ラベル reactors の投稿を表示しています。 すべての投稿を表示
ラベル reactors の投稿を表示しています。 すべての投稿を表示

2011年10月1日土曜日

Can Japan's Anti-Nuclear Protesters Keep the Reactors Shut Down? (Time.com)

For months after a devastating earthquake and tsunami crippled Japan's Fukushima power plant, sparking fears of a possible nuclear meltdown, the country's anti-nuclear groups struggled to be heard. A few small rallies were held, but they failed to generate much media coverage. As debates raged from Germany to China about the safety of nuclear reactors, commentary in Japan, of all places, was strangely absent. Protests are just that unusual in this conservative country.

But this is starting to change. As Fukushima continues to spew more radioactivity into the air and trust in the government and Tokyo Electric Power Co. plunges, the mood in Japan is slowly shifting away from nuclear power. On Sept. 19, the mounting anger and fear culminated in a rally of some 60,000 anti-nuclear protesters in Tokyo - the largest such gathering since the March 11 quake and tsunami. The protesters included the elderly, families with children and a large contingent from the towns near the reactor. A surprising number were local government officials and members of RENGO, the 6.8-million-strong federation of labor unions. "Normally RENGO never goes against nuclear power because many members are nuclear industry employees," says Satoshi Kamata, a journalist and atomic energy opponent who organized the rally. "I'm guessing about 10,000 to 15,000 RENGO members were at the rally."(See photos of the tsunami hitting the Fukushima plant.)

Kamata also made sure there was a celebrity factor, inviting Nobel Prize-winning author Kenzaburo Oe, composer Ryuichi Sakamoto and other high-profile figures to participate to try to attract more media attention. The outpouring of support shows just how angry and frustrated people are, he says. "They don't want to feel powerless anymore. They want to make a change," he says. "This rally was a totally new phenomenon. It's not just an anti-nuclear energy movement, but the beginning of a large-scale protest by ordinary people, a historic people's movement."

Fueling the fear was former Prime Minster Naoto Kan's Sept. 6 revelation of a worst-case scenario government report he received just after the Fukushima crisis began stating that a massive evacuation of Tokyo's 30 million residents could have been necessary. The plant sits just 130 miles northeast of Tokyo. "It was a crucial moment when I wasn't sure whether Japan could continue to function as a state," he said in an interview with the Tokyo Shimbun, a daily newspaper. "When I think of safety not being outweighed by risk, the answer is not to rely on nuclear."

At the beginning of the year, Japan had 54 nuclear reactors providing about 29% of the country's energy needs. An additional 14 plants were in the pipeline, with the hopes that nuclear power would meet over half of the country's energy demands by 2030. After the Fukushima crisis, however, Kan began pushing hydroelectric, wind and solar power, endorsing a plan to increase alternative energy production from the current 9% to 20% by 2020. His last mandate before resigning in August was to push through Parliament a new law promoting renewable energy. (Read about how to stop a nuclear reactor meltdown.)

But just as the anti-nuclear movement is gaining traction and support for renewable energy is on the rise, the new prime minister is signaling his intention to get Japan's reactors up and running again. At a high-level meeting on nuclear safety and security during last week's U.N. General Assembly, Yoshihiko Noda spoke of the country's continuing need for nuclear energy. "We will raise the safety of nuclear plants to the highest level," he said. Then, in an interview with The Wall Street Journal on Sept. 21, he talked about restarting the country's idle reactors in the spring. "If we have a power shortage, it will drag down Japan's overall economy," he said. Nuclear energy critics argue, however, that Japan would be just fine next year because the country managed with fewer than a third of its reactors operating this summer. When asked about this by The Wall Street Journal, Noda replied: "That's absolutely impossible."

