Nuclear power in Japan

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The Kashiwazaki-Kariwa Nuclear Power Plant, a nuclear plant with seven units, the largest single nuclear power station in the world, was completely shut down for 21 months following an earthquake in 2007. Kashiwazaki-Kariwa 04780017 (8388173865).jpg
The Kashiwazaki-Kariwa Nuclear Power Plant, a nuclear plant with seven units, the largest single nuclear power station in the world, was completely shut down for 21 months following an earthquake in 2007.

Nuclear power generated 5.55% of Japan's electricity in 2023. [2]

Contents

The country's nuclear power industry was heavily influenced by the Fukushima accident, caused by the 2011 Tōhoku earthquake and tsunami. Before 2011, Japan was generating up to 30% of its electrical power from nuclear reactors. [3] After the Fukushima accident, all reactors were shut down temporarily. As of November 2024, of the 54 nuclear reactors present in Japan before 2011, there were 33 operable reactors but only 13 reactors in 6 power plants were actually operating. [3] A total of 24 reactors are scheduled for decommissioning or are in the process of being decommissioned. [4] Others are in the process of being reactivated, or are undergoing modifications aimed to improve resiliency against natural disasters; Japan's 2030 energy goals posit that at least 33 will be reactivated by a later date. [5]

The Fukushima accident hardened attitudes toward nuclear power. In June 2011, immediately after the accident, more than 80% of Japanese said they were anti-nuclear and distrusted government information on radiation, [6] [7] [8] but ten years later, in March 2021, only 11 percent of Japanese said they wanted that nuclear energy generation to be discontinued immediately. Another 49 percent were asking for a gradual exit from nuclear energy. [9] In February 2023, a survey by Asahi Shimbun showed that 51% of participants in Japan favored the restart of nuclear plant operations, with 42% opposed. [10]

History

Up to 2011, Japan had steadily increased its nuclear generation over time. A dip in 2003 was due to TEPCO data falsification scandals in 2002 and caused a poor operating record. Electricity production in Japan.PNG
Up to 2011, Japan had steadily increased its nuclear generation over time. A dip in 2003 was due to TEPCO data falsification scandals in 2002 and caused a poor operating record.

Early years

In 1954, the Operations Coordinating Board of the United States National Security Council proposed that the U.S. government undertake a "vigorous offensive" urging nuclear energy for Japan in order to overcome the widespread reluctance of the Japanese population to build nuclear reactors in the country. Thirty-two million Japanese people, a third of the Japanese population, signed a petition calling for banning hydrogen bombs. [11] Journalist and author Foster Hailey wrote an op-ed piece published in The Washington Post where he called for adopting a proposal to build nuclear reactors in Japan, stating his opinion that: "Many Americans are now aware...that the dropping of the atomic bombs on Japan was not necessary. How better to make a contribution to amends than by offering Japan...atomic energy." [12] For several years starting in 1954, the United States Central Intelligence Agency and other U.S. government agencies ran a propaganda war targeting the Japanese population to vanquish the Japanese people's opposition to nuclear power. [13] [12] [ failed verification ]

In 1954, Japan budgeted 230 million yen for nuclear energy, marking the beginning of Japan's nuclear program. The Atomic Energy Basic Law limited activities to only peaceful purposes. [14] The first nuclear power plant in Japan, the Tōkai Nuclear Power Plant, was built by the UK's GEC and was commissioned in 1966.[ citation needed ]

Light water reactors

The Onagawa Nuclear Power Plant, a 3-unit BWR site typical of Japan's nuclear plants. Onagawa Nuclear Power Station in 2012.png
The Onagawa Nuclear Power Plant, a 3-unit BWR site typical of Japan's nuclear plants.

In the 1970s, the first light water reactors were built in cooperation with American companies. These plants were bought from U.S. vendors such as General Electric and Westinghouse with contractual work done by Japanese companies, who would later get a license themselves to build similar plant designs. Developments in nuclear power since that time have seen contributions from Japanese companies and research institutes on the same level as the other big users of nuclear power. From the early 1970s to the present, the Japanese government promoted the siting of nuclear power plants through a variety of policy instruments involving soft social control and financial incentives. [15] By offering large subsidies and public works projects to rural communities and by using educational trips, junkets for local government officials, and OpEds written as news by pro-nuclear supporters, the central government won over the support of depopulating, hard-on-their-luck coastal towns, and villages.

Later years

Japan's nuclear industry was not hit as hard by the effects of the Three Mile Island accident (TMI) or the Chernobyl disaster as some other countries. Construction of new plants continued to be strong through the 1980s, 1990s, and up to the present day. While many new plants had been proposed, all were subsequently canceled or never brought past initial planning. Cancelled plant orders include:

However, starting in the mid-1990s there were several nuclear-related accidents and cover-ups in Japan that eroded public perception of the industry, resulting in protests and resistance to new plants. These accidents included the Tokaimura nuclear accident, the Mihama steam explosion, cover-ups after an accident at the Monju reactor, among others, more recently the Chūetsu offshore earthquake aftermath. While exact details may be in dispute, it is clear that the safety culture in Japan's nuclear industry has come under greater scrutiny. [16]

2000s

On 18 April 2007, Japan and the United States signed the United States-Japan Joint Nuclear Energy Action Plan, aimed at putting in place a framework for the joint research and development of nuclear energy technology. [17] Each country will conduct research into fast reactor technology, fuel cycle technology, advanced computer simulation and modeling, small and medium reactors, safeguards and physical protection; and nuclear waste management. [18] In March 2008, Tokyo Electric Power Company announced that the start of operation of four new nuclear power reactors would be postponed by one year due to the incorporation of new earthquake resistance assessments. Units 7 and 8 of the Fukushima Daiichi plant would now enter commercial operation in October 2014 and October 2015, respectively. Unit 1 of the Higashidori plant is now scheduled to begin operating in December 2015, while unit 2 will start up in 2018 at the earliest. [19] As of September 2008, Japanese ministries and agencies were seeking an increase in the 2009 budget by 6%. The total requested comes to 491.4 billion Japanese yen (US$4.6 billion), and the focuses of research are the development of the fast breeder reactor cycle, next-generation light water reactors, the Iter project, and seismic safety. [20]

Fukushima disaster and aftermath

The use of nuclear power (in yellow) in Japan declined significantly after the Fukushima accident Japan net electricity generation in 2000 through 2017 (48061019128).png
The use of nuclear power (in yellow) in Japan declined significantly after the Fukushima accident

A 2011 independent investigation in Japan has "revealed a long history of nuclear power companies conspiring with governments to manipulate public opinion in favour of nuclear energy". One nuclear company "even stacked public meetings with its own employees who posed as ordinary citizens to speak in support of nuclear power plants". [21]

