ML20196H293

Discusses NRC Reviews Re Providing Results of Analysis.Nrc Review Concludes That Plant Instruments Lines Meet Nine Criteria in Ansi/Ans Std 56.2 - 1984 for Closed Sys Outside Containment & Acceptable

ML20196H293
Person / Time
Site:	Grand Gulf
Issue date:	03/07/1988
From:	Kintner L Office of Nuclear Reactor Regulation
To:	Kingsley O SYSTEM ENERGY RESOURCES, INC.
References
TAC-65707, NUDOCS 8803100153
Download: ML20196H293 (2)

Text

MAR

'ddeketNo.50416 ~ ' 'l 198@lSTRIBUTK ACRS(10) bORs ANotafrancesco Mr. Oliver D. Kingsley, Jr. PD21 R/F Vice President, Nuclear Operations SVarga System Energy Resources, Inc. Glainas P.O. Box 23054 Edordan Jackson, MS 39205 JPartlow LKintner

Dear Mr. Kingsley:

PAnderson

SUBJECT:

GRAND GULF NUCLEAR STATION (GGNS), UNIT 1 - CONTAINMENT ISOLATION FOR INSTRUMENT LINES (TAC 65707)

By letter dated February 12, 1988, System Energy Resources Inc. (the licensee) provided the results of an analysis to confirm that the closed systems formed by the instrument lines identified in its July 2, 1987 letter satisfy the nine criteria specified in Subsection 3.6.7 of ANSI /ANS Standard 56.2 - 1984 and that additional manual valves are not needed. By its September 4, 1987 safety evaluation, the NRC staff concluded that the closed systems in these lines would maintain containment leak tight integrity without additional motor-operated containment isolation valves, provided these nine criteria are satisfied. The staff also concluded that the addition of manual valves, as appropriate, to provide for improved maintenance of pressure transmitters in the instrument lines was acceptable.

The NRC staff has reviewed the licensee's February 12, 1988 letter. The staff concludes that the above identified GGNS, Unit 1 instrument lines meet the nine criteria specified in ANSI /ANS Standard 56.2 - 1984 for closed systems outside containment and are, therefore, an acceptable alternate basis for meeting the requirements of General Design Criterion 55. The staff further concludes that the present instrument lines, without additional manual valves, provide an acceptable means to achieve a temporary closed system boundary if a pressure transmitter must be removed for maintenance during plant operation.

The licensee's February 12, 1988 letter also indicated that all analyses, modifications to instrument lines, and changes to plant operating procedures identified in its July 2, 1987 and February 12, 1988 letters have been completed. By telephone, the licensee stated that the implementation completion date was January 15, 1988.

Sincerely, ni egpi g g gB M 16 Lester L. Kintner, Project Manager p PDR Project Directorate 11-1 Division of Reactor Projects - I/II cc: See next page Q

LA:Ed OI PM.'PD21:DRPR  : DEST D: 1:DRPR pan.de rs6Y)E LKintner AJCraig EAdensam 3/J/88 3/G/88 3/ /88 3/q/88 i

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• W. Oliver D. Kingsley, Jr.

System Energy Resources, Inc. Grand Gulf Nuclear Station (GGNS) cc:

Mr. Ted H. Cloninger Mr. C. R. Hutchinson Vice President, Nuclear Engineering GGNS General Manager and Support System Energy Resources, Inc.

System Energy Resources, Inc. Post Office Box 756 Post Office Box 23054 Port Gibson, Mississippi 39150 Jackson, Mississippi 39205 4 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 Utilities System Services, Inc.

P.O. Box 61000 Mr. Jack McMillan, Director New Orleans, Louisiana 70161 Division of Solid Waste Management Mississippi Department of Natural Mr. John G. Cesare Resources Director, Nuclear Licensing System Energy Resources, Inc. Post Office Box 10385 P.O. Box 23054 Jackson, Mississippi 39209 Jackson, Mississippi 39205 Alton B. Cobb, M.D.

Mr. R. W. Jackson, Project Engineer State Health Officer Bechtel Power Corporation State Board of Health 15740 Shady Grove Rcad P.O. Box 1700 Gaithersburg, Maryltnd 20877-1454 Jackson, Mississippi 39205 Mr. Ross C. Butcher President Senior Resident Inspector Claiborne County Board of Supervisors U.S. Nuclear Regulatory Comission Port Gibson, Mississippi 39150 Route 2 Box 399 Port Gibson, Mississippi 39150 Regional Administrator, Region II U.S. Nuclear Regulatory Comission 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 Mr. James E. Cross GGNS Site Director System Energy Resources, Inc.

P.O. Box 756 Port Gibson, Mississippi 39150