ML20062K988

Viewgraphs Presented at 801205 Meeting

ML20062K988
Person / Time
Site:	Midland
Issue date:	12/05/1980
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML20062K986	List: ML20062K988
References
NUDOCS 8101100746
Download: ML20062K988 (49)

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ENCLCSURE 2 VIEWGRAPH SLIDES USED DURING 12/5/80 MEETING 810110 0 NOT

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Enclosure 1 ATTENDEES December 5, 1980 Name Organization / Position Darl Hood DPM/NRR Lic. Proj. Mgr.

Edward N. Levine Weston Geophysical Richard Holt Weston Geophysical Dennis M. Budzik Consumers Power Co.

Zenon Cybriwsky Weston Geophysical J. W. Cook Consumers Power Co.

R. C. Bauman Consumers Power Co.

T. E. Johnson Bechtel/ Chief Civil R. P. Kennedy Struct. Mechanics Assoc.

F. Rinaldi NRC/NRR/SEB George C. Klimkiewicz Weston Geophysical Corp.

Joseph Kane* NRR/HGEB/GES George Lear

• NRR/HGEB Leon Reiter* NRC/GSB Jeff Kimball NRC/GSB R. E. Jackson NRC/GSB B. Dhar Bechtel/ Midland Civil T. R. Thiruvengadam Consumers Power Co./ Civil Engineering Dinesh C. Gupta NRR/HGEB/GES John P. Matra, Jr. NSWC

• Part-time

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cc: Commander, Naval Surface Weapons Center ATTN: P. C. Huang G-402 White Oak i

Silver Spring, fdaryland 20910 4

Mr. L. J. Auge, Manager Facility Design Engineering i Energy Technology Engineering Center P. O. Box 1449 Canega Park, California 91304 3

Mr. William Lawhead

U. S. Corps of Engineers I!CEED - T 7th Flecr a77 fiichican Aver.ue 1 Detroit, Michigan 48225 a

Charles Dechhcefer, Esc.

Atcmic Safety & Licensing Scard

U. S. Iuclear Regulatory Commission Hashington, D. C. 20555

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) Mr. Gustave A. Linenberger 4

Atcmic Safety & Licensing Ecard U. S. Nuclear Regulatory Commission j Pashingten, D. C 20555 Dr. Frederick P. Cowan 1 Apt. B-125 6125 N. Verde Trail Eoca Raton, Florida 33433 4

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Mr. J. W. Cook Vice President Consumers Power Company 1945 West Parnall Road Jackson, Michigan 49201 l'

cc: Michael I. Miller, Esq. Mr. Don van Farowe, Chief Ronald G. Zamarin, Esq. Division of Radiological Health Alan S. Farnell, Esq. Department of Public Health Isham, Lincoln & Beale P.O. Box 33035 -

Suite 4200 Lansing, Michigan 48909

1 First National Plaza Chicago, Illinois 60603 William J. Scanlon, Esq, James E. Brunner, Esq. 2034 Pauline Boulevard Consumers Power Company Ann Arbor, Michigan 48103 212 West Michigan Avenue Jackson, Michigan 49201 U. S. Nuclear Regulatory Cc=nission Resident Inspectors Office -

Myron M. Cherry, Esq. Route 7 1 IBM Plaza Midland, Michigan 48640 Chicago, Illinois 60611 Ms. Mary Sinclair Ms. Barbara Stamiris 5711 Summerset Drive 5795 N. River Midland, Michigan 48640 Freeland, Michigan 4P623  :

Frank J. Kelley, Esq. Ms. Sharon K. Warren Attorney General 636 Hillcrest State of Michigan Environmental Midland, Michigan 48640 i Protection Division 720 Law Building I' Lansing, Michigan 48913 .'

Mr. Wendell Marshall Route 10 Midland, Michigan 48640 -

Mr. Steve Gadler 2120 Carter Avenue St. Paul, Minnesota 55108 O

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l DEC 2 21980 MEETING SUMIMRY DISTRIBUTION Docket File G. Lear ,

flRC PDR V. I;oonan '

Local PDR S. Pawlicki TIC /t; SIC / Tera V. Benaroya NRR Reading Z. Rosztoczy LBii 3 Reading W. Haass H. Denton D. f*uller .-

E. Case R. Ballard '

y D. Eisenhut W. Regan c_.

