05000382/FIN-2011004-07
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Finding | |
|---|---|
| Title | Failure to Follow Apparent Cause Evaluation Process Procedure |
| Description | The inspectors identified a finding because the licensee did not implement procedure EN-LI-119, Apparent Cause Evaluation Process. Specifically, the licensee did not follow the requirements provided in procedure EN-LI-119, Section 5.3.3 (k), to complete corrective actions in a timely manner for the intersystem leakage in the gas waste management system. As a result, no corrective action implementation occurred prior to additional equipment failures for the system. The licensee entered this issue into their corrective action program for resolution as CR-WF3-2011-0934. The immediate corrective action included the reevaluation of the causal determination and development of an implementation plan to complete the corrective actions in a timely manner. The finding is more than minor because it is associated with the protection against external factors attribute of the Initiating Events cornerstone and affects the cornerstone objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. The intersystem leakage of the gas decay tanks increase the likelihood of a potential explosive mixture and continued to challenge technical specification oxygen concentration limits. The inspectors performed the initial significance determination using NRC Inspection Manual 0609, Attachment 0609.04, Phase 1 Initial Screening and Characterization of Findings. The Initial screening directed the inspectors to use Appendix F, Fire Protection Significance Determination Process, because the finding is a contributor to a fire initiation event. The inspectors assigned a degradation rating of low to the finding since the oxygen concentration levels in the gas decay tanks were below the limit of an explosive mixture. The inspectors determined that the finding is of very low safety significance (Green) because the finding minimally impacted the fire protection capabilities of the fire area. This finding has a cross-cutting aspect in the resources component of the human performance area in that the licensee did not minimize long-standing equipment issues and maintenance deferrals |
| Site: | Waterford  |
|---|---|
| Report | IR 05000382/2011004 Section 4OA2 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | M Davis S Garchow J Melfi R Azua D Overland E Uribe |
| CCA | H.6, Design Margins |
| INPO aspect | WP.2 |
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Finding - Waterford - IR 05000382/2011004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Waterford) @ 2011Q3
Self-Identified List (Waterford)
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