Review of NDE Methods for Detection and Monitoring of Atmospheric SCC in Welded Canisters for the Storage of Used Nuclear Fuel

Meyer, Ryan M.¹  Pardini, Allan F.¹  Hanson, Brady D.² 

[1] Pacific Northwest National Lab. (PNNL), Richland, WA (United States);Pacific Northwest National Lab. (PNNL), Richland, WA (United

关键词: DRY STORAGE;    SPENT FUELS;    WELDED JOINTS;    CRACKS;    CASKS;    REVIEWS;    STRESS CORROSION;    MONITORING;    IN-SERVICE INSPECTION;    DETECTION;    SEAWATER;    COMPARATIVE EVALUATIONS;    NONDESTRUCTIVE TESTING;    ACOUSTIC EMISSION TESTING;    ULTRASONIC TESTING;    EDDY CURRENT TESTING;    TROPOSPHERE;    HUMIDITY NDE;    Atmospheric Stress Corrosion Cracking;    Dry Cask Storage;    Used Nuclear Fuel;   

DOI  :  10.2172/1183636
RP-ID  :  PNNL--22158
PID  :  OSTI ID: 1183636
Others  :  Other: AF5865010
Others  :  TRN: US1500317

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

Dry cask storage systems (DCSSs) for used nuclear fuel (UNF) were originally envisioned for storage periods of short duration (~ a few decades). However, uncertainty challenges the opening of a permanent repository for UNF implying that UNF will need to remain in dry storage for much longer durations than originally envisioned (possibly for centuries). Thus, aging degradation of DCSSs becomes an issue that may not have been sufficiently considered in the design phase and that can challenge the efficacy of very long-term storage of UNF. A particular aging degradation concern is atmospheric stress corrosion cracking (SCC) of DCSSs located in marine environments. In this report, several nondestructive (NDE) methods are evaluated with respect to their potential for effective monitoring of atmospheric SCC in welded canisters of DCSSs. Several of the methods are selected for evaluation based on their usage for in-service inspection applications in the nuclear power industry. The technologies considered include bulk ultrasonic techniques, acoustic emission, visual techniques, eddy current, and guided ultrasonic waves.