ML20126F056

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Responds to 850312 Request for Addl Info Re Generic Ltr 83-28 Concerning Salem ATWS Events.Wcap 10271 & Suppl 1 Address Questions Re Item 4.5.3 Concerning Proposed Intervals for on-line Testing
ML20126F056
Person / Time
Site: Byron, Braidwood, 05000000
Issue date: 06/12/1985
From: George Alexander
COMMONWEALTH EDISON CO.
To: Harold Denton
Office of Nuclear Reactor Regulation
References
0254K, 254K, GL-83-28, NUDOCS 8506170310
Download: ML20126F056 (2)


Text

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one First National Plaza. Chicago. tilinois

@ Ccmmrnw:: tith Edison Iidress Reply to: Post Ottice Box 767 Chicago, lilinois 60690 June 12, 1985 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

Braidwood and Byron Stations Supplement Response to Generic Letter No. 83-28, " Required Actions Based on Generic Implications of Salem ATWS Events" NRC Docket Nos. 50-454/455 and 456/457_

References (a): Generic Letter No. 83-28 D. G. Eisenhut 1983 letter to all OLS and CPS dated July 8, (NL-83-0003)

B. J. Youngblood to D. L. Farrar letter dated (b): March 12, 1985.

(c): G. L. Alexander letter to H. R. Denton dated May 7, 1985.

(d): C. O. Thomas letter to J. J. Shepard dated February 21, 1985 transmitting SER on WCAP 10271.

Dear Denton:

Reference (b) requested additional information on ItemsReference (c) 2.1, 2.2.2, 4.5.2 and 4.5.3 of Generic Letter 83-28.provided will be the subject of this letter.

Item 4.5.3_

Applicant needs to provide results of review of existing for proposed intervals for on-line testing considering the concerns oThis inform 4.5.3.1 to 4.5.3.5 in the generic letter. t show how the selected intervals result in high reactor trip sys em availability and. include any proposed Technical Specification changes resulting from this review, odidi fDg6170310850612 ADOCK 05000454 S

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Response

CECO believes that WCAP 10271 dated January 1983 and Supplement 1 to WCAP 10271 dated July 1983 adequately address the questions posed in Item 4.5.3. Reference (d) transmitted the SER approving the WCAP with conditions for referencing the report.

Byron Station has already referenced the report, and the reference is also applicable to Braidwood since their Technical Specfications will be based on Byron's.

Please address any questions that you or your staff may have concerning our response to Generic Letter No. 83-28 to this office.

Respectfully,

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G. L. Alexander Nuclear Licensing Administrator bs cc: US NRC, Document Control Desk Washington DC 20555 L. N. Olshan - LB1 J. Stevens - NRR J. G. Keppler - RIII RIII Inspectors - BY/BW 0254K