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Tōkai Nuclear Power Plant

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waves could be as high as 6 to 7 metres. Japan Atomic Power changed its wave level assumption to 5.7 meters. Reconstruction works to raise the height of the 4.9-metre protection around the plant to 6.1 meters were started in July 2009, in order to protect the seawater pumps intended to cool an emergency diesel generator. Although most of the work was completed by September 2010, cable holes in the levee were still not fully covered. This work was scheduled to be completed around May 2011. Additions to the
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could not rule out the possibility that the plants were vulnerable. Other nuclear power stations declared that the active faults near their nuclear plants would not move at the same time, and even when this would happen, the impact would be limited. NISA would look into the evaluation of active faults done by the plants.
601:. It was reported on 14 March that a cooling system pump for the Number 2 reactor had stopped working. Japan Atomic Power Company stated that there was a second operational pump and that cooling was working, but that two of three diesel generators used to power the cooling system were out of order. 621:
off the coast of northern Japan in the Pacific Ocean, and in this way a much bigger earthquakes could be triggered, than the plants were designed to withstand at the time they were built. In March 2012, the Tokai 2 Plant in Ibaraki Prefecture and the Tomari power facility in Hokkaido, said that they
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When the tsunami did hit the Tokai plant in March 2011, the waves were 5.3 to 5.4 metres in height, higher than earlier estimations but still 30 to 40 centimetres lower than the most recent estimation. The Tokai plant suffered a loss of external power-supply. The levee was overrun, but only one of
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In 2011 and 2012, about 100,000 signatures against the resumption of the plant's operation which shutdown due to the 2011 earthquake, were submitted to Ibaraki Governor Masaru Hashimoto. The petition urged the prefectural government not to allow the Tokai power station to resume operation, saying,
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In 2002, an evaluation technology adopted by the Japan Society of Civil Engineers had determined that the site of the plant could experience tsunami waves as high as 4.86 metres. The government of Ibaraki prefecture published their own calculations in October 2007, where they estimated that such
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In March 2021, the Mito District Court ordered the Tokai 2 reactor suspend operations, following the request of 224 plaintiffs. The plaintiffs, residents of Ibaraki Prefecture and the Tokyo metropolitan area, filed a lawsuit in 2012 against the operator. One of the key contentions was the
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and was the first nuclear reactor built in Japan to produce over 1,000 MW of electricity. By some formalities in the paperwork, the unit is technically separate from the rest of the nuclear facilities in Tokai, but it is managed with the rest of them and even shares the same front gate.
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technology for dual-use. Unit 1 is the first full-size nuclear reactor to be decommissioned in Japan. The experience in decommissioning this plant is expected to be of use in the future when more Japanese plants are decommissioned. Below is a brief time-line of the process:
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After the disaster in Fukushima, a stress-test was ordered by the Japanese government, since an investigation of the electrical installations of the Tokai 2 reactor revealed that they did not meet the earthquake-resistance standards set by the government.
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The Tokai nuclear complex also contained a reprocessing plant built in 1971 that operated from 1981 until 2006. In 2014 it was decided to permanently cease operations because upgrades to match the post-Fukushima safety requirements were uneconomical.
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Construction work on additional safety measures, including a 1.7 km sea wall to protect from possible tsunamis, was originally scheduled to be completed in March 2021. In 2020 it was announced this was delayed until December 2022.
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According to the industry ministry, a total of 11 nuclear reactors automatically shut down at the Onagawa plant, the Fukushima No. 1 and No. 2 plants and the Tokai No. 2 plant after the strongest recorded earthquake in the country's
2193: 659:, that the Tokai 2 reactor situated 110 kilometers from Tokyo should be decommissioned, because the reactor was more than 30 years old, and the people had lost confidence in the nuclear safety commission of the government. 2183: 987: 555:. In March 1997 a fire broke out in the bituminisation facility where spent fuel is encased in molten asphalt (bitumen) for storage. The event exposed more than 20 people to radiation but there were no direct fatalities. 629:
discovered that the wrong fuel rod position data had been used in safety evaluations since the plant had been built, consequent to a change to fuel rod specifications during the design and construction process.
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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
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Japan Atomic Power said Monday that the cooling process was working at its Tokai No.2 nuclear power plant's reactor although two of the three diesel power generators used for cooling were out of order.
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figure. The operator defended its basis seismic ground motion figure as 50 percent higher than the average. The plaintiffs contended that the figure should be four times as high as the current figure.
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approved a 20-year extension. Following that, the operator will need the consent of the Ibaraki prefectural government, as well as six local municipalities, including the village of Tokai.
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three seawater pumps failed, and the reactors could be kept stable and safe in cold shutdown with the emergency diesel generator cooled by the two remaining seawater pumps.
