05000456/FIN-2011003-09
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Finding | |
|---|---|
| Title | Incorrect Equipment Used During an Auxiliary Feedwater Suction Piping Flush Surveillance |
| Description | A finding of very low safety significance and an associated NCV of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, was self-revealed when incorrect equipment was used during an AF suction piping flush surveillance. Specifically, the use of an incorrect and unqualified drain hose resulted in the hose rupturing and spraying water onto nearby safety-related equipment, rendering the equipment inoperable until equipment tests could be performed. The licensee immediately terminated the flushing operation and entered this issue into the corrective action program as IR 1226235. The licensee also initiated a root cause evaluation to identify additional corrective actions. The inspectors determined that the use of an improper hose during an AF suction piping flush surveillance was a performance deficiency. This issue was determined to be more than minor in accordance with IMC 0612, Appendix B, Issue Screening, because it was associated with the Equipment Performance attribute of the Mitigating Systems Cornerstone and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). The inspectors determined the finding could be evaluated using the SDP in accordance with IMC 0609, Attachment 4, Phase 1 Initial Screening and Characterization of Findings. Using Table 2 of IMC 0609, Attachment 4, the inspectors determined that the finding affected the secondary short-term decay heat removal function of the Mitigating Systems Cornerstone. The inspectors answered No to all Mitigating Systems Cornerstone questions in Table 4a, Characterization Worksheet for Initiating Events, Mitigating Systems, and Barrier Integrity Cornerstone, and, as a result, the finding was determined to be of very low safety significance (Green). The inspectors determined that this finding had a cross-cutting aspect in the Work Practices component of the Human Performance cross-cutting area (H.4(a)) because when faced with the choice between two different hoses for a flushing activity, workers proceeded with the evolution in the face of uncertainty. |
| Site: | Braidwood  |
|---|---|
| Report | IR 05000456/2011003 Section 4OA3 |
| Date counted | Jun 30, 2011 (2011Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | A Garmoe D Betancourt E Duncan J Benjamin J Gilliam J Robbins M Perry N Adorno N Feliz Adorno R Ng T Bilik T Go V Meghani |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - Braidwood - IR 05000456/2011003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Braidwood) @ 2011Q2
Self-Identified List (Braidwood)
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