05000298/FIN-2008004-04
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Finding | |
|---|---|
| Title | Failure to Restore Standby Gas System to Standby Lineup |
| Description | A self-revealing Green NCV of TS 5.4.1.a was identified regarding the licensees failure to follow the requirements of General Operating Procedure 2.1.22, Recovering from a Group Isolation. Specifically, control room operators failed to restore Train B of the standby gas treatment (SGT) system to its standby lineup following a planned group isolation. This error rendered one train of the SGT system inoperable for approximately 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. The licensee entered this issue into their corrective action program as Condition Report CR-CNS-2008- 04956. The finding is more than minor because it is associated with the configuration control attribute of the Mitigating Systems Cornerstone, and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events. Using the Manual Chapter 0609 Phase 1 Screening Worksheet, the inspectors determined that the finding has very low safety significance because it did not result in the loss of Train B of SGT for longer than its technical specification allowed outage time. The cause of this finding is related to the human performance cross cutting component of Work Practices because control room operators failed to utilize appropriate self checking techniques when implementing Procedure 2.1.22 H.4(a) |
| Site: | Cooper  |
|---|---|
| Report | IR 05000298/2008004 Section 4OA5 |
| Date counted | Sep 30, 2008 (2008Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | |
| Inspectors (proximate) | N Taylor P Elkmann J Hanna G Miller M Chambers J Everett |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
| ' | |
Finding - Cooper - IR 05000298/2008004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cooper) @ 2008Q3
Self-Identified List (Cooper)
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