05000352/FIN-2013007-03
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | License Condition 2.C.(3) for Limerick Generating Station Unit 1 and Unit 2 states that, Exelon Nuclear shall implement and maintain in effect all provisions of the approved Fire Protection Program as described in the UFSAR. Appendix 9A, Section 9A.3.1.1, Item 72 states, Fire damage should be limited so that one train of systems necessary to achieve and maintain hot shutdown conditions . . . is free of fire damage. Contrary to the above, until November 3, 2012, the D22 output breaker control circuit would potentially be damaged by a fire in area 67W and the D22 output breaker was credited for safe shutdown in area 67W. Exelon entered this issue into the CAP (IR 1422043). The issue 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 determined that the finding was of very low safety significance (Green), based on IMC 0609, Appendix F, Fire Protection Significance Determination Process (SDP), Phase 2 screening, task number 2.3.5 because the cable was routed in conduit predominately through a transient combustible free zone. Additionally, the cable was not routed near a credible fire ignition source in the fire area. |
| Site: | Limerick  |
|---|---|
| Report | IR 05000352/2013007 Section 4OA7 |
| Date counted | Jun 30, 2013 (2013Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | J Lilliendahl C Cahill K Young R Fuhrmeister J Rogge J Patel |
| Violation of: | License Condition - Fire Protection License Condition |
| INPO aspect | |
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Finding - Limerick - IR 05000352/2013007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Limerick) @ 2013Q2
Self-Identified List (Limerick)
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