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Central Japan nuclear unit fails safety check

The Nuclear Regulation Authority, Japan's nuclear watchdog, holds a meeting in Tokyo on Nov. 13, 2024, at which it formally decided the No. 2 reactor at the Tsuruga nuclear power plant in Fukui Prefecture has failed to pass a safety review needed for its restart, due to the possibility that an active fault runs underneath the unit.

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Central Japan nuclear unit fails safety check

The Nuclear Regulation Authority, Japan's nuclear watchdog, holds a meeting in Tokyo on Nov. 13, 2024, at which it formally decided the No. 2 reactor at the Tsuruga nuclear power plant in Fukui Prefecture has failed to pass a safety review needed for its restart, due to the possibility that an active fault runs underneath the unit.

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Central Japan nuclear unit fails safety check

The Nuclear Regulation Authority, Japan's nuclear watchdog, holds a meeting in Tokyo on Nov. 13, 2024, at which it formally decided the No. 2 reactor at the Tsuruga nuclear power plant in Fukui Prefecture has failed to pass a safety review needed for its restart, due to the possibility that an active fault runs underneath the unit.

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Japan's nuclear watchdog chief

Shinsuke Yamanaka, chairman of the Nuclear Regulation Authority, Japan's nuclear watchdog, attends a press conference in Tokyo on Dec. 27, 2023.

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Japan's nuclear watchdog chief

Shinsuke Yamanaka, chairman of the Nuclear Regulation Authority, Japan's nuclear watchdog, attends a press conference in Tokyo on Dec. 27, 2023.

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Japan's nuclear watchdog chief

Shinsuke Yamanaka, chairman of the Nuclear Regulation Authority, Japan's nuclear watchdog, attends a press conference in Tokyo on Dec. 27, 2023.

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Japan regulator OKs nuclear wastewater discharge system at Fukushima plant

STORY: Japan regulator OKs nuclear wastewater discharge system at Fukushima plant DATELINE: July 7, 2023 LENGTH: 00:02:45 LOCATION: Tokyo CATEGORY: ENVIRONMENT SHOTLIST: 1. various of Japan STORYLINE: Japan's nuclear regulators on Friday formally gave the green light to facilities for discharging nuclear-contaminated water from the crippled Fukushima nuclear power plant, local media reported. The Nuclear Regulation Authority (NRA) issued the certificate to the plant's operator Tokyo Electric Power Company (TEPCO), showing that the facilities have passed final checks, Kyodo News said. The approval was given after the nuclear watchdog inspected the system which includes pumps to take in massive seawater and emergency shut-off valves, it said. The move means logistical preparations have been completed, putting the country on track to start releasing nuclear wastewater into the sea around this summer, said the report. The approval came after the International Atomic Energy Agency (IAEA) published its final

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J-Power to apply for Oma nuclear plant safety inspection

TOKYO, Japan - File photo taken in June 2013 shows the Oma nuclear power plant, which is under construction in Japan's northeastern prefecture of Aomori. Electric Power Development Co., or J-Power, will apply on Dec. 16, 2014 to the Nuclear Regulation Authority for a safety screening for the plant.

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New nuclear regulator attends press conference

TOKYO, Japan - Geologist Akira Ishiwatari attends a press conference in Tokyo on Sept. 19, 2014, after becoming a commissioner at Japan's Nuclear Regulation Authority. Ishiwatari, a former Tohoku University professor, will oversee the assessment of earthquake and tsunami hazards that could affect nuclear plants.

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New nuclear regulator attends press conference

TOKYO, Japan - Satoru Tanaka attends a press conference in Tokyo on Sept. 19, 2014, after becoming a commissioner at Japan's Nuclear Regulation Authority. Tanaka, a former chairman of the Atomic Energy Society of Japan, said at the press conference he will do his job "on the basis of science and technology."

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Japan nuclear plant gets safety OK

TOKYO, Japan - Shunichi Tanaka, chairman of Japan's Nuclear Regulation Authority, speaks at a news conference in Tokyo on Sept. 10, 2014, after the NRA approved the final version of its screening report on the Nos. 1 and 2 reactors at Kyushu Electric Power Co.'s Sendai nuclear plant under new regulations imposed following the 2011 Fukushima nuclear disaster. With the approval, the two reactors in Kagoshima Prefecture, southwestern Japan, moved closer to becoming the first in the country to be restarted.

