ML19324B743

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Responds to Generic Ltr 89-16 Re Installation of Hardened Wetwell Vent.Util Expects to Establish Specific Design Criteria to Install Enhanced Containment Overpressure Protection Capability by End of 1992 Refueling Outage
ML19324B743
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 10/30/1989
From: Tremblay L
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-89-99, GL-89-16, NUDOCS 8911080132
Download: ML19324B743 (2)


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.JV. ERMONT; YANKEE- l 2 pNdCLEAR: POWER CORPORATION j V

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ENGINEERING OFFICE 600 MA:N GTRE(:T DOLTON. M A c 3740 (I s *

(508) 770-6711 c1 i October 30,1989 t BVY 89-99 l

' United States Nuclear Regulatory Commission j Document Control Desk Washington, DC 20555 Refemnces: a. License No. DPR.28 (Docket No. 50-271)

b. Letter, VYNPC to USNRC, FVY 88-16, dated 3/1/88
c. . Letter, VYNPC to USNRC, BVY 89-83, dated 9/1/89 l
d. Letter, USNRC to VYNPC, NVY 89-191, dated 9/1/89 .

(Generic Letter 89-16) '

Subject:

Installation of a Hardened Wetwell Vcm 3

Dear Sir:

The purmse of this letter is to comply with the NRC Staff's request to respond to Generic

' Letter 89-16 ( Reference (d)).

J In Reference (c), Vermont Yankee provided a Containment Safety Initiatives Status Update, i This update indicated our plans regarding installation of an enhanced containment overpressure <

protection capability (hardened wetwell vent) at Vennont Yankee. Reference (c) also provides a .,

conceptual description of the planned vent, along with Vermont Yankee's commitment to continue -'

to support and follow ongoing efforts to resolve severe accident issues with the goal of improving overall plant safety.

On September 15,1989 Vermont Yankee received Generic Letter 89-16 (Reference (d)),

which transmitted the following instructions:

"The NRC staff requests that each licensee with a Mark I plant provide notification of f its plans for addressing resolution of this issue. If the licensee elects to voluntarily proceed with plant modifications, it should be so noted, along with an estimated schedule, and no further information is necessary. Otherwise, the NRC staff requests that the above cost information be provided. In either event, it requests that  ;

cach licensee respond within 45 days of receipt of this letter." i c  ;

' As stated in Reference (c), Vermont Yankee expects to establish specific design criteria such that we can install enhanced containment overpressure protection capability by the end of the 1992 refueling outage.

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t (.. ,,W- e We will keep the NRC informed on the progress of our design and our final plans for

' implementation If you have any questions or concems, please do not hesitate to contact us. -

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,, Very truly yours, VERMONT YANKEE NUCLEAR POWER CORPORATION  :

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Leonard A. Tirmbley, Jr.

SeniorI.icensing Engineer cc: USNRC Region I Administrator

' USNRC Resident Inspector- VYNPS '

- USNRC Project Manager- VYNPS t

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