Presentation of the criteria of the appendix 5.4 of the RSE-M code, devoted to the fracture mechanics parameters calculation

摘要

Appendix 5.4 of the RSE-M code, devoted to in-service operation on PWR, provides all solutions and compendia required for the calculation of fracture mechanics parameters in nuclear components for relevant loading conditions. An important work of development has been made since early 1990's by AREVA, CEA and EDF and capitalised in this appendix 5.4. To support the justification of these solutions and capitalise the related knowledge, AFCEN, in charge of the edition of the French nuclear codes, has launched the preparation of several criteria documents. This paper presents the criteria related to the appendix 5.4 and summarises their contain. A particular focus will be made on the stress intensity factor solutions, J parameter for mechanical loading, assessment of imposed displacement conditions, analysis of thermal chocks, weld mismatch impact and through-clad and under-clad defects in vessels. For each topic, historical elements, the development strategy and validation results will be presented.