Fukushima reactor cooling system stops following quake & tsunami




Cranes are seen at the No. 3 reactor building, next to the No.4 building, at Tokyo Electric Power Co.'s (Tepco) tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima Prefecture. © Kimimasa Mayama
Cranes are seen at the No. 3 reactor building, next to the No.4 building, at Tokyo Electric Power Co.'s (Tepco) tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima Prefecture. © Kimimasa Mayama / Reuters
The cooling system of the third reactor at the Fukushima nuclear power plant has stopped circulating water following a powerful 7.3 offshore earthquake. TEPCO said it managed to restart the system some 90 minutes after the failure.
The cooling system servicing the Unit 3 spent fuel pool was not able to circulate water to cool the nuclear fuel because of a broken pump, according to the Nuclear Regulatory Agency.
The temperature in the pool went up to 28.7 degrees Celsius. It takes up to seven days for temperatures to rise to 65 degrees Celsius, which is the upper operational limit, Japan’s national nuclear agency said.

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