ML20215M532

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Forwards Request for Addl Info Re CEN-259, Evaluation of Natural Circulation Cooldown Test Performed at San Onofre Nuclear Generating Station. Rept Submitted by Re Conformance W/Design Requirements of Position Rsb 5-1
ML20215M532
Person / Time
Site: Waterford Entergy icon.png
Issue date: 05/11/1987
From: Joshua Wilson
Office of Nuclear Reactor Regulation
To: Dewease J
LOUISIANA POWER & LIGHT CO.
References
TAC-61525, NUDOCS 8705140003
Download: ML20215M532 (3)


Text

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! May 11, 1987 Docket No. 50-382 Mr. J. G. Dewease-Senior Vice President -

Nuclear Operations

Louisiana Power and Light Company 317 Baronne St. , Mail Unit 17-1 New Orleans, Lousiana 70160 c

Dear Mr. Dewease:

SUBJECT:

NATURAL CIRCULATION, BORON MIXING AND C00LDOWN TEST (TAC 61525)

By letter dated February 29, 1984, Lousiana Power and Light Company submittal 1 CEN-259, "An Evaluation of the Natural Circulation Cooldown Test Performed at

. the San Onofre Nuclear Generating Station," to demonstrate conformance with-

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the design requirements of Branch Technical Position RSB 5-1. The NRC staff and its contractors from Brookhaven National Laboratory have been reviewing

the report and have concluded that additional information is needed in order j for the staff to complete its review.

1 j .

You are requested to provide the information requested in Enclosure 1 by COB l on May 29, 1987. If you have any questions about this request, please con-

tact me at (301) 492-9403.

Sincerely, I

Ja/s/' mes H. Wilson, Project Manager

. ProjectDirectorate-IV DivisionofReactorProjects-III, IV, V_and Special Projects

Enclosure:

2 As stated I cc w/ enclosure:

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.May 11, 1987

- i 3 l Mr. Jerrold G. Dewease Waterford 3 Louisiana Power & Light Company l CC: .

W. Malcolm Stevenson, Esq. Regional Administrator, Region IV j Monroe & Leman U.S. Nuclear Regulatory Commission-1432 Whitney Building Office of Executive Director for New Orleans, Louisiana 70103 . Operations  ;

611 Ryan Plaza Drive, Suite 1000 I i

Mr. E. Blake Arlington, Texas ~76011  ;

Shaw, Pittman, Potts & Trowbridge 2300 N Street, NW Carole H. Burnstein, Esq.

Washington, D.C. 20037 445 Walnut Street:

New Orleans, Louisiana 70118 Mr. Gary L. Groesch 3

Post Office Box 791169 Mr. Charles B. Brinkman,-Manager  ;

New Orleans, Louisiana 70179-1169 Washington Nuclear Operations ,

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Combustion Engineering Inc.

Mr. F. J. Drummond 7910 Woodmont Avenue Suite 1310 I

ProjectManager-Nuclear Bethesda, Maryland 10814 Louisiana Power & Light Company 317 Baronne Street Mr. William H. Spell Administrator i

New Orleans, Louisiana 70160 NuclearEnergyDivisIon (

1 Office of Environmental Affairs .

i Mr. K. W. Cook Post Office Box 14690

! Nuclear Su> port and Licensing Manager Baton Rouge, Louisiana 70898 i Louisiana >ower & Light Company President,PolicyJury 4 317 Baronne Street i New Orleans, Louisiana 70160 St.' Charles Parris 4 Mahnville, Louisiana 70057 l Resident Inspector /Waterford NPS 1

Post Office Box 822 Killona, Louisiana 70066

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I. Mr. Ralph T. Lally i Manager of Quality Assurance Middle South Servies, Inc.

t Post Office Box 61000 j New Orleans, Louisiana 70161  ;

Chairman 4: Louisiana Public Service Commission

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1- ;BatonRouge,LouisIanate1630> 70825-1697 .

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. May 11 ,1987 -

ENCLOSbRE REQUEST FOR ADDITIONAL INFORMATION FOR WATERFORf, UNIT 3 The following information is needed to evaluate Louisianna Power ano Light's submittal entitled, "An Evaluation of the Natural Circulation Cooldown Test Performed at the San Onofre Nuclear Generating Station," CEN-259.

, 1. Technical Specification 3.7.1.3 requires that the condensate storage pool contain a volume of at least 170,.300 gallons during operations in Modes 1, 2 and 3. What percent of this water is available for cooldown under natural circulation conditions?

2. Is there any other safety grade cooling water (i.e., in addition to the 170,000 gallons) available for cooldown of Unit 3 under natural circulation conditions? If there is an additional source, then provide an est' mate of the additional amount available.
3. Describe how the reactor coolant pump (RCP) seals are cooled during natural circulation cooldown. Provide an estimate of the controlled leakoff rate during natural circulation.

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