An energy white paper, approved by the Japanese Cabinet in October 2011, says "public confidence in the safety of nuclear power was greatly damaged" by the Fukushima disaster, and calls for a reduction in the nation's reliance on nuclear power. It also omits a section on nuclear power expansion that was in last year's policy review. [22] Nuclear Safety Commission Chairman Haruki Madarame told a parliamentary inquiry in February 2012 that "Japan's atomic safety rules are inferior to global standards and left the country unprepared for the Fukushima nuclear disaster last March". There were flaws in, and lax enforcement of, the safety rules governing Japanese nuclear power companies, and this included insufficient protection against tsunamis. [23]

On 6 May 2011, Prime Minister Naoto Kan ordered the Hamaoka Nuclear Power Plant to be shut down as an earthquake of magnitude 8.0 or higher is likely to hit the area within the next thirty years. [24] [25] [26] [27] [28]

As of 27 March 2012, Japan had only one out of 54 nuclear reactors operating; the Tomari-3, after the Kashiwazaki-Kariwa 6 was shut down. [29] The Tomari-3 was shut down for maintenance on 5 May, leaving Japan with no nuclear-derived electricity for the first time since 1970, when the country's then-only two reactors were taken offline for five days for maintenance. [30] On 15 June 2012, approval was given to restart Ōi Units 3 and 4 [31] which could take six weeks to bring them to full operation. On 1 July 2012, unit 3 of the Ōi Nuclear Power Plant was restarted. This reactor can provide 1,180 MW of electricity. [32] [33] On 21 July 2012 unit 4 was restarted, also 1,180 MW. [34] The reactor was shut down again on 14 September 2013, again leaving Japan with no operating power reactors. [35]

Global status of nuclear deployment as of 2023
.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}
Operating reactors, building new reactors
Operating reactors, planning new build
No reactors, building new reactors
No reactors, new in planning
Operating reactors, stable
Operating reactors, decided on phase-out
Civil nuclear power is illegal
No reactors Nuclear power station.svg
Global status of nuclear deployment as of 2023
  Operating reactors, building new reactors  Operating reactors, planning new build  No reactors, building new reactors  No reactors, new in planning  Operating reactors, stable  Operating reactors, decided on phase-out  Civil nuclear power is illegal  No reactors

Government figures in the 2014 Annual Report on Energy show that Japan depended on imported fossil fuels for 88% of its electricity in fiscal year 2013, compared with 62% in fiscal 2010. Without significant nuclear power, the country was self-sufficient for just 6% of its energy demand in 2012, compared with 20% in 2010. The additional fuel costs to compensate for its nuclear reactors being idled was ¥3.6 trillion. In parallel, domestic energy users have seen a 19.4% increase in their energy bills between 2010 and 2013, while industrial users have seen their costs rise 28.4% over the same period. [36]

In 2018 the Japanese government revised its energy plan to update the 2030 target for nuclear energy to 20%-22% of power generation by restarting reactors, compared to LNG 27%, coal 25%, renewables 23% and oil 3%. This would reduce Japan's carbon dioxide emissions by 26% compared to 2013, and increase self-sufficiency to about 24% by 2030, compared to 8% in 2016. [37]

Since the Fukushima Daiichi nuclear disaster, Japan has restarted twelve reactors and fifteen more have applied to restart, including two that are under construction. Amid the Russian invasion of Ukraine, Japan's Prime Minister announced the restart of nine units by winter 2022 and seven more by summer 2023. [10]

Investigations on the Fukushima disaster

The National Diet of Japan Fukushima Nuclear Accident Independent Investigation Commission (NAIIC) is the first independent investigation commission by the National Diet in the 66-year history of Japan's constitutional government. NAICC was established on 8 December 2011 with the mission to investigate the direct and indirect causes of the Fukushima nuclear accident. NAICC submitted its inquiry report to both houses on 5 July 2012. [a] [38]

The 10-member commission compiled its report based on more than 1,167 interviews and 900 hours of hearings. [39] [40] It was a six-month independent investigation, the first of its kind with wide-ranging subpoena powers in Japan's constitutional history, which held public hearings with former Prime Minister Naoto Kan and Tokyo Electric Power Co's former president Masataka Shimizu, who gave conflicting accounts of the disaster response. [41] The commission chairman, Kiyoshi Kurokawa, declared with respect to the Fukushima nuclear incident: "It was a profoundly man-made disaster that could and should have been foreseen and prevented." [42] He added that the "fundamental causes" of the disaster were rooted in "the ingrained conventions of Japanese culture." [43] The report outlines errors and willful negligence at the plant before the 2011 Tōhoku earthquake and tsunami on 11 March 2011 and a flawed response in the hours, days, and weeks that followed. It also offers recommendations and encourages Japan's parliament to "thoroughly debate and deliberate" the suggestions. [44]

Post-Fukushima nuclear policy

Japan's nuclear power reactors Timeline [45] [46] [47] [ view/edit ]

Ōma Nuclear Power PlantBreeder ReactorSteam-generating heavy water reactorPressurized water reactorBoiling water reactorMagnoxHigashidōri Nuclear Power PlantHigashidōri Nuclear Power PlantShika Nuclear Power PlantShika Nuclear Power PlantMonju Nuclear Power PlantTomari Nuclear Power PlantTomari Nuclear Power PlantTomari Nuclear Power PlantOnagawa Nuclear Power PlantOnagawa Nuclear Power PlantOnagawa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power PlantSendai Nuclear Power PlantSendai Nuclear Power PlantFukushima Daini Nuclear Power PlantFukushima Daini Nuclear Power PlantFukushima Daini Nuclear Power PlantFukushima Daini Nuclear Power PlantIkata Nuclear Power PlantIkata Nuclear Power PlantIkata Nuclear Power PlantŌi Nuclear Power PlantŌi Nuclear Power PlantŌi Nuclear Power PlantŌi Nuclear Power PlantFugen Nuclear Power PlantGenkai Nuclear Power PlantGenkai Nuclear Power PlantGenkai Nuclear Power PlantGenkai Nuclear Power PlantHamaoka Nuclear Power PlantHamaoka Nuclear Power PlantHamaoka Nuclear Power PlantHamaoka Nuclear Power PlantHamaoka Nuclear Power PlantShimane Nuclear Power PlantShimane Nuclear Power PlantShimane Nuclear Power PlantTakahama Nuclear Power PlantTakahama Nuclear Power PlantTakahama Nuclear Power PlantTakahama Nuclear Power PlantFukushima Daiichi Nuclear Power PlantFukushima Daiichi Nuclear Power PlantFukushima Daiichi Nuclear Power PlantFukushima Daiichi Nuclear Power PlantFukushima Daiichi Nuclear Power PlantFukushima Daiichi Nuclear Power PlantMihama Nuclear Power PlantMihama Nuclear Power PlantMihama Nuclear Power PlantTsuruga Nuclear Power PlantTsuruga Nuclear Power PlantTōkai Nuclear Power PlantTōkai Nuclear Power PlantFukushima Daiichi nuclear disasterŌma Nuclear Power PlantHigashidōri Nuclear Power PlantShika Nuclear Power PlantMonju Nuclear Power PlantTomari Nuclear Power PlantOnagawa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power PlantSendai Nuclear Power PlantFukushima Daini Nuclear Power PlantIkata Nuclear Power PlantŌi Nuclear Power PlantFugen Nuclear Power PlantGenkai Nuclear Power PlantHamaoka Nuclear Power PlantShimane Nuclear Power PlantTakahama Nuclear Power PlantFukushima Daiichi Nuclear Power PlantMihama Nuclear Power PlantTsuruga Nuclear Power PlantTōkai Nuclear Power PlantNuclear power in Japan

