Toshiba suspected of falsifying more flow meter data for reactor.
Electronics maker Toshiba Corp. might have again falsified data on three coolant flow meters for a reactor at the Kashiwazaki-Kariwa nuclear power plant operated by Tokyo Electric Power Co., in addition to one at the utility firm's Fukushima No. 1 power plant, government nuclear safety inspectors said Friday.
The Nuclear and Industrial Safety Agency, an organization under the Ministry of Economy, Trade and Industry, said it has received a report from Toshiba that it might have made the fabrication.
In late January, TEPCO, Japan's largest power utility company, had announced that Toshiba, a key manufacturer of nuclear power facilities in Japan, had falsified coolant flow meter data for the No. 6 reactor at the Fukushima No. 1 plant in Fukushima Prefecture.
In related development Friday, officials from the Nuclear and Industrial Safety Agency inspected Toshiba's Keihin plant in Yokohama's Tsurumi Ward to check details about the data falsification.
TEPCO said the data fabrication had posed no problem in legal terms or in the safe operation of the reactors.
The Toshiba-supplied meters at the Fukushima No. 1 plant were found to have failed to meet accuracy requirements as specified by the power company. The data on the three meters at the Kashiwazaki-Kariwa plant might have been fabricated similarly, TEPCO said.
The power utility company said it confirmed the data fabrication at the Fukushima No. 1 plant after receiving a document from an in-house whistle-blower in September 2005 claiming Toshiba supplied the flow meter with fabricated data. The flow meter measures coolant flows at the reactor.
The Kashiwazaki-Kariwa nuclear power plant, located in the city of Kashiwazaki and the village of Kariwa in Niigata Prefecture on the Sea of Japan coast, has seven reactors and is known as the world's largest nuclear power plant with a total power output capacity of 8.2 million kilowatts.
The Fukushima No. 1 nuclear power plant, located in the towns of Okuma and Futaba in Fukushima Prefecture facing the Pacific, has six reactors with a total power output capacity of 4.7 million kw. The No. 6 reactor began operation in October 1979. TEPCO operates another nuclear power plant in Fukushima Prefecture, which is the Fukushima No. 2 nuclear plant whose four reactors have a total power output capacity of 4.4 million kw.
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|Publication:||Japan Energy Scan|
|Date:||Feb 13, 2006|
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