ML20207E790: Difference between revisions

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i References (a): NRC Generic Letter 83-35 from D. G. Eisenhut
i References (a): NRC Generic Letter 83-35 from D. G. Eisenhut
                                       " Clarification of TMI Action Plan Item II.K.3.31", dated November 2, 1983.
                                       " Clarification of TMI Action Plan Item II.K.3.31", dated November 2, 1983.
J                            (b): June 18, 1985 letter from S. A. Varga to D. L. Farrar.
J                            (b): {{letter dated|date=June 18, 1985|text=June 18, 1985 letter}} from S. A. Varga to D. L. Farrar.
t (c): June 11, 1986 letter from L. D. Butterfield to J. Lyons.
t (c): {{letter dated|date=June 11, 1986|text=June 11, 1986 letter}} from L. D. Butterfield to J. Lyons.
i j
i j



Latest revision as of 22:56, 5 December 2021

Advises That WCAP 11145 Will Be Ref to Satisfy Requirements of NUREG-0737,Item II.K.3.31.Util Performing Internal Review of Rept to Verify That Generic Studies Fully Bound Previous Facility Wflash Analyses
ML20207E790
Person / Time
Site: Zion  File:ZionSolutions icon.png
Issue date: 07/08/1986
From: Leblond P
COMMONWEALTH EDISON CO.
To: Harold Denton
Office of Nuclear Reactor Regulation
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.3.31, TASK-TM 1849K, GL-83-35, NUDOCS 8607220423
Download: ML20207E790 (2)


Text

.- . .-. -. _ _ _ _ = . - _ _ . ___- .

s' .. Commonwealth Edison Z 72 West Adams Street, Chicigo, Illinois

- V Address Reply to: Post Office Box 767 Chicago, filinois 60690-07d7 July 8, 1986 I

Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation

U.S. Nuclear Regulatory Commission Washington, DC 20555 t,

Subject:

Zion Nuclear Power Station Units 1 and 2 NUREG-0737 - Item II.K.3.31 j NRC Docket Nos. 50-295 and 50-304 I

i References (a): NRC Generic Letter 83-35 from D. G. Eisenhut

" Clarification of TMI Action Plan Item II.K.3.31", dated November 2, 1983.

J (b): June 18, 1985 letter from S. A. Varga to D. L. Farrar.

t (c): June 11, 1986 letter from L. D. Butterfield to J. Lyons.

i j

Dear Mr. Denton:

I Reference (a) provided licensees with the option of complying with

NUREG-0737, Item II.K.3.31, on a generic basis. Reference (b) transmitted the NRC's SER for Item II.K.3.30, which approved NOTRUMP and stated that a j plant specific analysis should be submitted within one year. Reference (c) transmitted WCAP 11145 to the NRC for review and approval.

WCAP 11145 contains the results of the Westinghouse Owners Group (WOG) generic Small Break Loss of Coolant (SBLOCA) study utilizing the NOTRUMP model discussed above. WCAP 11145 demonstrates that the previously performed SBLOCA analyses for Zion Station remain conservative. Thus, Commonwealth Edison Company is referencing WCAP 11145 to satisfy the requirements of NUREG-0737, Item II.K.3.31.

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Mr. H. R. Denton July 8, 1986 Commonwealth Edison Company is also performing an internal review of WCAP 11145 in parallel with the NRC to verify the WOG's assertion that these generic studies fully bound the previous Zion WFLASH analyses. Pending the successful completion of these reviews, Commonwealth Edison will continue to utilize reference (c) as Zion Station's II.K.3.31 submittal.

If any questions arise concerning this matter, please contact this office.

Very truly yours, P. C. LeBlond Nuclear Licensing Administrator la cc: Resident Inspector - Zion J. A. Norris - NRR i

l 1

1849K

.