Japan's new energy plan, approved by the Liberal Democratic Party cabinet in April 2014, calls nuclear power "the country's most important power source". [48] Reversing a decision by the previous Democratic Party, the government will re-open nuclear plants, aiming for "a realistic and balanced energy structure". In May 2014 the Fukui District Court blocked the restart of the Oi reactors. [49] In April 2015 courts blocked the restarting of two reactors at the Takahama Nuclear Power Plant but permitted the restart of two reactors at the Sendai Nuclear Power Plant. [50] The government hopes that nuclear power will produce 20% of Japan's electricity by 2030. [50]

As of June 2015, approval was being sought from the new Nuclear Regulatory Agency for 24 units to restart, of the 54 pre-Fukushima units. The units also have to be approved by the local prefecture authorities before restarting. [51]

In July 2015 fuel loading was completed at the Sendai-1 nuclear plant, it restarted 11 August 2015 and was followed by unit 2 on 1 November 2015. Japan's Nuclear Regulatory Authority approved the restart of Ikata-3 which took place on 19 April 2016, this reactor is the fifth to receive approval to restart. [52] The Takahama Nuclear Power Plant unit 4 restarted in May 2017 and unit 3 in June 2017. And by 2023, Unit 1 and 2 of Takahama also restarted. [53]

In November 2016 Japan signed a nuclear cooperation agreement with India. Japanese nuclear plant builders saw this as potential lifeline given that domestic orders had ended following the Fukushima disaster, and India is proposing to build about 20 new reactors over the next decade. However, there is Japanese domestic opposition to the agreement, as India has not agreed to the Treaty on the Non-Proliferation of Nuclear Weapons. [54]

In 2014, following the failure of the prototype Monju sodium-cooled fast reactor, Japan agreed to cooperate in developing the French ASTRID demonstration sodium-cooled fast breeder reactor. [55] [56] As of 2016, France was seeking the full involvement of Japan in the ASTRID development. [56] [57]

In 2015, the Agency for Natural Resources and Energy changed the accounting provisions of the Electricity Business Act, so companies can account for decommissioning costs in ten yearly installments rather than a one-time charge. This will encourage the decommissioning of older and smaller nuclear units, most of which have not restarted since 2011. [58]

In 2022, during the global energy crisis which greatly increased the cost of imported fossil fuels, Japan's prime minister announced the building of safer next-generation nuclear reactors and restarting idle existing plants would be considered. In 2022 ten reactors were operational producing about 5% of Japan's electricity. [59]

In December 2022, Japan's Nuclear Regulation Authority (NRA) approved a draft-rule allowing nuclear reactors to operate beyond 60 years by excluding inspection downtimes. This was part of a policy at enhancing nuclear reactor use, including restarting many, extending older units' lives, and developing new reactor technologies. In February 2023, the cabinet approved this policy and the construction of new reactors. By May 2023, a law was enacted to officially omit shutdown periods from the 60-year limit, subject to the economy minister's approval. The law also required the NRA to perform inspections every 10 years for reactors over 30 years of operation. [10]

Seismicity

Japan has had a long history of earthquakes and seismic activity, and destructive earthquakes, often resulting in tsunamis, occur several times a century. Due to this, concern has been expressed about the particular risks of constructing and operating nuclear power plants in Japan. Amory Lovins has said: "An earthquake-and-tsunami zone crowded with 127 million people is an unwise place for 54 reactors". [60] To date, the most serious seismic-related accident has been the Fukushima Daiichi nuclear disaster, following the 2011 Tōhoku earthquake and tsunami.

Professor Katsuhiko Ishibashi, one of the seismologists who have taken an active interest in the topic, coined the term genpatsu-shinsai (原発震災), from the Japanese words for "nuclear power" and "quake disaster" to express the potential worst-case catastrophe that could ensue. [61] [62] Dr Kiyoo Mogi, former chair of the Japanese Coordinating Committee for Earthquake Prediction, [63] has expressed similar concerns, stating in 2004 that the issue 'is a critical problem which can bring a catastrophe to Japan through a man-made disaster'. [64] [65]

Warnings from Kunihiko Shimazaki, a professor of seismology at the University of Tokyo, were also ignored. In 2004, as a member of an influential cabinet office committee on offshore earthquakes, Mr. Shimazaki "warned that Fukushima's coast was vulnerable to tsunamis more than twice as tall as the forecasts of as much as five meters put forth by regulators and Tokyo Electric". [66] Minutes of the meeting on 19 February 2004, show that the government bureaucrats running the committee moved quickly to exclude his views from the committee's final report. He said the committee did not want to force Tokyo Electric to make expensive upgrades at the plant. [66]

Hidekatsu Yoshii, a member of the House of Representatives for Japanese Communist Party and an anti-nuclear campaigner, warned in March and October 2006 about the possibility of the severe damage that might be caused by a tsunami or earthquake. [67] During a parliamentary committee in May 2010 he made similar claims, warning that the cooling systems of a Japanese nuclear plant could be destroyed by a landslide or earthquake. [67] In response, Yoshinobu Terasaka, head of the Nuclear and Industrial Safety Agency, replied that the plants were so well designed that "such a situation is practically impossible". [67] Following damage at the Kashiwazaki-Kariwa Nuclear Power Plant due to the 2007 Chūetsu offshore earthquake, Kiyoo Mogi called for the immediate closure of the Hamaoka Nuclear Power Plant, [63] [68] which was knowingly built close to the centre of the expected Tōkai earthquake. [64] Katsuhiko Ishibashi previously claimed, in 2004, that Hamaoka was "considered to be the most dangerous nuclear power plant in Japan". [69]

The International Atomic Energy Agency (IAEA) has also expressed concern. At a meeting of the G8's Nuclear Safety and Security Group, held in Tokyo in 2008, an IAEA expert warned that a strong earthquake with a magnitude above 7.0 could pose a 'serious problem' for Japan's nuclear power stations. [70] Before Fukushima, "14 lawsuits charging that risks had been ignored or hidden were filed in Japan, revealing a disturbing pattern in which operators underestimated or hid seismic dangers to avoid costly upgrades and keep operating. But all the lawsuits were unsuccessful". [71] Underscoring the risks facing Japan, a 2012 research institute investigation has "determined there is a 70% chance of a magnitude-7 earthquake striking the Tokyo metropolitan area within the next four years, and 98% over 30 years". The March 2011 earthquake was a magnitude 9. [72]

Design standards

Horizontal acceleration experienced and design values during the 2007 and 2011 major earthquake and earthquake-tsunami events. Japan Nuclear Earthquake Shaking.PNG
Horizontal acceleration experienced and design values during the 2007 and 2011 major earthquake and earthquake-tsunami events.

