ML20140A653

Forwards B&W Rept 77-1159832-00, Pressurized Thermal Shock Evaluation Per 10CFR50.61 for Reactor Vessels in Byron & Braidwood Units 1 & 2 & Westinghouse WCAP-10962, Zion Units 1 & 2 Reactor Vessel Fluence & Ref Temp..

ML20140A653
Person / Time
Site:	Byron, Braidwood, Zion, 05000000
Issue date:	01/17/1986
From:	George Alexander COMMONWEALTH EDISON CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML20140A658	List: ML20140A653 ML20140A671 ML20140A682
References
REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR 1151K, NUDOCS 8601230286
Download: ML20140A653 (1)

Text

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h Commonwoahh Edison

) One First Nation *! Plus Cheergo lttinota O Addrzss Reply to. P:st Office Box )67 Chicago. Illinois 60690 January 17, 1986 i

j Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Cotianission Washington, DC 20555 l

l

Subject:

Zion Station Units 1 and 2 '

Byron Station Units 1 and 2  ;

Braidwood Station Units 1 and 2 Pressurized Thermal Shock

! NRC Docket Nos. 50-295/304, 50-454/455 i and 50-456/457 i

Reference (a): Pressurized Thermal Shock 10 CFR 50.61 (b): Babcock and Wilcox Document 77-1159832-00 (c): Westinghouse WCAP-10962 i

Dear Mr. Denton:

This letter is being provided to meet the requirements of 10 CFR 50.61(b)(1). For the Byron and Braidwood units the requested information is contained in reference (b). For the Zion units the requested information is contained in reference (c). Since all of the RTPTS values are below the NRC i screening values, no further submittats will be made unless there is a

! significant change in projected values.

Tables 1 through 4 from reference (b) will be included in the next j amendment to the Byron /Braidwood FSAR to meet the new requirement contained in

! 10 CFR 50.34(b)(9).

l Forty copies of this letter with attachments are being provided for l

! your use.

Please address any questions that you or your staff may have concerning our response to this office.

i 3 Respectfully,

%1]h p

S

0. L. Alexan er j Nuclear Licensing Administrator Atts.

cci US NRC Document Control Desk RI!! Inspectors 2/BY/BW ,, ,

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