ML13081A004

Transmittal of Revised Unit 1/Unit 2 As-Designed Fire Protection Report

ML13081A004
Person / Time
Site:	Watts Bar
Issue date:	03/13/2013
From:	O'Dell J Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC ME3091
Download: ML13081A004 (3)

Text

Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 March 13, 2013 10 CFR 50.4 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 2 NRC Docket No. 50-391

Subject:

WATTS BAR NUCLEAR PLANT (WBN) UNIT 2 - TRANSMITTAL OF REVISED UNIT 1/UNIT 2 AS-DESIGNED FIRE PROTECTION REPORT (TAC NO. ME3091)

References:

1. TVA letter to NRC dated February 28, 2013, "Watts Bar Nuclear Plant (WBN) Unit 2 - Fire Protection Report - Response to Request for Additional Information (RAI) (TAC No. ME3091)"

2. Email from Justin Poole (NRC) to Gordon Arent (TVA), dated February 8, 2013

3. TVA letter to NRC dated December 20, 2012, "Watts Bar Nuclear Plant (WBN) Unit 2 - Update of Commitments Associated with the Fire Protection Report (TAC No. ME3091)"

This letter fulfills a commitment made in Reference 1 to submit an updated version of the Unit 1/Unit 2 As-Designed Fire Protection Report (FPR) by March 15, 2013. Specifically, this update incorporates the changes outlined in TVA's response (Reference 1) to NRC's February 8, 2013, Request for Additional Information (RAI) (Reference 2). Provided In is a listing of the sections of the FPR that were updated to address the February 8, 2013, RAI. Enclosure 2 contains a complete updated version of the Unit 1/Unit 2 As-Designed FPR. For this version of the FPR, all revision bars associated with previous updates were removed so that the revision bars in this version highlight only the changes made since the FPR version submitted via Reference 3. A red-lined version of the updated FPR was mailed on a Compact Disc (CD) to Mr. Justin Poole, NRR Senior Project Manager, on March 13, 2013.

As part of the recent discussions with NRC regarding the Unit 1/Unit 2 FPR, NRC requested a list of fire protection submittals made from the restart of the Unit 2 construction project to present day. This information is provided in Enclosure 3.

A-t

U.S. Nuclear Regulatory Commission Page 2 March 13, 2013 The information provided in Enclosure 4 and in Enclosure 5 addresses the following two issues that were not specifically an element of NRC's February 8, 2013 RAI:

1. Enclosure 4 - Addresses the basis for updating the analysis for Fire Area 64, "Yard." This enclosure also addresses the reason for moving existing Part VI Section 3.85, "Duct Bank A," to Part VI Section 3.70.2.2 and the reason for moving Part VI Section 3.86, "Duct Bank B," to Part VI Section 3.70.2.3.

2. Enclosure 5 - Addresses a discrepancy in Supplemental Safety Evaluation Report (SSER) 18 regarding the CO2 concentration for the Diesel Generator Engine Rooms.

This letter contains no new commitments. If you should have any questions, please contact Gordon Arent at (423) 365-2004.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 1 3th day of March, 2013.

{4. cD IcLO imes H. O'Dell ompliance Manager Iatts Bar Unit 2

Enclosures:

Listing of the Sections of the Fire Protection Report (FPR) that were Updated to Address NRC's February 8, 2013, Response to Request for Additional Information Updated Version of the Unit 1/Unit 2 As-Designed Fire Protection Report (FPR)

List of Fire Protection Submittals Made from the Restart of the Unit 2 Construction Project to Present Day Update of the Analysis for Fire Area 64, "Yard" Discrepancy in Supplemental Safety Evaluation Report (SSER) 18 Regarding the CO 2 Concentration for the Diesel Generator Engine Rooms

U.S. Nuclear Regulatory Commission Page 3 March 13, 2013 cc (Enclosures):

U. S. Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257 NRC Resident Inspector Unit 2 Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381