Les cahiers de l’ASN #02 - Conditions for the continued operation of EDF’s 900MWe reactors

AGEING AND CONFORMITY OF THE FACILITIES T he actions that contribute to the management of ageing and the conformity (surveillance, maintenance, inspection, addressing detected deviations, replacement of equipment) serve to ensure that the facilities comply with their safety baseline requirements, that is to say all the rules governing the safe operation of the facility . These actions must be carried out on a daily basis. Why is it important to manage ageing and ensure the conformity of the facilities? The conformity of the reactors is vital for their safe operation. Verifying compliance with the baseline safety requirements is a fundamental objective of the periodic safety reviews. At the time of their 4 th periodic safety review, the reactors will have been in operational service for about forty years. Their continued operation beyond this safety review requires the updating of design studies and equipment replacements. Particular attention must be paid to the on-replaceable components such as the reactor vessel and the reactor containment. 10 • Les cahiers de l’ASN • February 2021 ASN RESOLUTION AND REQUIREMENTS