A risk-based review of Instrument Air systems at nuclear power plants
Creators
- 1. Science Applications International Corp., McLean, VA (USA)
- 2. Brookhaven National Lab., Upton, NY (USA)
Description
The broad objective of this analysis was to provide risk-based information to help focus regulatory actions related to Instrument Air (IA) systems at operating nuclear power plants. We first created an extensive data base of summarized and characterized IA-related events that gave a qualitative indication of the nature and severity of these events. Additionally, this data base was used to calculate the frequencies of certain events, which were used in the risk analysis. The risk analysis consisted of reviewing published PRAs and NRC Accident Sequence Precursor reports for IA-initiated accident sequences, IA interactions with frontline systems, and IA-related risk significant events. Sensitivity calculations were performed when possible. Generically, IA was found to contribute less to total risk than many safety systems; however, specific design weaknesses in safety systems, non-safety systems, and the IA system were found to be significant in risk. 22 refs., 13 figs., 24 tabs
Availability note (English)
MF available from INIS under the Report Number; NTIS, PC A08/MF A01 - GPO as TI90006779; OSTI; INIS.
Files
Restricted
The record is publicly accessible, but files are restricted to users with access.
Additional details
Publishing Information
- Imprint Pagination
- 160 p.
- Report number
- NUREG/CR--5472
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21036808
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S99: GENERAL AND MISCELLANEOUS;
- Descriptors DEI
- BWR TYPE REACTORS; CONTAMINATION; DATA BASE MANAGEMENT; DATA PROCESSING; DOCUMENTATION; EMERGENCY PLANS; FABRICATION; FAILURE MODE ANALYSIS; HUMAN FACTORS; IMPLEMENTATION; LEAKS; NUCLEAR POWER PLANTS; PWR TYPE REACTORS; REACTOR ACCIDENTS; REACTOR INSTRUMENTATION; REACTOR OPERATION; REACTOR SAFETY; RECOMMENDATIONS; RELIABILITY; RISK ASSESSMENT; SCRAM
- Descriptors DEC
- ACCIDENTS; ENRICHED URANIUM REACTORS; MANAGEMENT; NUCLEAR FACILITIES; OPERATION; POWER PLANTS; POWER REACTORS; REACTOR SHUTDOWN; REACTORS; SAFETY; SHUTDOWN; SYSTEM FAILURE ANALYSIS; SYSTEMS ANALYSIS; THERMAL POWER PLANTS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Contract/Grant/Project number
- Contract AC02-76CH00016
- Secondary number(s)
- BNL-NUREG--52220.