ML20083G564

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Forwards Midland Independent Design & Const Verification Program:Structural Evaluation of Diesel Generator Bldg
ML20083G564
Person / Time
Site: Midland
Issue date: 01/04/1984
From: Levin H
TERA CORP.
To: Jackie Cook, Eisenhut D, James Keppler
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III), Office of Nuclear Reactor Regulation
Shared Package
ML20083G568 List:
References
ISSUANCES-OL, ISSUANCES-OM, NUDOCS 8401060281
Download: ML20083G564 (2)


Text

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L J January 4,198.

Mr. James W. Cook Vice President Consumers Power Company 1945 West Pornoll Road Jackson, Michigan 49201 Mr. J. G. Keppler Administrator, Region 111 Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Mr. D. G. Eisenhut Director, Division of Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Re: Docket Nos. 50-329 OM, OL and 50-330 OM, OL Midiond Nuclear Plant - Units I and 2 Independent Design and Construction Verification (IDCV) Program Structural Evoluotion of the Diesel Generator Building -

Assessment of the Structural Performance Capability as Potentially Affected by Settlement Induced Crocking Gentlemen:

Attached is our recently completed engineering evoluotion of the structural performance capability of the diesel generator building. This evoluotion was undertaken in accordance with the defined scope of the (DCVP as part of our brooder ossessment of the quality of the design and constructed product of the Midland plant Standby Electric Power system. We are transmitting it to you because of its relevance to ongoing discussions concerning the potential effects of settlement induced cracking on the capability of the DGB to meet intended performance requirements over its service life.

We have concluded that the existing cracks, generally being of small size, are not indicative of a condition that would compromise the copobility of the DGB in meeting its intended performance requirements. Furthermore, it is judged that significant future crccking is unanticipated and the DGB is expected to remain serviceable without further remedial action at this point in time. We have

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8401060281 840104 gDRADOCK 05000329

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TERA CORPORATION 71Ilt_WiSCONStN AVENUE _______ BETHESDA MAINLAND 20814 301 654 8060

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Multiple Addressees reviewed Consumers Power Company's commitments to verify continued serviceability and have concluded that these are acceptoble; however, we have offered certain recommendations for consideration that are intended to improve ovoilable information and reduce operational constroints.

Should you desire further articulation of the bases for our conclusions, we would welcome the opportunity for discussion.

Sincerely, r

l N l.c,i Howard A. Levin Project Manager Midland IDCV Program Enclosure cc:

L. Gibson, CPC.

R. Erhardt, CPC J. Mooney, CPC D. Budzik, CPC D. Quammy, CPC (site)

R. Whitaker, CPC (site)

R. Burg, Bechtel J. Taylor, NRC, I&E HQ T. Ankrum, NRC, l&E HQ D. Hood, NRC, NRR Midland IDCVP Service List HAL/sl

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t TERA CO7PO7ATON

r SERVICE LIST FOR MIDLAPO If0EPEf0ENT DESIGN APO CONSTRUCTION VERIFICATION PROGRAM cc:

Harold R. Denton, Director Ms. Barbara Stomiris Office of Nuclear Reactor Regulat.im 5795 N. River U.S. Nuclear Regulatory Commissim Freeland, Michigan 48623 Washington, D.C. 20555 Mr. Wendell Morshall

. ; James G. Keppler, Regional Administrator Route 10 U.S. Nuclear Regulatory Commission, Midland, Michigan 48440 Region 111

- 799 Roosevelt Road Mr. Steve Godler Glen Ellyn, Illinois 60137 2120 Corter Avenue St. Paul, Minnesota 55108 U.S. Nuclear Regulatory Commission Resident inspectors Office Ms. Billie Pirner Garde Route 7 Director, Citizens Clinic Midland, Michigan 48640 for Accountoble Government Government Accountobility Project Mr. J. W. Cook Institute for Policy Studies Vice President 1901 Que Street, N.W.

Consumers Pcwer Company Washington, D.C. 20009 1945 West Pornoll Rood Jackson, Michigan 49201 Charles Bechhoefer, Esq.

Atomic Sofety & Licensing Board Michael I. Miller, Esq.

U.S. Nuclear Regulatory Commission Isham, Lincoln & Beale Washington, D.C. 20555 Three First National Plazo, Sist floor Dr. Frederick P. Cowan Chicago, Illinois 60602 Apt. B-125 6125 N. Verde Trail James E. Brunner, Esq.

Boca Roton, Florido 33433 Consumers Power Company 212 West Michigan Avenue Jerry Harbour, Esq.

Jackson, Michigan 49201 Atomic Safety and Licensing Board U.S. Nuclear Reguiotory Commission Ms. Mary Sinclair Washington, D.C. 20555 5711 Summerset Drive Midland, Michigan 48640 Mr. Ron Collen

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Michigan Public Service Commission Cherry & Flynn 6545 Mercontile Way Suite 3700 P.O. Box 30221 Three First National Plazo Lonsing. Michigan 48909 Chicago, Illinois 60602

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Mr. Paul Rou Ms. Lynne Bernobei Midland Daily News Government Accountability Project 124 Mcdonald Street 1901 Q Street, NW Midland, Michigan 43640 Washington, D.C. 20009