ML20236L262

Discusses Completion of Licensing Action for GL 97-04, Assurance of Sufficient Net Positive Suction Head for ECC & Containment Heat Removal Pumps, Issued on 971007.Subj GL Considered to Be Closed for Facilities

ML20236L262
Person / Time
Site:	Limerick
Issue date:	07/01/1998
From:	Buckley B NRC (Affiliation Not Assigned)
To:	Geoffrey Edwards PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
References
GL-97-04, GL-97-4, TAC-MA0004, TAC-MA0005, TAC-MA4, TAC-MA5, NUDOCS 9807100288
Download: ML20236L262 (5)

Text

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• • • • +j July 1, 1998 Mr. Garrett D. Edwards Director-Licensing, MC 62A-1 PECO Energy Company Nuclear Group Headquarters Correspondence Control Desk l

P.O. Box No.195 Wayne, PA 19087-0195

SUBJECT:

COMPLETION OF LICENSING ACTION FOR GENERIC LETTER 97-04,

" ASSURANCE OF SUFFICIENT NET POSITIVE SUCTION HEAD FOR EMERGENCY CORE COOLING AND CONTAINMENT HEAT REMOVAL i

PUMPS," DATED OCTOBER 7,1997; LIMERICK GENERATING STATION, UNITS 1 AND 2 (TAC NOS. MA0004 AND MA0005)

Deer Mr. Edwards:

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 Removat 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 reque.sted that the 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 ECCS suction strainers.

2.

Identify the required NPSH and the available NPSH.

0 3.

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

Specify whether containment overpressure (i.e., containment pressure above the vaporf 4.

pressure of the sump or suppression pool fluid) was credited in the calculation of available NPSH. Specify the amount of overpressure needed and the minimum overpressure available.

S.

When containment overpressure is credited in the calculation of available NPSH, confirm that an appropriate containment pressure analysis was done to establ;sh the minimum containment pressure, a

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G. Edwards In response to GL 97-04, you provided letters dated November 4, and December 30,1997, for Limerick Generating Station, Units 1 and 2. These submittals provided the information reque 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 tQclosed for your facilities.

We are, therefore, closing out TAC Nos. MA0004 and MA0005. We mank you for your promp and complete response.

if you have any questions r'egarding this matter, please contact Bartholomew Buckley at 301-415 1483.

Sincerely,

/S/

Bartholomew C. Buckley, Senior Project Manager Project Directorate 1-2 Division of Reactor Projects -l/II Office of Nuclear Reactor Regulation Docket Nos. 50-352/50-353 cc: See next page DISTRIBUTION:

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l In response to GL 97-04, you provided letters dated November 4, and December 30,1997, for l

' Limerick Generating Station, Units 1 and 2. These submittals provided the information requested l

by GL 97-04. The staff has reviewed your response and has concluded that all requested l

Information has been provided; therefore we consider GL 97-04 to be closed for your facilities.

l We are; therefore, closing out TAC Nos. MA0004 and MA0005. We thank you for your prompt and complete response.

L If you have any questions regarding this matter, please contact Bartholomew Buckley at 301-415-1483.

I Sincerely, v4d C, AC f

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l Bartholomew C. Buckley, Senior Project Manager l

Project Directorate 12 Division of Reactor Projects - 1/II Office of Nuclear Reactor Regulation' l

Docket Nos. 50-352/50-353 l-cc: See next page I

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1 1

G.' Edwards '

In response to GL 97-04, you provided letters dated hovember 4, and December 30,1997, for Limerick Generating Station, 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 I

infor 1ation has been provided; therefore we consider GL 97-04 tQclosed for your facilities.

We are, therefore, closing 'out TAC Nos. MA0004 and MA0005. We mank you for your prompt and complete response.

If you have any questions regarding this matter, pleas,e contact Bartholomew Buckley at 301-415-1483.

Sincerely,;

j

/S/

l l

BarthoIomew C. Buckley, Senior P.oject Manager Project Directorate I-2 I

Division of Reactor Projects - 1/11 l.

Office of Nuclear Reactor Regulation Docket Nos. 50-352/50-353 t.

. cc: See next page

DISTRIBUTION:

. Docket File JKudrick PUBLIC KKavanagh L

PDI-2 Reading File ACRS L

JZwolinski RCaruso RCapra i

BBuckley.

L MO'Brien.

CAnderson, RGN-l OGC n

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DOCUMENT NAME: LIMA 0004.LTR 1

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__2_-----___:--_.

Mr. Garrett D. Edwards Limerick Generating Station, Units 1 & 2 PECO Energy Company cc:

J. W. Durham, Sr., Esquire Chief-Division of Nuclear Safety Sr. V.P. & General Counsel PA Dept. of Environmental Resources PECO Energy Company P.O. Box 8469 2301 Market Street Harrisburg, PA 17105-8469 Philadelphia, PA 19101 Manager-Umerick Ucensing,62A-1 Director-Site Engineering PECO Energy Company Limerick Generating Station 965 Chesterbrook Boulevard P.O. Box A Wayne, PA 19087-5691 Sanatoga, PA 19464 Mr. James D. von Suskil, Vice President Limerick Genersting Station Manager-Experience Assessment Post Office Box A Limerick Generating Station Sanatoga, PA 19464 P.O. Box A Sanatoga, PA 19464 Plant Manager l

L!merick Generating Station Library l

P.O. Box A U.S. Nuclear Regulatory Commission i

Sanatoga, PA 19464 Region i 475 Allendale Road Regional Administrator, Region i King of Prussia, PA 19406 U.S. Nuclear Regulatory Commission 475 Allendale Road Senior Manager-Operations King of PnJssia, PA 19406 Limerick Generating Station P.O. Box A l

Senior Resident inspector Sanatoga, PA 19464 L

U.S. Nuclear Regulatory Commission Limerick Generating Station Dr. Judith Johnsrud P.O. Box 596 National Energy Committee Pottstown, PA 19464 Sierra Club i

433 Orlando Avenue Director-Site Suppo t Services State College, PA 16803 Limerick Generating Station P.O. Box A Sanatoga, PA 19464 Chairman Board of Supervisors of Limerick Township 646 West Ridge Pike Linfield, PA 19468

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