05000315/FIN-2012004-01
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Finding | |
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| Title | Failure to Properly Preplan and Perform Maintenance on Safety-related Equipment |
| Description | The inspectors identified a finding of very low safety significance with an associated NCV of Technical Specification (TS) 5.4.1 for the failure to implement procedures to perform preventative maintenance in vaults containing safety related cabling subject to water intrusion. Specifically, licensee personnel failed to ensure the cables were not wetted as required by PMI-5053, Cable Management Program. Cables were on the ground in the vaults exposing the cables to periodic wetting, which will degrade the cable insulation. On August 27, 2012, the inspectors noted that cables in one vault were on the ground and the vault showed evidence of periodic wetting of the cables. For corrective action, the licensee is performing an apparent cause evaluation; inspecting all cable vaults that have had safety-related cabling elevated since February 2010; and raising and re-securing cabling in vaults subject to water intrusion. This issue was entered into the licensees corrective action program as AR 2012-10680. This finding affected the Mitigating Events Cornerstone and was more than minor because the issue could become a more significant safety concern if left uncorrected. Specifically, failure to properly perform preventative maintenance in vaults containing safety-related cables subjected to water intrusion resulted in periodic wetting of cables. Wetting of cables has led to degradation of cable insulation at nuclear facilities. The inspectors used IMC 0609, Significance Determination Process, Attachment 4, Initial Characterization of Findings, which directed the inspectors to Exhibit 2, Mitigating Systems Screening Questions, of Appendix A, to determine significance. This finding was of very low safety significance (Green) because the finding constituted a design or qualification deficiency but did not result in a loss of system safety function. This finding is associated with a cross-cutting aspect in the work control component of the human performance cross-cutting area. Specifically, engineering did not appropriately plan for maintenance personnel to assist with lifting the floor grating to ensure visual inspections were adequately performed. |
| Site: | Cook  |
|---|---|
| Report | IR 05000315/2012004 Section 1R06 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.06 |
| Inspectors (proximate) | M Mitchell J Lennartz J Neurauter J Ellegood V Meghani R Temps P Laflamme M Learn C Morrell R Edwards J Parrot |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Cook - IR 05000315/2012004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cook) @ 2012Q3
Self-Identified List (Cook)
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