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Japan nuclear plant gets safety OK, moves closer to resumption

TOKYO, Japan - Members of Japan's Nuclear Regulation Authority hold a meeting in Tokyo on Sept. 10, 2014 to discuss the safety of the No. 1 and 2 reactors at the Sendai nuclear power plant of Kyushu Electric Power Co. The five-member panel approved the final version of its screening report on the reactors under the new regulations imposed following the 2011 Fukushima nuclear disaster.

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Hokuriku Electric to seek resumption of Shika nuclear plant

NAGOYA, Japan - File photo taken in April 2014 shows Hokuriku Electric Power Co.'s Shika nuclear power plant in Shika in Japan's central prefecture of Ishikawa. The operator plans to apply for a safety review by the Nuclear Regulation Authority on Aug. 12, 2014, to resume operation of the plant.

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Diet OKs nominees for nuclear regulatory body commissioners

TOKYO, Japan - Photo shows Akira Ishiwatari, a Tohoku University professor and geologist, who was approved by Japan's parliament for the post of Nuclear Regulation Authority Commissioner on June 11, 2014.

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Diet OKs nominees for nuclear regulatory body commissioners

TOKYO, Japan - Photo shows Satoru Tanaka, a University of Tokyo professor, who was approved by Japan's parliament for the post of Nuclear Regulation Authority Commissioner on June 11, 2014.

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NRA commissioner's seabed inspection

AOMORI, Japan - Japan's Nuclear Regulation Authority Commissioner Kunihiko Shimazaki (L) heads to board a fishing boat in Higashidori, Aomori Prefecture on May 13, 2014, for a seabed inspection.

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NRA's Shimazaki inspects Shimokita Peninsula

AOMORI, Japan - Japan's Nuclear Regulation Authority Commissioner Kunihiko Shimazaki (L) is briefed about an observation ship's recording device for underground structure assessment in Rokkasho, Aomori Prefecture, on May 12, 2014, during his inspection of sites for underground structure investigation on Shimokita Peninsula conducted by the secretariat of the authority.

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NRA's Shimazaki inspects Shimokita Peninsula

AOMORI, Japan - Japan's Nuclear Regulation Authority Commissioner Kunihiko Shimazaki (R) aboard an observation ship is briefed about equipment for underground structure assessment in Rokkasho, Aomori Prefecture, on May 12, 2014, during his inspection of sites for underground structure investigation on Shimokita Peninsula conducted by the secretariat of the authority.

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Protesters oppose possible reactor restart in Kyushu

TOKYO, Japan - Protesters rally in Tokyo on March 13, 2014, against the possible restart of nuclear reactors at Kyushu Electric Power Co.'s Sendai atomic power plant in Kagoshima Prefecture, southwestern Japan. The Nuclear Regulation Authority decided to place priority on conducting safety reviews of two reactors at the plant, making them potentially the closest to being allowed to restart among Japan's 48 offline commercial reactors.

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Sendai nuclear power plant

TOKYO, Japan - Shunichi Tanaka (R), head of Japan's Nuclear Regulation Authority, asks for the opinions of other nuclear regulators during a session in Tokyo on March 13, 2014. The authority decided the same day to prioritize the safety review of two reactors at the Sendai plant in southwestern Japan, making them potentially the closest to be allowed to restart among Japan's 48 offline commercial reactors.

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New safety requirements for reactors

TOKYO, Japan - Nuclear Regulation Authority Chairman Shunichi Tanaka speaks at an NRT regular meeting in Tokyo on June 19, 2013. The NRT at the meeting officially decided on Japan's new safety requirements for reactors aimed at preventing recurrences of disasters like the one at the Fukushima Daiichi complex in 2011.

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Iodine tablets help prevent thyroid cancer

TOKYO, Japan - Undated file photo shows iodine tablets to prevent thyroid cancer after radiation exposure. The nuclear disaster mitigation guidelines revised by Japan's Nuclear Regulation Authority on June 5, 2013, stated people living within a 5-km radius of a nuclear power plant should be given a supply of iodine tablets so they can promptly take the pills after an accident occurs.

