05000445/FIN-2017001-01
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Finding | |
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| Title | Failure to Maintain B.5.b Equipment in a State of Readiness to Support Mitigation Strategies |
| Description | Green. The inspectors identified a non-cited violation of 10 CFR 50.54(hh)(2), Conditions of Licenses, involving the licensees failure to maintain available equipment needed to implement mitigating strategies to provide makeup to steam generators following loss of large areas of the plant due to explosions or fire. Specifically, the licensee failed to maintain available a portable alternate mitigation equipment pump related to the steam generator makeup strategy. As an immediate corrective action the licensee put temporary heaters in place for the alternate mitigation equipment pump to ensure the equipment was stored at temperatures greater than 32 degrees Fahrenheit pending further evaluation. The licensee entered this issue into their corrective action program as Condition Report CR-2016-010832. The failure to maintain all necessary equipment available to implement mitigating strategies as required by regulations and conditions of the operating license was a performance deficiency. The performance deficiency was more than minor, and therefore a finding, because it was associated with the design control attribute of the Mitigating Systems cornerstone and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using Inspection Manual Chapter 0609, Appendix L, B.5.b Significance Determination Process, dated December 24, 2009, the inspectors determined the finding was of very low safety significance (Green) because it resulted in an unrecoverable unavailability of an individual mitigating strategy but did not result in multiple unavailable mitigating strategies, or loss of all on-site, self-powered, portable pumping capability. The inspectors did not assign a cross-cutting aspect because the performance deficiency was not reflective of present performance. |
| Site: | Comanche Peak  |
|---|---|
| Report | IR 05000445/2017001 Section 1R04 |
| Date counted | Mar 31, 2017 (2017Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.04 |
| Inspectors (proximate) | C Smith E Uribe G Pick J Braisted J Josey M Haire R Kumana S Hedger W Cullum |
| Violation of: | 10 CFR 50.54 |
| INPO aspect | |
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Finding - Comanche Peak - IR 05000445/2017001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Comanche Peak) @ 2017Q1
Self-Identified List (Comanche Peak)
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