ML20006E799

Forwards Safety Evaluation Accepting VIPRE/WRB-1 DNBR Thermal Limit for Westinghouse Optimized Fuel Assembly Fuel

ML20006E799
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	02/13/1990
From:	Chandu Patel Office of Nuclear Reactor Regulation
To:	Kovach T COMMONWEALTH EDISON CO.
Shared Package
ML20006E800	List: ML20006E799 ML20006E801
References
TAC-72242, TAC-72243, NUDOCS 9002260361
Download: ML20006E799 (4)

Text

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DoiketNos.L50-295 I

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' Thomas'J.;Kovach y

Nuclear Licensing _ Manager

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SUBJECT:

1.VIPRE/WRB-1.DNBR THERMAL LIMIT FOR WESTINGHOUSE OFA FUEL Lt (TACN05.-72242AND72243).

By letter dated December 15, 1988, Connonwealth Edison Company (CECO) submitted

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.'a report titled "VIPRE/WRB-1.DNBR Thermal limit 1for Westinghouse:0FA Fuel."

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-For'this report, Ceco uses-the WRB-1 critical: heat flux correlation', a data!

V baseapplicabletoWestinghouseOFA:andRGridLowParasistic-(LOPAR) fuel h ~

'typestand the VIPRELthermal-hydraulic subchannel code'to determine _a 95/95 m'

thermal limit of 1.187..

s The:NRCs staff has reviewed the report and found it acceptable. Our Safety.

Evaluation is enclosed. This-concludes our work on TAC Nos. 72242 and 72243.-

Sincerely,

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y Chandu P. Patel, Project Manager e

^ Project Directorate III-2 J'

Division-of Reactor: Projects.

III, IV, V and Special-Projects i

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. February 13, 1990 l

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i Docket.Nos.=50-295 and.50-304-Thomas J. Kovach PL

Nuclear Licensing Manager l

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.Comonwealth Edison Company-Suite 300 4

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7 Downers Grove. Illinois 60515 J

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SUBJECT:

VIPRE/WRB-1 DNBR THERMAL LIMIT FOR WESTINGHOUSE OFA FUEL 1

(TACNOS.72242AND72243)-

P LBy letter dated December 15, 1988 Commonwealth Edison Company (Ceco). submitted

.a report titled "VIPRE/WRB-1 DNBR Thermal Limit for= Westinghouse.0FA Fuel."

For.this report, CECO uses the WRB-1 critical heat flux correlation, a data baseapplicabletoWestinghouseOFAandRGridLowParasistic(LOPAR) fuel-j types-and the VIPRE thermal-hydraulic subchannel code to determine a 95/95 thermal-limit of.1.187.

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.1 The NRC staff has reviewed the report and found it acceptable. Our Safety Evaluation.is-enclosed. This concludes-our work on TAC Nos. 72242 and 72243.

Sincerely,

/ s'/

0 Chandu P. Patel, Project Manager Project Directorate III-2 Division of Reactor Projects - III, 1

J IV, V and Special Projects

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l Office'of Nuclear Reactor Regulation j

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Enclosure:

As:statedt J

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DISTRIBUTION-

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February 13, 1990-Docket Nos. 50-295 and 50-304-4 Thomas J. Kovach Huclear-Licensing Manager Commonwealth Edison Company-Suite 300

'0 PUS West III-l 1400' OPUS Place Downers Grove, Illinois '60515-

SUBJECT:

VIPRE/WRB-1 DNBR THERMAL LIMIT FOR WESTINGHOUSE OFA FUEL (TAC NOS. 72242 AND 72243)

[

By11etter dated December 15, 1988, CommonwealthEdisonCompany(Ceco) submitted a report titled "VIPRE/WRB-1 DNBR Thermal Limit for Westinghouse OFA Fuel."

4

~Forlthis' report, Ceco uses the WRB-1 critical heat flux correlation, a data

baseapplicabletoWestinghouseOFAandR'GridLowParasistic(LOPAR) fuel

. types and the'VIPRE thermal-hydraulic subchannel code to determine _a-95/95-thermal limittof 1.187.

The'NRC staff has reviewed the report and found it acceptable. Our Safety Evaluation'is enclosed. This concludes our work on TAC Nos. 72242 and 72243.

Sincerely, A

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Chandu P. Patel, Project Manager Project Directorate III-2 Division of Reactor Projects - III, IV, V and Special Projects p

Office of Nuclear Reactor' Regulation Ii

Enclosure:

L-As stated n

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Mr.= Thomas-J. Kovach Zion Nuclear Power Station Commonwealth Edison Company Units 1 end 2 cc:

' Robert J. Yo11en, Esquire Mr. Michael C. Parker, Chief

~ 109 North Dearborn Street -

Division of Engineering 4

Chicago Illinois 60602 Illinois Department of. Nuclear Safety Dr. Cecil Lue-Hing 1035 Outer Park Drive 6th Floor Director-of Research and Development Springfield Illinois 62704

- Metropolitan Sanitary District of Greater Chicago 100 East Erie Street

- Chicago, Illinois 60611

- Phillip Steptoe, Esq..

Sidley and Austin One First National Plaza Chicago, Illinois 60603 Mayor of Zion

' Zion, Illinois 60099 Illinois Department ~of Nuclear Safety ATTN: Manager, Nuclear Facility Safety 1035 Outer Park Drive, 5th Floor 1

Springfield, Illinois 62704

.I U.S. Nuclear Regulatory Cosmission

~ Resident Inspectors Office

.i 105 Shiloh Blvd.-

Zion. Illinois 60099 Regional Administrator, Region III g

U.S. Nuclear Regulatory Commission l

799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 L

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