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Nuclear authority not to allow restart of Monju reactor

TOKYO, Japan - File photo taken in March 2012 shows the prototype fast-breeder nuclear reactor Monju in Tsuruga, Fukui Prefecture. Japan's Nuclear Regulation Authority is considering not allowing the Japan Atomic Energy Agency, the operator of the 280,000-kilowatt reactor, to resume operations before its sloppy safety management is improved, sources close to the matter said May 13, 2013.

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Nuclear regulators in Tokyo

TOKYO, Japan - Nuclear regulators including Shunichi Tanaka (C), head of Japan's Nuclear Regulation Authority, pose for photos in Tokyo on May 6, 2013. The regulators from nine countries gathered for a three-day meeting to discuss their responses to the 2011 nuclear accident at the Fukushima Daiichi power plant.

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Fault under Tsuruga plant

TOKYO, Japan - This December 2012 file photo shows a geologic fault, known as D-1, running directly underneath the No. 2 reactor at Japan Atomic Power Co.'s Tsuruga plant in Fukui Prefecture. A panel of experts under Japan's Nuclear Regulation Authority reaffirmed on Jan. 28, 2013, that the fault is likely to be active.

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U.S. nuclear regulator in Japan

TOKYO, Japan - U.S. Nuclear Regulatory Commission chief Allison Macfarlane (L) and Japan's Nuclear Regulation Authority chief Shunichi Tanaka shake hands in Tokyo on Dec. 14, 2012. They agreed to enhance cooperation.

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Regulator suggests active faults beneath Higashidori plant

HIGASHIDORI, Japan - A research team of Japan's Nuclear Regulation Authority examines a fault in a trench on the premises of the Higashidori nuclear power plant site in Aomori Prefecture on Dec. 14, 2012. NRA Commissioner Kunihiko Shimazaki said the same day that faults beneath the plant site could be active and dangerous. (Pool photo by Kyodo News)

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Regulator suggests active faults beneath Higashidori plant

HIGASHIDORI, Japan - A research team of Japan's Nuclear Regulation Authority examines a fault in a trench on the premises of the Higashidori nuclear power plant site in Aomori Prefecture on Dec. 14, 2012. NRA Commissioner Kunihiko Shimazaki said the same day that faults beneath the plant site could be active and dangerous. (Pool photo by Kyodo News)

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Regulator suggests active faults beneath Higashidori plant

HIGASHIDORI, Japan - A research team of Japan's Nuclear Regulation Authority examines a fault in a trench on the premises of the Higashidori nuclear power plant site in Aomori Prefecture on Dec. 14, 2012. NRA Commissioner Kunihiko Shimazaki said the same day that faults beneath the plant site could be active and dangerous. (Pool photo by Kyodo News)

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Radiation spread projections in severe accidents

TOKYO, Japan - Photo taken Oct. 24, 2012, shows documents giving projections for the spread of radiation from nationwide nuclear reactors in the event of a severe accident, distributed at a meeting of the Nuclear Regulation Authority, in Tokyo on Oct. 24, 2012. In releasing their first such projections, Japan's nuclear regulatory authorities said the amount of radiation released a week after an accident at Tokyo Electric Power Co.'s Kashiwazaki-Kariwa plant in Niigata Prefecture could reach the level where evacuation is recommended for those living as far as 40 kilometers from the plant.

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Radiation spread projections in severe accidents

TOKYO, Japan - Shunichi Tanaka, head of the Nuclear Regulation Authority, takes a look at documents giving projections for the spread of radiation from nationwide nuclear reactors in the event of a severe accident, at an NRA meeting in Tokyo on Oct. 24, 2012. In releasing their first such projections, Japan's nuclear regulatory authorities said the amount of radiation released a week after an accident at Tokyo Electric Power Co.'s Kashiwazaki-Kariwa plant in Niigata Prefecture could reach the level where evacuation is recommended for those living as far as 40 kilometers from the plant.

