ML17194A538

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Forwards Request for Addl Info Re Environ Qualification of safety-related Electrical Equipment
ML17194A538
Person / Time
Site: Dresden, Quad Cities, 05000000
Issue date: 02/24/1982
From: Vassallo D
Office of Nuclear Reactor Regulation
To: Delgeorge L
COMMONWEALTH EDISON CO.
References
IEB-79-01B, IEB-79-1B, NUDOCS 8203190135
Download: ML17194A538 (3)
v • d • e


Text

Docket Nos. 50-249 50-254 50-265' Mr. L. De 1 George Di.rector, Nuclear Licensing Conmonwealth Edison Company P.O. Box 767 Chicago, l11ino1s 60690

Dear Mr. DelGeorge:

DISTRIBUTION Docket File NRC PDR Local PDR.

ORB#2 Reading D. Eisenhut OELD IE-1 J. Hegner R. Bevan S. Norris NSIC ACRS-10 J. Heltemes Z. Rosztoczy w; Butler R. Hall D. Verrelli Gray File

,FEB 2 4 1982

Subject:

Environmental Qualification of Safety-Related Electrica Equipment - Request for Additional Information Re:

Dre~den-Unit 3 and Quad Cities Units 1 and 2 We are currently reviewing your submittals 1n response to our Safety Evaluations on environmental qua11f1cat1on of safety-related electrical equipment for the referenced facilities. Certain. addft1ona1 1rlfonnat1on is necessary in order for us to complete qur reviews.

We have detennined that the main steam line break (MSLB) is th~ limiting accident for establishing equipment qualification temperature profiles in BWR containments; your submittals-referenced the recirculat1on11ne break (LOCA) analyses. Although you reported the results of MSLB analyses for Quad Cities 1 and 2, no supporting information was provided.

No MSLB analysis was available for Dresden 3.

As discussed 1n the enclosed Request

  • for Additional Information, performance of the plant... specific analyses, or your adoption of an acceptable generic containment temperature qualifica-tion profile, is requested.

Please inform us within 45 days of receipt of this letter regarding your intent to adopt the generic profile or to perform the plant-specific analyses and provide a schedule for subm1tt1ng that information. -

The reporting and/or recordkeep1ng requ1r1ements contained i*n this letter affect fewer than ten respondents; therefore, o~m clearance is not required under* P.L 96-511.

Enclosure:

Reque$t for Additional Info at1o Sincerely, QiRI GINiAL SIG.NEID BY Domenic B. Vassallo, Chief Operating-* Reactors Bra'1~h #2 Dfv1s1on of Licensing

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  • Mr. L. DelGeorge Corrrnonwea1th Edison.Company cc:
  • *Mr. D. R *. St i chnoth President Iowa-Illinois Gas and Electric Company 206 East Second Avenue Davenport. Iowa 52801 Mr. Phi 1 i p Steptoe.

Isham, Lincoln & Beale

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Counselors at Law -

Ohe First National Plaza,*42nd Floor

.Mr. Nick Kalivianakas.

-Plant Superintendent Quad Cities Nuclear Power Station 22710 - 206th Avenue - North*

Cordova, Illinois 61242 M~1ine Public.Library 504 - 17th Street Moline, Illinoii 61265 Susan N. Sekuler

  • Assistant Attorney General Environmental Contro1 Division 188 W. *Randolph Street Slfi te 2315 Chicago, Illinois p0601 Resident lnspector U.S. Nuclear Regulatory Corrrnissio.n 22712 206th Avenue*N~

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~ordova~ lllinois 61242 James L. Ke 11 ey, Chai nn*an Atomic Safety and Licensing Board Panel U.S. Nuc1ear Regulatory Commission Washington, D.C.

20555 Dr. Peter-A. Morris Atomic Safety and Licensing Board Panel U.S. Nuclear Regu1atory Commission Washington, D~t. 20555.

Dr. Richard F. F~stei P.O. Box 4263.

  • Sunriver, Oreg~n 97701 The Honorable Tom Corcoran United States Ho~se of Representatives Washington, O.C.

20515

  • Mr. Douglas Scott**

Plant Superintendent Dresden Nuclear Power Station Rural Route fl Morris *. Illinpis 60450 Morris Public Library 604 Liberty Street Morris. Illinois 60451 U. S. Nuclear Regulatory.Commission Resident Inspector's Office.

Dresden Stati.on RR jl

~~rris, Illinois 60450 Mary Jo Murray, Esq.

Assistant Attorney General Environmenta1 Control Division 188 W. Randolph Street Suite 2315 Chicago, Illinois 60601 John F. Wolf, Esq.

3409 Shepherd Street Chevy Chase,*Ma~~land 20015 Dr. Linda W. Lfttle 500 Hermitage Drive

  • Raleigh, _North Carolina 27612 Dr. Forrest J. Remick 305 East Hamilton Avenue State College, Pennsylvania~;l6801 James G. Keppler Regional Administrator, Region III U.S. Nuclear Regulatory Commission..

799 Roosevelt Road.

  • Glen Ellyn, IL 60137
  • ~*

Containment Systems Branch Re*quest for Addi ti.anal Infonnation Main Steam Line Break

.9 Dresden, Unit 3 and Qua~ Cities, Units 1 & 2

  • Docket Nos.:

50-249, 50-254. & 50-265

~*

The NRC staff has detennined that*the main steam line break (MSLB) is the*

limiting accident resulting in peak.containment ~ereperatures in.*BWRs, for the purpose of establishing equipment qualification profiles. Therefore, the staff requests Commonwealth Edison to perfonn and submit MSLB analyses for Dresden, Unit 3 and Quad.Cities, *u~its 1 and 2. These.. anaiyses should be perfo.rmed in accordance with the guidelin.es of NUREG-0588 and should cover a spectrum of.break sizes to determine the worst case; i.e., maximum*

temperature.

Al though Commonweal th Edi son reported the results o.f ~LB

. analyses for Quad Cities, Units 1 and 2, no supporting information was pro-vided.

NoMSLB analysis was available for Dresden, Unit 3. In lieu* of providing the MSLB analyses *for.. these plants, it would be acceptable for*

Commonwealth Edison to adopt the generic BWR ternperat~re profile of Figure C-1 of ~JREG-0588. The peak contadnment tempera tu re from this curve.. is 340°F.

Commonwealth Edison should ;nform the NRC staff of their intended action for establishing cont~.inment qualification temperafure profiles within 45 days of receipt of thi~ request.

..

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