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Kashiwazaki-Kariwa nuclear powerplant out of action for many months due to 74 instances of defective welding

Shoddy welding maintenance work at the Kashiwazaki-Kariwa nuclear power
plant in Niigata Prefecture will push back moves to bring the facility back
online by many months, perhaps longer, its operator Tokyo Electric Power
Co. acknowledged.

The No. 7 reactor has been plagued by problems to do with
installing safeguards against terrorist attacks that required further work
and a new round of inspections by the Nuclear Regulation Authority, the
nation’s nuclear watchdog body.

TEPCO announced Dec. 24 that it had
uncovered 74 instances of defective welding that is essential to safe
operations of the nuclear reactor. The utility said it had been tipped off
anonymously on several occasions since March about shoddy welding work done
by a subcontractor. In its latest announcement, TEPCO acknowledged the
problem and said welding would have to be redone at 1,200 or so sections, a
process that will likely take until next summer.

 Asahi Shimbun 25th Dec 2021

 https://www.asahi.com/ajw/articles/14510525

December 27, 2021 - Posted by | Japan, safety

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