05000352/FIN-2010004-01
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Finding | |
|---|---|
| Title | Failure to Take Compensatory Action for Inoperable Fire Door |
| Description | The inspectors identified a Green NCV of Limerick Generating Station operating License Condition 2.C.3, in that Exelon failed to take compensatory actions for an inoperable fire door. Specifically, on two occasions a required fire door was found in a condition where the latching mechanism did not function. Although issue reports (IRs) were written which identified this door to be a Technical Requirements Manual (TRM) fire door, actions were not taken to station the required hourly fire watch. Corrective actions included setting the required hourly fire watches, distributing guidance to all senior licensed operators, and implementing procedural changes to clarify the requirements of fire doors for future operability determinations. The finding was more than minor because it was associated with the protection against external events (fire) attribute of the Mitigating Systems Cornerstone and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. This issue was found to be of very low safety significance (Green) based upon a Phase 2 SOP screening. The inspectors determined that this finding did not have a cross-cutting because the incorrect operability decisions were based on a 1999 engineering evaluation and, therefore, was not reflective of current licensee performance. |
| Site: | Limerick  |
|---|---|
| Report | IR 05000352/2010004 Section 1R05 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | E Dipaolo J Lilliendahl N Sieller J Bream P Krohn |
| INPO aspect | |
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Finding - Limerick - IR 05000352/2010004 | ||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Limerick) @ 2010Q3
Self-Identified List (Limerick)
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