05000219/FIN-2010008-04
From kanterella
Revision as of 21:49, 16 November 2017 by StriderTol (talk | contribs) (Created page by program invented by StriderTol)
Finding | |
|---|---|
| Title | Core Spray System I Pump Room Degraded Ball Float Drain Valve |
| Description | The team identified a finding of very low safety significance (Green) involving an NCVof 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, because Exelon did not identify and correct a condition adverse to quality. Specifically, Exelon did not identify and correct an impaired ball float drain valve that had the potential to adversely impact two safety-related core spray pumps during an internal flooding event. Exelon's short-term corrective actions included entering the issue into their corrective action program, remOVing the ball float valve impairment to restore functionality, and improving configuration control awareness. The finding is more than minor because it is associated with the configuration control attribute of the Mitigating Systems Cornerstone and adversely affected the cornerstone objective of ensuring the capability, availability and reliability of systems (core spray pumps) that respond to initiating events to prevent undesirable consequences. In accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Phase 1 - Initial Screening and Characterization of Findings, the finding screened as potentially risk significant. After additional SDP Phase 3 analysis, the team determined the finding was of very low safety significance (Green) because flood mitigation that was impacted by the finding would have minimal impact on redundant equipment required to safely shut down the unit. The performance deficiency had a cross-cutting aspect in the area of Problem Identification and Resolution, Corrective Action Program Component, because Exelon did not identify issues completely, accurately, and in a timely manner commensurate with their safety significance. Specifically, Exelon did not identify a degraded condition involving a non-functional ball float drain valve. [IMC 0310, Aspect P.1 (a)] |
| Site: | Oyster Creek |
|---|---|
| Report | IR 05000219/2010008 Section 1R21 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | C Cahill J Schoppy F Arner S Kobylarz S Spiegelman L Doerflein P Mckenna A Dugandzic |
| CCA | P.1, Identification |
| INPO aspect | PI.1 |
| ' | |
Finding - Oyster Creek - IR 05000219/2010008 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Oyster Creek) @ 2010Q3
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||