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Japan – Radiation high near suppression chambers

Thursday, March 15, 2012

Laaska News  Mar. 15, 2012

High levels of radiation have been detected near suppression chambers of 2 of the reactors at the Fukushima Daiichi nuclear plant.

The radiation levels are too high for workers to continue inspections.

Decommissioning the plant’s crippled reactors involves filling the reactors and their containment vessels with water and extracting melted fuel.

To do this, workers must pinpoint and repair damage to the containment vessels and the suppression chambers.

On Wednesday, for the first time since the accident a year ago, Tokyo Electric Power Company sent workers to the basement of the No.2 and No.3 reactor buildings to examine the suppression chambers. A total of 6 employees entered.

At the No.2 reactor building, workers opened the door to the suppression chamber and detected a maximum radiation of 160 millisieverts per hour.

The door to the chamber at the No.3 reactor had been damaged and could not be opened. The maximum radiation outside the door was 75 millisieverts per hour.

Tokyo Electric says robots are needed for future inspections because the radiation levels at the 2 reactors are too high for workers to carry out repairs.

Tokyo Electric has released video images of suppression chambers of the No.2 and 3 reactors at the Fukushima plant.

The video was taken on Wednesday when workers entered the basement of the reactor buildings.

The door to the suppression chamber at the No.3 reactor building could not be opened, as it had been damaged possibly due to a hydrogen explosion.

At the No.2 reactor building, workers were able to open the door to the suppression chamber and measure radiation, but the video images were blurry.

NHK.

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Laaska News.

http://www.laaska.wordpress.com

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