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The second more serious accident occurred on 30 September 1999 when workers, who were not properly trained, brought too much highly enriched uranium together causing a
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Directory of National Competent Authorities' Approval Certificates for Package Design, Special Form Material and Shipment of Radioactive Material
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Two separate nuclear accidents occurred in the 90s at the Tokai plant and nearby reprocessing facility, both in Tokai village
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Seismic research in 2011 showed that the March 11th quake was caused by the simultaneous movement by multiple
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was Japan's first commercial nuclear power plant. The first unit was built in the early 1960s to the British
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that raised it to a height of 6.1 meters were completed on 9 March, just two days before the
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Please help update this article to reflect recent events or newly available information.
2440: 1129: 380: 314: 188: 2470: 1998: 1934: 1928: 1918: 1908: 1194: 865: 821: 1161:"Ibaraki nuclear plant used erroneous fuel rod data for over 40 years, utility says" 652: 306: 2509: 1955: 1940: 1888: 1878: 2374: 1893: 1330: 1227: 1148: 1117: 1110: 923: 783: 201: 1022:"Cooling system pump stops at Tokai No.2 plant-Kyodo; Energy & Oil; Reuters" 1903: 1867: 562:. A total of 119 people were exposed to radiation of which 2 were fatal cases. 211: 2544: 1923: 1898: 1756: 1335: 1186: 869: 717: 640: 71: 58: 2455: 2445: 2176: 1883: 689: 656: 618: 16:
Defunct nuclear power plant in Tokai, Ibaraki Prefecture, Japan (1966-2011)
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Earthquake report 362: 2 plants to undergo checks for multiple faults
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Report of Electric Generating Plant Environmental Activities for 2010
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December 2001: Decommissioning begins, spent fuel pool is cleaned
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New levee prevents total power loss at nuclear plant in Ibaraki
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Tsutomu Nakajima, Kazukiyo Okano and Atsushi Murakami (1965).
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On 11 October 2011 Tatsuya Murakami, the mayor of the village
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5 yen coin § Use in nuclear accident investigation
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This reactor was built based on the British-developed
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The plant has been not operational since the reactor
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Lists of nuclear disasters and radioactive incidents
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appropriateness of the Japan Atomic Power's seismic
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2003: Turbine room and electric generator taken down
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Nuclear power stations using boiling water reactors
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March 2001: Last of the nuclear fuel moved off-site
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Archived from 1051:Takenaka, Kiyoshi (13 March 2011). 775:JAPC Official Document (Japanese). 339: 13: 2451:Japan Trench Fast Drilling Project 2053:Fukushima Daiichi nuclear disaster 2030:2011 Tōhoku earthquake and tsunami 1201:from the original on 18 March 2021 956:from the original on 20 March 2021 726:Fukushima Daiichi nuclear disaster 655:, said in a meeting with minister 595:2011 Tōhoku earthquake and tsunami 572:2011 Tōhoku earthquake and tsunami 512:2011: Reactor itself is dismantled 334:2011 Tōhoku earthquake and tsunami 14: 2582: 2529:Nuclear and radioactive incidents 1773:Japan Atomic Energy Agency (JAEA) 1709:Nuclear Regulation Authority(NRA) 1272: 646: 2516: 2490: 1980: 1969: 1968: 1795:Japan Electric Association(JEA) 1606:prototype fast (breeder) reactor 1277: 710: 696: 682: 494:March 31, 1998: Operations cease 445: 430:Safety upgrade since March 2011 138:Nuclear power station 27: 2561:Nuclear power stations in Japan 2503:Seismicity of the Sanriku coast 1254: 1232: 1213: 1179: 1134: 1122: 1100: 1044: 1028:. 13 March 2011. Archived from 1014: 994:. 