ML20214L019

Forwards Request for Addl Info on Section 3.2.4 of Facility Restart Rept Re Steam Generator Overfill & Flooding of Main Steam Headers to Complete Review

ML20214L019
Person / Time
Site:	Rancho Seco
Issue date:	05/13/1987
From:	Knighton G Office of Nuclear Reactor Regulation
To:	Andognini J SACRAMENTO MUNICIPAL UTILITY DISTRICT
References
TAC-61635, NUDOCS 8705290148
Download: ML20214L019 (3)

Text

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g-MAY 131987 Docket flo.: 50-312 Mr. J. Carl Andognini Chief Executive Officer, Nuclear Sacramento Municipal Utility District 6201 S. Street Post Office Box 15830 Sacramento, California 95852-1830

SUBJECT:

RANCHO SEC0 RESTART REPORT - REQUEST FOR ADDITIONAL INFORMATION (TAC N0. 61635)

By letter dated December 15, 1906, SMUD submitted the Restart Report for the Rancho Seco Nuclear Generating Station. We have reviewed Section 3.2.4 (Steam Generator Overfill and Flooding of the Main Steam Headers) of the Restart Report and find that we need additional information to complete our review. Please respond to the enclosed request for additional information.

The reporting and/or recordkeeping requirements contained in this letter ,

affect fewer than ten respondents; therefore OMB clearance is rot required l under P.L.96-511. l Sincerely, l

/s / .

1 George W. Knighton, Director Project Directorate V Divison of Reactor Projects - III/IV/V and Special Projects

Enclosure:

As stated DISTRIBUTION ~

• -Docket File 50-312 - T. Marsh NRC PDR/L FDR M. Hartzman D. Crutchfield G. Kalman G. Holahan J. Lee /R. Weller OGC-Bethesda

. artlow {)g52 DON 50 2 hp3 Raw DRSP/PDV DRSR/j RWeller:cd GWKdibnton 5// 3 /87 5/g3 /87 0FFICIA;. RECORD COPY

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O Mr. G. Carl Andognini Rancho Seco Nuclear Generating Chief Executive Officer Nuclear Station Sacramento Municipal Utility District 4

cc:

Mr. David S. Kaplan, Secretary Mr. John Bartus and General Counsel Ms. JoAnne Scott Sacramento Municipal Utility Federal Energy Regulatory Comission District 825 North Capitol Street, N. E.

6201 S Street Washington, D.C. 20426 P. O. Box 15830 Sacramento, California 95813 Thomas A. Baxter, Esq.

Shaw, Pittman, Potts & Trowbridge 2300 N Street, N.W.

Washington, D.C. 20037 Mr. John V. Vinguist Acting Manager, Nuclear Licensing Sacramento Municipal Utility District Rancho Seco Nuclear Generating Station 14440 Twin Cities Road Herald, California 95638-9799 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Suite 220, 7910 Woodmont Avenue Bethesda, Maryland 20814 l

Resident Inspector / Rancho Seco '

c/o U. S. N. R. C.

14440 Twin Cities Road Herald, California 95638 Regional Administrator, Region V U.S. Nuclear Regulatory Comission  :

1450 Maria Lane, Suite 210 Walnut Creek, California 94596 l Mr. Jo;rr..'i 9. Ward, Chief r<adiolo .% , Health Branch State Pe3a tment of Health Services 714 P Street, Office Building #8 Sacramento, California 95814 Sacramento County Board of Supervisors 827 7th Street, Room 424 Sacramentc. California 95814 Ms. Helen Hubbard P. O. Box 63 Sunol, California 94586

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REQUEST FOR ADDITIONAL INFORMATION OTSG OVERFILL AND FLOODING OF THE MAIN STEAM LINES RANCHO SECO NUCLEAR GENERATING STATION MECHANICAL ENGINEERING BRANCH DIVISION OF ENGINEERING AND SYSTEM TECHNOLOGY

1. Provide an evaluation and verification that the design limits for the supports of the steam generator, the "A" main steam line and the "A" main steam bypass line have not been exceeded due to overflow and the injection of the 13000 gallons of water.

2. Provide the results of the detailed examination of the welds and piping of the bypass line currently being performed.

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