05000456/FIN-2009005-05
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Finding | |
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Title | Failure to Follow Maintenance Procedures and Work Instructions |
Description | The inspectors identified a Green finding and an associated Non-Cited Violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, related to post maintenance testing. Specifically, the licensee failed to follow maintenance procedures and work instructions by performing the post maintenance testing prior to completing work on the 2B Auxiliary Feedwater Pump Essential Service Water cooling water supply. As part of the corrective actions for this issue, the licensee retested the valve and revised the affected surveillance test procedure. The inspectors concluded that the finding was more than minor because the licensee returned equipment to an operable status following maintenance without performing required testing. Licensee Procedure MA-AA-716-012, Post Maintenance Testing, Revision 11, requires that post maintenance testing shall be performed following any corrective and some preventive maintenance activities on plant equipment that may have impacted the equipments ability to perform its intended function. The performance of a flow scan may impact the stroke time of a valve, therefore post maintenance testing was required following completion of the flow scan testing. Using the Significance Determination Process Phase 1 worksheet of IMC 0609.04, the inspectors determined the finding affected the Core Decay Heat Removal attribute of the Mitigation Systems Cornerstone. Because subsequent testing confirmed that no loss of operability or functionality existed the finding was determined to be of very low safety significance. The finding has a cross-cutting aspect in the area of Human Performance, Work Control, because the licensee performed work packages out of sequence, thereby allowing a safety system to be returned to service without the required post maintenance testing after completion of all work (H.3.(b)) |
Site: | Braidwood ![]() |
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Report | IR 05000456/2009005 Section 1R19 |
Date counted | Dec 31, 2009 (2009Q4) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.19 |
Inspectors (proximate) | A Garmoe B Dickson B Metrow B Palagi J Gall M Holmberg M Mitchell M Perry R Jickling R Ng R Skokowski |
CCA | H.5, Work Management |
INPO aspect | WP.1 |
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Finding - Braidwood - IR 05000456/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Braidwood) @ 2009Q4
Self-Identified List (Braidwood)
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