后续许可证续期-美国船队视角、 监管和行业挑战.pdf

1、Subsequent License RenewalU.S.experience and perspectives on operation beyond 60 yearsKeywords:Aging management,operating experience,regulatory oversight NIC 2024June 5-6,2024Amsterdam,NetherlandsJohn Wise,Senior Technical AdvisorJohn Wise,PhD,PEHe supports the resolution of technical and regulatory

2、 issues related to materials degradation and aging management of nuclear power plant components and previously served a similar role for spent fuel dry storage systems.Prior to joining the NRC in 2010,he was a research assistant professor at Colorado School of Mines,research engineer at Bethlehem St

3、eel Corporation,and failure analysis consultant at Exponent,Inc.He received his bachelors degree in metallurgical engineering and his doctorate in materials science and engineering.2 2U.S.Reactor Status0102030400-1010-20 20-30 30-40 40-5050Operating ReactorsYears in Service40 years60 years80 yearsLi

4、censesubject to 80y environmental impact reassessment56 reactors operating beyond 40 yearsOldest reactor:55 yearsLarge portion of reactors expected to pursue 80-year license(subsequent license renewal,SLR)SLR review of 16 reactors in progress 3 3Extending plant operating life License Renewal(40-60y)

5、o 20-year extension beyond the original 40-year licenseo Aging management requirement to maintain plants current licensing basis Subsequent License Renewal(60-80y)o Same regulationso Similar NRC review/approval processo Enhanced technical basis with experience&lessons learnedWhy 20 years?“provide a

6、useful opportunity to validate and validate and reassessunderstanding reassessunderstanding of ageof age-related related degradationdegradation”-U.S.Federal Register notice on 1991 license renewal regulation4 4Operating experience5 5NRC renewal application reviewsoReview of plant operating experienc