A showdown between politicians and concerned citizens may be in the making. On Monday, the city of Makinohara in Shizuoka Prefecture drew widespread attention after it passed a resolution to permanently shut down the nearby Hamaoka nuclear power plant. A similar resolution had already been adopted by the three other municipalities in the prefecture and six major companies, including Suzuki, have said they may leave the area because of concerns over the plant. Hamaoka's three reactors went offline as part of a government safety mandate following the Fukushima accident. But despite the fact seismologists have described the ageing plant as among the most dangerous in the world because of its position on top of two major fault lines, operator Chubu Electric Power Co. has announced plans to restart it. It's now building a 60-foot-tall levee to protect the plant from a possible tsunami.

Some activists are now pushing for a national referendum on nuclear power. In a Sept. 21 poll conducted by the Mainichi Shimbun, a major newspaper, nearly two-thirds of respondents indicated they wanted a vote on whether the country should continue to rely so heavily on nuclear power. In his speech at the anti-nuclear rally earlier this month, Kenzaburo Oe pointed to a referendum Italy held in June in which the country voted down the prospect of building new reactors. The Japanese people, too, should be given the right to vote, he said. "What is now clear is this: in Italy, human life will not be threatened by nuclear energy anymore. We Japanese, however, must continue to live under the fear of nuclear disaster."

Read why Japan's nuclear crisis has Germany worried.

Read about whether the Fukushima crisis is bringing China and Japan together.

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2011年9月14日水曜日

Japan reactors to restart when safety assured: trade minister (Reuters)

TOKYO (Reuters) – Japan's new trade minister said he expects nuclear reactors idled for routine maintenance to restart once safety is confirmed and local communities give their approval, reflecting Prime Minister Yoshihiko Noda's view that nuclear power will play a continued role in the country's energy mix.

Yukio Edano made no further comment on the likely timing for reactor restarts, which have been delayed by public concerns about nuclear safety in the aftermath of the Fukushima Daiichi radiation crisis, threatening power shortages as more reactors go offline for inspections and maintenance.

Edano also told a news conference on Tuesday that safety checks should be done thoroughly and in a way that is easy for local residents to understand.

Edano served as chief cabinet secretary under previous Prime Minister Naoto Kan, who had taken a hard line toward nuclear power and called for more ambitious efforts to boost renewable energy.

The March 11 earthquake and tsunami, which triggered the Fukushima crisis, spurred the government to require utilities to carry out two-stage stress tests to gauge the resilience of nuclear plants to a massive earthquake or other unforeseen events.

"I think one purpose of conducting the stress tests is to make checks transparent and specific, and to explain the results in a way that's easy to understand," Edano said.

He said there was no room for politics in determining the safety of nuclear reactors, but he implied there should be flexibility in determining whether local residents have given consent to reactor restarts, calling for "comprehensive judgments."

Edano said he wanted to avoid mandatory reductions of power use in the winter, and hoped to achieve this by encouraging households and offices to conserve power.

At his inaugural news conference as trade minister late on Monday, Edano said Japan should strive to become a society that does not depend on nuclear power, although he stopped short of calling for an eventual closure of all nuclear power plants.

On the U.S.-led talks on the proposed Transpacific Partnership pact (TPP), Edano said while there was a global push for progress on the pact, Japan must first reach a consensus among interested domestic parties before determining whether to join talks.

Edano replaced Yoshio Hachiro, who resigned after only eight days as trade minister following gaffes related to the Fukushima plant. The trade minister also oversees energy policy.

(Reporting by Risa Maeda and Chikako Mogi; Editing by Edmund Klamann)


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It's Official: Fukushima Reactors 'Essentially Stable' (The Atlantic Wire)

September 11th not only marked the 10th anniversary of a devastating day for our country, but also the 6 month mark of the earthquake that hit Japan last March. The country has made a lot of progress in that half year. The nuclear reactors, which had a meltdown following the shake, are "essentially stable," according to the International Atomic Energy Agency, reports Reuters. "The situation at the site remained very serious for many months. The agency's assessment now is that the reactors are essentially stable," IAEA director Yukiya Amano said. The plant plans on using a cold-shutdown method to bring the fuel rod temperatures down.

