05000282/FIN-2006009-01
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Finding | |
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| Title | Redundant Curcuit Not Entirely Protected |
| Description | The inspectors identified a violation of 10 CFR Part 50, Appendix R, Section III.G.2, involving the licensees failure to ensure, in the event of a severe fire, that one redundant train of systems necessary to achieve and maintain hot shutdown conditions was free of fire damage. Specifically, the licensee failed to ensure, in the event of a fire in either one of the auxiliary feedwater (AFW) pump rooms (Fire Areas 31 and 32), that cables and circuits of one redundant train were adequately protected by a one-hour fire-rated barrier. This violation was entered into the licensees corrective action program (CAP) as 01045012, Appendix R Compliance Issues with Fire Area 31 and 32, dated August 17, 2006. The licensee initiated compensatory measures and will evaluate the violation during their transition to NFPA 805. The finding was more than minor because this failure could have affected the mitigating systems cornerstone objective and safe shutdown (SSD). Specifically, the licensees failure to physically protect the entire length of redundant cables required for SSD, in the event of a fire in the 10 CFR Part 50, Appendix R, Section III.G.2 fire area, left the SSD cables vulnerable to fire damage. Because the NRC identified violation was a circuit-related finding that was not associated with a finding of high safety significance, the inspectors evaluated the violation in accordance with the four criteria established by Section A of the NRCs Interim Enforcement Policy Regarding Enforcement Discretion for Certain Fire Protection Issues (10 CFR 50.48) for a licensee in NFPA 805 transition. The inspectors determined that for this violation; (1) the licensee would have identified the violation during the scheduled transition to 10 CFR 50.48(c); (2) the licensee had established adequate compensatory measures within a reasonable time frame following identification and would correct the violation as a result of completing the NFPA 805 transition; (3) the violation was not likely to have been previously identified by routine licensee efforts; and (4) the violation was not willful. As a result, the inspectors concluded that the violation met all four criteria established by Section A and the NRC is exercising enforcement discretion to not cite this violation in accordance with the NRCs Enforcement Policy. |
| Site: | Prairie Island  |
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| Report | IR 05000282/2006009 Section 1R05 |
| Date counted | Sep 30, 2006 (2006Q3) |
| Type: | Violation: Severity level Enforcement Discretion |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | D Schrum A Dahbur G Hausman |
| INPO aspect | |
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Finding - Prairie Island - IR 05000282/2006009 | |||||||||
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Finding List (Prairie Island) @ 2006Q3
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