ML20148M867

Forwards RAI Re 970407 Request to Revise TS & Bases to Permit Replacement of 125Vdc Gould Batteries W/New C&D Charter Power Sys,Inc,Batteries

ML20148M867
Person / Time
Site:	Byron
Issue date:	06/20/1997
From:	Dick G NRC (Affiliation Not Assigned)
To:	Johnson I COMMONWEALTH EDISON CO.
References
TAC-M98621, TAC-M98622, NUDOCS 9706250268
Download: ML20148M867 (3)

Text

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June 20, 1997 Ms. Irene M. Johnson, Acting Manager Nuclear Regulatory Services Commonwealth Edison Company Executive Towers West 111 1400 Opus Place, Suite 500 Downers Grove, IL 60515

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING THE PROPOSED REPLACEMENT OF GOULD BATTERIES WITH C&D CHARTER POWER SYSTEMS BATTERIES - BYRON STATION, UNITS 1 AND 2 (TAC NOS.

M98621 AND M98622)

Dear Ms. Johnson:

On April 7,1997, Commonwealth Edison Company (Comed) submitted a request to revise the technical specifications and the bases to permit replacement of the 125Vdc Gould bdteries with new C&D Charter Power Systems, Inc. batteries. During the course of our revieve, we have identified the need for further information as discussed in the enclosed request fer additional information (RAI). Please advise us as to when we may expect a response to the RAI so that we may schedule the completion of our review of your submittal.

Sincerely, Original signed by:

George F. Dick, Jr., Project Manager Project Directorate ill-2 Division of Reactor Projects - Ill/IV Office of Nuclear Reactor Regulation Docket Nos. STN 50-454 and STN 50-455

Enclosure:

RAI cc w/ enclosure: See next page O!

Distribution:

Docket File PUBLIC PDill-2 r/f J. Roe, JWR l

R. Capra C. Moore G. Dick E. Adensam, EGA1 1 S.Saba ACRS, T2E26 S. Bailey OGC, 015B18 R. Lanksbury, Rill 250037 NRC HLE CENTEB COPY DOCUMENT NAME: BYRON \BY98621.RAI To receive a copy of this document, indicatO(n the px: "C" = Copy without enclosures "E" = Copy with enclosures "N" = No copy 0FFICE PM:PDIll-/2 /l /= L 4:PRIJl-2 l v EELB n40 D:PDIll-2 l6 i'

NAME G. Dick # ink C dfoore\ J. Calvo' R. Capra d4 DATE 06/,20/97 06/40/97 06/2e/97 a 064p>/97 m AL RECORD' COPY 9706250268 970620 PDR ADOCK 05000454 P PDR ,

. i 1

'. I. Johnson Byron Station Commonwealth Edison Company Unit Nos. 1 and 2

cc

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i Michael I. Miller. Esquire Chairman. Ogle County Board I Sidley and Austin Post Office Box 357 One First National Plaza Oregon. Illinois 61061 )

Chicago. Illinois 60603 '

Mrs. Phillip B. Johnson

] Regional Administrator. Region III 1907 Stratford Lane i U.S. Nuclear Regulatory Commission Rockford. Illinois 61107 i 801 Warrenville Road i Lisle. Illinois 60532-4351 Attorney General 500 South Second Street Illinois Department of Springfield. Illinois 62701 i' Nuclear Safety t '

Office of Nuclear Facility Safety EIS Review Coordinator l 1035 Outer Park Drive U.S. Environmental Protection Agency -

Springfield. Illinois 62704 77 W. Jackson Blvd.

Chicago Illinois 60604-3590 i Document Control Desk-Licensing  :

Commonwealth Edison Company Cmunonwealth Edison Company 1 1400 Opus Place. Suite 400 Byron Station Manager t Downers Grove. Illinois 60515 4450 North German Church Road l Byron, Illinois 61010  !

4 Mr. William P. Poirier. Director

! Westinghouse Electric Corporation Kenneth Graesser. Site Vice President

] Energy Systems Business Unit Byron Station

Post Office Box 355. Bay 236 West Commonwealth Edison Station i Pittsburgh Pennsylvania 15230 4450 N. German Church Road

Byron. Illinois 61010

Joseph Gallo Gallo & Ross

! 1250 Eye St., N.W.

i Suite 302 j Washington. DC 20005 l Howard A. Learner

. Environmental law and Policy l Center of the Midwest l 203 North LaSalle Street i Suite 1390 Chicago. Illinois 60601 l

U.S. Nuclear Regulatory Commission Byron Resident Inspectors Office

4448 North German Church Road Byron. Illinois 61010-9750 i Ms. Lorraine Creek 4

Rt. 1. Box 182

Manteno. Illinois 60950 i

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e REQUEST FOR ADDITIONAL INFORMATION l REPLACEMENT OF 125 VOLT BATTERIES COMMONWEALTH EDISON COMPANY )

BYRON STATION. UNITS 1 AND 2 DOCKET NOS. STN 50-454. STN 50-455

1. The proposed changes to technical specification (TS) Bases for surveillance requirements 3.8.6.1 and 3.8.6.3 add that specific gravity is corrected for electrolyte temperature only for the C&D batteries. What is the basis for the change and should it apply only to the C&D batteries?

2. The licensee states that the battery charging current is less than 3 amps for the C&D battery when it is on charge in accordance with the manufacturer's recommendation. Please provide the supporting data for the statement or provide a copy of the manufacturer's recommendation. Also, does the statement apply when the battery is on float?

3. Does the performance test for the Gould batteries envelope the service test?

Please provide a copy of the service test profile. What is the value of the discharge current when conducting the performance test?

4. In sizing the C&D batteries, what aging factor was used? The licensee's i

submittal refers to a design margin of 10-15 percent. Please provide the

specific value used for the design margin.

5 With regard to battery degradation, what are the values of the last performance test of the Gould batteries? There is a staff concern that if a battery degrades or reaches 85 percent of its expected life, an 18-month period before the next test is conducted may be too long. Please provide a justification for the 18-month interval or propose a revised interval.

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ENCLOSURE

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