Between 2005 and 2007, three Japanese nuclear power plants were shaken by earthquakes that far exceeded the maximum peak ground acceleration used in their design. [73] The tsunami that followed the 2011 Tōhoku earthquake, inundating the Fukushima I Nuclear Power Plant, was more than twice the design height, [74] while the ground acceleration also slightly exceeded the design parameters. [75]

In 2006 a Japanese government subcommittee was charged with revising the national guidelines on the earthquake-resistance of nuclear power plants, which had last been partially revised in 2001, [76] resulting in the publication of a new seismic guide – the 2006 Regulatory Guide for Reviewing Seismic Design of Nuclear Power Reactor Facilities. [76] The subcommittee membership included Professor Ishibashi, however his proposal that the standards for surveying active faults should be reviewed was rejected and he resigned at the final meeting, claiming that the review process was 'unscientific' [63] [77] and the outcome rigged [77] [78] to suit the interests of the Japan Electric Association, which had 11 of its committee members on the 19-member government subcommittee. [78] Ishibashi has subsequently claimed that, although the new guide brought in the most far-reaching changes since 1978, it was 'seriously flawed' because it underestimated the design basis of earthquake ground motion. [61] He has also claimed that the enforcement system is 'a shambles' [61] [73] and questioned the independence of the Nuclear Safety Commission after a senior Nuclear and Industrial Safety Agency official appeared to rule out a new review of the NSC's seismic design guide in 2007. [61]

Following the publication of the new 2006 Seismic Guide, the Nuclear and Industrial Safety Agency, at the request of the Nuclear Safety Commission, required the design of all existing nuclear power plants to be re-evaluated. [79]

Geological surveys

The standard of geological survey work in Japan is another area causing concern. In 2008 Taku Komatsubara, a geologist at the National Institute of Advanced Industrial Science and Technology alleged that the presence of active faults was deliberately ignored when surveys of potential new power plant sites were undertaken, a view supported by a former topographer. [80] Takashi Nakata, a seismologist from the Hiroshima Institute of Technology has made similar allegations and suggests that conflicts of interest between the Japanese nuclear industry and the regulators contribute to the problem. [78]

A 2011 Natural Resources Defense Council report that evaluated the seismic hazard to reactors worldwide, as determined by the Global Seismic Hazard Assessment Program data, placed 35 of Japan's reactors in the group of 48 reactors worldwide in very high and high seismic hazard areas. [81]

Nuclear power plants

As of January 2022 there are 33 operable reactors in Japan, of which 12 reactors are currently operating. [82] Additionally, 5 reactors have been approved for restart and further 8 have restart applications under review.

Nuclear power plants in Japan (view)
Green pog.svg  Active plants
Orange pog.svg  Inactive plants
Purple pog.svg  Cancelled plants
Black pog.svg  Decommissioned plants
Yellow dddd00 pog.svg  Planned plants
StationOperable
capacity (MW)
LocationCoordinatesStatus
Fugen Tsuruga, Fukui 35°45′16″N136°00′59″E / 35.75444°N 136.01639°E / 35.75444; 136.01639 (Fugen Nuclear Power Station) Decommissioned
Fukushima Daiichi Ōkuma and Futaba, Fukushima 37°25′17″N141°01′57″E / 37.42139°N 141.03250°E / 37.42139; 141.03250 (Fukushima I Nuclear Power Station) To be decommissioned [83]
Fukushima Daini 4,400 Naraha and Tomioka, Fukushima 37°19′10″N141°01′16″E / 37.31944°N 141.02111°E / 37.31944; 141.02111 (Fukushima II Nuclear Power Station) To be decommissioned [84]
Genkai 2,919 Higashimatsuura, Saga 33°30′56″N129°50′14″E / 33.51556°N 129.83722°E / 33.51556; 129.83722 (Genkai Nuclear Power Station) Operational (units 3 [85] and 4 only, [86] unit 1 to be decommissioned [87] )
Hamaoka 3,504 Omaezaki, Shizuoka 34°37′25″N138°08′33″E / 34.62361°N 138.14250°E / 34.62361; 138.14250 (Hamaoka Nuclear Power Station) Suspended (units 1 and 2 to be decommissioned)
Higashidōri 1,100 Higashidōri, Aomori 41°11′17″N141°23′25″E / 41.18806°N 141.39028°E / 41.18806; 141.39028 (Higashidōri Nuclear Power Station) Suspended
Ikata 890 Nishiuwa, Ehime 33°29′27″N132°18′41″E / 33.49083°N 132.31139°E / 33.49083; 132.31139 (Ikata Nuclear Power Station) Operational (unit 3 only, units 1 and 2 to be decommissioned [87] [88] )
Kashiwazaki-Kariwa 8,212 Kashiwazaki and Kariwa, Niigata 37°25′42″N138°36′06″E / 37.42833°N 138.60167°E / 37.42833; 138.60167 (Kashiwazaki-Kariwa Nuclear Power Station) Suspended [89]
Maki Maki, Niigata 37°25′17″N141°01′57″E / 37.42139°N 141.03250°E / 37.42139; 141.03250 (Maki Nuclear Power Station) Withdrawn
Mihama 780 Mihama, Fukui 35°42′09″N135°57′48″E / 35.70250°N 135.96333°E / 35.70250; 135.96333 (Mihama Nuclear Power Station) Operational (unit 3 only, units 1 and 2 to be decommissioned [87] )
Monju Tsuruga, Fukui 35°44′25″N135°59′17″E / 35.74028°N 135.98806°E / 35.74028; 135.98806 (Monju Nuclear Power Station) To be decommissioned
Namie-Odaka Minamisōma and Namie, Fukushima 37°30′48.2″N141°02′03.1″E / 37.513389°N 141.034194°E / 37.513389; 141.034194 (Namie-Odaka Nuclear Power Plant) Withdrawn
Ōi 2,254 Ōi, Fukui 35°32′26″N135°39′07″E / 35.54056°N 135.65194°E / 35.54056; 135.65194 (Ōi Nuclear Power Station) Operational (units 3 and 4 [90] only, units 1 and 2 to be decommissioned)
Ōma 1,383 Ōma, Aomori 41°30′35″N140°54′37″E / 41.50972°N 140.91028°E / 41.50972; 140.91028 (Ōma Nuclear Power Plant) Under construction
Onagawa 2,174 Oshika and Ishinomaki, Miyagi 38°24′04″N141°29′59″E / 38.40111°N 141.49972°E / 38.40111; 141.49972 (Onagawa Nuclear Power Station) Operational (unit 2 only, unit 1 to be decommissioned [91] )
Sendai 1,780 Satsumasendai, Kagoshima 31°50′01″N130°11′23″E / 31.83361°N 130.18972°E / 31.83361; 130.18972 (Sendai Nuclear Power Station) Operational (units 1 and 2)
Shika 1,898 Shika, Ishikawa 37°03′40″N136°43′35″E / 37.06111°N 136.72639°E / 37.06111; 136.72639 (Shika Nuclear Power Station) Suspended
Shimane 820 Matsue, Shimane 35°32′18″N132°59′57″E / 35.53833°N 132.99917°E / 35.53833; 132.99917 (Shimane Nuclear Power Station) Suspended (unit 1 to be decommissioned [87] )
Takahama 3,304 Takahama, Fukui 35°31′20″N135°30′17″E / 35.52222°N 135.50472°E / 35.52222; 135.50472 (Takahama Nuclear Power Station) Operational (units 1, 2, 3 and 4)
Tōkai 1,100 Tōkai, Ibaraki 36°27′59″N140°36′24″E / 36.46639°N 140.60667°E / 36.46639; 140.60667 (Tōkai Nuclear Power Station) Suspended
Tomari 2,070 Tomari, Hokkaido 43°02′10″N140°30′45″E / 43.03611°N 140.51250°E / 43.03611; 140.51250 (Tomari Nuclear Power Station) Suspended [92]
Tsuruga 1,160 Tsuruga, Fukui 35°40′22″N136°04′38″E / 35.67278°N 136.07722°E / 35.67278; 136.07722 (Tsuruga Nuclear Power Station) Suspended (unit 1 to be decommissioned [87] )
Total39,748

