Enhanced Component Performance Study: Air-Operated Valves 1998???2013

Schroeder, John Alton¹ 

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

关键词: VALVES;    AIR;    FAILURES;    NUCLEAR POWER PLANTS;    RELIABILITY;    PERFORMANCE;    EVALUATION;    OPERATION air-operated valve;    component performance;    operating experience;   

DOI  :  10.2172/1261715
RP-ID  :  INL/EXT--15-34433
PID  :  OSTI ID: 1261715
Others  :  TRN: US1601589

美国|英语

来源: SciTech Connect

【 摘 要 】

This report presents a performance evaluation of air-operated valves (AOVs) at U.S. commercial nuclear power plants. The data used in this study are based on the operating experience failure reports from fiscal year 1998 through 2013 for the component reliability as reported in the Institute of Nuclear Power Operations (INPO) Consolidated Events Database (ICES). The AOV failure modes considered are failure-to-open/close, failure to operate or control, and spurious operation. The component reliability estimates and the reliability data are trended for the most recent 10-year period, while yearly estimates for reliability are provided for the entire active period. No statistically significant increasing or decreasing trends were identified in the AOV failure data.