05000321/FIN-2017009-01
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | |
| Description | A self-revealing non-cited violation (NCV) of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, was identified for the licensees failure to establish measures to assure that corrective action was taken to preclude repetition of a significant condition adverse to quality (SCAQ). Specifically, the licensee failed to implement corrective actions that would have increased the reliability of the intermediate range monitoring (IRM) system and prevent repetitive reactor scrams for similar reasons. The licensee entered this issue in the CAP as CR 10356172.The failure to ensure corrective actions were taken for a SCAQ to preclude repetition of reactor scrams due to IRM spiking caused by external electronic noise was a performance deficiency. This performance deficiency is more-than-minor because it is associated with the equipment performance attribute of the Initiating Events Cornerstone and adversely affected the cornerstone objective because it resulted in a reactor scram, which upsets plant stability and challenges critical safety functions during shutdown as well as power operations. Using Inspection Manual Chapter 0609 Appendix A, the inspectors determined that this finding is of very low safety significance (Green) because it did not involve the loss of mitigation equipment per Exhibit 1.B Transient Initiators. The inspectors determined that the finding had a cross-cutting aspect of Conservative Bias (H.14) within the cross-cutting area of Human Performance because the licensee failed to use decision making-practices that emphasize prudent choices over those that are simply allowable. |
| Site: | Hatch  |
|---|---|
| Report | IR 05000321/2017009 Section 4OA3 |
| Date counted | Dec 31, 2017 (2017Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | A Ruh C Cheung G Croon S Sanchez A Blamey |
| Violation of: | 10 CFR 50 Appendix B Criterion XVI |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
| ' | |
Finding - Hatch - IR 05000321/2017009 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Hatch) @ 2017Q4
Self-Identified List (Hatch)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||