05000346/FIN-2015008-05
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Finding | |
|---|---|
| Title | Failure to Comply with Technical Specifications for the Borated Water Storage Tank |
| Description | The inspectors identified a finding of very-low safety significance (Green), and an associated NCV of TS 3.5.4, Borated Water Storage Tank (BWST), for the failure to comply with the limiting condition for operation (LCO) while the BWST was aligned to the non-seismic spent fuel pool purification system, causing the BWST to be inoperable based on no longer meeting the tanks seismic requirement. The licensee entered this finding into their CAP, and initiated an LCO Tracking Log entry to not place the BWST on spent fuel pool purification in Modes 1 through 4. The finding was determined to be more than minor because it was associated with the Mitigating Systems attribute of Protection Against External Factors, and affected th
cornerstones objective of ensuring the availability, reliability, and capability of systems to respond to initiating events to prevent undesirable consequences. The finding resulted in the loss of system safety function (i.e., the BWST). The finding screened as of very-low safety significance (Green) based on a SDP Phase II analysis that determined the ?CDF for the finding was 1.17E-7/yr. This finding has a cross-cutting aspect in the area of Problem Identification and Resolution because recent operating experience was not adequately evaluated to prevent the identified finding. |
| Site: | Davis Besse  |
|---|---|
| Report | IR 05000346/2015008 Section 1R21 |
| Date counted | Mar 31, 2015 (2015Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | A Dunlop C Baron C Lipa G O'Dwyer N Valos S Kobylarz S Sheldon |
| Violation of: | Technical Specification |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Davis Besse - IR 05000346/2015008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Davis Besse) @ 2015Q1
Self-Identified List (Davis Besse)
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