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| Quarter | Site | Title | Description | |
|---|---|---|---|---|
| 05000277/FIN-2012007-01 | 2012Q2 | Peach Bottom | Licensee-Identified Violation | Licensee Event Report 0500027812011-004-00 described a modification error in which a control cable for the HPCI turbine steam supply MOV (MO-3-23-014) was routed through the same fire area the system is credited for post-fire safe shutdown. The valve is credited for post-fire safe shutdown capability for a fire in fire area 135, South CRD Equipment Room (Room 257) for Unit 3. This was a violation of Operating License Condition 2.C.(4) and 10 CFR Part 50, Appendix R, Section lll.G.2, for failure to ensure that the cable was protected per the Appendix R, lll.G.2 requirements. Contrary to the above, the control cable for the HPCI turbine steam supply MOV was routed in error during the period of time between September 2011 (RFO P3R18), and December 19, 2011. Specifically, PBAPS determined that a postulated fire in fire area 133 could cause damage to the HPCI turbine steam supply control cable and cause the HPCI pump to be unavailable. 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. Because this finding is of very low safety significance and had been entered into Exelon\'s CAP under IR01290922, this violation is being treated as a Green, licensee-identified NCV consistent with the NRC Enforcement Policy. |