ML20127P027
| ML20127P027 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 05/06/1976 |
| From: | Paulson W Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9212010483 | |
| Download: ML20127P027 (2) | |
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UNITE *) STATES O
4 NUCLEAR REGULATORY COMMIS$10N
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wAsHia#GTON. D. C. 20086
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HAY 8 B76 DOCKETS NOS.:
50-219,53-22Q) 50-237, 50-245, 50-249, 50-254, 50-259, 50-260 450-263 '50-265, 50-271, 50-277, 50-278, 50-293, 50-296, 50-298, 50-321, 50-324, 50-325, 50-331, 50-333, 50-341, 50-354, 50-355, and 50-366.
LICENSEES:
Boston Edison Company, Carolina Power 6 Light Company, Commonwealth Edison Company, Detroit Edison Company, Georgia Power Company, Iowa Electric Light & Power Company, Jersey Central Power & Light Company, Nebraska Public Power District, Niagara Mohawk Power Company, Northeast Nuclear Energy Company, Northern States Power Company, Philadelphia Electric Company, Power authority State of New York, Public Service Electric and Gas, Tennessee Valley Authority, Vermont Yankee Nuclear Power Corporation.
FACILITIES:
Oyster Creek Nuclear Generating Station, Nine Mile Point Unit 1. Pilgrim 1, Dresden Units 2 and 3, Millstone Unit 1 Quad Citics Units 1 and 2. Monticello, Peach Bottom Units 2 and 3, Browns-Ferry Unit 1, 2 and 3. Vermont Yankee, Hatch Units 1 and 2, Brunswick Units 1 and 2, Duane Arnold Energy Center, Cooper Fitzpatrick, Enrico Fermi Unit-2, and Hope Creek Units 1 and 2.
SUMMARY
OF MEETING HELD ON APRIL 8, 1976 WITH REPRESENTATIVES OF THE MARK I OWNERS GROUP On April 8,1976, a meeting was held in Bethesda with representatives of the Mark I Owners Group, the General Electric Company, and their consultants. The purpose of the meeting was to discuss plant specific analyses of the Mark I torus support structure. A list of meeting attendees is shown on the enclosure.
Summary The Mark I Owners Group and their consultants believe that there is 19 to 24% conservatism in the downward Most Probable Loads (MPL) to be used in the plant specific analyses.
They believe that they can demonstrate
.a structural factor of safety of at least two in the downward direction without taking credit for the conservatisms.
9 9212010483 760506 PDR ADOCK 05000263-P PDR
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Meeting Sumary 1
1 We stated that in the upward direction, a multiplier of 1.5 should be applied on the upward MPL to take into account the uncertainty and sensitivity l'
of the upward loads. Conservatisas-that may exist in the-upward MPL i
- can be taken into consideration if they are proper y justified to the NRC.
l GE representatives discussed their assessment of the conservatisas in' the MPL. We stated that additional justification of the conservatisms 1
l would be required.
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i W.-A. Paulson Operating Reactors Branch #3 Division of Operating Reactors 4
Enclosure:
5 Attendance List i
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8 ENCLOSURE j
ATTENDANCE LIST
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MEETING '- NRC. MARK I OWNERS 4-TECHNICAL REVIEW SUBCOHHITTEE I
4 Nuclear Regulatory Commission-Teledyne j
j' W. A. Paulson
'J. A. Hayward 1:. J. DeBevec 1
R. J. Stuart R. E. Shewmaker:
Northern States Power 1
C. H. Hofmayer L. C. Shao G. Neils i
C. I. Grimes j '
G. E. Lear G. Lainas J. Kudrick s
i C. Anderson l
P. Baranowski
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R. L. Tedesco J. C. Guibert f
I. A.-Stridiron NUTECH l
R. E. Keever' l
- N. W. Edwards General Electric
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F. E. Gregor.
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Southern Services Inc.
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