System Study: Residual Heat Removal 1998–2013
- Idaho National Lab. (INL), Idaho Falls, ID (United States). Risk Assessment and Management Services Dept.
This report presents an unreliability evaluation of the residual heat removal (RHR) system in two modes of operation (low-pressure injection in response to a large loss-of-coolant accident and post-trip shutdown-cooling) at 104 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 trends were identified in the RHR 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:
- 1261723
- Report Number(s):
- INL/EXT-15-34442
- Country of Publication:
- United States
- Language:
- English
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