HW #4 EE444 - F18 Student : Gayatri Mhatre USC ID : 3975066298 Ans 1) Based on the discussion on Fukushima accident in 2011, please write your opinion on how such accidents should be avoided. • Friday 11 March 2011 The Great East Japan Earthquake of magnitude 9.0 at 2.46 pm did considerable damage in the region with the Tsunami contributing even more. It was a rare and complex double quake giving a severe duration of about 3 minutes • Considerable Damage : The land mass was affected in geographical aspects, buildings collapsed and destroyed with a human death toll of 19,000 • Eleven reactors at four nuclear power plants in the region were operating at the time • All operating units shut down when quake hit automatically which were Tokyo Electric Power Company's (Tepco) Fukushima Daiichi 1, 2, 3, and Fukushima Daini 1, 2, 3, 4, Tohoku's Onagawa 1, 2, 3, and Japco's Tokai, total 9377 MWe net.  • Fukushima Daiichi units 4, 5&6 were not operating at the time, but were affected. The main problem initially centred on Fukushima Daiichi units 1-3. Unit 4 became a problem on day 5 • Inspection revealed no significant damage to any from the earthquake. • The 15-metre tsunami disabled the power supply and cooling of three Fukushima Daiichi reactors, causing a nuclear accident on 11 March 2011. All three cores largely melted in the first three days • The Fukushima Daiichi Nuclear Power Plant accident was rated 7 on the INES scale •
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- Spring '14
- Nuclear Fission, Energy development, Electricity generation, Fukushima Daiichi