ML20197G419

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Requests Confirmation That Info in 840322 Memo Re Estimation of Risk Dominant Sequences in Support of Analysis for Des Applicable.Input Required by 840601 or Sooner,If Possible
ML20197G419
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 05/10/1984
From: Hulman L
Office of Nuclear Reactor Regulation
To: Thadani A
Office of Nuclear Reactor Regulation
Shared Package
ML20197G423 List:
References
FOIA-84-663 840510, NUDOCS 8405210438
Download: ML20197G419 (1)


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DISTRIB UT 10N DOCKET FILE AEB R/F FAkstulewicz

. YAY 101984 TQuay Plant File Docket tio.: 50-424/425 I

1 Ell 0RA!'DUlf FOR: Ashok C. Thadani, Chief Relicbility and Risk Assessnent Branch Division of Safety Technology llrian Sheron, Chief Reactor Systens Branch Division of Systens Integration FR0li:

L. G. tiulnan, Chief Accident Evaluation Branch Division of Systens Integration

SUBJECT:

ESTII ATION OF RISK 00!11MA!:T SFCUEr:CES IM SUPPORT OF ACCIDENT EVALUATION BRAtlCll ANALYSIS FOR Tile DPAFT ENVIRON!IENTAL STATE!iEllT FOR V0GTLE STATIO*i In accordance with previous requests, please confirn that the infornation in your ilarch 22, 1984 neno (llopo Crock, Ceaver Valley 2, Nine Mile Point and River Ber.d) is applicable, or identify the risk dominant accident sequences and their probabilities or a surrcoate plant to be used for the evaluation of severe accidents at the Vogtle nuclear plant. Ubile no plant-specific PRA is provided, Appendix 7A to the Voutle Environnenta! Report does contain a limited viscussion of severe ccident sequences for th> Vogtle plant.

The Vogtle nuclear plart is a Uestinghcuse pressuri.W watcr rmctor having a rated thernal power of 3411 t'u, (3565 i*u, nainum). Tha containnent is t large, dry, steel-lirmd, prostr.Esed, nN-t<-n.ionad concrete cylicder with a henispherical done.

There is nc wca"dary contair.nect building. The Vcgtle design it. sinilar in nany recprc+s +n the S!!UPP (C.'llaway/thlf Creek) and Conarche peak designc aMina lesser extent to the Dyron/Braidwood design.

In order for us to neet our contractual dates with our centractor, w need your input Sv June 1 er soonor, if possible. Any cuesticrs regarding this raquest should be addressed to F. /.kstulwic? I X:'4902 ).

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