New rules for the interventions on the primary circuit of nuclear reactors

This decision from the French authority of nuclear safety (ASN) concerns the enforcement of new technical rules relative to the maintenance activities performed on the primary circuit of Electricite de France (EdF) reactors. Different levels of intervention are considered: non noticeable interventions internally carried out by EdF with a simple information given to the ASN, noticeable interventions prepared and performed by EdF under the control of the regional directions of industry, research and environment (DRIRE), and important interventions requiring a qualification dossier validated by the bureau of nuclear boilers control (BCCN). The details of the procedure are given in the attached note. (J.S.)