Japan

Fukushima Nuclear Accident Update Log Updates of 20 April 2011

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→ Summary of Reactor Status

On Wednesday, 20 April 2011, the IAEA provided the following information on the current status of nuclear safety in Japan:

  1. Current Situation

Overall, the situation at the Fukushima Daiichi nuclear power plant remains very serious, but there are early signs of recovery in some functions, such as electrical power and instrumentation.

Changes to Fukushima Daiichi Nuclear Power Plant Status

The IAEA receives information from a variety of official Japanese sources through the Japanese national competent authority, the Nuclear and Industrial Safety Agency (NISA). Additional detail is provided in the IEC status summary with information received by 07:00 UTC on 20 April 2011.

Management of On-Site Contaminated Water

TEPCO has provided a plan to NISA for the transfer of highly contaminated water from the basement of the turbine building of Unit 2 to the main building of the radioactive waste treatment facilities, to reduce the risk of this stagnant waste water being discharged to the environment. Measures to ensure that the radioactive waste treatment facility is watertight were completed on 18 April and the transfer of water from Unit 2 was commenced on 19 April.