ML093480144
| ML093480144 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Watts Bar, Sequoyah  |
| Issue date: | 12/10/2009 |
| From: | Krich R Tennessee Valley Authority |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML093480144 (2) | |
Text
Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402-2801 December 10, 2009 10 CFR 50.4 10 CFR 50 Appendix E U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296 Sequoyah Nuclear Plant Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328 Watts Bar Nuclear Plant Facility Operating License No. NPF-90 NRC Docket No. 50-390
Subject:
Emergency Response Data System Upgrade As recognized by the NRC in a Federal Register Notice that was issued on July 20, 2009 (74FRN35208), TVA has been participating in a voluntary program with NRC to test the use of virtual private network (VPN) technology in transmitting plant information to the ERDS server.
Title 10 Code of Federal Regulations, Part 50, Appendix E,Section VI.3.b, requires that licensees notify the NRC at least 30 days prior to any hardware or software changes that could affect the transmission format and communication protocol to the Emergency Response Data System (ERDS). The purpose of this letter is to notify the NRC that TVA began to work with NRC to convert to VPM technology in June 2008 by participating in and completing the initial ERDS Phase II prototype testing.. Since receiving the final configured VPN device from the NRC in September 2009 and subsequently installing the device, TVA intends to replace the existing modems with VPN devices for the ERDS as soon after November 30, 2009, as both parties can support the required installation testing.
Prnted on recycled paper
U.S. Nuclear Regulatory Commission Page 2 December 10, 2009 There are no regulatory commitments in this letter.
If you have any questions concerning this information, please telephone Fred Mashburn at (423) 751-8817.
Respectfully, Vice President Nuclear Licensing cc:
NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Senior Resident Inspector - Sequoyah Nuclear Plant NRC Senior Resident Inspector - Watts Bar Nuclear Plant