Use of similarity analysis to supplement early qualification work
From 1985 through 1987, the US Nuclear Regulatory Commission (NRC) and the nuclear industry have questioned the technical adequacy of environmental qualification work performed during the early 1980s to satisfy the requirements of IE Bulletin 79-01B and the subsequent 10CFR50.49. A major technical challenge has been that some subcomponents within the equipment items that were qualified have not been properly accounted for and analyzed. An alternative to resolve this issue is to permit the use of similarity analyses to analyze the behavior of the materials in question for all environmental conditions (e.g., radiation, aging, temperature, and pressure). The NRC and industry need to work closely in the future to develop acceptance criteria for similarity based on reasonable assurance of qualification for generic materials. The Nuclear Utility Group on Equipment Qualification has been working to this end. Without such an agreement, the nuclear industry may have to spend valuable resources to requalify or to replace equipment that could be qualified through sound similarity analyses, resources that could be utilized to improve safety in other areas of the plant.
- OSTI ID:
- 6942918
- Report Number(s):
- CONF-880422-
- Journal Information:
- Trans. Am. Nucl. Soc.; (United States), Journal Name: Trans. Am. Nucl. Soc.; (United States) Vol. 56; ISSN TANSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220900* -- Nuclear Reactor Technology-- Reactor Safety
AGING
ENGINEERED SAFETY SYSTEMS
INSPECTION
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
POWER PLANTS
QUALITY ASSURANCE
REGULATIONS
RELIABILITY
SERVICE LIFE
THERMAL POWER PLANTS
US NRC
US ORGANIZATIONS