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• Chubu Electric Power Company
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• Hamaoka 3 restart

  Chubu Electric Power Company has restarted Hamaoka 3 for the first time since an earthquake of magnitude 7.1 struck near the plant in August. The reactor will not reach full power and enter commercial operation for some time while power levels are slowly increased and final operational checks are carried out. Hamaoka 3 was shut down for regular maintenance work when the earthquake struck. Although there was no notable damage to any of the five reactors at the power plant, Japanese nuclear operators work within strict regulations tightened significantly after a July 2007 earthquake that has put five of the seven reactors at Kashiwazaki Kariwa out of action to this day. Hamaoka 4 is already back in operation, while units 1 and 2 were already permanently shut down at the time of the earthquake. Hamaoka 5 was more affected by the tremors and work to restart it is ongoing. Posted Oct 01 2009, 11:28 AM by World Nuclear News Filed under: Kashiwazaki Kariwa, earthquake, Chubu Electric Power Company, restart, safety, hamaoka 3

• Kashiwazaki-Kariwa restoration work progresses

  [JAIF, 26 November] Work to bring the reactors of Tokyo Electric Power Co's (Tepco's) Kashiwazaki-Kariwa nuclear power plant back into operation is progressing. All seven reactors at Kashiwazaki-Kariwa have stood idle since the plant was struck by an earthquake in July 2007. Seismic reinforcement work at Unit 7 of Tokyo Electric Power Co's (Tepco's) Kashiwazaki-Kariwa nuclear power plant has now been completed and system function tests with fuel loaded in the reactor have begun. System function tests have also started at Unit 6, following the completion of inspections of equipment levels at that unit. Meanwhile, two station transformers and one excitation transformer have been inspected and repaired at Unit 3, where a fire broke out when the quake struck. At the time of the earthquake, three of the seven reactors at Kashiwazaki-Kariwa - units 3, 4 and 7 - were in operation and shut down safely as tremors began. The other units were undergoing periodic inspections at the time. Posted Nov 26 2008, 10:21 AM by World Nuclear News Filed under: Kashiwazaki Kariwa

• Fuel loading starts at Kashiwazaki-Kariwa reactor

  [Denki Shimbun, 11 November] Tokyo Electric Power Co (Tepco) began loading fuel rods into Unit 7 of its Kashiwazaki-Kariwa nuclear power plant on 8 November. All 872 rods are expected to be loaded by 16 November, after which safety confirmation tests will be conducted without starting up the reactor. Reactor systems are being inspected at all seven reactors at Kashiwazaki-Kariwa, which have stood idle since the plant was struck by an earthquake in July 2007. Component-based verification at Unit 7, for which inspection is most advanced, is almost complete. System-based tests, which began on 18 September, require fuel to be loaded into the reactor. These tests could be completed by early December, bringing the reactor one step to closer to being restarted. At the time of the earthquake, three of the seven reactors at Kashiwazaki-Kariwa - units 3, 4 and 7 - were in operation and shut down safely as tremors began. The other units were undergoing periodic inspections at the time. Posted Nov 11 2008, 09:40 AM by World Nuclear News Filed under: Kashiwazaki Kariwa

• Follow-up IAEA mission publishes findings

  A second inspection has confirmed there was no significant damage to safety-related parts of Kashiwazaki Kariwa nuclear power plant after July 2007 earthquake. Posted Feb 27 2008, 12:57 PM by World Nuclear News Filed under: Kashiwazaki Kariwa, IAEA

• Residents relied on TV for details of Kashiwazaki Kariwa quake

  Almost everyone in the Tokyo region of Japan relied on the television for information about the July 2007 earthquake and its effects on the Kashiwazaki Kariwa nuclear power plant, a survey has found. Posted Feb 20 2008, 11:12 AM by World Nuclear News Filed under: Kashiwazaki Kariwa

• Earthquake studies should help standards evolve

  An international team of nuclear safety experts has said that nuclear safety equipment suffered no significant damage at Kashiwazaki Kariwa, and that the lessons of last July's earthquake should be fed back into updated safety standards. Posted Feb 01 2008, 12:24 PM by World Nuclear News Filed under: Kashiwazaki Kariwa

• Tepco counts earthquake costs

  Losses of around ¥155 billion ($1.44 billion) are projected by Tokyo Electric Power Company (Tepco) for FY2007 as the costs of the July 2007 earthquake mount. The figure is over 50% higher than the last. Posted Jan 31 2008, 11:23 AM by World Nuclear News Filed under: Kashiwazaki Kariwa, TEPCO