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Fukushima Plant Still Posing Risks 4 Years After Meltdowns: regulator

FUKUSHIMA, JAPAN - MAR. 11: The situation still remains risky at the crippled Fukushima Daiichi power plant four years after nuclear meltdowns occurred in 2011, the chairman of Japan's nuclear regulator said Wednesday, vowing utmost efforts to avoid further trouble there. "There have been quite a few accidents and problems at the Fukushima plant in the past year, and we need to face the reality that they are causing anxiety and anger among people in Fukushima," Shunichi Tanaka told personnel at the Nuclear Regulation Authority on the fourth anniversary of the nuclear disaster. Mishaps still occur regularly at the radiation-leaking complex in Fukushima Prefecture, where decommissioning

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Nuclear reactor in Shimane prefecture passes safety screening: it sits in Japan’s sole nuclear plant in a prefectural capital

The Nuclear Regulation Authority held a regular meeting on Sept. 15 and decided to certify that safety measures taken at the No. 2 unit of Chugoku Electric Power Co.'s nuclear plant in the Shimane prefectural capital of Matsue meet Japan’s new regulatory standards, formally granting safety approval for a restart to the reactor. It is the 17th reactor in a total of 10 nuclear plants across the country cleared by the NRA. The No. 2 unit is a boiling water reactor, the same type as those installed at the disaster-hit Fukushima Daiichi nuclear power plant. It is the fifth boiling water reactor among such reactors at four nuclear plants that have passed the NRA’s safety screenings. The Shimane nuclear plant is the only one located in a Japanese prefectural capital, raising concern about the evacuation of residents in case of an accident. ==Date: Sept. 11, 2021, Place: Matsue City, Shimane Prefecture, JAPAN

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Watchdog chief urges nuclear safety efforts by gov't, utilities

Shunichi Tanaka, the chairman of Japan's Nuclear Regulation Authority, gives an exclusive interview to Kyodo News on March 7, 2016, ahead of the fifth anniversary of the Fukushima nuclear disaster on March 11. Tanaka urged the government and utility companies to make constant efforts to ensure the safety of nuclear reactors, without dropping their guard just because the units cleared the regulator's tough safety screening. (Kyodo) ==Kyodo

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IAEA examines Japan's nuclear safety measures

Philippe Jamet (L), who heads the International Atomic Energy Agency's delegation to Japan, and Shunichi Tanaka, chairman of Japan's Nuclear Regulation Authority, attend a press conference in Tokyo on Jan. 22, 2016. The delegation finished examining Japan's nuclear safety measures, and will compile a final report in about three months. (Kyodo) ==Kyodo

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IAEA's team of experts meets with Japan's nuclear regulators

Philippe Jamet (C front), who heads the International Atomic Energy Agency's team of experts, addresses a meeting with Japan's Nuclear Regulation Authority in Tokyo on Jan. 11, 2016. The IAEA team is visiting Japan to examine the country's measures over nuclear safety and radiological protection. (Kyodo) ==Kyodo

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Officials explain safety measures to those living near nuclear plant

Shikoku Electric Power Co. officials (L) visit residents living within a 20-kilometer radius of its Ikata nuclear power station, located in Shikoku, one of Japan's main islands, on July 22, 2015. The officials explained how the No. 3 reactor of the Ikata complex won approval from the Nuclear Regulation Authority for its safety measures against earthquakes, tsunami and other severe accidents. (Kyodo) ==Kyodo

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Ikata unit deemed meeting NRA's requirements in restart process

Japan's Nuclear Regulation Authority holds a regular meeting in Tokyo on July 15, 2015. The regulators officially decided at the meeting that Shikoku Electric Power Co.'s applied design and safety features of unit 3 of the Ikata nuclear power plant fulfill the NRA's new regulatory requirements for commercial power reactors. The unit in Ehime Prefecture moved a step closer to restarting. (Kyodo) ==Kyodo

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Shikoku Electric nuclear reactor clears major hurdle for restart

Japan's Nuclear Regulation Authority Chairman Shunichi Tanaka (L) attends a meeting in Tokyo on May 20, 2015. The nuclear regulator approved safety measures of an idled reactor at Shikoku Electric Power Co.'s Ikata plant in western Japan. (Kyodo) ==Kyodo

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Shikoku Electric nuclear reactor clears major hurdle for restart

