The safety valves of the Finnish EPR Olkiluoto 3 (1.6 GW), which are the same as those of the EPR at Flamanville in France, show cracks due to corrosion, and a damaged part will have to be be replaced eventually, the nuclear safety authority Stuk announced on Friday.
“The damage [observed] on the [safety] valves is examined by [the nuclear equipment manufacturer and EDF subsidiary] Framatome in Erlangen, [in Germany]. During the investigation, he discovered a damaged part. This damage is caused by stress corrosion cracking,” said a spokesperson. In early September, Stuk said the pilot operated valves on Olkiluoto 3 (OL3) would need to be replaced, after a leak was found during a routine check, and that this would take one to two months. The commercial start-up of the reactor was postponed for nine months, until the end of February 2022, mainly because of these problems.
Montel 23rd Oct 2020 read more »