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Title: Materials and design bases issues in ASME Code Case N-47

Technical Report ·
DOI:https://doi.org/10.2172/6357626· OSTI ID:6357626
;  [1]
  1. Oak Ridge National Lab., TN (United States)

A preliminary evaluation of the design bases (principally ASME Code Case N-47) was conducted for design and operation of reactors at elevated temperatures where the time-dependent effects of creep, creep-fatigue, and creep ratcheting are significant. Areas where Code rules or regulatory guides may be lacking or inadequate to ensure the operation over the expected life cycles for the next-generation advanced high-temperature reactor systems, with designs to be certified by the US Nuclear Regulatory Commission, have been identified as unresolved issues. Twenty-two unresolved issues were identified and brief scoping plans developed for resolving these issues.

Research Organization:
US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Div. of Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USNRC; Nuclear Regulatory Commission, Washington, DC (United States)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6357626
Report Number(s):
NUREG/CR-5955; ORNL/TM-12266; ON: TI93012887
Country of Publication:
United States
Language:
English