P.. Purple D. Ross EE )

8. J. Ycungbiccd P. Check  :

A. Schwencer R. Satterfield e  ;

?i.  ;; l F. Miraglia 0. Parr E;qi, J.'jj J. Miller 3  !

F. Rosa 3) e=

G. Lainas W. Butler d o 'S R. Vollmer W. Kreger C co j J. P. Knight R. Ifouston ~

R. Bosnak T. Murphy F. Schauer L. Rubenstein R. E. Jackson T. Speis Project Manager D. Hood W. Johnston Attorney, OELD J. Stolz J. Lee S. Hanauer 0IE (3) W. Ccmmill ACRS (16) T. fturley R. Tedesco F. Schroeder {

D.-Skovholt M. Ernst NRC Particioants: R. Baer C. Berlinger F. Rinaldi K. Kniel J. Kane G. Knighton G. Lear A. Thadani L. Reiter D. Toneli J. Kimball J. Kramer R. Jackson D. Vassallo D. C. Gupta

. P. Collins D. Ziemann bcc: Applicant & Service List O

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The NRC staff caucused briefly after the presentations and then requested that the applicant document the presentations presented for the docket record. The staff also recommended the following to the applicant and its consultants, to be considered in the submittal to be reviewed by the staff:

1. The submittal should indicate to what degree Consumers Power intends for the staff to use the probability study (i.e., to a limited extent such as was the case for Sequoyah, or to some broader application?).

If this is intended to be used with some weight in the staff review, then considerably more emphasis will need to be placed on sensitivity studies.

2. The staff suggested that the applicant perform theoretical studies on possible ground motion amplification through the plant fill tc compare with the proposed site specific response spectra for the Diesel Generator Building.

3. The staff raised concerns that the consultants site specific response spectra for a soil site matches the Livermore rock data set for the same magnitude and distance range. Weston Geophysical noted its intent to look into this further.

4. The applicant was asked to discuss the choice of both site stations and specific earthquakes used for the real time histories with the NRC staff.

Mr. R. Jackson of the NRC staff expressed his belief that the studies presented by the applicant represent a significant step forward in resolving this matter and that the additional work suggested during this meeting is needed to conclude this open item. He further suggested that a follow-up meeting one month after receipt of the above submittal would be appropriate.

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Darl Hood, Project Manager Licensing Branch #3 Division of Licensing

Enclosures:

As stated 4

, O DEC 2 21980 Mr. Holt presented figures showing the regional seismic picture both in the Central U. S. and the Michigan area in particular. Mr. Holt stated that he feels strongly that the Midland site could easily be l characterized by a magnitude 5.0 earthquake; however for conservatism, a 5.3 magnitude will be used as suggested by the NRC staff. Mr. Holt also noted that a magnitude 5.3 earthquake is larger than any which has  :

occurred within 300 miles of the Midland site. He then introduced other Weston personnel who prasented various stages of Weston's work as discussed below.

The site specific response spectra approach was discussed in terms of recording site conditions and applicable earthquake records. Weston atterroted to match the shear velocity profile at the Midland site to accelerograph recording sites in the U. S. and Italy. Weston showed tables of collected earthquake data matching the requested magnitude and epicentral distance. Two sets of site specific data were collected, one for the Diesel Generator Building and one for seismic Category I structures founded partially upon the glacial till. Both the mean and 84th percentile real time history response spectra were shown compared to the modified Housner spectra. The staff raised the following questions and cor: erns about Weston's work:

1. Are there enough recording sites and earthquakes to developed different real time response spectra for different buildings at the Midland site?

2. Do the sites which were used in the real time collection have similar impedance contrasts to the Midland site?

3. Has Weston used all available data, and should not certain records uwJ be left out? j

4. Why does the 84th percentile for a soil site matc5 the collected Livermore rock data set at the 84th percentiles for the same magnitude and distance range? Particular interest is on the approximate resonant frequency of the upper 30 to 50 feet of {

the glacial till.

5. What response spectra are intended for seismic Category I structures and components other than the Diesel Generator Building, Containments, Auxiliary Building and Service Water Pump Structure?

Weston Geophysical also presented a probabilistic seismic hazards assess-ment (i.e. , probability study) for the Midland site. Input parameters included various earthquake source zones, upper magnitude cutoff for each zone, ground motion attenuation relationships and earthquake recurrence rates for each source zone. The results indicated that the annual probability of a Modified Mercalli within the range of 10'{ntensit to 10 MMI-VII seismic event was approximately

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