ML20203J862
| ML20203J862 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 08/01/1986 |
| From: | Lodwick R VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | Muller D Office of Nuclear Reactor Regulation |
| References | |
| FVY86-69, NUDOCS 8608060041 | |
| Download: ML20203J862 (3) | |
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VERMONT YANKEE NUCLEAR POWER CORPORATION
. i FVY86-69
. RD 5, Box 169, Ferry Road, Brattleboro, VT 05301 ,,,L y ,,
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ENGINEERING OFFICE 1671 WORCESTER ROAD
- FRAMINGHAM, MASSACHUSETTS 01701
- TELEPHONE 617-872-8100 August 1, 1986 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attn Office of Nuclear Reactor Regulation Daniel R. Muller Operating Reactors Branch No. 2 Division of Licensing
References:
a) License No. DPR-28 (Docket No. 50-271) b) Letter, J.G. Weigand to Harold Denton, dated 6/30/86
Dear Sir:
Subject:
Vermont Yankee Containment Safety Study Interim Progress Report By letter, Reference b), Vermont Yankee committed to perform a study of Vermont Yankee's Mark I containment to address enhancements to containment capa-bility which were not analyzed for the WASH-1400 reference plant, assess a best estimate Vermont Yankee specific conditional containment failure probability, and address the five elements presented by Robert Bernero at the June 16, 1986 meeting held in Bethesda.
To document our progress to date, enclosed please find a copy of our study plan, with task completion percentages noted (Attachment 1). Additionally, we have enclosed a copy of our presentation outline for the August 6, 1986 progress meeting in Bethesda (Attachment 2).
We look forHard to this upct; ming opportunity to meet with you and discuss progress on the Vermont Yankee Containment Safety Study.
Very truly yours, I
ER ONT YANKE NUCLEAR POWER CORPORATION I kcu Richard J\ Lodwick Operations Support Manager cc: W. Houston l V. Rooney State of Vermont Uj QO 8600060041 060001 I
ATTACHMENT 1 p
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, , ATTACHMENT 2 4
VERMONT YANKEE
! CONTAINMENT SAFETY STUDY I. PURPOSE AND OBJECTIVE OF EACH TASK INCLUDING PRELIMINARY RESULTS MARK I DESIGN REVIEW o WASH 1400 DESIGN COMPARIS0N o VERMONT YANKEE DESIGN
SUMMARY
VERMONT YANKEE CONTAINMENT CAPABILITY o VERMONT YANKEE APPROACH
. o STUDIES AND RESOURCES USED o ACCIDENTS AND TRANSIENTS STUDIED o RESULTS UTILIZING KEY DIFFERENCES AT VERMONT YANKEE o DEFINITION OF "90%"
o VY CONTAINMENT CONDITIONAL FAILURE PROBABILITY CURRENT MARK I ISSUES i o DEFINITION AND TECHNICAL STATUS OF 5 ISSUES
. o APPLICABILITY AND NEED FOR FURTHER STUDY t
o ACTIVE INDUSTRY AND NRC EFFORTS II. STATUS
- RESULTS TO DATE
- SCHEDULE FOR COMPLETION
.