Finding | |
|---|---|
| Title | Failure to Maintain the Integrity of an Auxiliary Building Fire Door |
| Description | On February 17, 2008, the inspectors identified a noncited violation of Technical Specification 5.4.1.d, Fire Protection Program, after Pacific Gas and Electric failed to maintain the integrity of an auxiliary building fire door. The inspectors identified that the latching mechanism on Fire Door 348 was degraded and not engaged. The unlatched fire door resulted in a reduction in fire confinement capability. The door was required to provide a 112-hour fire barrier between two plant fire areas. The licensee had several prior opportunities to identify the degraded fire door. Security and operations personnel passed through the affected fire area several times each day. This finding is greater than minor because the degraded fire barrier affected the mitigating systems cornerstone external factors attribute objective to prevent undesirable consequences due to fire. Using Manual Chapter 0609, Appendix F, Fire Protection Significance Determination Process, the inspectors determined this finding is within the fire confinement category and the fire barrier was moderately degraded because the door latch was not functional. The inspectors concluded that this finding is of very low safety significance because a nondegraded automatic full area water based fire suppression system was in place in the exposing fire area. This finding was entered into the corrective action program as Action Request A0719774. This finding has a crosscutting aspect in the area of problem identification and resolution associated with the corrective action program component because plant personnel did not maintain a low threshold for identifying issues. P.1(a) |
| Site: | Diablo Canyon  |
|---|---|
| Report | IR 05000275/2008002 Section 1R05 |
| Date counted | Mar 31, 2008 (2008Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | M Brown M Peck B Henderson C Graves L Ellershaw A Sanchez J Melfi J Nadel V Gaddy J Groom |
| CCA | P.1, Identification |
| INPO aspect | PI.1 |
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Finding - Diablo Canyon - IR 05000275/2008002 | |||||||||||||||||||||
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Finding List (Diablo Canyon) @ 2008Q1
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