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Corporate Information

 
Press Release (Mar 12,2012)
Lack of Plant Data of Fukushima Daiichi and Daini Nuclear Power Station at the time of Tohoku-Chihou-Taiheiyo-Oki Earthquake

On April 25, 2011, we received the instruction notice*, "Instruction to report based on Article 67-1 of Act on the Regulation of Nuclear Source Material, Nuclear Fuel Material and Reactors" from Nuclear and Industrial Safety Agency (NISA). After that, based on the instruction notice, we reported the plant data of Fukushima Daiichi Nuclear Power Station at the time of the earthquake to NISA on May 16, 2011. Besides, because we found that seawater had been injected to the Unit 1 of Fukushima Daiichi Nuclear Power Station since March 12, 2011, and there were some errors in the contents of report, we revised the report and submitted the revised one to NISA on June 13, 2011. (Previously announced on April 26, May 16 and June 13, 2011) Because we confirmed the lack of documents regarding some chart data, etc. of Unit 1 - Unit 6 except Unit 4 of Fukushima Daiichi Nuclear Power Station, we arranged the documents again and reported to NISA today. Besides we already announced the plant data, etc. of Fukushima Daini Nuclear Power Station taken at the time of Tohoku-Chihou-Taiheiyo-Oki Earthquake and the tsunami occurred after the earthquake (previously announced on August 10, 2011). However, because we confirmed the lack of documents regarding some alarm records (shown in our homepage) of Unit 1 and Unit 3 of Fukushima Daini Nuclear Power Station, we announced this information as well. End ○Attachment ·Confirmation results of lack of plant data of Fukushima Daiichi and Daini Nuclear Power Stations at the time of Tohoku-Chihou-Taiheiyo-Oki Earthquake (PDF 54.0KB) ·Plant data of Fukushima Daiichi a Nuclear Power Stations at the time of Tohoku-Chihou-Taiheiyo-Oki Earthquake ·Plant data of Fukushima Daini a Nuclear Power Stations at the time of Tohoku-Chihou-Taiheiyo-Oki Earthquake The aforementioned attachment is only available in Japanese. We apologize for any inconvenience this may cause. *Instruction notice Instruction to report based on Article 67-1 of Act on the Regulation of Nuclear Source Material, Nuclear Fuel Material and Reactors No.1: April 24th, 2011 April 25th, 2011 Taking into consideration the roadmap towards restoration from the accident at Fukushima Daiichi Nuclear Power Station which you have formulated, we hereby instruct you based on Article 67-1 of Act on the Regulation of Nuclear Source Material, Nuclear Fuel Material and Reactors (Act No. 166 of 1957) to report the following items in a rapid manner in order to take further appropriate emergent steps. In addition, you have to ensure that the workers are not exposed to more than the minimum amount of radiation while collecting the materials. In case it is expected that the prompt report is difficult because, for example, materials to be reported are in the areas filled with highly concentrated radioactive materials in the air and are therefore hard to collect, you have to check how the materials are stored now, the prospect for the expected timing of the report, or any other related and necessary conditions and report the results in a rapid manner. If you disagree with this disposition, you may raise an objection against the Minister of Economy, Trade and Industry within sixty days from the day following the date when you learn that the disposition was made under Article 6 of Administrative Dissatisfaction Inspection Act (Act No. 160 of 1962). However, you may not raise an objection after one year has passed since the day following the date of the disposition even if it falls within sixty days from the day following the date when you learn that the disposition was made. Based on a provision of Administrative Case Litigation Act (Act No. 139 of 1962), you may file an action for cancellation of the disposition against the national government (representative; the Minister of Justice) after a decision is made on the aforementioned objection, within six months from the day following the date when you learn that the decision was made. However, you may not file an action for cancellation after one year has passed since the day following the date of the decision on the objection even if it falls within sixty days from the day following the date when you learn that the decision was made. If one of the following events happens, you may file an action for cancellation of the disposition without waiting for a decision on the aforementioned objection: (i) no three months have passed since the day following the date when you raised the objection, (ii) there is an urgent necessity in order to avoid any considerable damage that would be caused by the original administrative disposition, the execution of the original administrative disposition or the continuation of any subsequent procedure, and (iii) there are any other justifiable grounds not to obtain an administrative decision. ○You have to report the following items among the operation records (including the ones that are made immediately after the occurrence of the Tohoku-Chihou-Taiheiyou-Oki-Earthquake in 2011) prescribed in Article 7-1 of Regulations Concerning the Installment, Operation, etc. of Practical Generation Reactors (The Ministry of International Trade and Industry Order No. 77 of 1978) and accident records of the nuclear reactor facilities etc. in connection with this accident ·The water level inside the Nuclear Reactor Pressure Vessel ·The pressure inside the Nuclear Reactor Pressure Vessel ·The temperature inside the Nuclear Reactor Pressure Vessel ·The pressure inside the drywell of the Nuclear Reactor Containment Vessel ·The pressure inside Pressure Suppression Chamber of the Nuclear Reactor Containment Vessel ·The water level inside Pressure Suppression Chamber of the Nuclear Reactor Containment Vessel ·The temperature inside Pressure Suppression Chamber of the Nuclear Reactor Containment Vessel ·The temperature inside the Nuclear Reactor Containment Vessel ·Density of gas inside the Nuclear Reactor Containment Vessel ·The temperature inside the Spent Fuel Pool ·The volume of flow of the Emergency Core Cooling System ·The density of radioactive materials at the exhaust outlet of radioactive wastes and the emission monitoring facilities ·The contents of the alarms set off by the alarming devices ·The track record of Isolation Cooling Condenser System ·The operation track record of the Reactor Core Isolation Cooling System (RCIC) ·The operation track record of the High Pressure Core Injection System ·The opening and closing track record of the Safety Relief Valves ·The opening and closing track record of the Nuclear Reactor Containment Vessel Ventilation ·The track record of power securement and power restoration ·The operation track record of substitutional measures of water injection such as fire pumps and seawater injection, etc. ·The track record of the treatment of accumulated water in the Turbine Buildings, the Vertical Shaft, and the Duct for the outside
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