05000461/FIN-2017002-06
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Finding | |
|---|---|
| Title | Failure to Perform Preventive Maintenance on a Safety - Related Breaker Cubicl |
| Description | Green . The inspectors identified a finding of very low safety significance for the licensees failure to perform maintenance on a safety -related motor control center cubicle. Specifically, the licensee failed to perform thermography on the division 1 shutdown service water pump room cooler breaker cubicle in accordance with the maintenance strategy/template without providing justification for differing from the template as required by MA AA 716 210, Performance Centered Maintenance Process , Revision 3. This resulted in the division 1 shutdown service water pump room cooler fan failing because of a high resistance connection that went undetected. The licensee entered this issue into their CAP as AR 02667822. As corrective actions, the licensee replaced the thermal overload relays and created a preventative maintenance action to perform thermography on this equipment on a periodic basis. This performance deficiency was determined to be more than minor because it impacted the Mitigating Systems cornerstone attribute of equipment performance and adversely affected the cornerstone objective of ensuring the availability, capability and reliability of equipment that responds to initiating events. Specifically , the room cooler fan failure directly impacted the operability of the division 1 shutdown service water pump and the 4 division 1 emergency diesel generator which are safety -related, risk significant systems. The finding was screened against the Mitigating Systems cornerstone and determined to be of very low safety significance because the inspectors were able to answer all of the associated screening questions No. The inspectors determined that this finding is not indicative of current plant performance and therefore did not assign a cross -cutting aspect. |
| Site: | Clinton  |
|---|---|
| Report | IR 05000461/2017002 Section 4OA2 |
| Date counted | Jun 30, 2017 (2017Q2) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | W Schaup E Sanchez-Santiago M Doyle S Bell G Edwards V Meghani L Torres S Mischke K Stoedter |
| INPO aspect | |
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Finding - Clinton - IR 05000461/2017002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Clinton) @ 2017Q2
Self-Identified List (Clinton)
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