ML102240382

NRC August 3-4, 2010 Instrumentation and Controls Meeting - Request for Additional Information

ML102240382
Person / Time
Site:	Watts Bar
Issue date:	08/11/2010
From:	Bajestani M Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
WB-DC-30-29, Rev 8
Download: ML102240382 (2)

Text

Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 August 11, 2010 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop: OWFN P1-35 Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 2 10 CFR 50.4 NRC Docket No. 50-391

Subject:

WATTS BAR NUCLEAR PLANT (WBN) UNIT 2 - NRC AUGUST 3-4, 2010, INSTRUMENTATION AND CONTROLS MEETING - REQUEST FOR ADDITIONAL INFORMATION The purpose of this letter is to provide the documents that NRC Staff requested during the meeting held at TVA's facilities located in Knoxville, Tennessee, on August 4, 2010.

Specifically, NRC requested TVA to provide the following documents:

Item 1: Watts Bar Nuclear Plant Unit 1/Unit 2, Design Criteria Document No. WB-DC-30-29, Revision 8, titled "Plant Integrated Computer System (ICS)," dated August 10, 2009 Item 2: Nuclear Power Group Calculation titled "Segmentation Analysis for WBN Unit 2 DCS (Distributed Control System)," dated August 2, 2010, Revision 0 Enclosures 1 and 2 contain these two documents. This letter does not contain any new commitments. Executed on the 1 1 th day of August, 2010.

If you have any questions, please contact William Crouch at (423) 365-2004.

Sincerely, Masoud Ba'sani Watts Bar t 2 Vice President

U.S. Nuclear Regulatory Commission Page 2 August 11, 2010

Enclosures:

Item 1: Watts Bar Nuclear Plant Unit 1/Unit 2, Design Criteria Document No. WB-DC-30-29, Revision 8, titled "Plant Integrated Computer System (ICS)," dated August 10, 2009 Item 2: Nuclear Power Group Calculation titled "Segmentation Analysis for WBN Unit 2 DCS (Distributed Control System)," dated August 2, 2010, Revision 0 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