05000282/FIN-2009004-05
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Finding | |
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| Title | Failure to Have Work Instructions Appropriate to the Circumstance for Performing Maintenance on the Generator Bearing Oil Sight Class for the D1 Emergency Diesel Generator |
| Description | A self-revealed finding of very low safety significance and a Non-Cited Violation of Technical Specification 5.4.1 was identified on April 5, 2009, due to the failure to ensure that maintenance affecting the performance of the D1 emergency diesel generator was properly preplanned and performed in accordance with instructions, procedures and drawings appropriate to the circumstance. Specifically, the work instructions used to perform maintenance on the generator bearing oil sight glass in January 2009 failed to include directions to install the sight glass o-rings. The failure to install the o-rings led to a sight glass failure and the unplanned inoperability of the D1 emergency diesel generator. Corrective actions for this issue included replacing the sight glass and revising the model work order instructions to include the o-ring installation. The inspectors determined that this finding was more than minor because it was associated with the equipment performance and procedure quality attributes of the Mitigating Systems cornerstone. In addition, this finding impacted the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. This finding was determined to be of very low safety significance because it was not a design deficiency, did not result in a loss of system safety function for greater than the Technical Specification allowed outage time, was not an actual loss of safety function of one or more non-Technical Specification trains of equipment designated as risk-significant per 10 CFR 50.65 for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and did not screen as a potentially significant seismic, flooding, or severe weather issue. No cross-cutting aspect was identified |
| Site: | Prairie Island  |
|---|---|
| Report | IR 05000282/2009004 Section 4OA3 |
| Date counted | Sep 30, 2009 (2009Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | C Moore C Thomas D Betancourt D Mcneil F Tran J Giessner K Stoedter M Holmberg M Thorpe Kavanaugh N Valos P Zurawski R Jickling |
| INPO aspect | |
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Finding - Prairie Island - IR 05000282/2009004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Prairie Island) @ 2009Q3
Self-Identified List (Prairie Island)
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