ML20249A172

Discusses Completion of Licensing Action for GL 97-04, Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling & Containment Heat Removal Pumps,

ML20249A172
Person / Time
Site:	Vogtle
Issue date:	06/12/1998
From:	Jaffe D NRC (Affiliation Not Assigned)
To:	Mccoy C SOUTHERN NUCLEAR OPERATING CO.
References
GL-97-04, GL-97-4, TAC-MA0158, TAC-MA0159, TAC-MA158, TAC-MA159, NUDOCS 9806160137
Download: ML20249A172 (4)

Text

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UNITED STATES g

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June 12, 1998 9/9 A W Mr. C. K. McCoy J

Vice President Southem Nuclear Operating Company, Inc.

Post Office Sox 1295 Birmingham, Alabama 25201-1295

SUBJECT:

COMPLETION OF LICENSING ACTION FOR GENERIC LETTER 97 VOGTLE ELECTRIC GENERATING PLANT, UNITS 1 AND 2 (TAC NOS. MA0158 AND MA0159)

Dear Mr. McCoy:

The U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 97-04, " Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps," to all holders of operating licenses or construction permits on October 7, 1997. The NRC issued GL 97-04 to confirm the adequacy of the net positive suction head (NPSH) available for emergency core cooling (including core spray and decay heat removal) and containment heat removal pumps under all design-basis accident scenarios.

In GL 97-04, the NRC staff specifically requested that licensees provide the information outlined below for each of their facilities.

1. Specify the general methodology used to calculate the head loss associated with the Emeigency Core Cooling System suction strainers.

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2. Identify the required NPSH and the available NPSH.

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3. Specify whether the current design-basis NPSH analysis dif%rs from the most recent analysis reviewed and approved by the NRC for which a safety evaluation was issued.

4. Specify whether containment overpressure (i.e., containment pressure above the vapor pressure of the sump or suppression pool fluid) was credited in the calculation of available NPSH. Specify the amount of merpressure needed and the minimum overpressure available.

5. When containment overpressure is credited in the calculation of available NPSH, confirm that an appropriate containment pressure analysis was done to establish the minimum containment pressure.

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C. K. McCoy June 12,1998 In response to GL 97-04, you provided letters dated October 30 and December 26,1997, for Vogtle Electric Generating Plant, Units 1 and 2. These submittals provided the information requested by GL 97-04. The staff has reviewed your response and has concluded that all requested information has been provided; therefore, we consider GL 97-04 closed for your facility. We appreciate your prompt and complete response.

If you have'any questions regarding this matter, please contact David H. Jaffe at 301-415-1439.

I J Sincerely, i

'0RIGINAL SIGNED BY-David H. Jaffe, Senior Project Managar Project Directorate ll-2 :

Division of Reactor Projects -1/li l

Office of Nuclear Reactor Regulation Docket Nos. 50-424 and 50425 i

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i DOCUMENT NAME: G:\\VOGTLE\\9704.LTR LTo receive a copy of this document, indicate in the box: "C" =. Copy without enclosures "E" = Copy with enclosures "N" = No copy ' 'See previous concurrence OFFICE. PM:PDll-2*

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NAME DJaffe:cn LBerry RCaruso JKudrick HBe W DATE 6/11/98 '

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l C. K. McCoy '

In response to GL 97-04, you provided letters dated October 30 and December 26,1997, for Vogtle Electric Generating Plant, Units 1 and 2. These submittals provided the information requested by GL 97-04. The staff has reviewed your response and has concluded that al!

requested information has been provided; therefore, we consider GL 97-04 closed for your facility. We appreciate your prompt and complete response.

If you have any questions regarding this matter, please contact David H. Jaffe at 301-415-1439.

Sincerely, t

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D vid

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Project Manager Project Directorate 11-2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-424 and 50-425 cc:- See next page

Vogtle Electric Generating Plant-l cc:

Harold Rebels, Director Mr. J. A. Bailey Department of Natural Resources

' Manager, Licensing 205 Butler Street, SE. Suite 1252 Southem Nuclear Operat.ng Atlanta, Georgia 30334 Company, Inc.

P. O. Box 1295 Attorney General l

Birmingham, Alabama 35201-1295 Law Department i

1 132 Judicial Building Mr. J. B. Beasley-Atlanta, Georgia 30334 General Manager, Vogtle Electric Generating Plant Mr. R. D. Barker Southem Nuclear Operating Program Manager Company, Inc.

Fossil & Nuclear Operations P. O. Box 1600 Oglethorpe Power Corporation Waynesboro, Georgia 30830 2100 East Exchange Place P. O. Box 1349 Regional Administrator, Region 11 Tucker, Georgia 30085-1349 U. S. Nuclear Regulatory Commission Charice A. Patrizia, Esquire Atlanta Federal Center Paul, Hastings, Janofsky & Walker 61 Forsyth Street, SW., Suite 23T85 10th Floor Atlanta, Georgia 30303 1299 Pennsylvania Aver.ue Washington, DC 20004-9500 Office of Planning and Budget Room 615B Arthur H. Domby, Esquire 270 Washington Street, SW.

Troutman Sanders Atlanta, Georgia 30334 NationsBank Plaza 600 Peachtree Street, NE.

Mr. J. D. Woodard Suite 5200 Executive Vice President -

Atlanta, Georgia 30308-2216 Southem Nuclear Operating Company, hc.

Resident inspectcr P. O. Box 1295 Vogtle Plant Birmingham, Alabama 35201-1295 8805 River Road Waynesbcro, Georgia 30830 Steven M. Jackson Senior Engineer-Power Supply Office of the County Commissioner Municipal Electric Authonty Burke County Commission of Georgia Waynesboro, Georgia 30830 1470 Riveredge Parkway, NW.

Atlanta,' Georgia 30328-4684 Mr. C. K. McCoy Vice President Southem Nuclear Operating Company, Inc.

P. O. Box 1295 Birminghart, Alabama 35201 l