BVY-90-125, Advises That Util Intends to Install Containment Overpressure Protection Capability by Means of Passive Hardened Wetwell Vent During Next Refueling Outage Scheduled for Mar 1992

Advises That Util Intends to Install Containment Overpressure Protection Capability by Means of Passive Hardened Wetwell Vent During Next Refueling Outage Scheduled for Mar 1992

ML20066B743
Person / Time
Site:	Vermont Yankee
Issue date:	12/31/1990
From:	Pelletier J VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-90-125, NUDOCS 9101080313
Download: ML20066B743 (2)

Text

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VERMONT 1 YANKEE NUCLEAR POWER CORPORATION BVY 90-125

- Ferry Road, Brattleboro, vT 05301-7002 f ENGINE IN OFFICE 500 MAIN SiREET BOi. TON MA D1740

($003 779 07 t t December 31, 1990 United States Nuclear Regulatory Commission Document Control Desk Washington, .DC 20555 l l

References:

a) License No. DPR 28 (Docket No. 50 271) b) Letter, VYNPC to USNRC, BVY 89 83, dated 9/1/89 c) ~ Letter, VYNPC to USNRC, BVY 89 99, dated 10/30/89

) Letter, USNRC to VYNPS, NVY 90 007, dated 1/19/90

) - Letter, VYNPC to USNRC, BVY 90 037, dated 3/26/90 Memo, Fairtile- to Nerses, NVY 90-157, dated 8/20/90

Dear Slr:

l

Subject:

Design and Installation of Containment Overpressure Protection Capability The purpose of this-letter is to inform you that Vermont Yankee intends to go forward with plans to install Containment Overpressure Protection (COP)-

capability by means of a passive hardened wetwell vent. It is our understanding that all NRC questions regarding the conceptual design of the proposed vent

have.-been addressed.

Vermont Yankee initially committed to installation of the COP by References (b) and (c). The NRC confirmed the acceptability of our plans in Reference (d),

An update 'of our plans to install:the COP under the rules-of 10CFR 50.59 and-more detailed information regarding the planned passive nature of the hardened ,

vent was 'provided by Reference -(e). In -addition, during the meeting with' the l

.NRC staff, on April: 30,1990,- Vermont Yankee presented plans to install the- l 3assive COP in detail. The. minutes of this meeting were documented by the 4RC in Reference'(f). These minutes. indicated that Vermont Yankee's proposed-  ;

wetwell' vent design may require NRC review and approval. Since thic meeting '

and the publication of' these minutes, we have responded, via telecon, to numerous :NRC staff questions, it is our understanding that all of the- NRC i

staff? questions have been addressed.

Vermont Yankee must begin the process of design preparation and l

' equipment. procurement shortly in order to provide for installation of the COP l

during our next refueling outage (March 1992). It is our understanding based- i

'on Reference (d) and the fact that all NRC Staff questions have been addressed, '

that you are satisfied that our plans meet your needs for hardened wetwell vent capability at Vermont Yankee. If' this is not the case, please nctify us

- Immediately.

91o1080313 9o1231 1

()

ADOCK 050o (

p. 4DR

._ VERMONT YANKEE NUCLEAR POWER CORPORATION:

U.S. Nuclear -Regulatory Commission-  ;

December 31' 1990 ,

Page ~Should you have any questions regarding our plans related to this issue or require further information, please contact this office.

Very truly yours, Vermont Yankee Nuclear Power Corporation

.- / Paw =s .

James P. Pelletter Vice President, Engineering i

~cc: - . USNRC Region I Administrator ,

' USNRC Resident inspector, VYNPS '

USNRC Project Manager, .VYNPS

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