05000286/FIN-2016003-01
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Finding | |
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| Title | Failure to Adequately Assess Fire Risk Associated with Maintenance on the Unit 3 Appendix R Diesel Generator |
| Description | The inspectors identified a Green NCV of Title 10 of the Code of Federal Regulations (10 CFR) 50.65(a)(4) because between August 1, 2016, and August 17, 2016, Entergy did not perform an adequate risk assessment for the maintenance on the Unit 3 Appendix R diesel generator (ARDG). As a result, they did not take the required risk mitigating actions (RMAs). Entergy wrote Condition Report (CR)-IP3-2016-2538, changed fire risk status to Yellow, and began implementing RMAs on August 17, 2016. The inspectors determined that this performance deficiency was more than minor because it is associated with the Protection Against External Factors attribute of the Mitigating Systems cornerstone and adversely affected its objective to ensure the reliability of systems that respond to initiating events to prevent undesirable consequences. Specifically, due to the inadequate risk assessment, Entergy did not perform shiftly walkdowns for transient combustibles and related fire and ignition sources on the available safe shutdown train. Using IMC 0609.04, Initial Characterization of Findings, and IMC 0609, Appendix K, Maintenance Risk Assessment and Risk Management Significance Determination Process, the inspectors determined that the failure to conduct RMAs for the unavailability of the ARDG required further assessment. A Region I senior reactor analyst (SRA) used SAPHIRE, Revision 8.1.14, and the Indian Point Unit 3 Standardized Plant Analysis Risk (SPAR) Model, Revision 8.20, to complete an evaluation this performance deficiency. The incremental conditional core damage probability (ICCDP) for this finding was calculated to be less than 1E-7 or very low safety significance (Green). This finding has a cross-cutting aspect in the area of Problem Identification and Resolution, Identification, because Entergy did not identify that an improperly racked-in breaker had a fire risk impact when combined with other plant conditions. |
| Site: | Indian Point  |
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| Report | IR 05000286/2016003 Section 1R13 |
| Date counted | Sep 30, 2016 (2016Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.13 |
| Inspectors (proximate) | B Haagensen E Dipaolo F Arner G Newman J Amberosini J Furia S Elkhiamy S Rich |
| Violation of: | 10 CFR 50.65 10 CFR 50.65(a)(4) |
| CCA | P.1, Identification |
| INPO aspect | PI.1 |
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Finding - Indian Point - IR 05000286/2016003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Indian Point) @ 2016Q3
Self-Identified List (Indian Point)
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