The United Kingdom’s Office for Nuclear Regulation (ONR) issued an improvement notice to EDF Energy Nuclear Generation Ltd. earlier this month for a problem involving the pressure systems safety regulations (PSSR) at the two-unit Heysham 1 nuclear power station. The notice was served following an inspection of the Unit 1 pressure vessel at the Lancashire site. Out of more than 600 sealed penetrations in the unit, “ONR found that EDF Energy had failed to examine 11 penetrations within the intervals specified in the written maintenance scheme,” a June 4 news release from the agency stated. ONR also concluded, however, that nuclear safety had not been compromised and that EDF Energy had “presented an adequate safety case to justify the continued safe operation of the reactor.” A British subsidiary of France’s Électricité de France, EDF Energy must comply with the improvement notice by completing the 11 overdue examinations by December 18, 2020.
American Nuclear Society 16th June 2020 read more »