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Switzerland concerned over possible abnormalities in AREVA-supplied nuclear reactor components

safety-symbol-Smflag-SwitzerlandTwo Swiss nuclear plants to be checked for irregularities, SwissInfo, 13 Dec 16The Swiss Federal Nuclear Safety Inspectorate (IFSN) has confirmed that steam generators at the Beznau and Gösgen nuclear plants must be checked for possible anomalies.

In a statement on Tuesday, IFSN said it had asked the operators of the Beznau and Gösgen nuclear plants to check the quality of steel components used in the steam generators.

Plant operators must scrutinize documents relating to the components and report to IFSN by April. They should then carry out any physical checks on materials.

The news follows reports that the French nuclear safety authority (ASN) discovered in June that certain steam generator channel heads made by two different manufacturers – Areva’s Creusot plant and Japan Casting & Forging Corp (JCFC) – could contain a zone comprising a high carbon concentration. That could weaken the mechanical resilience of the steel and its ability to resist the spreading of cracks.

“This pushed us to check the steam generators at the Beznau and Gösgen plants,” said IFSN interim director, Georg Schwarz……http://www.swissinfo.ch/eng/nuclear-power_two-swiss-nuclear-plants-to-be-checked-for-irregularities/42759794

December 14, 2016 - Posted by | safety, Switzerland

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