05000250/FIN-2010008-05
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Finding | |
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| Title | |
| Description | The inspectors identified an AV of Technical Specification 5.5.1.1.a and 10 CFR50.68(b)(4) for failure to assure that the effective neutron multiplication factor (Keff) would be maintained equivalent to less than 1.0, for all cases in the Unit 3 spent fuel pool(SFP) when flooded with unborated water. The finding was more than minor because, if left uncorrected, the racks would continue to degrade further reducing the neutron absorption capability and become a more significant safety concern. In addition, the finding impacted the initiating event cornerstone objective of limiting events that challenge safety functions; for example, preventing criticality in an area not designed for criticality. Because probabilistic risk assessment tools were not suited for this finding, the inspectors evaluated the finding using IMC 0609, Appendix M, Significance Determination Process Using Qualitative Criteria. Because the Boraflex degradation resulted in a significant loss of margin to criticality, NRC management concluded the finding was preliminarily greater than Green. The inspectors determined that the cross-cutting aspect of Problem Identification and Resolution, (P.1(c)) is applicable to this issue because the licensee did not properly evaluate the problems associated with Boraflex degradation to assure operability and reportability was adequately addressed |
| Site: | Turkey Point  |
|---|---|
| Report | IR 05000250/2010008 Section 4OA2 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | AV: |
| cornerstone | No Cornerstone |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | J Stewart M Barillas M Sykes P Higgins S Ninh |
| CCA | H.2, Field Presence |
| INPO aspect | LA.2 |
| ' | |
Finding - Turkey Point - IR 05000250/2010008 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Turkey Point) @ 2010Q1
Self-Identified List (Turkey Point)
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