05000315/FIN-2013004-01
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Finding | |
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| Title | Unit 2 Steam Generator #1 Stop Valve Dump Valve 2-MRV-212 Stroke Time Failure due to Operation of Dump Valve Outside its Packing Design |
| Description | A self-revealed finding of very low safety significance (Green) and associated NCV of Technical Specification (TS) 5.4.1 occurred because the licensee failed to establish, implement, and maintain procedures regarding proper steam generator stop valve dump valve preventative maintenance. Specifically, the licensee improperly packed Unit 2 steam generator #1 stop valve dump valve, 2-MRV-212, which resulted in three consecutive in-service test surveillance testing failures, (October 26, 2012, January 26, 2013, and April 25, 2013). Each testing failure resulted in the valve being declared inoperable. The testing failures occurred because the maintenance procedure used during the valve packing activity, 12-MHP-5021-005-003, Valve Packing Removal, Installation and Adjustment, did not provide instructions on the appropriate number of packing rings to be installed. Corrective action included repacking the valve with the correct number of packing rings and initiating corrective action document AR 2013-6243. Using IMC 0612, the inspectors determined that this issue was more than minor because it was associated with the equipment performance attribute of the Mitigating Systems Cornerstone and it impacted the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to events. Specifically, the performance deficiency resulted in an inoperable steam generator stop valve dump valve. The inspectors determined that this issue was of very low safety significance (Green) because the inspectors answered no to all the screening questions in IMC 0609, Appendix A, Exhibit 2. The inspectors concluded that this issue had an aspect in the Corrective Action Program component of the Problem Identification and Resolution cross-cutting area, because the licensee failed to correct the cause of the slow stroke time on two prior surveillance failures. |
| Site: | Cook  |
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| Report | IR 05000315/2013004 Section 1R12 |
| Date counted | Sep 30, 2013 (2013Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | D Szwarc M Mitchell J Lennartz J Benjamin J Ellegood P Laflamme |
| Violation of: | Technical Specification - Procedures Technical Specification |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Cook - IR 05000315/2013004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cook) @ 2013Q3
Self-Identified List (Cook)
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