Operating experience and aging-seismic assessment of electric motors
Objectives of this program are to identify concerns related to the aging and service wear of equipment operating in nuclear power plants, to assess their possible impact on plant safety, to identify effective inspection surveillance and monitoring methods and to recommend suitable maintenance practices for mitigating aging related concerns and diminish the rate of degradation due to aging and service wear. Motor design and materials of construction are reviewed to identify age-sensitive components. Operational and accidental stressors are determined, and their effect on promoting aging degradation is assessed. Failure modes, mechanisms, and causes have been reviewed from operating experiences and existing data banks. The study has also included consideration for the seismic correlation of age-degraded motor components. The aforementioned reviews and assessments were assimilated to characterize the dielectric, rotational, and mechanical hazards on motor performance and operational readiness. The functional indicators which can be monitored to assess motor component deterioration due to aging or other accidental stressors are identified. Conforming with the NPAR strategy as outlined in the program plan, the study also includes a preliminary discussion of current standards and guides, maintenance programs, and research activities pertaining to nuclear power plant safety-related electric motors.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5039853
- Report Number(s):
- NUREG/CR-4156; BNL-NUREG-51861; ON: TI86001324
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRIC MOTORS
FAILURES
NUCLEAR POWER PLANTS
AGING
EVALUATION
FAILURE MODE ANALYSIS
OPERATION
REVIEWS
SAFETY
WEAR
DOCUMENT TYPES
MOTORS
NUCLEAR FACILITIES
POWER PLANTS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
THERMAL POWER PLANTS
220900* - Nuclear Reactor Technology- Reactor Safety