WENRA has updated its Report on Activities in WENRA countries following the “Recommendation regarding flaw indications found in Belgian reactors”. In 2013 WENRA had recommended to its members, that all reactor pressure vessels in every European nuclear power plant should be subjected to a standardized review to check for manufacturing flaws (hydrogen-induced forging effects) (Link to the recommendation).
The recommendation included a two-step approach:
Step 1: Comprehensive review of the manufacturing and review records.
Step 2: In case the national nuclear safety authority considers it necessary, representative examination of the vessels with non‐destructive test‐methods.
A first report describing the activities carried out in WENRA countries up to this point in time was published in December 2014. Since that initial report, reviewing of the manufacturing and review records has been completed for all countries. Further UT inspections have all been carried out and only a few cases of indications leading to further assessments were found. Some UT inspections are still planned.
Updated report on flaw indications in RPV