ML19250C166

Forwards Rept, NRC Acceptance Criteria for Mark I Containment Long-Term Program. Requests Schedule for Submittal of long-term Program plant-unique Analysis

ML19250C166
Person / Time
Site:	Hatch
Issue date:	10/31/1979
From:	Eisenhut D Office of Nuclear Reactor Regulation
To:	Whitmer C GEORGIA POWER CO.
References
TAC-07939, TAC-07940, TAC-7939, TAC-7940, NUDOCS 7911080373
Download: ML19250C166 (3)

Text

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OCTOBER 3 1 1979 Docket Nos. 50-321 and 50-366 Mr. Charles F. Whitmer Vice President - Engineering Georgia Power Company P. O. Box 4545 Atlanta, Georgia 30302

Dear Mr. Whitmer:

RE:

ACCEPTANCE CRITERIA FOR THE MARK I CONTAINMENT LONG TERM PROGRAM The staff has completed its review of the generic aspects of the Mark I Containment L6ng Term Program (LTP).

The results of this review are reflected in the enclosed acceptance criteria, which are intended to be used to perfonn individual plant-unique analyses for each Mark I facility.

These criteria have been developed from the staff,'.s evaluation of the Mark I LTP Load Definition Report, Plant Unique Analysis Appli-cations Guide, and related suppression pool hydrodynamic experimental and analytical programs, which have been submitted by the Mark I Owners Group.

In developing these criteria, we have considered verbal comments provided by representatives of the Mark I Owners Group on a draft of the criteria issued August 2, 1979.

These comments were presented to the staff during a meeting held on August 15,1979, and supplemented by additional information provided in a letter from General Electric dated September 7, 1979. This information and internal comments by the staff and our consultants have resulted in some modifications to the draft criteria.

However, others of the Owners Group recommendations were not adopted for the NRC criteria, based on the staffss judgment relative to the interpretation of specific cata or analyses.

In certain cases, the staffss generic criteria identify specific hydro-dynamic load assessment techniques that will have to be evaluated on a plant-specific basis. However, deviations from any other generic criteria should be avoided.

The criteria also identify additional experimental verification that must be obtained for " condensation oscillation" load uncertainty. This requirement was communicated to you earlier in our letter dated October 2, 1979.

7911080 3 7 3

!?75 202

Mr. Charles F. Whitmer.

Within 30 days'of your receipt of this letter, we request that you provide the schedule for submittal of the LTP plant-unique analysis for your facility.

In developing this schedule, you should consid6r that we are continuing to target the completion of this program and the tennination of the exemption issued for your facility for December 1980.

The staff presently expects to issue the generic Safety Evaluation Report supporting these criteria in December 1979.

Should you have any questions reg.ar ing this action contact C. Grimes (301-492-8204).

t i

Wst) arrell G. Ei enh t Ac ti Directo,r Division of Operating Reactors

Enclosure:

As stated cc w/ enclosure:

See next page

!?75 203 e

Mr. Charles F. Whitmer

' Georgia Power Company cc:

G. F. Trowbridge, Esquire Shaw, Pittman, Potts and Trowbridge 1800 M Street, N. W.

Washington, D. C.

20036

' Ruble A. Thomas

' Vice President P. O. Box 2625 Southern Services, Inc.

Binningham, Alabama 35202 Ozen Batum P. O. Box 2625 Southern Services, Inc.

Birmingham, Alabama 35202 Mr. W1111a, Widner.

Georgia Power Company Power Generation Department P. O. Box 4545 Atlanta, Georgia 30302 Mr. L. T. Gucwa Georgia Power Company Engineering Department P. O. Box 4545 Atlanta, Georgia 30302 Appling County Public Library Parker Street Baxley, Georgia 31413 Mr. R. F. Rogers U. S. Nuclear Regulatory Commission P. O. Box 710 Baxley, Georgia 31513 1775 204

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