05000272/FIN-2011007-01
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Finding | |
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| Title | Inadequate Calculations for Degraded Voltage Relay Voltage Setpoint |
| Description | The team identified a finding of very low safety significance involving a non-cited violation of 10 CFR 50, Appendix B, Criterion III. \\\"Design Control,\\\" because PSEG had not verified the adequacy of the design for the DVR voltage setpoint. Specifically, PSEG had not performed calculations for motor starting and running conditions, and for operation of other safety-related equipment based on voltages afforded by the degraded voltage relays. PSEG entered this issue into their corrective action program and performed preliminary calculations to demonstrate reasonable assurance of operability. The finding is more than minor because it is associated with the design control attribute of the Mitigating Systems Cornerstone and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The team evaluated the finding in accordance with IMC 0609, Attachment 0609.04, Phase 1 - Initial Screening and Characterization of Findings, Table 4a for the Mitigating Systems Cornerstone. The team determined that the finding was of very low safety significance because it was a design deficiency confirmed not to result in loss of operability. The team determined that this finding has a cross-cutting aspect in the area of Problem Identification and Resolution, Operating Experience Component, because PSEG did not ensure that relevant internal and external operating experience was collected, evaluated, and communicated to affected internal stakeholders in a timely manner. Specifically, PSEG did not adequately evaluate a similar finding documented in a Hope Creek Generating Station NRC component design bases inspection report in November 2009 (NCV 0500354/2009007-03) and missed an opportunity in their internal response to NRC Information Notice 2008-02, \\\"Findings Identified During Component Design Bases Inspections,\\\" issued in March 2008. (IMC 0310, Aspect P.2(a)) |
| Site: | Salem  |
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| Report | IR 05000272/2011007 Section 1R21 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | R Montgomery K Mangan G Skinner J Schoppy D Orr L Doerflein C Edwards |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Salem - IR 05000272/2011007 | |||||||||||||||||||||||||||||
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Finding List (Salem) @ 2011Q1
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