On 6 May 2011, then Prime Minister Naoto Kan requested the Hamaoka Nuclear Power Plant be shut down as an earthquake of magnitude 8.0 or higher is estimated 87% likely to hit the area within the next 30 years. [93] [94] [95] Kan wanted to avoid a possible repeat of the Fukushima nuclear disaster. [27] On 9 May 2011, Chubu Electric decided to comply with the government's request. In July 2011, a mayor in Shizuoka Prefecture and a group of residents filed a lawsuit seeking the decommissioning of the reactors at the Hamaoka nuclear power plant permanently. [96]

In April 2014, Reuters reported that Prime Minister Shinzo Abe favours restarting nuclear plants, but that its analysis suggests that only about one-third to two-thirds of reactors will be in a technical and economic position to restart. [97] In April 2017 the Nuclear Regulation Authority approved plans to decommission the Genkai 1, Mihama 1 and 2, Shimane 1, and Tsuruga 1 reactors. [87]

Nuclear accidents

In terms of consequences of radioactivity releases and core damage, the Fukushima I nuclear accidents in 2011 were the worst experienced by the Japanese nuclear industry, in addition to ranking among the worst civilian nuclear accidents, though no fatalities were caused and no serious exposure of radiation to workers occurred. The Tokaimura reprocessing plant fire in 1999 had 2 worker deaths, one more was exposed to radiation levels above legal limits, and over 660 others received detectable radiation doses but within permissible levels, well below the threshold to affect human health. The Mihama Nuclear Power Plant experienced a steam explosion in one of the turbine buildings in 2004 where five workers were killed and six injured. [98]

2011 accidents

A map showing epicenter of earthquake and position of nuclear power plants JAPAN EARTHQUAKE 20110311.svg
A map showing epicenter of earthquake and position of nuclear power plants

There have been many nuclear shutdowns, failures, and three partial meltdowns which were triggered by the 2011 Tōhoku earthquake and tsunami.

Plant descriptionAccident descriptions
Fukushima Daiichi Nuclear Power Plant
Fukushima II Nuclear Power Plant Fukushima II nuclear accidents
Onagawa Nuclear Power Plant Onagawa Nuclear Power Plant incidents
Tōkai Nuclear Power Plant Tōkai Nuclear Power Plant incidents
Rokkasho Reprocessing Plant Rokkasho Reprocessing Plant incidents

Fukushima Daiichi nuclear disaster

According to the Federation of Electric Power Companies of Japan, "by April 27 approximately 55 percent of the fuel in reactor unit 1 had melted, along with 35 percent of the fuel in unit 2, and 30 percent of the fuel in unit 3; and overheated spent fuels in the storage pools of units 3 and 4 probably were also damaged". [99] The accident exceeds the 1979 Three Mile Island accident in seriousness, and is comparable to the 1986 Chernobyl disaster. [99] The Economist reports that the Fukushima disaster is "a bit like three Three Mile Islands in a row, with added damage in the spent-fuel stores", [100] and that there will be ongoing impacts:

Years of clean-up will drag into decades. A permanent exclusion zone could end up stretching beyond the plant’s perimeter. Seriously exposed workers may be at increased risk of cancers for the rest of their lives... [100]

On 24 March 2011, Japanese officials announced that "radioactive iodine-131 exceeding safety limits for infants had been detected at 18 water-purification plants in Tokyo and five other prefectures". Officials said also that the fallout from the Dai-ichi plant is "hindering search efforts for victims from the March 11 earthquake and tsunami". [101]

Problems in stabilizing the Fukushima Daiichi nuclear power plant have hardened attitudes to nuclear power. As of June 2011, "more than 80 percent of Japanese now say they are anti-nuclear and distrust government information on radiation". [6] The ongoing Fukushima crisis may spell the end of nuclear power in Japan, as "citizen opposition grows and local authorities refuse permission to restart reactors that have undergone safety checks". Local authorities are skeptical that sufficient safety measures have been taken and are reticent to give their permission – now required by law – to bring suspended nuclear reactors back online. [6] [102]

Two government advisers have said that "Japan's safety review of nuclear reactors after the Fukushima disaster is based on faulty criteria and many people involved have conflicts of interest". Hiromitsu Ino, Professor Emeritus at the University of Tokyo, says "The whole process being undertaken is exactly the same as that used previous to the Fukushima Dai-Ichi accident, even though the accident showed all these guidelines and categories to be insufficient". [103]

