05000244/FIN-2017004-01
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Finding | |
|---|---|
| Title | Inadequate Component Monitoring Relating to Online Risk Management and Assessment |
| Description | The inspectors identified a finding because Exelon personnel did not follow Procedure WC-AA-101-1006, On-Line Risk Management and Assessment, Revision 2 to sufficiently monitor components such that the latest information was used to evaluate plant risk. Specifically, on December 27, 2017, Exelon failed to sufficiently monitor the diesel driven air compressor, commensurate with its operating history, such that a failure would be assessed and updated in the current plant risk assessment. Exelon entered this issue into the corrective action program (CAP) for resolution as action request (AR) 0487519. Corrective actions included declaring the diesel driven air compressor non-functional, transitioned to Yellow online plant risk, and completed restoration of the C Instrument Air Compressor.This finding is more than minor because it is associated with the configuration control attribute of the Initiating Events cornerstone and adversely affected the associated cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. Additionally, this issue is similar to Example 7.f of IMC 0612, Appendix E, Examples of Minor Issues, issued August 11, 2009, because the overall elevated plant risk placed the plant into a higher licensee-established risk category. The inspectors evaluated this finding using IMC 0609, Appendix K, Maintenance Risk Assessment and Risk Management Significance Determination Process, to determine the significance of the finding. The inspectors used Flowchart 2, Assessment of [risk management actions] RMAs, to analyze the finding and calculated the incremental large early release probability using PARAGON, Exelons risk assessment tool, and found the increase in incremental large early release probability was less than 1E-7. The inspectors determined that if this condition existed for the full duration of the maintenance period, the large early release probability would have been 2.22E-7. Because the increase in incremental large early release probability, was less than 1E-7, this finding was determined to be of very low safety significance (Green). This finding has a cross-cutting aspect in the area of Human Performance, Avoid Complacency, because Exelon did not recognize and plan for the possibility of mistakes, latent issues and inherent risk, even while expecting successful outcomes. Specifically, Exelon did not ensure a component used to manage and assess risk was monitored at a frequency commensurate with its past performance. [H.12] |
| Site: | Ginna  |
|---|---|
| Report | IR 05000244/2017004 Section 1R13 |
| Date counted | Dec 31, 2017 (2017Q4) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.13 |
| Inspectors (proximate) | N Perry J Schussler K Mangan S Horvitz J Patel P Ott S Obadina A Dimitriadis |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - Ginna - IR 05000244/2017004 | |||||||||||||||
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Finding List (Ginna) @ 2017Q4
Self-Identified List (Ginna)
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