Finding | |
|---|---|
| Title | Inappropriate Application of 10 CFR 50.59 |
| Description | The team identified a Non-Cited Violation of 10 CFR 50.59, \"Changes, Tests and Experiments.\" Specifically, the license
failed to preform an adequate evaluation of a defacto modification to the plant where the underlying change may have required NRC approva prior to implementation. The design change involved degraded or missing physical barriers that could result in one or more of the diese generators failing to fulfill their design function during a tornado. Following discovery, the licensee entered the issue into the corrective actio program and re-performed the analysis. The licensee also repaired those barriers which were physically degraded. The primary cause of thi violation was related to the cross-cutting area of human performance as the licensee appeared to selectively choose information from th guidance document in order to achieve the desired outcome Because this issue affected the NRC's ability to perform its regulatory function, this finding was evaluated with the traditional enforcemen process. The finding was determined to be of very low safety significance based on a significance determination process analysis of a loss o offsite power concurrent with loss of one emergency diesel generator. (Section 4OA3(3)b.23) |
| Site: | Davis Besse  |
|---|---|
| Report | IR 05000346/2003010 Section 4OA3 |
| Date counted | Mar 31, 2004 (2004Q1) |
| Type: | TEV: Severity level IV |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | O Mazzoni P Lougheed R Daley W Bennett Z Falevits A Walker B Sherbin D Chyu F Baxter J Lara J Panchison M Farber |
| INPO aspect | |
| ' | |
Finding - Davis Besse - IR 05000346/2003010 | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Davis Besse) @ 2004Q1
| |||||||||||||||||