05000338/FIN-2011003-02
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Finding | |
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| Title | Failure to Maintain Fire Doors in Accordance with the Fire Protection Program |
| Description | The inspectors identified a non-cited violation of the North Anna Power Station, Units 1 & 2 Renewed Facility Operating Licenses, NPF-4 & 7, Condition 2.D, Fire Protection, which involved a failure to comply with the requirements for maintaining the operability of fire door, 02-BLD-STR-S71-18, 2H Emergency Diesel Gen Room Door sb Elev 271, The inspectors also identified an additional example of this violation which involved fire door, 01-BLD-STR-S07-3, Unit 1/Unit 2 Switchgear Door Service Building EL 307. The licensee entered the problems into their corrective action program as condition reports 417750 and 418705 for 02-BLD- S71-18, and 430445, 01-BLD-STR-S07-3. The inspectors identified a performance deficiency (PD) for the failure to maintain the fire doors operable per the requirements of the Fire Protection Program and consequently failing to declare the fire doors inoperable with appropriate compensatory measures. The PD was more than minor because it impacted the mitigating systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences, and the related attribute of protection against external factors such as fire. This finding had a credible impact on safety because the inoperability of the fire doors would have an adverse impact on the functionality of the gaseous suppression systems. In accordance with NRC IMC 0609, Significant Determination Process, Appendix F, the inspectors performed a Phase 1 analysis and determined the finding resulted in very low significance, Green, because although the fire confinement program element was of high degradation, the fire frequencies related to the rooms were 1E-6 and the duration of the component inoperability was less than three days, which resulted in screening check frequency of 1E-8 which was less than the screening criteria of 1E-6. The cause of this finding involved the crosscutting area of human performance, the component of resources, and the aspect of adequate equipment, H.2(d), because the licensee failed to ensure that fire door closures were adequate for the protection of equipment important to safety. |
| Site: | North Anna  |
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| Report | IR 05000338/2011003 Section 1R05 |
| Date counted | Jun 30, 2011 (2011Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | A Alen A Sengupta C Sanders D Mas G Mccoy J Reece R Carrion R Clagg S Sandal |
| CCA | H.1, Resources |
| INPO aspect | LA.1 |
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Finding - North Anna - IR 05000338/2011003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (North Anna) @ 2011Q2
Self-Identified List (North Anna)
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