In 2012, former prime minister Naoto Kan was interviewed about the Fukushima nuclear disaster, and has said that at one point Japan faced a situation where there was a chance that people might not be able to live in the capital zone including Tokyo and would have to evacuate. He says he is haunted by the specter of an even bigger nuclear crisis forcing tens of millions of people to flee Tokyo and threatening the nation's existence. "If things had reached that level, not only would the public have had to face hardships but Japan's very existence would have been in peril". [104] That convinced Kan to "declare the need for Japan to end its reliance on atomic power and promote renewable sources of energy such solar that have long taken a back seat in the resource-poor country's energy mix". [104]

Other accidents

Other accidents of note include: [105]

Nuclear waste disposal

Japanese policy is to reprocess its spent nuclear fuel. Originally spent fuel was reprocessed under contract in England and France, but then the Rokkasho Reprocessing Plant was built, with operations originally expected to commence in 2007. [107] The policy to use recovered plutonium as mixed oxide (MOX) reactor fuel was questioned on economic grounds, and in 2004 it was revealed the Ministry of Economy, Trade and Industry had covered up a 1994 report indicating reprocessing spent fuel would cost four times as much as burying it. [108]

In 2000, a Specified Radioactive Waste Final Disposal Act called for creation of a new organization to manage high level radioactive waste, and later that year the Nuclear Waste Management Organization of Japan (NUMO) was established under the jurisdiction of the Ministry of Economy, Trade and Industry. NUMO is responsible for selecting a permanent deep geological repository site, construction, operation and closure of the facility for waste emplacement by 2040. [109] [110] Site selection began in 2002 and application information was sent to 3,239 municipalities, but by 2006, no local government had volunteered to host the facility. [111] Kōchi Prefecture showed interest in 2007, but its mayor resigned due to local opposition. In December 2013 the government decided to identify suitable candidate areas before approaching municipalities. [112]

In 2014 the head of the Science Council of Japan’s expert panel has said Japan's seismic conditions makes it difficult to predict ground conditions over the necessary 100,000 years, so it will be impossible to convince the public of the safety of deep geological disposal. [112]

The cost of MOX fuel had roughly quadrupled from 1999 to 2017, creating doubts about the economics of nuclear fuel reprocessing. [113] In 2018 the Japanese Atomic Energy Commission updated plutonium guidelines to try to reduce plutonium stockpiles, stipulating that the Rokkasho Reprocessing Plant should only produce the amount of plutonium required for MOX fuel for Japan's nuclear power plants. [114]

Nuclear regulatory bodies in Japan

Nuclear power companies

Electric utilities running nuclear plants

Japan is divided into a number of regions that each get electric service from their respective regional provider, all utilities hold a monopoly and are strictly regulated by the Japanese government. For more background information, see Energy in Japan. All regional utilities in Japan currently operate nuclear plants with the exception of the Okinawa Electric Power Company. They are also all members of the Federation of Electric Power Companies (FEPCO) industry organization. The companies are listed below.

The headquarters of Electric Power Development, or J-Power, whose activities are specially directed towards R&D on new power sources. Electric Power Development Co., Ltd (headquarters).jpg
The headquarters of Electric Power Development, or J-Power, whose activities are specially directed towards R&D on new power sources.
JAPC, jointly owned by several Japan's major electric utilities, was created by special provisions from the Japanese government to be the first company in Japan to run a nuclear plant. Today it still operates two separate sites.
This company was created by a special law after the end of World War II, it operates a number of coal fired, hydroelectric, and wind power plants, the Ohma nuclear plant that is under construction will mark its entrance to the industry upon completion.

Nuclear vendors and fuel cycle companies

Nuclear vendors provide fuel in its fabricated form, ready to be loaded in the reactor, nuclear services, and/or manage construction of new nuclear plants. The following is an incomplete list of companies based in Japan that provide such services. The companies listed here provide fuel or services for commercial light water plants, and in addition to this, JAEA has a small MOX fuel fabrication plant. Japan operates a robust nuclear fuel cycle. [115]

There have been discussions between Hitachi, Mitsubishi Heavy Industries and Toshiba about possibly consolidating some of their nuclear activities. [117]

Nuclear research and professional organizations in Japan

Research organizations

These organizations are government-funded research organizations, though many of them have special status to give them power of administration separate from the Japanese government. Their origins date back to the Atomic Energy Basic Law, but they have been reorganized several times since their inception.

Academic/professional organizations

Other proprietary organizations

Anti-nuclear movement

Anti-Nuclear Power Plant Rally on 19 September 2011 at Meiji Shrine complex in Tokyo. Sixty thousand people marched chanting "Sayonara nuclear power" and waving banners, to call on Japan's government to abandon nuclear power, following the Fukushima disaster. Anti-Nuclear Power Plant Rally on 19 September 2011 at Meiji Shrine Outer Garden 03.JPG
Anti-Nuclear Power Plant Rally on 19 September 2011 at Meiji Shrine complex in Tokyo. Sixty thousand people marched chanting "Sayonara nuclear power" and waving banners, to call on Japan's government to abandon nuclear power, following the Fukushima disaster.
Peaceful anti-nuclear protest in Tokyo, Japan, escorted by policemen, 16 April 2011. VOA Herman - 2011-04-16 anti-nuclear protests in Tokyo.jpg
Peaceful anti-nuclear protest in Tokyo, Japan, escorted by policemen, 16 April 2011.

Long one of the world's most committed promoters of civilian nuclear power, Japan's nuclear industry was not hit as hard by the effects of the 1979 Three Mile Island accident (USA) or the 1986 Chernobyl disaster (USSR) as some other countries. Construction of new plants continued to be strong through the 1980s and into the 1990s. However, starting in the mid-1990s there were several nuclear related accidents and cover-ups in Japan that eroded public perception of the industry, resulting in protests and resistance to new plants. These accidents included the Tokaimura nuclear accident, the Mihama steam explosion, cover-ups after accidents at the Monju reactor, and more recently the Kashiwazaki-Kariwa Nuclear Power Plant was completely shut down for 21 months following an earthquake in 2007. While exact details may be in dispute, it is clear that the safety culture in Japan's nuclear industry has come under greater scrutiny. [16]

The negative impact of the 2011 Fukushima nuclear disaster has changed attitudes in Japan. Political and energy experts describe "nothing short of a nationwide loss of faith, not only in Japan’s once-vaunted nuclear technology but also in the government, which many blame for allowing the accident to happen". [125] Sixty thousand people marched in central Tokyo on 19 September 2011, chanting "Sayonara nuclear power" and waving banners, to call on Japan's government to abandon nuclear power, following the Fukushima disaster. [8] [124] Bishop of Osaka, Michael Goro Matsuura, has called on the solidarity of Christians worldwide to support this anti-nuclear campaign. [126] In July 2012, 75,000 people gathered near in Tokyo for the capital's largest anti-nuclear event. Organizers and participants said such demonstrations signal a fundamental change in attitudes in a nation where relatively few have been willing to engage in political protests since the 1960s. [127]

Anti-nuclear groups include the Citizens' Nuclear Information Center, Stop Rokkasho, Hidankyo, Sayonara Nuclear Power Plants, Women from Fukushima Against Nukes, and the Article 9 group. People associated with the anti-nuclear movement include: Jinzaburo Takagi, Haruki Murakami, Kenzaburō Ōe, Nobuto Hosaka, Mizuho Fukushima, Ryuichi Sakamoto and Tetsunari Iida.

