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information about Fukushima published in English in Japanese media info publiée en anglais dans la presse japonaise

Probing containment vessel soon

April 26, 2014


Detailed containment vessel probe to begin soon



The operator of the crippled Fukushima Daiichi nuclear power plant is planning a more detailed probe into the containment vessels of the 3 damaged reactors.

Tokyo Electric Power Company hopes to learn more details to assist with the retrieval of melted fuel.

The operator plans to fill the containment vessels of reactors 1, 2 and 3 with water. This will help to shield workers from radiation as they attempt to retrieve the fuel. The utility is now checking the vessels for necessary repair work to prevent water leakage.

Earlier in April at the No. 3 reactor, remote-controlled cameras detected water pooled below a metal scaffold inside an adjoining room. Officials have also confirmed the sound of water flowing in the room. But the exact source is still not clear.

As early as May, TEPCO will begin using a special endoscopic camera to inspect areas below the scaffold. One area of interest is the section that connects the adjoining room with the containment vessel. The operator believes contaminated water came into the room through this connection.

Robots will be used to pinpoint breaches in the No.1 and 2 reactors where contaminated water has been pouring in. The probe into reactor 1 will focus on checking the bottom of the containment vessel. The reactor 2 probe will center on the donut-shaped suppression chamber at the bottom of the containment vessel.

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