Nuclear Regulation Authority

NRA: Active fault lies below Tsuruga nuke...
The Asahi Shimbun
An active geologic fault lies directly under the idled No. 2 reactor at the Tsuruga nuclear power plant, according to a report compiled May 15, jeopardizing the possibility of...
EDITORIAL: Monju fast-breeder reactor program...
The Monju prototype fast-breeder reactor in Tsuruga, Fukui Prefecture (Asahi Shimbun file photo)
The Nuclear Regulation Authority (NRA) has decided to order an indefinite suspension of the use of the Monju prototype fast-breeder reactor.
Monju reactor faces long-term suspension over lax...
The Asahi Shimbun
Japan’s nuclear watchdog will indefinitely suspend the use of the Monju prototype fast-breeder reactor over the operator’s disregard for safety that continued even after...
Nuclear watchdog to answer unresolved questions...
The International Atomic Energy Agency's investigators tour the Fukushima No. 1 nuclear power plant on April 17. (Provided by the IAEA)
Japan's nuclear watchdog said it will seek to address unanswered questions about the Fukushima nuclear disaster in a report to be submitted to the Vienna-based International...
Minister indicates autumn restarts of nuclear...
Industry minister Toshimitsu Motegi (Asahi Shimbun file photo)
Industry minister Toshimitsu Motegi on April 23 said an idled nuclear reactor could be restarted as early as autumn, the first time a Cabinet member has mentioned a timetable...
KEPCO: 2 online Oi reactors meet new safety...
The Oi nuclear power plant, with the No. 3 and No. 4 reactors in the foreground (Asahi Shimbun file photo)
Kansai Electric Power Co. has concluded that the nation's only operating reactors, the No. 3 and No. 4 reactors at its Oi nuclear power plant in Fukui Prefecture, comply with...
EDITORIAL: Court issues timid ruling on grave issue ...
The two reactors shown at bottom at the Oi nuclear power plant in Fukui Prefecture are the only two units online in Japan. (Asahi Shimbun file photo)
A recent ruling by the Osaka District Court on the safety of two nuclear reactors didn’t signal a shift in attitude on the issue.
EDITORIAL: Government must build framework to...
Heat-exchange equipment is dismantled in October 2010 at the Tokai nuclear power plant in Ibaraki Prefecture, where decommissioning work has been ongoing since 1998. (Asahi Shimbun file photo)
The Nuclear Regulation Authority's proposal for new regulation standards, released on April 10, shows specifically which nuclear reactors should be short-listed as unfit to be...
New NRA rules impose costly roadblocks to restart...
The Ikata nuclear plant in Ehime Prefecture (Asahi Shimbun file photo)
For the next several years at least, Japan will probably have very limited ability to generate electricity through nuclear power.
Nuclear standards proposal may force...
The Mihama nuclear power plant operated by Kansai Electric Power Co. (Asahi Shimbun file photo)
Electric power companies will have to prepare back-up power sources and have fire trucks ready near all of their nuclear reactors. They will be required to construct sturdy...
Fukushima nuclear plant's cooling system goes...
The No. 3 reactor building, left, and the No. 4 reactor building at the Fukushima No. 1 nuclear power plant on March 19 (The Asahi Shimbun)
The cooling system for a fuel storage pool for one of the reactors at the crippled Fukushima No. 1 nuclear power plant in Japan temporarily failed on April 5 for the second...
Japanese regulators to investigate nuclear crisis
Fukushima No. 1 nuclear power plant (Asahi Shimbun file photo)
Japanese government regulators said on March 27 that for the first time they will conduct their own investigation into the country's nuclear crisis to address key unanswered...
Oi nuke reactors to stay online even when new...
The Oi nuclear power plant, with the No. 3 and No. 4 reactors in the foreground (Asahi Shimbun file photo)
Japan's nuclear authority said March 19 it will not order two reactors at the Oi nuclear power plant in Fukui Prefecture to be shut for screening when new safety standards, yet ...
INTERVIEW: Former U.S. nuke watchdog chair says...
Gregory Jaczko, former chairman of the U.S. Nuclear Regulatory Commission, during a recent interview with The Asahi Shimbun (Photo by Yuko Lanham)
As it is poised to impose strict regulatory measures on the operation of nuclear power plants, the Nuclear Regulation Authority is increasingly met by opposition that it is...
Nuclear watchdog: No easy task to scrap Fukushima...
Atsuhiko Kosaka, chief of the Nuclear Regulation Office at Fukushima No. 1 nuclear power plant (Asahi Shimbun file photo)
Japan could be saddled with fragile and hazardous reactors at the Fukushima No. 1 nuclear power plant for years to come, warned an official with the Nuclear Regulation...
Nuke plant operators put tab on new safety...
A levee at the Hamaoka nuclear power plant in Shizuoka Prefecture in November 2011 (Asahi Shimbun file photo)
Japan’s 10 nuclear power plant operators said it will cost close to 1 trillion yen ($10.87 billion) to bring them in compliance with government-mandated safety standards on...
Survey: No nuclear plants meet new safety standards
Workers conduct training for venting a reactor at the Shimane nuclear power plant in Shimane Prefecture in January 2012. (Asahi Shimbun file photo)
None of Japan’s 16 nuclear power plants has satisfied the government's proposed new safety standards, making them ineligible to be restarted in the near future, according to...
High radiation bars decommissioning of Fukushima...
The No. 4 reactor building at the Fukushima No. 1 nuclear power plant on Feb. 20 (Soichiro Yamamoto)
Preparations for the mammoth task of decommissioning crippled reactors at the Fukushima No. 1 nuclear power plant are being stymied by continued high levels of radiation from...
Nuclear watchdog: Fault lines under Higashidori...
Tohoku Electric Power Co.'s Higashidori nuclear power plant in Higashidori, Aomori Prefecture (Asahi Shimbun file photo)
Geological fault lines that run beneath Tohoku Electric Power Co.'s Higashidori nuclear power plant in Aomori Prefecture are almost certainly active, according to an expert...
Thwarted once, inspectors again seek truth about...
The No. 1 reactor building at the Fukushima No. 1 nuclear plant, now with a new weather cover (Asahi Shimbun file photo)
The Nuclear Regulation Authority is to inspect a building at the stricken Fukushima No. 1 nuclear plant that may contain evidence proving whether it was the powerful tsunami or ...