Nov 10 - BBC Monitoring Asia Pacific

Tohoku Electric Power Co. shut down urgently the No. 3 reactor at its Onagawa nuclear power plant in Miyagi Prefecture on Saturday due to a problem when it resumed power generation after a regular inspection, the company said.

There was no radioactive leakage due to the problem, which involved a sharp rise in hydrogen concentration in the pipework for the gaseous waste disposal system, the company said.

It is the first time Tohoku Electric Power has conducted an emergency manual shutdown at one of its nuclear plants.

Originally published by Kyodo News Service, Tokyo, in English 1233 10 Nov 07.

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