Regulatory instrument review: Management of aging of LWR (light water reactor) major safety-related components

Technical Report · Mon Oct 01 00:00:00 EDT 1990

OSTI ID:6528445

Werry, E V ^[1]

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1. Pacific Northwest Lab., Richland, WA (USA)

This report comprises Volume 1 of a review of US nuclear plant regulatory instruments to determine the amount and kind of information they contain on managing the aging of safety-related components in US nuclear power plants. The review was conducted for the US Nuclear Regulatory Commission (NRC) by the Pacific Northwest Laboratory (PNL) under the NRC Nuclear Plant Aging Research (NPAR) Program. Eight selected regulatory instruments, e.g., NRC Regulatory Guides and the Code of Federal Regulations, were reviewed for safety-related information on five selected components: reactor pressure vessels, steam generators, primary piping, pressurizers, and emergency diesel generators. Volume 2 will be concluded in FY 1991 and will also cover selected major safety-related components, e.g., pumps, valves and cables. The focus of the review was on 26 NPAR-defined safety-related aging issues, including examination, inspection, and maintenance and repair; excessive/harsh testing; and irradiation embrittlement. The major conclusion of the review is that safety-related regulatory instruments do provide implicit guidance for aging management, but include little explicit guidance. The major recommendation is that the instruments be revised or augmented to explicitly address the management of aging.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (USA). Div. of Engineering; Pacific Northwest Lab., Richland, WA (USA)
• Sponsoring Organization: USNRC
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6528445
• Report Number(s): NUREG/CR-5490-Vol.1; PNL-7190-Vol.1; ON: TI91002432; TRN: 91-001143
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
29 ENERGY PLANNING
POLICY AND ECONOMY
REACTOR COMPONENTS
AGING
US NRC
RECOMMENDATIONS
PIPES
PRESSURE VESSELS
REACTOR SAFETY
REGULATIONS
STANDARDS
STEAM GENERATORS
WATER COOLED REACTORS
BOILERS
CONTAINERS
NATIONAL ORGANIZATIONS
REACTORS
SAFETY
US ORGANIZATIONS
VAPOR GENERATORS
220900* - Nuclear Reactor Technology- Reactor Safety
210700 - Nuclear Power Plants- Regulation & Licensing
293000 - Energy Planning & Policy- Policy
Legislation
& Regulation
210100 - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200 - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled