ML20214G567

Discusses Review of Util 750819 Revised Pressure Response Analysis for Sacrificial Shield Annulus Using RELAP-3. Analysis Acceptable for Application to Shield Wall Design

ML20214G567
Person / Time
Site:	Columbia
Issue date:	10/08/1975
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Deyoung R Office of Nuclear Reactor Regulation
References
CON-WNP-0022, CON-WNP-22 NUDOCS 8605220284
Download: ML20214G567 (1)

Text

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!!. C. DeYoutc, Assist.'nt Lirector for Light Water.yactors. Crapp 1. al.

L!PPSS ? - SAC sIFICIAL SilIELD WirLUS PRE 55URL ESP 0dSE Ftu S dt!.0 WiLL OLSIGH (CJJTI.10ATI0'l CF Thh-E)

In response to your technical assictance requast of Septe kr F., l'87;.

tae Contairmnt Systerm Branch nas reviNaJ De appJicant's esponittal of Au:Just 1).197; (eleport ilPPSS-7. -;-R2-b).

Tne arplicant as provG...

a revise.! pressure res:>onse analysis for the tcrificial :.'. ids annuluc usin,; t..c ALL;P-; coaputer cok (tac..Q t'.. Tedasco to G. EcYour.3, "e y ';,

1 4 ).

fiits anclysis is applicable only to tac s;iirJd u.ll aesig;..

Ple:su note that an analysi'. for tk saf e1J wall La. > da@m 'r:eport WPPSS-N-2-R2-A) was previonly reviewed and accept ' by C;s 4,w;

... Todesco to.. AYoua dated august '.197o).

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C&: Evalau ttor.

Lsing tne appTicant's inpet for a co-node aufel of tv ca,cius, w perforoud similar pressurc rc:nonse analyses usin&olito wy t..u a tiu.a.i/.P-; p.m; t..:er pro :rau.

Our results confiri t.19 Prcssure c.

applicant. For design,ba:.is purposes the applicant.a: Iv. rum:J tce valvos of paa> calculate' Jifferential prasure by a fastar ef 3..:

to accov.t for uncertainties it, tht fluirl dywif e. p.w.h. 2 Tiis it in scordanc; ut th oar reco.v.ienca tion.

t unn:lutions I7cUfo7E applic* nt's use of t.e t' LAF-5 La.'puLr t.ui.. to a. plica-a tio; of a 4 f., desir,;n uargin, anJ tae results of our.:cofirr.tw c:ileslatio:.t. we concluJa tc.a', tue a,vliunt's analysis of f.% asiala d.V..ll 43 15 acca a.,lc for 8pplicatiof. tu 144 shield Wi.11 th.SI: e..

Orenal vn.a i,,,

a.hset 1. f.d NRR Reading CS Reading Robert L. Tedesco, Assistant.irector CSB Reading for Contalnnent Safety Docket File Division of Teqbnical Reyic,#

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S. Ianauar I. Villaly J. Clyin R. Huf ncoan C. Laircs H,coja F. Cchro;dar J. t.udrich

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