the earthquake, which has been widely criticized for distracting plant personnel at a crucial juncture in their efforts to save the overheating reactors. Mr. Kan told the panel that he wanted to get an assessment directly from the plant manager because he felt Tepco officials in Tokyo were not giving him enough information.

But his strongest comments came at the end of his testimony, when a panel member asked if he had any advice for the current prime minister. Mr. Kan replied that the accident had brought Japan to the brink of evacuating metropolitan Tokyo and its 30 million residents, and that the loss of the capital would have paralyzed the national government, leading to “a collapse of the nation’s ability to function.”

He said the prospect of losing Tokyo made him realize that nuclear power was just too risky, that the consequences of an accident too large for Japan to accept.

“It is impossible to ensure safety sufficiently to prevent the risk of a national collapse,” Mr. Kan said. “Experiencing the accident convinced me that the best way to make nuclear plants safe is not to rely on them, but rather to get rid of them.”

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Japanese firms considering geothermal plants in Fukushima

Reuters has a report on interest in developing geothermal power stations in the Fukushima area - Japanese firms considering geothermal plants in Fukushima.

Japanese firms are looking at building several geothermal plants in a volcanic zone in the area worst hit by last year's nuclear disaster, a project that could gain momentum after the government eased restrictions on drilling this week.

The head of a group of firms that have studied the potential of a geothermal project in Fukushima said on Friday a consortium of about 10 companies would meet local people by early May to explain their plans to build plants with a total capacity of 270 megawatts, which would be Japan's biggest.

The consortium plans to work with local communities, including those who run hotels and inns at hot springs, to develop geothermal energy, Masaho Adachi, the chairman of Japan Geothermal Developers' Council said.

The council has already held a meeting with local government officials in the central zone of Fukushima, home to the nuclear plant crippled by an earthquake and tsumani last year, he said.

Along with high costs, protests by local communities fearful of the impact of a geothermal plant on hot springs have prevented such projects from taking off in the past.

"We should spend together a period of more than 10 years before having geothermal plants running," he said in an interview with Reuters on Friday, referring to activities such as collecting data, test drilling and environment assessment. Adachi declined to name the companies forming the consortium.

The Nikkei newspaper earlier said that the Fukushima project by a consortium of companies including Idemitsu Kosan Co and Inpex Corp would cost around 100 billion yen ($1.2 billion), with operations set to start in 2020.

Since the crisis, interest in renewable energy has jumped and a government subsidy scheme, similar to those in many countries in Europe, to force utilities to buy renewable electricity is due to start in July. ...

Studies show Japan, a land of volcanoes, ranks as the world's third-richest nation in geothermal power. A government study last year showed it has the potential for business to derive 14,000 MW of energy, but it currently has only 540 MW worth of commercial plants due to restrictions on development in national parks, where most resources lie.

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Japan northeast could tap 740MW of geothermal power

The Climate Spectator has a brief report on the Fukushima disaster driven resurgence of interest in geothermal power in Japan - Japan northeast could tap 740MW of geothermal power.

Japan's northeast Tohoku region could develop 740 megawatts of new geothermal power supplies, the Japan Geothermal Developers' Council estimated on Thursday.

The Tohoku region has been trying to rebuild following a magnitude 9.0 earthquake and tsunami on March 11, with some local governments showing willingness to invest in renewable energy following the disaster at the Fukushima Daiichi nuclear plant.
Studies show Japan, a land of volcanoes, ranks as the world's third richest nation in geothermal power, with the potential to derive 23,400 MW of energy.

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