ML20137A125

Forwards RAI Re 961017 Request for Deviation from Commitment to Meet Technical Requirements of Section III.G.2 of App R to 10CFR50

ML20137A125
Person / Time
Site:	Summer
Issue date:	03/17/1997
From:	Andrea Johnson NRC (Affiliation Not Assigned)
To:	Gabe Taylor SOUTH CAROLINA ELECTRIC & GAS CO.
References
TAC-M97337, NUDOCS 9703200194
Download: ML20137A125 (3)

Text

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Mr. Gary J. Taylor March 17, 1997'. ' '

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Vice President, Nuclear Operations 7 i South Carolina Electric & Gas Company i Virgil C. Summer Nuclear Station .

Post Office Box 88 '

Jenkinsville, South Carolina 29065 ,

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION - DEVIATION FROM 10 CFR PART 50, APPENDIX R, SECTION III.G, FIRE PROTECTION OF SAFE SHUTDOWN '

CAPABILITY FOR VIRGIL C. SUMMER NUCLEAR STATION (TAC NO. M97337)

Dear Mr. Taylor:

By letter dated October 17, 1996, you requested a deviation from your

, commitment to meet the technical requirements of Section III.G.2 of Appendix R to Title 10 of the Code of Federal Reaulations, Part 50, to the extent that it specifies the separation of certain redundant safe shutdown circuits with fire-rated barriers. Alternatively, you propose to use fire-rated cables to replace portions of certain safe shutdown circuits at V.C. Summer Nuclear Station.

In order to complete our review and evaluation of this deviation request, we require additional information from you. Enclosed is our request for additional information. We are requesting a response within 45 days of the date of this letter.

j Sincerely, (Original Signed By)

Allen R. Johnson, Project Manager Project Directorate II-I Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket No. 50-395

Enclosure:

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ENCLOSURE

REQUEST FOR INFORMATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION REQUEST FOR DEVIATION FROM SECTION III.G.2 0F APPENDIX R TO 10 CFR PART 50 VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO. 50-395

1. Submit the Underwriters Laboratories Report on Fire Resistant Cables, File R10925-1, dated April 10, 1984.

2. Provide a comparison of the cables propos ' for installation in the plant and the cables tested in the UL fi test.

3. Describe conductor number, type, and size of Firezone R cables to be installed. Identify the loads to be powered by the cables and provide

, the nominal voltage and current requireraents for each of these loads.

Describe how the UL fire test results are bounding for the intended l application of the Firezone R cables. i

4. Provide detailed drawings of the fire areas through which the fire-rated cables are routed. Clearly mark the route of the cables, and clearly

label all equipment and components that are in the fire areas. Verify that there will be no splices in the plant-installed Firezone R cables.

5. Describe how the fire-rated cables are routed to include types of raceways and how the cables and raceways are supported.

6. Verify that the cable and raceway supports will not fail if exposed to a fire.

7. Verify that the failure under fire exposure cf a structure, system, or component in the vicinity of the cables will not damage the fire-resistant cables.

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Mr. Gary J. Taylor VIRGIL C. SUMMER NUCLEAR STATION South Carolina Electric & Gas Company cc:

Mr. R. J. White Nuclear Coordinator S.C. Public Service Authority .

c/o Virgil C. Summer Nuclear Station Post Office Box 88, Mail Code 802 Jenkinsville, South Carolina 29065 J. B. Knotts, Jr., Esquire Winston & Strawn Law Firm 1400 L Street, N.W.

Washington, D.C. 20005-3502 Resident Inspector / Summer NPS c/o U.S. Nuclear Regulatory Commission Route 1, Box 64 Jenkinsville, South Carolina 29065 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta St., NW., Ste. 2900 Atlanta, Georgia 30323 Chairman, Fairfield County Council '

Drawer 60 Winnsboro, South Carolina 29180 Mr. Virgil R. Autry Director of Radioactive Waste Management Bureau of Solid & Hazardous Waste Management Department of Health & Environmental Control 2600 Bull Street Columbia, South Carolina 29201 Mr. Robert M. Fowlkes, Manager Operations South Carolina Electric & Gas Company Virgil C. Summ.er Nuclear Station, Mail Code 303 Post Office Box 88 Jenkinsville, South Carolina 29065 Ms. April R. Rice, Manager Nuclear Licensing & Operating Experience South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station, Mail Code 830 Post Office Box 88 Jenkinsville, South Carolina 29065