Japan takes first step to a permanent reactor shutdown after Fukushima

TOKYO Wed May 15, 2013 5:09pm IST

An aerial view shows Japan Atomic Power Co.'s Tsuruga nuclear power plant in Tsuruga, Fukui prefecture, in this photo taken by Kyodo May 15, 2013. Experts judged on Wednesday that a reactor on Japan's west coast is located on ground at high risk of an earthquake, setting in motion a process that will likely lead to the first permanent shutdown of a nuclear plant since the 2011 Fukushima crisis. REUTERS/Kyodo

An aerial view shows Japan Atomic Power Co.'s Tsuruga nuclear power plant in Tsuruga, Fukui prefecture, in this photo taken by Kyodo May 15, 2013. Experts judged on Wednesday that a reactor on Japan's west coast is located on ground at high risk of an earthquake, setting in motion a process that will likely lead to the first permanent shutdown of a nuclear plant since the 2011 Fukushima crisis.

Credit: Reuters/Kyodo

Related Topics

TOKYO (Reuters) - Experts judged on Wednesday that a reactor on Japan's west coast is located on ground at high risk of an earthquake, setting in motion a process that will likely lead to the first permanent shutdown of a nuclear plant since the 2011 Fukushima crisis.

Mothballing the reactor at Japan's oldest nuclear station would be the most stringent measure adopted in Japan since the meltdowns at the Fukushima Daiichi nuclear station north of Tokyo exposed failings in nuclear oversight. The experts' finding is likely to send shockwaves through an industry that has long been used to a light touch from regulators.

"It is no longer business as usual. This is the beginning of a long-term restructuring of the nuclear power business in Japan," said a senior adviser on atomic policy, who requested anonymity because he is not authorised to comment on safety issues.

Japan's nuclear operators, which only have two out of 50 reactors running while they await safety checks from the country's new regulator, have been too optimistic about their chances for early restarts, according to the adviser.

GRAPHIC: Japan's reactor status link.reuters.com/qec28t

They are struggling under the weight of losses from having to import fossil fuels to make up for lost nuclear generation capacity, which has pushed the world's third-biggest economy into a record trade deficit.

A panel of seismologists advising the Nuclear Regulation Authority (NRA) issued their assessment that a fault known as D-1 under the Tsuruga nuclear plant is active. This paves the way for NRA to rule that the station is too risky to operate.

"Erring on the side of safety, we believe the D-1 faultline is active," the panel concluded in its report.

"Safety levels (at Tsuruga) have been low and it is really just a matter of luck that there hasn't been an accident," Kunihiko Shimazaki, the head of the panel and a commissioner of the NRA, said after the report was finalised. "We are taking the first steps to correct the situation."

REACTORS UNDER REVIEW

Reactors at five other nuclear stations are under review over the possibility they also sit on active faults.

Japan Atomic Power Co., which operates the two-reactor Tsuruga station, reacted angrily to the findings, which put the plant in breach of nuclear station siting guidelines set by the government. It accused the panel of bias.

"We deeply regret that they made such a conclusion this time and it is absolutely impossible for us to accept it," it said in a statement.

"We hereby ask the panel of experts to come to a fresh conclusion after reviewing existing data with a neutral and fair point of view, with discussion on a strictly scientific basis and clarification of the grounds of understanding."

While the NRA does not have legal authority to order a permanent shutdown, its chairman, Shunichi Tanaka, said in December the watchdog would not allow the Tsuruga No. 2 unit to restart, should the fault be found to be active.

The NRA was set up in September last year to replace a regulator that was widely criticized for being too close to the industry it was supposed to oversee.

The NRA's commission is expected to endorse the findings on Tsuruga as early as next Wednesday and decide what action to take when new regulations on reactors go into effect in July.

Those regulations would make the current guidance that nuclear stations cannot be built over active faultlines legally enforceable.

Japan is one of the world's most seismically active countries. An earthquake and tsunami in March 2011 caused three reactor meltdowns at the Fukushima plant, the worst nuclear disaster in 25 years.

Tsuruga's No. 2 unit has 1,160-megawatts of capacity and is adjacent to the 357 megawatt No. 1 unit, Japan's oldest reactor.

That reactor, also under review over a possible active faultline, may also have to be mothballed as it is more than 40 years old, the lifetime limit for operations under policy introduced since Fukushima. (Reporting by Risa Maeda; Writing by Aaron Sheldrick; Editing by Kevin Krolicki and Ron Popeski)

FILED UNDER:
Comments (0)
This discussion is now closed. We welcome comments on our articles for a limited period after their publication.

  • Most Popular
  • Most Shared

Fighting the Islamic State

Students take part in a demonstration as one of them holds pictures of Iran's Supreme Leader Ayatollah Ali Khamenei (L) and founder of the Islamic Republic Ayatollah Ruhollah Khomeini outside the former U.S. embassy in Tehran November 4, 2010. REUTERS/Raheb Homavandi/Files

Iran supreme leader blames West for Islamic State rise, wants regional solution

Iranian Supreme Leader Ayatollah Ali Khamenei blamed Western powers on Tuesday for the rise of Islamic State (IS) insurgents in Iraq and Syria and said they had no business tampering with the region's geopolitics.  Full Article 

REUTERS SHOWCASE

HK Protests

HK Protests

Hong Kong protesters plan march after fruitless talks with government.  Full Article 

Double Murder

Double Murder

Thailand tourist murder suspects retract confessions.  Full Article 

Rousseff in Lead

Rousseff in Lead

Brazil's Rousseff pulls ahead of Neves before Sunday's election - poll.  Full Article 

Indonesia Cabinet

Indonesia Cabinet

Indonesia president to make new cabinet picks after 8 rejected.  Full Article 

Fighting Ebola

Fighting Ebola

J&J aims for 1 million Ebola vaccine doses in 2015.  Full Article 

Baghdad Bombing

Baghdad Bombing

Baghdad restaurant bombs kill 21  Full Article 

Canada On Alert

Canada On Alert

Canada raises terrorism threat level, cites Islamist chatter.  Full Article 

Foreign Threat?

Foreign Threat?

Sweden gets two new sightings, as hunt for undersea intruder goes on.  Full Article 

Iran Nuclear Talks

Iran Nuclear Talks

Exclusive: Iran offers "compromises" in nuclear talks, West unmoved  Full Article 

Reuters India Mobile

Reuters India Mobile

Get the latest news on the go. Visit Reuters India on your mobile device.  Full Coverage