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Nuclear Accident at the Fukushima Dai-ichi NPP

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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Nuclear Accident at the Fukushima Dai-ichi NPP

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  1. Nuclear Accidentat the Fukushima Dai-ichi NPP June 2, 2011 Embassy of Japan in Bulgaria

  2. 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 M - 5 class 423 times 1. Casualties : over 23,000 Fukushima Dai-ichi TOKYO■ ： 15,217 ： 8,666 ・Dead ・Missing 2. Evacuees : 165,383 (As of May 25th)

  3. Nuclear Reactors near Epicenter of the Earthquake 4 NPP with 14 Units Periodical inspection

  4. Fukushima Dai-ichi NPP Before the Earthquake and Tsunamis After the Earthquake and Tsunamis Unit 6 Unit 5 Unit 1 Unit 2 Unit 3 Unit 4 TEPCO Air Photo Service Inc (Myoko, Niigata Japan)

  5. Fukushima Dai-ichi NPP Cause of the Damage Huge Tsunami Grid Line 46 Meter ①Loss of Off-site Power due to the Earthquake Reactor Building GE Hitachi Nuclear Energy About 40M About 20M Tsunami (estimated 14m) Turbine Building Breakwater Diesel Generator 5.4 ~5.7m Elevation: about 10m ②Diesel Generator Inoperable due to the Tsunami Seawater level All Motion Operated Pumps including ECCS became Inoperable Seawater Pump

  6. Strong support by the international community • Information Sharing • (1) Japan has been providing facility-related and other relevant information to the IAEA. • (2) Nuclear Industry Safety Agency (NISA) provided updates on situations of the • Fukushima Dai-ichi Nuclear Power Station at the IAEA Technical Briefing (21st • March) and at the side event of the Fifth Review Meeting of the Contract Parties to the • Convention on Nuclear Safety (4th April). • IAEA Expert Missions • (1) The IAEA has extended to Japan upon the request of the Government of Japan, in • connection with the incidents involving the nuclear power plants in Japan by • dispatching a series of the IAEA experts to Japan mainly in the field of radiation • monitoring. Such dispatch of experts includes : • (a) Radiation Monitoring Teams, totaling up to 16 members who have been taking • measurements mainly in Fukushima since 19 March; • (b) onemarine expert from the IAEA’s laboratory in Monaco, who boarded Research • Vessel “MIRAI” during 2 -4 April to observe and provide advice for Japanese • experts on their method of collection and analysis of seawater samples; and • (c) A Joint FAO/IAEA Food Safety Assessment Team, who met with local government • officials, farmers etc. in Fukushima, Ibaraki, Tochigi and Gunma prefecture. • (2) In addition, IAEA experts in BWR technology met with Japanese officials and • operators including NISA and the Tokyo Electric Power Company (TEPCO) and • visited the Fukushima Dai-ichi Nuclear Power Plant on 6 April.

  7. Japan’s energy policy after nuclear accident in Fukushima Dai-ichi NPP --Japan’s NPP-- 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).

  8. Japan’s Nuclear Energy Policy after nuclear accident in Fukushima Dai-ichi NPP 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

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