See also

Notes

  1. The startpage of the Fukushima Nuclear Accident Independent Investigation Commission internetsite stated on 10 July 2012 the following information which was used as the basis for the previous sentences: "NAIIC (The National Diet of Japan Fukushima Nuclear Accident Independent Investigation Commission) is the first independent investigation commission by the National Diet in the 66-year history of Japan’s constitutional government. NAICC was established on 8 December 2011 with the mission to investigate the direct and indirect causes of the Fukushima nuclear incident. NAICC submitted its inquiry report to both houses on 5 July 2012."

Related Research Articles

<span class="mw-page-title-main">Tokyo Electric Power Company</span> Japanese electric utility holding company

Tokyo Electric Power Company Holdings, Incorporated is a Japanese electric utility holding company servicing Japan's Kantō region, Yamanashi Prefecture, and the eastern portion of Shizuoka Prefecture. This area includes Tokyo. Its headquarters are located in Uchisaiwaicho, Chiyoda, Tokyo, and international branch offices exist in Washington, D.C., and London. It is a founding member of strategic consortiums related to energy innovation and research; such as JINED, INCJ and MAI.

<span class="mw-page-title-main">Mihama Nuclear Power Plant</span> Nuclear power plant in Fukui Prefecture, Japan

The Mihama Nuclear Power Plant is operated by The Kansai Electric Power Company, Inc. and is in the town of Mihama, Fukui Prefecture, about 320 km west of Tokyo. It is on a site that is 520,000 m2 of which 60% is green space. Mihama - 1 was commissioned in 1970.

<span class="mw-page-title-main">Hamaoka Nuclear Power Plant</span> Nuclear power plant in Omaezaki, Shizuoka Prefecture, Japan

The Hamaoka Nuclear Power Plant is a nuclear power plant in the city of Omaezaki in Shizuoka Prefecture, on Japan's east coast, 200 km south-west of Tokyo. It is managed by the Chubu Electric Power Company. There are five units contained at a single site with a net area of 1.6 km2. The two oldest units were permanently shut down in 2009 and are currently being decommissioned. Three units Hamaoka-3, 4 and 5 are in long-term shutdown since the aftermath of the Fukushima accident in 2011. From 2011 to 2017 these units underwent significant safety upgrades to enhance their resistance against extreme environmental impacts such as earthquakes and tsunamis. In 2014, Chubu Electric submitted an application to resume power generation, but the review by the Nuclear Regulation Authority has been progressing slowly, and is still ongoing as of 2024. A sixth unit was proposed in 2008 but its construction has been deferred indefinitely.

<span class="mw-page-title-main">Onagawa Nuclear Power Plant</span> Nuclear power plant in Japan

The Onagawa Nuclear Power Plant genshiryoku hatsudensho, Onagawa NPP) is a nuclear power plant located on a 1,730,000 m2 site in Onagawa in the Oshika District and Ishinomaki city, Miyagi Prefecture, Japan. It is managed by the Tohoku Electric Power Company. It was the most quickly constructed nuclear power plant in the world.

<span class="mw-page-title-main">Higashidōri Nuclear Power Plant</span>

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<span class="mw-page-title-main">Fukushima Daiichi Nuclear Power Plant</span> Disabled nuclear power plant in Japan

The Fukushima Daiichi Nuclear Power Plant is a disabled nuclear power plant located on a 350-hectare (860-acre) site in the towns of Ōkuma and Futaba in Fukushima Prefecture, Japan. The plant suffered major damage from the magnitude 9.1 earthquake and tsunami that hit Japan on March 11, 2011. The chain of events caused radiation leaks and permanently damaged several of its reactors, making them impossible to restart. The working reactors were not restarted after the events.

<span class="mw-page-title-main">Fukushima Daini Nuclear Power Plant</span> Nuclear power plant in Japan

The Fukushima Daini Nuclear Power Plant Genshiryoku Hatsudensho, Fukushima II NPP, 2F) is a nuclear power plant located on a 150 ha (370-acre) site in the town of Naraha and Tomioka in the Futaba District of Fukushima Prefecture, Japan. The Tokyo Electric Power Company (TEPCO) runs the plant.

<span class="mw-page-title-main">Tōkai Nuclear Power Plant</span> Defunct nuclear power plant in Tokai, Ibaraki Prefecture, Japan (1966-2011)

The Tōkai Nuclear Power Plant was Japan's first commercial nuclear power plant. The first unit was built in the early 1960s to the British Magnox design, and generated power from 1966 until it was decommissioned in 1998. A second unit, built at the site in the 1970s, was the first in Japan to produce over 1000 MW of electricity. The site is located in Tokai in the Naka District in Ibaraki Prefecture, Japan and is operated by the Japan Atomic Power Company. The total site area amounts to 0.76 km2 with 0.33 km2, or 43% of it, being green area that the company is working to preserve.

<span class="mw-page-title-main">Kashiwazaki-Kariwa Nuclear Power Plant</span> Nuclear power plant in Niigata Prefecture, Japan

The Kashiwazaki-Kariwa Nuclear Power Plant is a large, modern nuclear power plant on a 4.2-square-kilometer (1,000-acre) site. The campus spans the towns of Kashiwazaki and Kariwa in Niigata Prefecture, Japan, on the coast of the Sea of Japan, where it gets cooling water. The plant is owned and operated by Tokyo Electric Power Company (TEPCO), and it is the largest nuclear generating station in the world by net electrical power rating.

<span class="mw-page-title-main">Shika Nuclear Power Plant</span> Nuclear power plant in Japan

The Shika Nuclear Power Plant is a nuclear power plant located in the town of Shika, Ishikawa, Japan. It is owned and operated by the Hokuriku Electric Power Company. It consists of two units with a total capacity of 1.746 GW on a site that is 1.6 km2. Both units were put in a temporary shutdown in the wake of the 2011 Fukushima Daiichi nuclear disaster and received safety upgrades to comply with stricter regulatory requirements. As of 2023, Hokuriku aims to restart the plant in 2026.

