05000395/FIN-2015002-01
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Finding | |
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| Title | Failure to Maintain Fire Door/Steam Propagation Barrier in Accordance With the Fire Protection Program Procedure |
| Description | The inspectors identified a non-cited violation of Technical Specifications (TS) 6.8.1.f, Fire Protection Program (FPP) procedures, which involved a failure to comply with the requirements of FPP-025, Fire Containment, Revision (Rev.) 4H, for maintaining the operability of a fire door and steam propagation barrier (SPB), DRAB/319. The licensee entered the problem into their corrective action program as condition report (CR) 15-00662. The inspectors identified a performance deficiency (PD) for the failure to maintain the fire door and SPB operable per the requirements of FPP-025. The inspectors reviewed inspector manual chapter (IMC) 0612, Appendix B, Issue Screening, dated September 7, 2012, and determined 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. In regards to the fire confinement function of DRAB/319, the inspectors used IMC 0609, Significant Determination Process, Appendix F, Fire Protection Significance Determination Process, dated September 20, 2013, and performed a Phase 1 analysis to determine the finding was of very low significance or Green. The fire confinement program element was not of low degradation, the non-suppression probability was 0.1, the fire frequencies related to the affected fire zones AB01.10 and FH01.01 were 3.31E-3 and 8.69E-5 respectfully, and the duration of the component inoperability was approximately 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or 0.00137, which resulted in screening check frequency of 4.65E-7 that was less than the screening criteria of 1E-6. Additionally, the inspectors noted minimal fixed combustibles and ignition sources in the near vicinity of both sides of DRAB/319, and the fire detection instrumentation in both affected fire zones remained operable allowing an operator response in the event of a fire. In regards to the SPB function of DRAB/219, the inspectors used IMC 0609, Appendix A, SDP for Findings at- Power, dated June 19, 2012, and determined the finding was also of very low safety significance, or Green, because it was not a design deficiency or loss of system function impacting TS. The resulting increase of humidity above equipment qualification test limits of one train of reactor vessel level instrumentation system transmitters would likely not have resulted in a loss of function. The inspectors reviewed IMC 0310, Aspects Within Cross Cutting Areas, dated December 4, 2014, and determined the cause of this finding involved the cross-cutting area of human performance and the aspect of resources, H.1, because the licensee failed to ensure that the fire door closure mechanism was adequate to close the door for the protection of equipment important to safety. |
| Site: | Summer  |
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| Report | IR 05000395/2015002 Section 1R15 |
| Date counted | Jun 30, 2015 (2015Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | E Coffman J Reece S Rose |
| Violation of: | Technical Specification - Procedures Technical Specification |
| CCA | H.1, Resources |
| INPO aspect | LA.1 |
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Finding - Summer - IR 05000395/2015002 | ||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Summer) @ 2015Q2
Self-Identified List (Summer)
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