ML20010F739

Forwards BAW-10149, Power Train - Hybrid Compuer Simulation of B&W Nuclear Power Plant. Rept Provides Addl Info Re Extent of Power Plant Modeling & Addresses NRC Question 4. W/O Encl

ML20010F739
Person / Time
Site:	Midland
Issue date:	09/02/1981
From:	Taylor J BABCOCK & WILCOX CO.
To:	Hood D Office of Nuclear Reactor Regulation
References
NUDOCS 8109110263
Download: ML20010F739 (2)

Text

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Babc a & Wilcox Nucletr Power Generation Division e

a McDermott company 3315 Old Forest Road P.O. Box 1260 i Lynchburg, Virginia 24505 (804) 384 5111 d

SD " $ 3 s6

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September 2, 1981 Mr. Darl Hood, Project Manager /b d Consumer Power Co., Midland Project Division of Project Management Q Dg gf .'__\

Office of Nuclear Reactor Regulation 2'g1 CI U. S. Nuclear Regulatory Commission Washington, DC 20555 g O h

1. ' e

Dear Mr. Hood:

a G Enclosed is a copy of Topical Report BAW-10149, " POWER TRAIN-Hybrid Computer Simulation of a Babcock & Wilcox Nuclear Power Plant".

This report describes an updated version of B&W's POWER TRAIN code and is provided for your transmittal to Mr. Walton Jensen. This submittal is intended to provide additional information about the extent of power plant modeling and also to address NRC's question No. 4. This is one of a group -

of questions sent to us by your office 4/4/79 concerning BAW-10070, a topical C report still under review, describing an earlier version of POWER TRAIN.

This response is provided to meet in part our commitment made in the June 25, 1981 meeting on Midland FSAR Chapter 15 accident analysis wherein B&W will address outstanding NRC questions on BAW-10070 with the more compre-hensive Topical Report BAW-10149.

We plan to submit a revision to this topical describing methods and application of the code in FSAR analyses and will include benchmarking this version of the code against the earlier version described in BAW-10070. This later submittal, with a complete Section 4 entitled " Applications" is targeted for completion by the end of 1981 and will be the document that will address the remain 1ng questions of 4/4/79 on BAW-10070.

Ve truly yours, J. . Tay (

Manager,[1r Licensing g' I

JHT/fw  ;

Enclosures cc: T. J. Sullivan - Consumers Power Co.

R. B. Borsum - Bethesda - B&W Office 8109110263 810902 PDR ADOCK 05000329 A PDR l j

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o-General Information: Question 4 The steam generator is described in generality with respect to the finite difference equations u:ed to compute the unit thermodynamics. The nodel detail used in accident analyses, the heat transfer regimes and correlations modeled, and the unit hydroaynamics are not present.ed. Provioe descriptions for each of these aspects of the steam generator model to enable a more adequate understanding of the OTSG model.

Response

The attached Topical Report BAW-10149 prov' des the cquested detailed description of steam generator model.

l l

l Babcock & \Vilcox

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