05000354/FIN-2013007-02
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Failure to Take Timely Corrective Action for an Identified Design Deficiency with the CR HVAC System |
| Description | The inspectors identified a Green NCV of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, because PSEG failed to promptly correct a design deficiency in the control room chilled water circulating low flow pump trip logic. Specifically, PSEG failed to take timely action to develop and implement a modification to add a 10 second time delay to the pump trip logic. PSEGs corrective actions included entering this issue into their corrective action program as notification 20567269, conducting an apparent cause investigation, and developing and implementing design change packages to modify the low flow control room air conditioning chilled water circulating pump trip logic. This finding is more than minor because it is associated with the systems, structures, and components (SSC) and barrier performance attribute of the barrier integrity cornerstone, and affected the cornerstone objective of maintaining the radiological barrier functionality of the control room. In accordance with IMC 0609.04, Initial Characterization of Findings, and Exhibit 3 of IMC 0609, Appendix A, The Significance Determination Process (SDP) for Findings at Power, issued June 19, 2012, the inspectors determined that this finding is of very low safety significance (Green) because the performance deficiency represents a degradation of only the radiological barrier function provided for the control room. This finding does not have a cross-cutting aspect associated with it because, although the performance deficiency occurred within the last three years, the performance characteristic associated with the untimely corrective action for this deficiency is not indicative of PSEGs current performance. PSEG demonstrated improved performance in response to trips of the A control room ventilation in June and July 2012 caused by chilled water pump low flow by taking timely corrective action to develop and implement a design change package for the modification to the low flow trip logic that had been identified in 2011. PSEG also identified an additional deficiency in the low flow trip logic and took timely action to correct it in mid- 2012. Additionally, since PSEG identified that a modification to the low flow pump trip logic was necessary, PSEG has implemented a new station process in the fall of 2012, ER-AA- 2001-1001, Evaluation of Equipment Reliability Strategies, to evaluate the timeliness, effectiveness, and mitigating actions of proposed strategies developed for equipment reliability based on risk significance. Based on demonstrated improved performance in recent months as well as this new station process, which would have increased the priority and accelerated the implementation of these modifications, it is unlikely that this performance deficiency would occur again under similar circumstances. |
| Site: | Hope Creek  |
|---|---|
| Report | IR 05000354/2013007 Section 4OA2 |
| Date counted | Mar 31, 2013 (2013Q1) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | D Schroeder J Schoppy S Ibarrola T Ziev |
| Violation of: | 10 CFR 50 Appendix B Criterion XVI |
| INPO aspect | |
| ' | |
Finding - Hope Creek - IR 05000354/2013007 | ||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Hope Creek) @ 2013Q1
Self-Identified List (Hope Creek)
| ||||||||||||||||||||||||||||||||||||||