System Study: Auxiliary Feedwater 1998–2013

Technical Report · Wed Dec 31 00:00:00 EST 2014

DOI:https://doi.org/10.2172/1261720· OSTI ID:1261720

Schroeder, John Alton ^[1]

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1. Idaho National Lab. (INL), Idaho Falls, ID (United States). Risk Assessment and Management Services Dept.

This report presents an unreliability evaluation of the auxiliary feedwater (AFW) system at 69 U.S. commercial nuclear power plants. Demand, run hours, and failure data from fiscal year 1998 through 2013 for selected components were obtained from the Institute of Nuclear Power Operations (INPO) Consolidated Events Database (ICES). The unreliability results are trended for the most recent 10-year period, while yearly estimates for system unreliability are provided for the entire active period. No statistically significant increasing or decreasing trends were identified in the AFW results.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE; US Nuclear Regulatory Commission (NRC)
• DOE Contract Number: AC07-05ID14517; NRC-HQ-14-D-0018
• OSTI ID: 1261720
• Report Number(s): INL/EXT-15-34439; TRN: US1601594
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
FEEDWATER
NUCLEAR POWER PLANTS
DEMAND
EVALUATION
FAILURES
RELIABILITY
AUXILIARY WATER SYSTEMS
auxiliary feedwater
operating experience
pressurized water reactor
unreliability