05000282/FIN-2008005-05
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Finding | |
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| Title | Decrease in Reactor Power due to Failure to Follow Procedures |
| Description | A finding of very low safety significance and an NCV of 10 CFR Part 50, Appendix B, Criterion V, was self-revealed on November 6, 2008, due to instrumentation and controls technicians failing to follow procedures during calibration of the power range nuclear instruments. The failure to follow procedures resulted in the uncontrolled movement of the Unit 2 control rods and a six percent reduction in reactor power. Corrective actions for this issue included removing the technicians qualifications, conducting remedial training, performing a site-wide stand down to reinforce procedure use and adherence, and providing additional oversight of control room activities for several days. The inspectors determined that the finding was more than minor because it caused a plant transient and if left uncorrected, it would become a more significant safety concern that could result in additional plant transients, testing errors, and the failure to properly operate equipment. The inspectors determined that this finding was of very low safety significance because it did not contribute to both the likelihood of a reactor trip and that mitigating systems equipment would not be available. The inspectors concluded that this finding was cross-cutting in the Human Performance, Decision Making area because the technicians failed to use the systematic process for implementing procedures to ensure that nuclear safety was maintaine |
| Site: | Prairie Island  |
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| Report | IR 05000282/2008005 Section 1R22 |
| Date counted | Dec 31, 2008 (2008Q4) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.22 |
| Inspectors (proximate) | D Mcneil G O'Dwyer J Giessner K Stoedter L Haeg P Zurawski R Jickling R Winter T Bilik |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Prairie Island - IR 05000282/2008005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Prairie Island) @ 2008Q4
Self-Identified List (Prairie Island)
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