05000254/FIN-2009002-02
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Finding | |
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| Title | Failure to Follow Work Instructions for 2A Core Spray Check Valve |
| Description | A self-revealed finding of very low safety significance (Green) and NCV of Technical Specification 5.4.1.a was identified on January 15, 2009, when the 2A core spray pump discharge check valve, 2-1402-8A, failed to close. Specifically, the valve failed to close because mechanics did not follow work instructions and ensure the valve was assembled as required. Corrective actions for this event included repair of the valve, briefings with the licensee staff, reinforcement with the operating staff on the differences between operability and post-maintenance testing requirements, and revision of the steps in the model work order and the operations department surveillance procedure to more clearly delineate the acceptance criteria. The inspectors determined that the failure to follow the work instructions for the 2A core spray pump discharge check valve was more than minor because the non-conforming valve impacted the Mitigating Systems Cornerstone attribute of equipment performance to ensure the reliability and capability of the core spray system to respond to initiating events when returned to service. The inspectors concluded that the issue was of very low safety significance (Green) because the plant operators were able to manually perform the required function and thus maintain both functionality and operability of the system until the valve was repaired. The inspectors determined that failure to provide enough detail in the post-maintenance test acceptance criteria to ensure that the valve was able to perform as designed without operator assistance was a significant contributor to the valves subsequent return to service in a degraded condition. The inspectors concluded that this event is cross-cutting in Human Performance, Resources for failure to provide accurate procedures (H.2(c)). (Section 1R1 |
| Site: | Quad Cities  |
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| Report | IR 05000254/2009002 Section 1R19 |
| Date counted | Mar 31, 2009 (2009Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.19 |
| Inspectors (proximate) | G O 'Dwyerr Jickling R Langstaff C Matthews W Slawinski M Ring J Mcghee B Cushman J Coroju-Sandin |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Quad Cities - IR 05000254/2009002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Quad Cities) @ 2009Q1
Self-Identified List (Quad Cities)
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