TEPCO halts reactor’s cooling system at Fukushima Daini after electrical sparks observed

Published: July 7th, 2011 at 10:43 am ET
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Tepco halts cooling system at nuclear plant after sparks-Kyodo, Reuters, July 7, 2011:

The operator of Japan’s Fukushima Daini nuclear power plant, located near the tsunami-crippled Daiichi plant, on Thursday halted the cooling system at one of its reactors after electrical sparks were detected, Kyodo news agency reported. [...]

Fukushima Daini Nuclear Power Station: Units 1 to 4: shutdown due to the earthquake, TEPCO, July 7, 2011:

At 2:05 pm on July 7, we received a report as follows: “Workers from our subcontractor were checking the power board for the High Pressure Core Spray System located at B1, auxiliary building to R/B, Unit 1. They found sparks from a circuit breaker in that power board.” At 2:30 pm on the same day, TEPCO employees checked the power board. From now on, we will open the connecting circuit breaker that supplies power to the power board and investigate the cause. In connection with this, we are planning to temporarily stop the Residual Heat Removal System Pump (B).

h/t Risabee

Published: July 7th, 2011 at 10:43 am ET
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