ML20138F430

Forwards SER Re Allowable Control Room Inleakage to Meet Control Room Habitability Requirements.Reduction in Allowable Inleakage Rate Recommended During Simultaneous Operation of Units 1 & 2

ML20138F430
Person / Time
Site:	Grand Gulf
Issue date:	10/16/1985
From:	Novak T Office of Nuclear Reactor Regulation
To:	Richard J MISSISSIPPI POWER & LIGHT CO.
Shared Package
ML20138F434	List: ML20138F430 ML20138F486
References
TAC-56445, NUDOCS 8510250264
Download: ML20138F430 (2)

Text

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October 16, 1985 DISTRIBUTION:

iDocket Nos.J50141.64417 s NRC PDR local PDR Docket Nos: 50-416 PRC System and 50-417 LB #4 r/f EAdensam LKintner i Mr. Jackson B. Richard MDuncan

! Senior Vice President, Nuclear JRead Mississippi Power and light Company VPanciera P.O. Box 23054 Attorney, OELD Jackson, Mississippi 39205 JPartlow BGrimes t

Dear Mr. Richard:

EJordan ACRS (16)

Subject:

Grand Gulf Nuclear Station Units I and 2 -

Control Room Habitability i The NRC staff's Safety Evaluation Report, Supplement No. 6, Section 6.4 provided our evaluation of allowable control room inleakage to meet control room habit-ability requirements of General Design Criterion 19, Appendix A to 10 CFR 50 for operation of Unit I with Unit 2 under construction. The control room is shared between Units 1 and 2. The staff has completed its review of allowable control room inleakage for simultaneous operation of Units 1 and 2. The staff's evalua-tion is enclosed.

Based on its review, the staff concludes that for simultaneous operation of Units 1 and 2, the allowable inleakage rate should be reduced to 590 cfm from the 760 cfm presently allowed by Unit 1 License Condition 2.C.(38). The Unit 2 i operating license will be appropriately conditioned to reflect this conclusion.

Sincerely, Original signed bys

! Thomas M. Novak Thomas M. Novak, Assistant Director for licensing Division of Licensing

Enclosure:

i As stated I

cc: See next page 1

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' 8510250264 851016 PDR ADOCK 05000416 F PDR

Mr. Jackson B. Richard Mississippi Power & I.ight Crmpany Grand Gulf Nuclear Staiton cc:

Robert B. McGehee, Esquire The Ponorable William J. Guste, Jr.

Wise, Carter, Child, Steen and Caraway Attorney General P.O. Box 651 Department of Justice Jackson, Mississippi 39205 State of 1.ouisiana Baton Rouge,I.ouisiana 70804 Nicholas S. Reynolds, Esquire Bishop,l.iberman, Cook, Purcell Mr. Oliver D. Kingsley, Jr.

and Reynolds Vice President, Nuclear Operations 1200 17th Street, N.W. Mississippi Power & l.ight Company Washington, D. C. 20036 P.O. Box 23054 Jackson, Mississippi 39205 Mr. Ralph T. Lally Manager of Quality Assurance Office of the Governor Middle South Services, Inc. State of Mississippi P.O. Box 61000 Jackson, Mississippi 39201 New Orleans, l.ouisiana 70161 Attorney General Mr. Larry F. Dale, Director Gartin Building Nuclear licensing and Safety Jackson, Mississippi 39205 Mississippi Power & l.ight Company P.O. Box 23054 Mr. Jack McMillan, Director Jackson, Mississippi 39205 Solid Waste Mississippi State Board of Pealth Mr. R. W. Jackson, Project Engineer 880 Lakeland Bechtel Power Corporation Jackson, Mississippi 39206 15740 Shady Grove Road Gaithersburg, Maryland 20760 Alton B. Cobb, M.D.

State Pealth Officer Mr. Ross C. Butcher State Board of Pealth Senior Resident Inspector P.O. Box 1700 U.S. Nuclear Regulatory Commission Jackson, Mississippi 39205 Route 2, Box 399 Port Gibson, Mississippi 39150 President Claiborne County Board of Supervisors Regional Administrator, Region II Port Gibson, Mississippi 39150 U.S. Nuclear Regulatory Commission, 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 Mr. J. E. Cross, General Manager Grand Gulf Nuclear Station Mississippi Power & l.ight Company P.O. Box 756 Port Gibson, Mississippi 39150

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