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» Reactors in Hokkaido needs construction work to pass the new regulations

One of the reactors owned by Hokkaido Electric Power Co. doesn’t comply with the new nuclear regulations and will have to undergo construction work to come up to code, regulators said.

The work required for the No. 3 unit at the Tomari power plant “will not finish in several months,” , indicating that the Nuclear Regulation Authority’s safety assessment will be protracted and the reactor’s return to operations could be facing a significant delay.

The problem with the No. 3 reactor is in the emergency system that cools the interior of the reactor’s primary containment vessel by spraying water from a ring-shaped pipe.

The reactor only has one pipe, but the NRA said in a meeting in December with Hokkaido Electric Power officials that they need a backup system in case the pipe should break and can’t function.

Hokkaido Electric Power has insisted that such an event is extremely unlikely, but the NRA rejects this claim, saying the new safety criteria “should be strictly applied.”

 

<Media Report>
Hokkaido reactor needs construction work to satisfy new regulations (Japan times)


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