05000387/FIN-2008003-01
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Inappropriate Corrective Action in Response to Repeated ESW Pump Timer Failures |
| Description | The inspectors identified a non-cited violation (NCV) of Title 10 of the Code of Federal Regulation (CFR), Part 50, Appendix B, Criterion XVI, Corrective Action because PPL did not implement timely corrective actions for a degraded condition associated with the A and C emergency service water (ESW) pump emergency diesel generator (EDG) load sequence timers. Inspectors identified that PPL had multiple opportunities to correct this condition adverse to quality. The inability of ESW pump initiation timers to function as designed over the entire surveillance interval was identified by PPL following failed surveillance tests in 2002, 2004, and 2006. On April 9, 2008, during the performance of Unit 1 Division I diesel generator LOCA/LOOP testing, the A and C ESW pump start sequencing timers failed their acceptance criteria with times that were longer than specified. In response to the timer failures, and to ensure the operability of the associated diesel generators, the operators deactivated the A and C ESW pumps by opening the DC knife switches in accordance with procedure. This resulted in elevated online risk for Unit 2 because one Division of ESW was inoperable and unavailable for automatic or manual start. PPL initiated actions to restore the function of the timers and has entered the issue into the corrective action program. The ESW pumps were returned to an operable status on April 10, 2008. This finding is greater than minor because it is associated with the equipment performance attribute of the Mitigating Systems cornerstone; and it negatively impacted the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. This finding is related to the Problem and Identification Resolution cross-cutting area (Corrective Action) because PPL did not take appropriate corrective actions to address a safety issue and adverse trend in a timely manner commensurate with its safety significance. (P.1(d)), (Section 1R15 |
| Site: | Susquehanna  |
|---|---|
| Report | IR 05000387/2008003 Section 1R15 |
| Date counted | Jun 30, 2008 (2008Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | D Tifft J Furia G Ottenberg F Jaxheimer P Krohn |
| CCA | P.3, Resolution |
| INPO aspect | PI.3 |
| ' | |
Finding - Susquehanna - IR 05000387/2008003 | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Susquehanna) @ 2008Q2
Self-Identified List (Susquehanna)
| |||||||||||||||||||||||||||||||||||||||||