ML20054H603

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Forwards Program to Establish Seismic Safety Margins Using Revised Criteria & Analytical Methods
ML20054H603
Person / Time
Site: Maine Yankee
Issue date: 06/21/1982
From: Garrity J
Maine Yankee
To: Clark R
Office of Nuclear Reactor Regulation
Shared Package
ML20054H604 List:
References
JHG-82-107, MN-82-117, NUDOCS 8206240253
Download: ML20054H603 (1)


Text

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mal'RE ^%]HARHEE ATOMICPOWERCOMPAR9*

EDISON DRnfE AUGUSTA, MAINE 04336

6, r..N (207) 623-3521

=e9 June 21, 1982 MN-82-117 JHG-82-107 United States Nuclear Regulatory Commission Washington, D. C.

20555 Attention: Office of Nuclear Reactor Regulations Division of Licensing Operating Reactor Branch #3 Mr. Robert A. Clark, Chief

References:

(a) License DPR-36 (Docket No. 50-309)

(b) Maine Yankee-USNRC Meeting May 7, 1982 (c) USNRC Letter to MY dated May 18, 1982

Subject:

Seismic Design Review

Dear Sir:

Enclosed is a description of the p;ogram Maine Yankee will undertake to reconfirm and document plant seismir, safety margins by application of suitable criteria and methods of analvMs.

A specific objective of this program is to demonstrate that the systems and equipment necessary to achieve safe hot shutdown remain available following an earthquake stronger than the plant was designed to withstand.

If our analyses indicate deficiencies, they will be corrected.

The more general objective of this program is to demonstrate that the plant's seismic capability is generally consistent with to that of other New England plants.

This program is still in the formative stage in that commercial contracts for the work involved have not yet been executed. As detailed commercial work scopes are developed, there may be revisions to the program in some areas.

As these work scopes develop, we will be in a position to provide additional information.

We trust you will find this program satisfactory.

If there are any questions, please do not hesitate to call.

Very truly yours,

[p[

MAINE YANKEE ATOMIC POWER COMPANY

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Director John H. Garrity, Senio(icensing Nuclear Engineering & L JHG:pjp 8206240253 820621 DR ADOCK 05000309 Enclosure PDR