05000387/FIN-2011004-03
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Finding | |
|---|---|
| Title | RCIC Failure During Surveillance |
| Description | On June 29, 2011, Unit 2 RCIC was declared inoperable after it tripped on over speed in automatic flow control when initiated for SR 3.5.3.3 between 920 and 1060 psig reactor pressure. RCIC had previously been operated in manual flow control for SR 3.5.3.4 with reactor pressure less than 165 psig reactor pressure. The failure was attributed to the ramp generator signal converter (RGSC) prior to the end of the refueling outage. The completion of SR 3.5.3.4 did not identify the issue with the RGSC. PPL entered this issue into their CAP as CR 1430270. At the end of this inspection period, PPL was conducting an apparent cause evaluation, a root cause analysis (RCA), and post-mortem investigation of the RGSC. This issue will be tracked as an URI pending inspection and review of PPL\'s completed ACE, RCA, and RGSC investigation |
| Site: | Susquehanna  |
|---|---|
| Report | IR 05000387/2011004 Section 1R15 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | URI: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | A Rosebrook C Crisden D Schroeder E Miller J Furia J Greives J Noggle K Modes P Finney P Krohn R Fuhrmeister S Ibarrola T Fish W Schmidta Rosebrook E Burket J Greives M Orr P Finney P Krohn S Pindal |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
| ' | |
Finding - Susquehanna - IR 05000387/2011004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Susquehanna) @ 2011Q3
Self-Identified List (Susquehanna)
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