JAPAN | TEPCO: Nuclear fuel pool cooled to stable level

Posted on July 2, 2011


JAPAN | NHK | Saturday, July 02, 2011 13:22 +0900 (JST)

The operator of the crippled Fukushima Daiichi nuclear plant has reported progress in its work to stabilize the facility’s spent fuel rods.

Tokyo Electric Power Company says the cooling system that began operating at the No.3 reactor on Thursday has brought the temperature of the nuclear fuel storage pool of the reactor to just below 40 degrees Celsius from the previous level of 62 degrees.

TEPCO says the temperature of the pool was 39.9 degrees as of 5 AM on Saturday.

As cooling has progressed faster than initially expected, TEPCO says the temperature will likely stabilize at around 30 degrees in a few days. The temperature of the spent fuel pool of the No.2 reactor has already declined to that level.
As for the No.1 and No.4 reactors, the utility plans to begin operating cooling systems by the end of this month. Until then, the company needs to inject cooling water on a regular basis.

TEPCO is concerned about possible difficulty in installing the cooling system at the No.4 reactor. A hydrogen explosion in March damaged piping necessary for the system and debris left there is hampering construction work.

The company says there may be a delay in its installation plan.

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