05000387/FIN-2012009-02
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Failure to Identify and Correct a CAQ Associated with a SAFETY-RELATED Battery Maintenance Procedure |
| Description | The inspectors identified an NCV of 10 CFR 50, Appendix B, Criterion XVI, Corrective Actions, because PPL did not identify and correct the inadequate weekly testing procedure that resulted in the inoperability of the safety-related 24-volt battery 1D670 that occurred on March 1, 2012. Specifically, because the engineer assigned to perform the Apparent Cause Evaluation (ACE) for the March 1, 2012, failure did not interview the technicians who performed the last weekly surveillance on the battery before the failure, PPL did not identify that the weekly testing procedure did not provide adequate instructions for restoring low battery electrolyte level. PPL entered this performance deficiency into their CAP as CR 1602339. The inspectors determined that this performance deficiency was more than minor because it affected the equipment performance attribute of the Mitigating Systems cornerstone and its objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, as evidenced by the events on March 1, 2012, the use of the inadequate procedure resulted in the inoperability of the 1D670 battery that supports operation of the safety-related source range and intermediate range instrumentation. The inspectors determined that the inadequate procedure problem was a condition adverse to quality. The inspectors screened this issue to Green via Inspection Manual Chapter 0609, Attachment 4 and Appendix A, because the finding does not represent a loss of system and/or function, does not represent an actual loss of function of at least a single train for greater than its technical specification allowed outage time or two separate safety systems out-of-service for greater than its technical specification allowed outage time, and does not represent an actual loss of function of one or more non-technical specification trains of equipment designated as high safety-significant in accordance with the licensees Maintenance Rule program for greater than 24 hrs. The inspectors determined that this finding had a crosscutting aspect in the area of problem identification and resolution, corrective action program, because PPL did not appropriately evaluate the unexpected inoperability of a safety-related battery such that a condition adverse to quality, the inadequate maintenance procedure that likely caused the battery inoperability, was identified and corrected |
| Site: | Susquehanna  |
|---|---|
| Report | IR 05000387/2012009 Section 4OA2 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | E Dipaolo C Bickett P Krohn J Greives |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
| ' | |
Finding - Susquehanna - IR 05000387/2012009 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Susquehanna) @ 2012Q3
Self-Identified List (Susquehanna)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||