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Title: System Study: High-Pressure Core Spray 1998–2013

This report presents an unreliability evaluation of the high-pressure core spray (HPCS) at eight U.S. commercial boiling water reactors. 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 HPCS results.
Authors:
 [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States). Risk Assessment and Management Services Dept.
Publication Date:
OSTI Identifier:
1261717
Report Number(s):
INL/EXT--15-34436
TRN: US1601591
DOE Contract Number:
AC07-05ID14517; NRC-HQ-14-D-0018
Resource Type:
Technical Report
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE; US Nuclear Regulatory Commission (NRC)
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; PRESSURE RANGE MEGA PA 01-10; BWR TYPE REACTORS; CORE SPRAY SYSTEMS; DEMAND; EVALUATION; FAILURES; RELIABILITY boiling water reactor; high-pressure core spray; operating experience; unreliability