05000397/FIN-2012005-01
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Finding | |
|---|---|
| Title | Failure to Provide Maintenance Procedures for Control Room Emergency Ventilation System Dampers |
| Description | The inspectors reviewed a self-revealing non-cited violation of Technical Specification 5.4.1.a, Procedures, for failure to provide suitable work instructions for maintenance on control room emergency ventilation system dampers. On November 11, 2011, operations received an unexpected annunciator indicating that control room emergency filtration damper WMA-AD-51A was bound in an intermediate position. Subsequent review determined that the linkages were misaligned on February 21-22, 2007, which subjected the swivels to excessive spring forces causing them to slip over a period of time. The inspectors reviewed the maintenance task outline in Work Order 01126994 and identified that the work instructions did not have appropriate steps to ensure the alignment of linkages associated with damper WMA-AD-51A. The licensee entered this issue into the corrective action program as Action Request 252200. This performance deficiency was more than minor because it adversely affected the procedure quality attribute of the Barrier Integrity Cornerstone objective to ensure that physical design barriers protect the public from radionuclide releases caused by accidents or events. Using Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, the inspectors determined the finding was of very low safety significance because the finding only represented a degradation of the radiological barrier provided for by the control room. The inspectors determined that this finding did not have a cross-cutting aspect since the cause of the inadequate maintenance procedures was due to a performance deficiency that occurred in 2007, and therefore was not reflective of current licensee performance. |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2012005 Section 1R12 |
| Date counted | Dec 31, 2012 (2012Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | W Walker J Laughlin J Groom M Hayes C Henderson |
| INPO aspect | |
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Finding - Columbia - IR 05000397/2012005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2012Q4
Self-Identified List (Columbia)
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