JAPAN | Workers enter No. 4 reactor building

Posted on June 30, 2011


JAPAN | NHK | Thursday, June 30, 2011 20:04 +0900 (JST)

Tokyo Electric Power Company says debris scattered inside the No. 4 reactor building at the Fukushima Daiichi nuclear plant is posing an obstacle to work to bring the crippled reactor under control.

Workers entered the fifth floor of the building on Wednesday for the first time since an explosion on March 15th.

Photos taken by the workers show that most of the ceiling, except for a small part of the framework, has collapsed. Debris, steel frames, and other various things blown by the force of the explosion are scattered all over the floor.

The radiation level inside the building was less than one millisievert per hour, which TEPCO says is permissible for workers to carry out operations there.

The utility plans to install a circulatory system that will cool and circulate water inside the reactor’s spent fuel storage pool. But it says one of the valves necessary to operate the system is covered by debris.

TEPCO says it will consider whether to remove the debris or attempt to work around the debris.

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