ML20094M853
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r January 4,1983 L.
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Mr. James W. Cock Vice President I
Consumers Power Company 1945 West Pornoll Road Jackson, Michigan 49201 r-Mr. J. G. Keppler Administrator, Region ill Office of Inspection and Enforcement l__
U.S. Nuclear Regulatory Commission L.
799 Roosevelt Road Glen Ellyn, IL 60137
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Mr. D. G. Eisenhut Director, Division of Licensing Office of Nuclear Reactor Reguiction r-i U.S. Nuclear Regulatory Commission L
Washington, D.C. 20555 Re: Docket Nos. 50-329 OM, OL and 50-330 OM, OL
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Midland 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 Cracking
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Gentlemem Attoched is our recently completed engineering evoluotion of the structural performance capability of the diesel generator building. This evoluotion was
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undertaken in accordance with the defined scope of the IDCVP as port of our brooder assessment of the quality of the design and constructed product of the Midland plant Standby Electric Power system. We ore transmitting it to you r-
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because of its relevance to ongoing discussions concerning the potential effects of settlement induced crocking on the capability of the DGB to meet intended performance requirements over its service life.
We have concluded that the existing crocks, generally being of small size, are not indicative of a condition that would compromise the copability of the DGB in
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meeting its intended performance requirements. Furthermore, it is judged that L
significant future crocking is unonticipated and the DGB is expected to remain serviceable without further remedial oction at this point in time. We have l
B408150741 840718 PDR FOIA RICE 84-96 PDR TERA CORPORATION 7101 WSCONSIN AVENUE BETHESDA. MAThlAND 20S14 301 654 S % 0
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Multiple Addressees,
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reviewed Consumers Power Company's commitments to verify continued i
serviceability and have concluded that these are acceptable; however, we have r-offered certain recommendations for consideration that are intended to improve i
ovellable information and reduce operational constraints.
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I Should you desire further articulation of the bases for our conclusions, we would '
welcome the opportunity for discussion.
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Sincerely, r-I r
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L-Howard A. Levin Project Manager Midland IDCV Program
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u Enclosure I
cc:
L. Gibson, CPC.
g R. Erhardt, CPC J. Mooney, CPC D. Budzik, CPC D. Quammy, CPC (site)
R. Whitaker, CPC (site)
R. Burg, Bechtel r
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J. Taylor, NRC, l&E HQ T. Ankrum, NRC, l&E HQ D. Hood, NRC, NRR Midland IDCVP Service List HAL/sl 2
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l TERA CORDORATON 1
SERVICE LIST FOR MIDLAPO INDEPEPOENT DESIGN
.r Ato CONSTRUCTION VERIFICATION PROGRAM cc:
Harold R. Denton, Director Ms. Barbara Stamiris Office of Nuclear Reactor Regulat. ion 5795 N. River U.S. Nuclear Regulatory Commission Freeland, Michigan 48623 Washington, D.C. 20555 Mr. Wendell Marshall
. ; James G. Keppler, Regional Administrator Route 10 L
U.S. Nuclear Regulatory Commission, Midland, Michigan 48440 Region 111
,F 799 Roosevelt Road Mr. Steve Godler L
Glen Ellyn, Illinois 60137 2120 Carter Averaie p
U.S. Nuclear Regulatory Commission i
Resident inspectors Office Ms. Billie Pirner Garde Route 7 Director, Citizens Clinic Midland, Michigan 48640 for Accountable Government r-i Government Accountability Project L
Mr. J. W. Cook Vice President Institute for Policy Studies 1901 Que Street, N.W.
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Consumers Power Company 1945 West Parnall Road Washington, D.C. 20009 Jackson, Michigan 49201 N ies W fer, %.
r Atomic Sofety & Licensing Board L
$$M,',4*1'3Ti, u.S. Nuciear Reguiotory Commission Three First National Plazo, W shington, D.C. 20555
- F ick P. Cowan Chi o,11 nols 60602 g
6125 N. Verde Trail James E. Brunner, Esq.
Consumers Power Company Boca Roton, Florido 33433 212 West Michigan Avenue dson, Wehlgan 49201 k ry N % %
Atomic-Sofety and Licensing Board Ms. Me Sinclair U.S. Nuclear Regulatory Commission S711 Summrw Wiw W shington, D.C. 20555 Midland, Michigan 48640 Mr. Ron Collen g 7, Michigan Public Service Commission Suite 3700 G5 Mercantile Way
.O. B a 30221 Three First Natieno! Plaza
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Chicago, Illinois 60602 Lansing, Mich,igan 48909 J
Mr. Paul Rau Ms. Lynne Bernabel Government Accountability Project Midland Dolly News 1901 Q Street NW 124 Mcdonald Street Washington, d.C. 20009 Midland, Michigan 48640
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l-TERA CORPORATION
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.n ATTAC>wENT A. Pl.3201.001, REV 2 ENGIPEERING EVALUATION COVER SI-EET
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Structural Evaluation of the Diesel Generator Bldg.
CONT. lD. NO. 3201 -001 031 TITE 02 I
NO. OF SHTS.
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PRO. LECT: CONSUMERS POWER COMPANY MIDLAto IDCV SUPERSEDES ENG. EVAL. NO.
REV.NO.
REVISION ORIGINATOR DATE REVIEWED BY DATE APPROVED BY DATE 0
Original 12/30/83 Jg 12/30/f 3,p 1/4/84 c
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IIl.5-2,9 T.
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TOPIC NUMBER Deslan Considerations, Foundations. Concrete / Steel Desion Civil / Structural
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TOPIC TITLE METHOD / EXTENT OF REVIEW Review of Midland project generated information including calculations, consultant 1.
c reports, testimony, etc.
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Independent calculations and evaluations by IDCVP Review Team.
IL PURPOSE Evaluation of settlement induced cracking as it may potentially affect intended performance requirements and serviceability of the diesel generator building, u
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CONTENTS (SEE SECTION 2., PI-3201-001)
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E ABSTRACT E OVERVIEW OF REVIEW PROCESS E BASES FOR SAMPLE SELECTION p-
,L E SOURCES OF INFORMATION/ REFERENCES E eACxGROUND DATA (INPUTS, ASSUMPTIONS, RELATED CALCULATIONS)
E ACCEPTANCE CRITERI A (CODES, ST AtOARDS, FSAR, NRC GUIDANCE, RECULATIONS)
E EVALUATION (DOCUMENTATION OF REVIEW AGAINST, CHECK LIST,(ACCEPTANCE CRITERIA) f E CONCLUSIONS l'
TERA CORPORATION
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