05000397/FIN-2015008-02
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Finding | |
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| Title | Inadequate Alternative Shutdown Procedure |
| Description | The team identified a non-cited violation of Technical Specification 5.4, Procedures, for the failure to provide adequate procedures to implement the fire protection program. Specifically, the alternative shutdown procedure failed to assure operator actions for post-fire safe shutdown would be performed within the required times following a control room evacuation due to fire. The licensee entered this issue into their corrective action program as Action Request AR-00335854 and issued Night Order Number 1668 providing direction to the operators as a compensatory measure until they completed additional corrective actions. The failure to provide an adequate procedure to assure operators performed post-fire safe shutdown actions within the required time following a control room evacuation due to fire 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. The team evaluated this finding using Inspection Manual Chapter 0609, Appendix F, Fire Protection Significance Determination Process, dated September 20, 2013. Since operators would take more than the 10 minutes specified in their procedure to initiate reactor depressurization, the team could not determine that the operators had maintained the ability to reach and maintain safe shutdown conditions. The dominant core damage sequences involved (1) a fire in the control room that required a control room evacuation and (2) the failure of operators to initiate emergency depressurization. Therefore, a Region IV senior reactor analyst performed a bounding detailed risk evaluation. The analyst noted that additional time was available in a probabilistic risk assessment calculation. The additional time available in a probabilistic risk assessment calculation helped to minimize the risk. Based on this information, the finding screened to Green because the licensee could achieve safe shutdown. The finding did not have a crosscutting aspect since the performance deficiency was more than three years old and not indicative of current performance. |
| Site: | Columbia  |
|---|---|
| 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: | Technical Specification - Procedures Technical Specification |
| 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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