ML19250C155
| ML19250C155 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 10/31/1979 |
| From: | Eisenhut D Office of Nuclear Reactor Regulation |
| To: | Counsil W NORTHEAST NUCLEAR ENERGY CO. |
| References | |
| TASK-06-02.A, TASK-6-2.A, TASK-RR NUDOCS 7911080363 | |
| Download: ML19250C155 (3) | |
Text
3 YERA f
UNITED STATES y
g NUCLEAR REGULATORY COMMISSION 3
j WASHINGTON, D. C. 20555
%..... +o OCTOBER 31197S Docket No. 50-245 Mr. W. G. Counsil, Vice President Nuclear Engineering & Operations Northeast Nuclear Energy Company P. O. Box 270 Hartford, Connecticut 06101
Dear Mr. Counsil:
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 Long Term Program (LTP).
The results of this review are reflected in the enclosed acceptance criteria, which are intended to
'be used to perform 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 Guite, 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 infomation provided in a letter from General Electric dated September 7, 1979.
This infomation 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 staff &s judgment relative to the interpretation of specific data or analyses.
In certain cases, the staff,'.s gencric 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 shoJld 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.
1?75 123 7 b110 80 3<3
Mr. W. G. Counsil 2-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 consider
'that we are continuing to target the completion of this program and the termination 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 regarding this action contact C. Grimes (301-492-8204).
0'
- j( {l N 2.[
h Lt aree 1
. Eisen ut, cti.ig Director Division of Operating Reactors
Enclosure:
As stated cc w/ enclosure:
See next page
!?75 124 e
Mr. W. G. Counsil cc William H. Cuddy, Esquire Day, Berry & Howard Counselors at Lew One Constitution Plaza Hartford, Connecticut 06103 Anthony Z. Roisman Natural Resources Defense Council 917 15th Street, N. W.
Washington, D. C.
20005 Northeast Nuclear Energy Company ATTN:
Superintendent Millstone Plant P. O. Box 128 Waterford, Connecticut 06385 Mr. James R. Himmelwright Northeast Utilities Service Company P. O. Box 270 Hartford, Connecticut 06101 Nuclear Regulatory Commission, Region I Office of Inspection and Enforcement ATTN:
John T. Shedlosky 631 Park Avenue King of Prussia, Pennsylvania 19406 Waterford Public Library Rope Ferry Road, Route 156 Waterford, Connecticut 06385 1275 125 t