12 March 2011. Archived from 608: 295:Tōkai genshi-ryoku hatsuden-sho 980: 968: 938: 909: 849: 815: 769: 731:List of boiling water reactors 634:Mito District Court injunction 1: 2551:1960s establishments in Japan 2436:Impact on video game industry 2237:Sayonara Nuclear Power Plants 1946:Sayonara Nuclear Power Plants 762: 599:to be shut down automatically 2162:Okawa School tsunami tragedy 627:Nuclear Regulation Authority 7: 2349:Yuzuru Hanyu Notte Stellata 1837:Tokaimura nuclear accidents 756:Rokkasho Reprocessing Plant 675: 585:2011 earthquake and tsunami 541:Tokaimura nuclear accidents 294: 212:Annual net output 10: 2587: 2227:Project Sunshine for Japan 1914:Project Sunshine for Japan 1832:Fukushima nuclear disaster 1752:Japan Nuclear Fuel Limited 746:Tokaimura nuclear accident 538: 529: 412:GE, GEC, Hitachi, Shimizu 323:Japan Atomic Power Company 132:Japan Atomic Power Company 2484: 2428: 2387: 2357: 2315: 2306: 2249: 2219: 2154: 2108: 2045: 2036: 1964: 1855: 1824: 1787: 1765: 1729: 1696: 1689: 1664: 1648: 1627: 1582: 1555: 1532: 1514: 1496: 1468: 1450: 1432: 1404: 1381: 1363: 1353: 1344: 1326: 1284:Tōkai Nuclear Power Plant 1128:NHK-world (1 March 2012) 927:(in Japanese). 2012-02-14 704:Nuclear technology portal 516: 454:This section needs to be 436: 288: 283:Tōkai Nuclear Power Plant 268: 258: 228: 223: 210: 200: 187: 180:Units decommissioned 167: 163: 158: 150: 142: 137: 127: 110: 95: 87: 50: 42: 38: 26: 22:Tōkai Nuclear Power Plant 21: 2329:Operation Pacific Assist 1874:Japanese Communist Party 1842:Mihama nuclear accidents 917: 2293:(7.1, 13 February 2021) 2287:(6.9, 22 November 2016) 1951:Social Democratic Party 1799:membership organization 797:"Reactors in operation" 353:Average electric power 330:shut down automatically 321:and is operated by the 189:Nameplate capacity 116:July 25, 1966 99:March 1, 1961 96:Construction began 2461:869 Sanriku earthquake 2281:(7.3, 7 December 2012) 1747:Mitsubishi FBR Systems 1320:Nuclear power in Japan 1219:JAIF (12 October 2011) 577:In November 2018, the 549: 482: 172:Units operational 72:36.46639°N 140.60667°E 2344:Reconstruction Agency 2323:Humanitarian response 2080:Fukushima Daini plant 1766:Research institutions 1676:research fast reactor 1286:at Wikimedia Commons 1250:on February 12, 2012. 918:防波壁完成、震災2日前…東海第二原発守った 837:(1). Fuji Electric Co 523:Boiling Water Reactor 480: 365:Commercial operation 359:Construction started 159:Power generation 151:Reactor supplier 2496:Japanese earthquakes 2466:2011 local elections 2299:(7.0, 20 March 2021) 2275:(6.6, 11 April 2011) 831:Fuji Electric Review 560:criticality accident 202:Capacity factor 112:Commission date 2336:Operation Tomodachi 2269:(7.1, 7 April 2011) 2263:(7.3, 9 March 2011) 1140:JAIF (1 March 2012) 952:. 7 November 2018. 535:Tokaimura Accidents 224:External links 77:36.46639; 140.60667 68: /  2441:No.18 Kyotoku-maru 2365:Wrestling in Japan 2109:Sequence of events 1649:Under construction 1424:Kashiwazaki-Kariwa 1226:2013-05-17 at the 1147:2013-05-20 at the 1116:2011-07-07 at the 1063:on January 6, 2016 872:. INIS RN:29059902 803:. 31 December 2009 782:2011-07-21 at the 667:Reprocessing plant 483: 427:November 28, 1978 395:November 10, 1965 362:First criticality 315:Ibaraki Prefecture 2538: 2537: 2471:Miracle Pine Tree 2383: 2382: 2245: 2244: 2136:Radiation effects 2095:Higashidori plant 1996: 1995: 1935:Rokkasho Rhapsody 1919:Reiwa Shinsengumi 1909:Kiyoshiro Imawano 1847:List of incidents 1820: 1819: 1697:Regulatory bodies 1685: 1684: 1578: 1577: 1414:Fukushima Daiichi 1282:Media related to 1197:. 18 March 2021. 1195:The Asahi Shimbun 1167:. 23 January 2018 950:sightlineu3o8.com 896:world-nuclear.org 475: 474: 434: 433: 279: 278: 143:Reactor type 2578: 2520: 2519: 2510:List of tsunamis 2494: 2493: 2476:Shinkansen Relay 2313: 2312: 2291:Fukushima, Japan 2285:Fukushima, Japan 2273:Fukushima, Japan 2043: 2042: 2023: 2016: 2009: 2000: 1999: 1984: 1983: 1972: 1971: 1956:Jinzaburo Takagi 1941:Ryuichi Sakamoto 1889:Mizuho Fukushima 1879:Genpatsu-shinsai 1694: 1693: 1361: 1360: 1351: 1350: 1313: 1306: 1299: 1290: 1289: 1281: 1266: 1265: 1258: 1252: 1251: 1236: 1230: 1217: 1211: 1210: 1208: 1206: 1183: 1177: 1176: 1174: 1172: 1157: 1151: 1138: 1132: 1126: 1120: 1104: 1098: 1097: 1095: 1093: 1082: 1076: 1075: 1070: 1068: 1059:. 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Index

Tōkai Nuclear Power Plant
36°27′59″N 140°36′24″E / 36.46639°N 140.60667°E / 36.46639; 140.60667
Commission date
Japan Atomic Power Company
Nameplate capacity
MW
Capacity factor
Annual net output
GW·h
www.japc.co.jp/tokai/english/plant_guide/tokai02.html
Related media on Commons
edit on Wikidata
Magnox
Tokai
Naka District
Ibaraki Prefecture
Japan
Japan Atomic Power Company
shut down automatically
2011 Tōhoku earthquake and tsunami
Magnox
GCR
BWR/5

Magnox
Boiling Water Reactor
Tokaimura nuclear accidents
criticality accident
seawall
2011 Tōhoku earthquake and tsunami

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