People stage a protest in front of a building housing the Nuclear Regulation Authority in Tokyo on May 20, 2015, as a reactor at Shikoku Electric Power Co.'s Ikata nuclear power plant in Shikoku, one of Japan's main islands, cleared a major safety hurdle toward resumption. (Kyodo) ==Kyodo

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Shikoku Electric nuclear reactor clears major hurdle for restart

People stage a protest in front of a building housing the Nuclear Regulation Authority in Tokyo on May 20, 2015, as a reactor at Shikoku Electric Power Co.'s Ikata nuclear power plant in Shikoku, one of Japan's main islands, cleared a major safety hurdle toward resumption. (Kyodo) ==Kyodo

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Ikata plant's No. 3 reactor to clear safety hurdle

Photo taken from a Kyodo News helicopter on May 17, 2015, shows Shikoku Electric Power Co.'s Ikata nuclear power plant in Shikoku, one of Japan's main islands. Its No. 3 reactor will clear a major safety hurdle toward resumption on May 20, following four other reactors -- two at the Sendai complex and two at the Takahama plant -- in obtaining safety approval by the Nuclear Regulation Authority. (Kyodo) ==Kyodo

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Ikata plant's No. 3 reactor to clear safety hurdle

Photo taken from a Kyodo News helicopter on May 17, 2015, shows Shikoku Electric Power Co.'s Ikata nuclear power plant in Shikoku, one of Japan's main islands. Its No. 3 reactor will clear a major safety hurdle toward resumption on May 20, following four other reactors -- two at the Sendai complex and two at the Takahama plant -- in obtaining safety approval by the Nuclear Regulation Authority. (Kyodo) ==Kyodo

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Regulator chief questions court ruling to ban Takahama restart

Shunichi Tanaka, chairman of Japan's Nuclear Regulation Authority, at a press conference in Tokyo on April 15, 2015, questions the Fukui District Court injunction issued the day before, banning the restart of two reactors at Kansai Electric Power Co.'s Takahama plant. Tanaka said the regulator's safety standards are "at the highest level in the world." (Kyodo) ==Kyodo

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NRA members inspect levee of Onagawa nuclear power plant

Members of Japan's Nuclear Regulation Authority inspect work to raise the height of a levee at Tohoku Electric Power Co.'s Onagawa nuclear power plant in Miyagi Prefecture on Jan. 23, 2015. (Kyodo) ==Kyodo

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NRA inspects No. 2 reactor of Onagawa nuclear plant

The No. 2 reactor at Tohoku Electric Power Co.'s Onagawa nuclear power plant in Miyagi Prefecture is seen on Jan. 23, 2015. Japan's Nuclear Regulation Authority conducted an on-site inspection of the reactor the same day. (Kyodo) ==Kyodo

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Japan to require new cooling system for boiling water reactors

Photo taken April 29, 2017, shows Chubu Electric Power Co.'s Hamaoka nuclear power plant in Shizuoka Prefecture. Japan's Nuclear Regulation Authority approved on Oct. 18 a revision of safety regulations to make mandatory the installation of new emergency cooling systems for boiling water reactors. The Hamaoka plant is among those affected by the rule change. (Kyodo) ==Kyodo

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NRA commissioner inspects geological strata in western Japan

Japan's Nuclear Regulation Authority Commissioner Akira Ishiwatari (R) inspects samples of geological strata at Chugoku Electric Power Co.'s Shimane nuclear power plant in Matsue, western Japan, on Oct. 30, 2015. (Pool photo by Mainichi Shimbun)(Kyodo) ==Kyodo

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Nuclear regulation authority inspects geological strata in Matsue

Japan's Nuclear Regulation Authority conducts an inspection on an overfold near Chugoku Electric Power Co.'s Shimane nuclear power plant in Matsue, western Japan, on Oct. 30, 2015. (Kyodo) ==Kyodo

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NRA commissioner inspects geological strata in western Japan

Japan's Nuclear Regulation Authority Commissioner Akira Ishiwatari (3rd from R) inspects samples of geological strata at Chugoku Electric Power Co.'s Shimane nuclear power plant in Matsue, western Japan, on Oct. 30, 2015. (Pool photo by Mainichi Shimbun)(Kyodo) ==Kyodo