ANTICIPATED ANALYSIS OF FLAMANVILLE 3 EPR OPERATING LICENSE STATUS AND INSIGHTS FROM LEVEL 1 PSA REVIEW

摘要

The first generation Ⅲ reactor in France (EPR) is under the final phase of construction at Flamanville (EPR-FA3).For the EPR reactor, the probabilistic studies were developed beginning with the early design and then evolved during the different design phases. These studies were intensively used by both EDF and IRSN, as a complement of other more traditional deterministic methods, leading to many design and studies improvements. It is expected that the plant operator (EDF) will send soon to the Safety Authority the request for operating license of this new reactor. Taking into account the difficulties to assess a new evolutionary design in a rather short term, most of the safety related subjects were already analyzed by IRSN, in the frame of so called "anticipated examination" of the operating license request. In this context, the updated versions of the Level 1 probabilistic studies for internal events and hazards were analyzed by IRSN.