05000354/FIN-2010005-01
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | RHR Heat Exchanger Deficient Operability Evaluation |
| Description | The inspectors identified a finding for a deficient operability evaluation involving leakage from the residual heat removal (RHR) system into the reactor building through a degraded gasket on the B RHR heat exchanger (HX). PSEG\\\'s operability evaluation did not fully account for the continuing degradation of the condition, and would have allowed the leakage rate from the HX to exceed the value analyzed in a supporting technical evaluation. Consequently, during the assumed mission time for the HX following a postulated accident, the post-accident control room dose could have exceeded the regulatory limit of 5 Rem. PSEG\\\'s corrective actions included revising both the operability and technical evaluations and completing repairs to the RHR HX. This finding is associated with the structure, system, and component (SSC) and barrier performance (Containment) attributes of the Barrier Integrity cornerstone and adversely affected the cornerstone objective of providing reasonable assurance that physical design barriers protect the public from radionuclide releases caused by accidents or events. Specifically, the performance deficiency is similar to IMC 0612, Appendix E, Example 3i, that states an issue with accident analysis calculations is more than minor if the calculations needed to be re-performed to assure accident analysis requirements were met. In this case, accident analysis calculations were re-performed to assure control room dose requirements were met. The inspectors determined that the finding was Green, based on a Phase 2 SDP review using Appendix H, Containment Integrity. The finding had a cross-cutting aspect in the area of problem identification and resolution, because PSEG did not thoroughly evaluate the degraded condition on the B RHR HX, including classifying, prioritizing, and evaluating for operability. Specifically, PSEG\\\'s operability evaluation did not fully account for the dose impact of increased leakage during the post-accident mission time of the RHR HX. |
| Site: | Hope Creek  |
|---|---|
| Report | IR 05000354/2010005 Section 1R15 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | Finding: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | M Patel J Furia T Fish E Gray A Patel A Burritt L Kern |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
| ' | |
Finding - Hope Creek - IR 05000354/2010005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Hope Creek) @ 2010Q4
Self-Identified List (Hope Creek)
| |||||||||||||||||||||||||||||||||||||||||||||||||||||