ML20214J508
| ML20214J508 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 11/21/1986 |
| From: | Kintner L Office of Nuclear Reactor Regulation |
| To: | Kingsley O MISSISSIPPI POWER & LIGHT CO. |
| Shared Package | |
| ML20214J512 | List: |
| References | |
| TAC-60652, NUDOCS 8612010334 | |
| Download: ML20214J508 (2) | |
Text
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November 21, 1986 DISTRIBUTION Docket File 14 M0'Brien NRC PDR" "~" " EJordan Local PDR BGrimes PD#4 Reading JPartlow WButler NThompson LKintner ACRS(10)
M0'Brien Docket No. 50-416 Mr. Oliver D..Kingsley, Jr.
Vice President, Nuclear Operations Mississippi Power & Light Company P.O. Box 23054 Jackson,' Mississippi 39205
Dear Mr. Kingsley:
SUBJECT:
FEEDWATER LINE B CONTAINMENT PENETRATION TEMPERATURE Re:
Grand Gulf Nuclear Station, Unit 1 By letters dated January 31 and May 12, 1986, the Mississippi Power & Light Company proposed equipment modifications and procedures to maintain water in the reactor core isolation cooling (RCIC) system above 65 F.
The RCIC system normally takes suction from the condensate storage tank and discharges into feedwater line B.
The flued head containment penetration of feedwater line B has a calculated permissible lowest service metal temperature (LSMT) of 65"F in order to comply with General Design Criterion 51, " Fracture Prevention of Containment Pressure Boundary", Appendix A to 10 CFR 50. Maintaining the RCIC system's water temperature above 65 F assures compliance with General Design Criterion 51.
The NRC staff has reviewed the licensee's submittals. The staff's safety evaluation is enclosed. The staff concludes that the licensee's commitments as described in their January 31, and May 12, 1986, submittals for preventing the feedwater line B flued head containment penetration from falling below its calculated permissible LSMT are acceptable.
Original 36 peed by Lester L. Kintner, Project Manager BWR Project Directorate No. 4 Division of BWR Licensing
Enclosure:
1 As stated cc: See next page 8612010334 861121 PDR ADOCK 05000416
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I Mr. Oliver D. Kingsley, Jr.
Mississippi Power & Light Company Grand Gulf Nuclear Station cc:
Robert B. McGehee, Esquire The Honorable William J. Guste, Jr.
Wise, Carter, Child, Steen and Caraway Attorney General P.O. Box 651 Department of Justice Jackson, Mississippi 39205 State of Louisiana Baton Rouge, Louisiana 70804 Nicholas S. Reynolds, Esquire Bishop, Liberman, Cook, Purcell Office of the Governor and Reynolds State of Mississippi 1200 17th Street, N.W.
Jackson, Mississippi 39201 Washington, D. C.
20036 Attorney General Mr. Ralph T. Lally Gartin Building Manager of Quality Assurance Jackson, Mississippi 39205 Middle South Services, Inc.
P.O. Box 61000 Mr. Jack McMillan, Director New Orleans, Louisiana 70161 Division of Solid Waste Management Mississippi Department of Natural Mr. Larry F. Dale, Director Resources Nuclear Licensing and Safety Bureau of Pollution Control Mississippi Power & Light Company Post Office Box 10385 P.O. Box 23054 Jackson, Mississippi 39209 Jackson, Mississippi 39205 1
Alton B. Cobb, M.D.
Mr. R. W. Jackson, Project Engineer State Health Officer Bechtel Power Corporation State Board of Health 15740 Shady Grove Road P.O. Box 1700 Gaithersburg, Maryland 20877-1454 Jackson, Mississippi 39205 Mr. Ross C. Butcher President Senior Resident Inspector Claiborne County Board of Supervisors U.S. Nuclear Regulatory Commission Port Gibson, Mississippi 39150 Route 2, Box 399 Port Gibson, Mississippi 39150 Mr. Ted H. Cloninger Vice President, Nuclear Engineering Regional Administrator, Region II and Support U.S. Nuclear Regulatory Commission.
Mississippi Power & Light Company 101 Marietta Street, N.W., Suite 2900 Post Office Box 23054 Atlanta, Georgia 30323 Jackson, Mississippi 39205 Mr. J. E. Cross Grand Gulf Nuclear Station Site Director Mississippi Power & Light Company P.O. Box 756 Port Gibson, Mississippi 39150 Mr. C. R. Hutchinson GGNS General Manager Mississippi Power & Light Company Post Office Box 756 Port Gibson, Mississippi 39150 a