05000293/FIN-2011004-03
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Finding | |
|---|---|
| Title | Failure to Accurately Assess Risk of Maintenance on Standby Gas and Secondary Containment |
| Description | The inspectors identified a Green NCV of 10 CFR 50.65(a)(4) because Entergy did not assess and manage risk during elective maintenance for both \'A\' and \'B\' trains of the StandBy Gas Treatment (SBGT) system. Specifically, Entergy did not consult qualitative guidance in their risk assessment process procedures before removing both trains of SBGT from service and, therefore, removing the Secondary Containment key safety function while online. Corrective actions planned include evaluating and revising risk assessment procedures, and communicating qualitative risk assessment guidance to Senior Reactor Operators and Work Week Managers. A review of NRC Inspection Manual Chapter (IMC) 0612, Appendix E, Minor Examples, identified that Section 7, Maintenance Rule, Example e, reflected a similar more than minor example. This finding was determined to be more than minor because Entergy\'s risk assessment failed to account for the loss or significant uncompensated impairment of a key operating safety function. In addition, the finding affected the Human Performance attribute of the Barrier Integrity cornerstone\'s objective to ensure that physical design barriers (containment) protect the public from radionuclide releases caused by accidents or events. The inspectors performed an evaluation in accordance with IMC 0609, Significance Determination Process, Attachment 4, Phase 1 -Initial Screening and Characterization of Findings, and determined that the finding was of very low safety significance (Green) because the finding only represented a degradation of the radiological barrier function provided for the SBGT system. The inspectors determined that this finding had a cross-cutting aspect in the Human Performance crosscutting area, Work Control component, because Entergy did not plan work activities by incorporating appropriate risk insights |
| Site: | Pilgrim |
|---|---|
| Report | IR 05000293/2011004 Section 1R13 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.13 |
| Inspectors (proximate) | S Barr R Rolph B Smith M Schneider R Bellamy |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Pilgrim - IR 05000293/2011004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Pilgrim) @ 2011Q3
Self-Identified List (Pilgrim)
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