05000254/FIN-2009003-04
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Finding | |
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| Title | Trip of Unit 2 Fuel Pool Cooling Water Pumps During Scorpion Platform Removal |
| Description | A finding of very low safety significance and NCV of 10 CFR 50.65 (a)(4) were self-revealed on May 11, 2009, when the licensee staff failed to manage water level in the spent fuel pool and associated skimmer surge tanks resulting in the Unit 2 fuel pool cooling pumps tripping off while removing the Scorpion platform from the Unit 1 reactor cavity. Immediate corrective actions for this event included refilling the skimmer surge tank and restarting the fuel pool cooling pumps to restore alternate decay heat removal. The inspectors determined that the failure to take adequate action to manage the risk associated with a maintenance activity with a potential to affect a key shutdown safety function was a performance deficiency and a finding. Inspectors determined that the finding was cross-cutting in the area of Human Performance Work Control for failure to coordinate work activities by incorporating actions to adequately address the need for work groups to communicate, coordinate and cooperate with each other during activities in which interdepartmental coordination is necessary to assure plant and human performance (H.3(b)).The inspectors determined the finding was more than minor because the failure to implement the management actions resulted in the critical safety function being degraded and the issue is associated with 10 CFR 50.65(a)(4) risk management. The inspectors performed a Phase 1 SDP evaluation and determined that the issue is Green because the Unit 1 pumps remained running with no issues during the event and plant operators were able to recover the Unit 2 cooling pumps before any discernable change in temperature occurred (answer to all questions of IMC 0609, Attachment 4, Table 4a, Mitigating Systems Cornerstone and Barrier Cornerstone were no and the issue screened as Green). Since the finding concerned risk management actions, the inspectors verified the finding was Green using IMC 0609, Appendix K flowcharts and validated that there was no change in risk thresholds as a result of the event |
| Site: | Quad Cities  |
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| Report | IR 05000254/2009003 Section 4OA3 |
| Date counted | Jun 30, 2009 (2009Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | C Matthews W Slawinski M Ring D Jones J Mcghee E Coffman B Cushman |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Quad Cities - IR 05000254/2009003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Quad Cities) @ 2009Q2
Self-Identified List (Quad Cities)
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