SVPLTR 15-0020, Written Position on Preliminary White Finding Discussed in NRC Inspection Report 05000237/2014005; 05000249/2014005
| ML15076A197 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 03/02/2015 |
| From: | Marik S Exelon Generation Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| EA-15-001, IR 2014005, SVPLTR# 15-0020 | |
| Download: ML15076A197 (2) | |
Text
ADresden Nuclear Power Station 6500 North Dresden Road Exe!.on Generation.
Morris, IL 60450 815 942 2920 Telephone www.exeloncorp.com SVPLTR#
15-0020 March 2, 2015 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Dresden Nuclear Power Station, Unit 3 Renewed Facility Operating License No. DPR-25 NRC Docket No. 50-249
Subject:
Written Position on Preliminary White Finding Discussed in NRC Inspection Report 05000237/2014005; 05000249/2014005
References:
- 1. Letter from A. Boland (U. S. NRC) to B. Hanson (Exelon Generation Company, LLC (EGC)), "Dresden Nuclear Power Station, Units 2 and 3, Integrated Inspection Report 05000237/2014005; 05000249/2014005 and.
Preliminary White Finding," dated January 29, 2015
- 2. Letter from S. Marik (EGC) to J. Cameron (U. S. NRC), "Response to NRC Integrated Inspection Report 05000237/2014005; 05000249/2014005,"
dated February 9, 2015 Reference 1 describes an NRC-identified finding concerning the Dresden Nuclear Power Station (DNPS), Unit 3 'E' Electromatic Relief Valve's (ERV's) inability to perform its intended safety function. The issue was preliminarily determined to be a White finding. Exelon Generation Company, LLC (EGC) was provided 10 days to choose to: (1) attend a Regulatory Conference, or (2) Submit a position on the finding in writing. In Reference 2, EGC responded in writing stating the intention to provide a written response regarding the preliminary White finding outlined in Reference 1. However, EGC is electing to not provide a position on the finding in writing, and acknowledges that in doing so, the right to appeal the final significance determination for the finding is being relinquished.
EGC understands the importance of the ERVs and recently elected to proactively perform an extent of condition review of the ERVs on DNPS, Unit 2. This occurred during a recent forced outage that began on February 6, 2015 (i.e., D2F56). As a result of the testing, and the stations comprehensive effort to eliminate the design vulnerability, EGC identified a failure of the DNPS, Unit 2 'C' ERV and upgraded the Unit 2 ERVs to the reliable "Hardened" design. At the present time, the DNPS, Unit 2 and Unit 3, ERV actuators have all been replaced with the reliable hardened design.
March 2, 2015 U. S. Nuclear Regulatory Commission Page 2 This letter contains no new regulatory commitments. Should you have any questions concerning this letter, please contact Mr. Bruce Franzen at (815) 416-2800.
Respectfully, Shane M. Marik Site Vice President - Dresden Nuclear Power Station Exelon Generation Company, LLC cc:
Regional Administrator-NRC Region III NRC Senior Resident Inspector - Dresden Nuclear Power Station NRC Project Manager, NRR - Dresden Nuclear Power Station