05000397/FIN-2015008-01
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Finding | |
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| Title | Failure to Ensure Adequate Acceptance Criteria in Fire Main Surveillance Testing |
| Description | The team identified a non-cited violation of License Condition 2.C.14, Fire Protection Program (Generic Letter 86-10), for the failure to establish procedural guidance for validating the underground fire main condition to ensure the required fire suppression system demands were met. Specifically, the licensee failed to provide acceptance criteria in Plant Procedure Manual 15.4.2, Fire Main Hydraulic Data Acquisition, to validate that the fire water supply at the base of the largest demanding fire suppression system was adequate given the current condition of the fire main. From review of design information, the team verified the licensee met their fire protection system design flow and pressure requirements, determined that other pumps would be available, and determined this finding did not affect the ability to achieve safe shutdown. The licensee entered this deficiency in their corrective action program as Action Request AR-00335821. The failure to provide adequate acceptance criteria to validate the condition of the water supply was a performance deficiency. Specifically, the licensee failed to provide adequate acceptance in the Plant Procedure Manual 15.4.2 for Surveillance Requirement 1.10.1.14 to ensure that the current fire water supply can meet the largest demanding fire suppression system. The performance deficiency was more than minor because it was associated with the protection of external events attribute (fire) of the Mitigating Systems cornerstone and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The team evaluated the finding using Inspection Manual Chapter 0609, Appendix F, Fire Protection Significance Determination Process, because it affected the firewater supply category. Using Appendix F, Attachment 1, Fire Protection Significance Determination Process Phase 1 Worksheet, Task 1.4.7, Fire Water Supply, the team assigned a very low safety significance (Green) to the finding because of the availability of at least 50 percent of the required firewater capacity. The team confirmed this after verifying the water supply exceeded the minimum in the water supply calculations, the availability of additional fire pumps beyond that required for the minimum water supply and the condition did not affect the ability to achieve safe shutdown. The finding did not have a cross-cutting aspect since the performance deficiency was more than three years old and not indicative of current performance. |
| Site: | Columbia  |
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| Report | IR 05000397/2015008 Section 1R05 |
| Date counted | Dec 31, 2015 (2015Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | A Sanchez E Uribe G Werner J Mateychick S Makor |
| Violation of: | License Condition - Fire Protection License Condition |
| INPO aspect | |
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Finding - Columbia - IR 05000397/2015008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2015Q4
Self-Identified List (Columbia)
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