05000272/FIN-2008005-04
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Finding | |
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| Title | Inadequate Identification of Midloop Level Calibration Error |
| Description | The inspectors identified a self-revealing finding because PSEG did not use the corrective action process (CAP) to identify and correct a recurring issue with the calibration of a narrow range mid loop level transmitter. This extended the time that the reactor was placed in a reduced reactor coolant (RC) inventory condition during the S1R19 refueling outage, which unnecessarily increased shutdown plant risk. Corrective actions taken by PSEG included correction of the surveillance data sheet for the narrow range level indication for the 11 RC loop. PSEG also entered the issue into the corrective action program as notification 20390640. This finding was more than minor because it was associated with the design control attribute of the Mitigating Systems cornerstone and it affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, not correcting the calculation error resulted in the inaccurate calibration procedure for the 11 RC loop narrow range level indication. This unnecessarily extended the time that the plant was operated in a reduced reactor coolant inventory condition which increased shutdown plant risk. The inspectors evaluated the significance of this finding using IMC 0609, Appendix G, Shutdown Operations SDP, Attachment 1, Checklist 6 and Figure 1. The inspectors determined that this finding was of very low safety significance (Green) because it did not require a quantitative assessment since two sources of level instrumentation remained available during the reduced inventory evolution. This finding had a cross-cutting aspect in the area of problem identification and resolution because PSEG did not identify the calculation error issue completely, accurately, and in a timely manner commensurate with the safety significance P.1(a). Specifically, PSEG did not ensure that technician observations related to repeat calibration errors on the 11 RC loop level indicator, which were identified in 2007, were entered into the CAP. (Section 1R20 |
| Site: | Salem  |
|---|---|
| Report | IR 05000272/2008005 Section 1R20 |
| Date counted | Dec 31, 2008 (2008Q4) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | S Chaudhary D Schroeder M Modes J Schoppy J Furia E Gray P Presby E Huang H Balian A Burritt |
| CCA | P.1, Identification |
| INPO aspect | PI.1 |
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Finding - Salem - IR 05000272/2008005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Salem) @ 2008Q4
Self-Identified List (Salem)
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