Japanese regulators inspect Fukushima Daiichi Unit 1 isolation condenser

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Fukushima Daiichi Unit 1

Officials from Japan’s Nuclear Regulation Authority inspected the Unit 1 reactor building at Fukushima Daiichi on Friday to inspect the possibility that critical components were damaged by the earthquake on March 11th, 2011.  The NRA decided to further study the cause of the nuclear disaster and how it evolved earlier this month, after a commission appointed by parliament suggested that the quake may have damaged equipment at Unit 1.  The report released by the parliament commission noted that several workers on the fourth floor of the Unit 1 reactor witnessed a water leak after the earthquake, but the parliamentary investigatory body was misled by TEPCO about the state of the building and urged not to conduct an on-site investigation.

According to the regulatory agency, the officials investigating on the fourth floor of the reactor building received a dose of less than 5 millisieverts in 15 minutes.  The investigatory team recorded video of their inspection of the piping of the emergency cooling system called an isolation condenser and will release the details of their survey at an expert meeting which will be held in June.  If necessary the investigatory team will conduct additional field research in the future.

Source: JiJi Press

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