05000335/FIN-2012008-01
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Finding | |
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| Title | Inadequate Procedure for Severe Weather Mitigation |
| Description | The team identified a non-cited violation of Technical Specification 6.8, Procedures and Programs, for an inadequate technical specification required procedure to combat a loss of feedwater or feedwater system failure. Abnormal operating procedure 1-AOP-09.02, Auxiliary Feedwater, Attachment 5, Supplying Unit 1 AFW Pumps from the Unit 2 CST, could not be performed as written with respect to ensuring the availability of the Auxiliary Feedwater (AFW) pumps. The licensee promptly issued a standing night order to ensure that the AFW pumps would remain available and initiated action requests 1816711 and 1826000. The licensee has subsequently modified the procedure to rectify the issue. The licensees failure to provide an adequate procedure to mitigate a design basis event was a performance deficiency. The performance deficiency affected the Mitigating Systems Cornerstone objective to ensure the availability, reliability and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, procedure 1-AOP-09.02, secured all suction sources to the AFW pumps without ensuring that the motor driven auxiliary feedwater (MDAFW) pumps would not auto start if an auxiliary feedwater actuation signal was received. The performance deficiency was determined to have more than minor safety significance because if left uncorrected, the failure of the MDAFW pumps could lead to a more significant safety concern as a result of the plant not being able to sustain short-term decay heat removal under specific conditions. The procedure steps created a condition that could have resulted in the inoperability of both MDAFW pumps. In accordance with NRC Inspection Manuel Chapter 0609.04, Initial Screening and Characterization of Findings, the team determined that a detailed risk evaluation was required because the finding screened as potentially risk-significant due to a severe weather initiating event. A bounding Significance Determination Process Phase 3 analysis was performed by a regional senior risk analyst which determined the performance deficiency was a Green finding of very low safety significance. The inspectors determined that no cross cutting aspect was applicable to this performance deficiency because this finding was not indicative of current licensee performance. |
| Site: | Saint Lucie  |
|---|---|
| Report | IR 05000335/2012008 Section 1R21 |
| Date counted | Dec 31, 2012 (2012Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | W Sherbin S Rose S Kobylarz R Patterson R Nease T Fanelli A Butcavage J Heisserer |
| INPO aspect | |
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Finding - Saint Lucie - IR 05000335/2012008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Saint Lucie) @ 2012Q4
Self-Identified List (Saint Lucie)
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