Introduction for Technical Revisions of JSME Environmental Fatigue Evaluation Method

Abstract

“Environmental Fatigue Evaluation Method for Nuclear Power Plants” (JSME S NF1) is utilized in Plant Life Management (PLM) evaluation for operating LWR plants. The first publication of JSMS S NF1 was 2006 Edition, and it was revised as 2009 Edition. After that, Subgroup on Fatigue Evaluation in the JSME Committee on Power Generation Facility Codes has developed three technical items for the JSME Environmental Fatigue Evaluation, and those have been approved by the Main Committee. Those revisions will be incorporated into 2022 Edition. The three technical items that are design fatigue curves, environmental fatigue life correction factor for PWR components, and Flaw Tolerance Approach for environmental fatigue evaluation are introduced.