Nuclear Accident at the Fukushima Dai-ichi NPP. June 2, 2011 Embassy of Japan in Bulgaria. Japan Faces an Unprecedented Challenge (Enormous Earthquake, Tsunamis and Nuclear Accident). Earthquakes: M - 9.0 quake (March 11) M - 7 class 5 times M - 6 class 72 times
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June 2, 2011
Embassy of Japan in Bulgaria
(Enormous Earthquake, Tsunamis and Nuclear Accident)
Earthquakes: M - 9.0 quake (March 11)
M - 7 class 5 times
M - 6 class 72 times
M - 5 class 423 times
1. Casualties : over 23,000
2. Evacuees : 165,383
(As of May 25th)
4 NPP with 14 Units
Before the Earthquake and Tsunamis
After the Earthquake and Tsunamis
Air Photo Service Inc (Myoko, Niigata Japan)
Cause of the Damage
①Loss of Off-site Power due to the Earthquake
GE Hitachi Nuclear Energy
Tsunami (estimated 14m)
②Diesel Generator Inoperable due to the Tsunami
All Motion Operated Pumps including ECCS became Inoperable
Total 54 reactors in 18 NPP
(as of May 10)
17 reactors are generating normally.
・15 reactors suspended by the earthquake.
・3 reactors in Hamaoka NPP are asked to stop
generating by the government.
・19 reactors are now in regular maintenance
(once a year).
Statement of Prime Minister NAOTO KAN at G8 summit
・drawing on the lessons from the nuclear accidents
---not only the technical aspects, but comprehensively review such aspects as human resources, organizations, institutions as well as safety culture.
→achieve the highest standard of nuclear safety