Related: After Fukushima: Fossil Fuel Picks Up Slack in Japan

The development comes as the rest of the country has made significant progress. Today's In Focus gallery at The Atlantic details the clean-up with 12 before and after photos. While the change is inspiring, the photos show the extent of the damage, some of which will take longer to amend. 


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Fukushima reactors now "stable," IAEA says (Reuters)

VIENNA (Reuters) – The reactors at Japan's crippled Fukushima atomic power plant are now "essentially stable," the U.N. nuclear chief said on Monday, six months after the world's worst nuclear disaster in a quarter of a century.

Yukiya Amano, director general of the International Atomic Energy Agency (IAEA), said the expectation was that a "cold shutdown" of all reactors would be achieved as planned.

"The plant operator and the Japanese authorities have been working hard to regain full control of the situation and have made steady progress in the past six months," he told the 35-nation governing board of the Vienna-based U.N. agency.

"The situation at the site remained very serious for many months. The agency's assessment now is that the reactors are essentially stable," he added.

Fuel rods in three reactors at the Japanese complex started melting down when power and cooling functions failed after it was hit by an earthquake and a huge tsunami, causing radiation leakage and forcing the evacuation of 80,000 people.

It was the world's worst nuclear accident since Chernobyl in 1986.

Last week, Tokyo Electric Power (Tepco) edged another step closer to its near-term goal of bringing the reactors at its Fukushima Daiichi plant to a state of cold shutdown by January, as the temperature at the second of three damaged units fell below boiling point.

Cold shutdown is when water used to cool nuclear fuel rods remains below 100 degrees Celsius, preventing the fuel from reheating.

(Reporting by Fredrik Dahl)


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2011年8月21日日曜日

Australian teachers in Japan may be placed too close to leaky nuclear reactors - NEWS.com.au

Children from Fukushima, where a tsunami-stricken plant triggered a nuclear crisis, travel to Tokyo to pressure the government to protect them from radiation. Simon Hanna reports.

quake10 The reactors in Japan's northern Fukushima area were damaged by a massive tsunami, which triggered the worst nuclear disaster since Chernobyl / AP Source: AP

A LEADING Japanese recruiter of teachers from Australia is placing recruits closer to leaky nuclear reactors than recommended by Canberra's radiation safety agency.

The move by the Japanese Government-sponsored JET program reflects the gulf between what Japanese and other nations' authorities constitute a safe distance from nuclear reactors.

The reactors in Japan's northern Fukushima area were in March damaged by a massive tsunami, which triggered the worst nuclear disaster since Chernobyl.

JET is mostly known for recruiting native English-speaking teachers for Japanese schools. It maintains no teacher will be placed in an area the Japanese Government deems "unsafe".

Teachers will be placed no closer than 30km to the disaster-struck nuclear reactors at Fukushima, in line with Japanese safety guidelines. No teachers will be placed in areas "under watch for possible evacuation", JET says in an explanation document.

The program confirmed to The Courier-Mail that 31 new JET participants from English-speaking nations were offered placements within 80km of the nuclear plants. Three who took up the offer were Australians, JET said.

The Australian Radiation Protection and Nuclear Safety Agency recommends Australians keep at least 80km away from the reactors.

"As a precautionary measure ... Australians within an 80km zone from the Fukushima nuclear power plant (are recommended to) move out of the area," an advisory guide says.

"The US had made a similar recommendation in accordance with the standard guidelines of their Nuclear Regulatory Commission."

JET's explanation document details that it might place participants closer to reactors than advised by foreign governments.

Asked about people who refuse to go within the 80km zone, Hisashi Ueno of Japan's Ministry of Foreign Affairs said participants, placed inside a boundary recommended by their own governments, could re-apply for the program next year.

If a participant's government would not allow them to go into restricted zones, they could become substitutes to replace any departing JET participants in other locations, he said.


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