05000454/FIN-2011002-01
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Auxiliary Feedwater Pump Heat Exchanger Configured Incorrectly |
| Description | An NRC-identified finding of very low safety significance and an associated NCV of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, was identified by the inspectors when licensee personnel failed to install the Unit 1 Train B auxiliary feedwater pump lube oil heat exchanger end bell in accordance with design drawings. The finding was determined to be more than minor because the finding was associated with the Mitigating Systems Cornerstone attribute of Configuration Control and affected the cornerstone objective of ensuring the capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). Specifically, the as-found orientation of the heat exchanger end bell was not consistent with design drawings and adversely affected the performance of the auxiliary feedwater pump lube oil heat exchanger. The inspectors determined the finding could be evaluated using the SDP in accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Phase 1 - Initial Screening and Characterization of Findings, Table 4a, for the Mitigating Systems Cornerstone. The inspectors determined that the finding was a design or qualification deficiency confirmed not to result in a loss of operability or functionality. This conclusion was reached after reviewing an analysis performed by the licensee that concluded the auxiliary feedwater system would perform its safety-related function with the lube oil heat exchanger end bell in the as-found and as-installed configuration. The licensee subsequently restored the configuration, consistent with design drawings. Due to the age of this issue, it was not determined to be reflective of current licensee performance and therefore a cross-cutting aspect was not assigned to this finding. |
| Site: | Byron  |
|---|---|
| Report | IR 05000454/2011002 Section 1R07 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.07 |
| Inspectors (proximate) | R Ng C Thompson B Bartlett J Robbins J Cassidy M Jones E Duncan J Gilliam W Lyon C Tilton J Miller J Whitman |
| INPO aspect | |
| ' | |
Finding - Byron - IR 05000454/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Byron) @ 2011Q1
Self-Identified List (Byron)
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||