<span class="mw-page-title-main">Ōi Nuclear Power Plant</span> Nuclear power plant in Fukui Prefecture, Japan

The Ōi Nuclear Power Plant, also known as Oi or Ohi, is a nuclear power plant located in the town of Ōi, Fukui Prefecture, managed by the Kansai Electric Power Company. The site is 1.88 square kilometers. Ōi Units 3 and 4 were taken offline in September 2013. In December 2017 Kansai Electric Power announced that it will decommission reactors no. 1 and 2 because of their age and the difficulty of making safety upgrades within their small containment vessels. Unit 3 was restarted on 14 March 2018, and unit 4 was restarted on 9 May 2018.

<span class="mw-page-title-main">Sendai Nuclear Power Plant</span> Nuclear power plant in Satsumasendai, Kagoshima Prefecture, Japan

The Sendai Nuclear Power Plant is a nuclear power plant located in the city of Satsumasendai in Kagoshima Prefecture. The two 846 MW net reactors are owned and operated by the Kyūshū Electric Power Company. The plant, like all other nuclear power plants in Japan, did not generate electricity after the nationwide shutdown in the wake of the Fukushima Daiichi nuclear disaster in 2011, but was restarted on August 11, 2015, and began providing power to nearby towns again. Sendai is the first of Japan's nuclear power plants to be restarted.

<span class="mw-page-title-main">Fukushima nuclear accident</span> 2011 nuclear disaster in Japan

The Fukushima nuclear accident was a major nuclear accident at the Fukushima Daiichi Nuclear Power Plant in Ōkuma, Fukushima, Japan, which began on 11 March 2011. The proximate cause of the accident was the 2011 Tōhoku earthquake and tsunami, which resulted in electrical grid failure and damaged nearly all of the power plant's backup energy sources. The subsequent inability to sufficiently cool reactors after shutdown compromised containment and resulted in the release of radioactive contaminants into the surrounding environment. The accident was rated seven on the International Nuclear Event Scale by Nuclear and Industrial Safety Agency, following a report by the JNES. It is regarded as the worst nuclear incident since the Chernobyl disaster in 1986, which was also rated a seven on the International Nuclear Event Scale.

<span class="mw-page-title-main">Japanese reaction to Fukushima nuclear accident</span> Japanese reaction to the Fukushima nuclear disaster

The Japanese reaction occurred after the Fukushima Daiichi nuclear disaster, following the 2011 Tōhoku earthquake and tsunami. A nuclear emergency was declared by the government of Japan on 11 March. Later Prime Minister Naoto Kan issued instructions that people within a 20 km (12 mi) zone around the Fukushima Daiichi nuclear plant must leave, and urged that those living between 20 km and 30 km from the site to stay indoors. The latter groups were also urged to evacuate on 25 March.

<span class="mw-page-title-main">National Diet of Japan Fukushima Nuclear Accident Independent Investigation Commission</span> 2011 investigation

National Diet of Japan Fukushima Nuclear Accident Independent Investigation Commission or NAIIC is the commission to investigate the background and cause of Fukushima Daiichi nuclear disaster formed by the statutory law enactment by Diet of Japan on 7 October 2011 and started with the first commissioning meeting was held in Fukushima City, Fukushima Prefecture. The commission is scheduled to issue the report in six months on investigation and to propose the policy to reduce and prevent future accident and reduce damage on the nuclear power plant in Japan.

<span class="mw-page-title-main">Anti-nuclear power movement in Japan</span>

Long one of the world's most committed promoters of civilian nuclear power, Japan's nuclear industry was not hit as hard by the effects of the 1979 Three Mile Island accident (USA) or the 1986 Chernobyl disaster (USSR) as some other countries. Construction of new plants continued to be strong through the 1980s and into the 1990s. However, starting in the mid-1990s there were several nuclear related accidents and cover-ups in Japan that eroded public perception of the industry, resulting in protests and resistance to new plants. These accidents included the Tokaimura nuclear accident, the Mihama steam explosion, cover-ups after accidents at the Monju reactor, and the 21 month shut down of the Kashiwazaki-Kariwa Nuclear Power Plant following an earthquake in 2007. Because of these events, Japan's nuclear industry has been scrutinized by the general public of the country.

<span class="mw-page-title-main">Fukushima nuclear accident (Unit 2 Reactor)</span> One of the reactors involved in the Fukushima nuclear accident

The Fukushima Daiichi reactor, was 1 out of 4 reactors seriously affected during the Fukushima Daiichi nuclear disaster on 11 March 2011. Overall, the plant had 6 separate boiling water reactors originally designed by General Electric (GE), and maintained by the Tokyo Electric Power Company (TEPCO). At the time of the earthquake, Reactor 4 had been de-fueled while 5 and 6 were in cold shutdown for planned maintenance.

<span class="mw-page-title-main">Fukushima nuclear accident casualties</span> Possible casualties and related deaths caused by the Fukushima nuclear disaster

The Fukushima Daiichi nuclear accident genshiryoku hatsudensho jiko) was a series of equipment failures, nuclear meltdowns, and releases of radioactive materials at the Fukushima I Nuclear Power Plant, following the Tōhoku earthquake and tsunami on 11 March 2011. It was the largest nuclear disaster since the Chernobyl disaster of 1986, and the radiation released exceeded official safety guidelines. Despite this, there were no deaths caused by acute radiation syndrome. Given the uncertain health effects of low-dose radiation, cancer deaths cannot be ruled out. However, studies by the World Health Organization and Tokyo University have shown that no discernible increase in the rate of cancer deaths is expected. Predicted future cancer deaths due to accumulated radiation exposures in the population living near Fukushima have ranged in the academic literature from none to hundreds.

<span class="mw-page-title-main">Investigations into the Fukushima nuclear accident</span>

Investigations into the Fukushima Daiichi Nuclear Disaster (or Accident) began on 11 March 2011 when a series of equipment failures, core melt and down, and releases of radioactive materials occurred at the Fukushima Daiichi Nuclear Power Station from the 2011 off the Pacific coast of Tohoku Earthquake and tsunami on the same day.

<span class="mw-page-title-main">Accident rating of the Fukushima nuclear accident</span> INES rating of the Fukushima nuclear disaster

The Fukushima Daiichi nuclear disaster genshiryoku hatsudensho jiko) was a series of equipment failures, nuclear meltdowns, and releases of radioactive materials at the Fukushima I Nuclear Power Plant, following the Tōhoku earthquake and tsunami on 11 March 2011. It is the largest nuclear disaster since the Chernobyl disaster of 1986.

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Further reading