05000416/FIN-2017008-01
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Finding | |
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| Title | Untimely Corrective Action |
| Description | Green. The team identified a non-cited violation of License Condition 2.C.(41) for failure to correct a condition adverse to fire protection in a timely manner. Specifically, the licensee failed to complete evaluations of multiple spurious operations (MSO) concerns identified in 2011. The licensee entered this finding into their corrective action program as Condition Report CR-GGN-2017-03996. The failure to correct a condition adverse to fire protection in a timely manner was a performance deficiency. The performance deficiency was more than minor because it was associated with the protection against external events (fire) attribute of the Mitigating Systems cornerstone and it adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, untimely resolution of these MSO actuations placed the facility at risk of being unable to safely shutdown the facility in response to a fire. The finding was screened in accordance with Inspection Manual Chapter (IMC) 0609, Significance Determination Process, Attachment 4, Initial Characterization of Findings, dated June 19, 2012. Because the finding affected the ability to achieve and maintain post-fire safe shutdown, the team reviewed the finding using IMC 0609, Appendix F, Attachment 1, Fire Protection Significance Determination Process Worksheet, dated September 20, 2013. The finding was screened as a Green finding of very low safety significance in accordance with Task 1.3, Ability to Achieve Safe Shutdown, Question A. Although the licensee failed to completely evaluate the impact of MSOs that could potentially result in the loss of suppression pool inventory, the team determined that for all fire areas one division of the residual heat removal system and the supporting standby service water system remained available along with suppression pool level indication. The team confirmed that suppression pool makeup for the standby service water system would remain available. For the postulated control room fire that led to control room evacuation, a senior reactor analyst performed a Phase 3 evaluation to determine the risk significance of this finding. The senior reactor analyst determined this finding was of very low safety significance. The finding had a cross-cutting aspect in 3 the Conservative Bias component of the Human Performance area because the licensee failed to use decision making-practices that emphasize prudent choices over those that are simply allowable. Specifically, the licensee reclassified a condition report to be non-adverse allowing resolution to be given a lower priority prior to completing the evaluations required to provide a technical basis for that decision [H.14] |
| Site: | Grand Gulf  |
|---|---|
| Report | IR 05000416/2017008 Section 1R05 |
| Date counted | Jun 30, 2017 (2017Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | J Mateychick S Makor N Okonkwo E Uribe G Werner |
| Violation of: | License Condition - Fire Protection |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Grand Gulf - IR 05000416/2017008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2017Q2
Self-Identified List (Grand Gulf)
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