ML20039F405

Forwards Revision 3 to BAW-10104, Small Break ECCS Evaluation of B&W 205.FA NSS Using Dec 1976 ECCS Evaluation Model. Mixture Level Remains Above Core Throughout Transient.No Cladding Temp Excursion Occurs

ML20039F405
Person / Time
Site:	05000561
Issue date:	12/23/1977
From:	Taylor J BABCOCK & WILCOX CO.
To:	Varga S Office of Nuclear Reactor Regulation
Shared Package
ML111090060	List: ML19208A315 ML19208A325 ML19250B014 ML19250B445 ML19250B480 ML19250B482 ML19254C975 ML19254G119 ML19254G128 ML19255K396 ML19255K397 ML19257E274 ML19257F047 ML19257F050 ML19260B823 ML19260E912 ML19260E913 ML19260E914 ML19261C469 ML19262E467 ML19262F230 ML19263D836 ML19263F605 ML19263G068 ML19268C086 ML19268C087 ML19269F130 ML19271A085 ML19271A172 ML19273B051 ML19273D308 ML19274A409 ML19274E085 ML19275B428 ML19275B444 ML19275C327 ML19275C328 ML19275G904 ML19275G918 ML19275H308 ML19275H317 ML19275H339 ML19275H341 ML19275H375 ML19275H401 ML19275H405 ML19275H493 ML19275H655 ML19275H660 ML19276D594 ... further results
References
FOIA-80-515, FOIA-80-555 NUDOCS 8201120423
Download: ML20039F405 (1)

Text

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Babcock &Wilcox go, o m.,au,, o,,,,

P.o. Box 1260, Lynchburg, Va. 24505 Telephone:(804) 384-5111 December 23, 1977,,.(

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([I\\f Mr. S. A. Varga, Chief lk G4kl370 28A

• LWR Branch No. 4 4

u.g Division of Project Management Office of Nuclear Reactor Regulation L.

d U.S. Nuclear Regulatory Comission Washington, D.C.

20555 g

Dear Mr. Varga:

Attached are the results of a worst-case small break ECCS evaluation of the B&W 205 Fuel Assembly plant as requested in your letter of May 10, 1977.

This analysis was performed with B&W's December 1976 Small Break ECCS Evaluation Model.

The results of this analysis shows that the mixture level remains above the core throughout the transient and therefore no cladding temperature excursion occurs. The results in BAW-10074A, thus, remain valid and are conservati ve.

This submittal completes the responses to all questions asked by the Staff on BAW-10102.

A prompt review and approval of this analysis and the large break analysis submitted on September 30, 1977 is requested.

Formal approval of BAW-10102 is requested following approval of the above analyses.

If you have questions concerning this response, please contact me or Henry Bailey (Ext. 2678) of my staff.

Very truly yours, g,;u t.$

ta' b /

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James H. Taylor t

Manager, Licensing JHT/dsv cc: R.B. Borsum (w/o attach)

T.H. Novak - NRC 780240212 8201120423 810403 PDR FOIA MADDEN 80-515 PDR l

The Babcock & Wilecx Cemoany / Established 1867,

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