ML19329C132
| ML19329C132 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 01/03/1977 |
| From: | Roe L TOLEDO EDISON CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8002120865 | |
| Download: ML19329C132 (2) | |
Text
NRd co;u 195 u.s. NuCLEAa r.EGULATORY M MISSION OOC KET NUM BE H
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50-346 82 h '
NRC DISTRIBUTION FoR PART 50 DOCKET MATERI AL T"'.
FROM:
DATE OF DCCUMENT Toledo Edison Company 1/3/77 Mr. John F. Stolz Toledo, Ohio o4TE RECEivEo Lowell E. Roe 1/5/77 MLETTER ONOTORf 2ED PRCP INPUT FORM NUMBER OF COPIES RECEIVED MRIGINAL
[UNC LASSt FIE D One signed OcoPv DE SC7tt P TION ENCLOSURE Ltr. re our 12/20/76 Itr....Concerning B&W's ECCS Evaluation Model.
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ACKNOW'LEDGED DO NOT REMOVE
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Docket No. 50-346 Serial No. 178 AO w l c q%.),
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Mr. John F. Stolz H1 Chief Light Water Reactors k,
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Dear Mr. Stolz:
This is in response to your letter of December 20, 1976, regarding compliance with 10 CFR Part 50, Appendix K, for our Davis-Besse Nuclear Power Station Unit No. 1.
By means of a transmittal letter dated December 20, 1976, from The Babcock & Wilcox Company to Mr. S. A. Varga of the NRC staff, B&W has submitted a proposed revision to the B&W ECCS Evaluation Model refer-
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enced in NRC's letter of December 2, 1976, as attached to your letter to us.
As identified in B&W's transmittal, the proposed revision is not a significant ECCS Evaluation Model change, since the revision results in calculated peak cladding temperatures within 20 F of those reported in related Topical Reports such as BAW-10105, Revision 1, "ECCS Evaluation of B&W's 177-FA Raised-Loop NSS."
Topical Report BAW-10105 addresses analyses run for the Davis-Besse facility.
Upon NRC approval of B&W's proposed Model revision, Topical Report BAW-10104A, Revision 1, "B&W's ECCS Evaluation Model," will be revised accordingly. Subj ect to the acceptability of the Model revision, the lacking of significant evaluation changes, and in accordance with the provisions of Appendix K to 10 CFR Part 50, no submittal or reanalyses specific to our application (i.e., BAW-10105, Revision 1) is planned.
It is our understanding that only the NRC approval of B&W's proposed revision to the Evaluation Model, and subsequent inclusion in 1 'g evaluation of the 4n BAW-10104A, remain as open items in th em performance.
Davis-Besse Unit No. 1 emergency c
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Yours very truly,
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