ML20040G409

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Summary of 811002 Meeting W/Util in Bethesda,Md Re Seismic Models for Auxiliary Bldg & Svc Water Pump Structures
ML20040G409
Person / Time
Site: Midland
Issue date: 01/25/1982
From: Hood D
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
ISSUANCES-OL, ISSUANCES-OM, NUDOCS 8202120284
Download: ML20040G409 (97)
v • d • e


Text

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JAN 2 5 E

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'EECENED.

9 FEB8 19825 H

-Docket Nos.:, 50-329/J30 ui, OL V; ascumaa;u,m g Q 8mm Eurar se Tc:

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APPLICANT:

Consumers Power Company

/

ro FACILITY:

Hialand Plant, Units 1 and 2

SUBJECT:

SufGlART OF OCTOBER 2, 1981 NEETING ON SEIS!-TIC H00ELS FOR AUXILIARY BUILDING AND SERVICE WATER PUMP STRUCTURi.S On October 2,1981, the NRC staff uet in.Bethesda, Maryland with Consumers Power Coa.pany and Bechtel to discuss seismic codels for the Auxiliary fsuilding and Service Water Pump Structure at Midland Plant, Units 1 and 2.

Also present were several consultants for the HRC and applicant.

The presentations consisted of a review of inforuntion from the applicant's..

letter to the HRC dated September 30, 1981. Enclosure-1 summarizes the-r.ne ti ng.

Darl hood, Project Handger Licensing Branch #4 Division of Licensing

Enclosure:

as stated cc: See next page

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8202120284 820125 PDR ADOCK 05000329 A

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. MEETING

SUMMARY

DISTRIBUTION Docket File G. Lear NRC/PDR S. Pawlicki l

Local PDR V. Benaroya i

TIC /NSIC/ TERA Z. Rosztoczy LB #4 r/f W. Haass H. Denton D. Muller E. Case R. Ballard D. Eisenhut W. Regan R. Purple R. Mattson B. J. Youngblood P. Check A. Schwencer

0. Parr F. Miraglia

~F.

Rosa J. Miller W. Butler G. Lainas W. Kreger R. Yo11mer R. Houston J. P. Knight W. Gammill R. Bosnak L. Rubenstein F. Schauer T. Speis.

R. E. Jackson W. Johnston Attorney, OELD S. Hanauer OIE (3)

R. Hernan ACRS (16)

F. Schroeder R. Tedesco D. Skovholt M. Ernst K. Kniel NRC

Participants:

G. Knighton A. Thadani D. Hood J. Kane D. Tondi F. Rinaldi J. Kramer

  • M.

Bloom D. Vassallo P. Collins

  • A.

Hodgen

  • R.

Landsmann D. Ziemann

  • W. Paton F. Congel J. Stolz M. Srinivasan R. Baer bec: Applicant & Service List C. Berlinger E. Adensam Project Manager D. Hood Licensing Assistant M. Duncan

h jg1 UNITED STATES -

E-j g g

NUCLEAR REGULATORY COMMISSION 7,

cj WASHINGTON, D. C. 20555 g;--; /

JAN 2 b 1982

....+

Docket Nos.: 50-329/330 OM, OL APPLICANT:

Consumers Power Company J

FACILITY:

Midland Plant, Units 1 and 2

SUBJECT:

SUMMARY

OF OCTOBER 2, 1981 MEETING Oh 'EISMIC MODELS FOR AUXILIARY BUILDING AND SERVICE WATER Pun.' STRUCTURES l

On October 2,1981, the NRC staff met in Bethesda, Maryland with Consumers Power Company and Bechtel to discuss seismic models for the Auxiliary Building and Service Water Pump Structure at Midland Plant, Units 1 and 2.

Also present were-several consultants for the NRC and applicant.

The presentations consisted of a review of information from the applicant's letter to the NRC dated September 30, 1981. summarizes the meeting.

YL lY'-

Darl Hood, Pro ~ Ject Manager Licensing Branch #4 Division of Licensing

Enclosure:

.As stated cc:

See next page

a-s.

. MIDLAND 3

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

Michael I. Miller, Esq.-

Mr. Don van Farrowe, 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. Scation, Esq.

2034 Pauline Boulevard James E. Brunner, Esq.

Ann Arbor, Michigan 48103 Consumers Power Company 212 West Michigan Avenue U.S. Nuclear Regulatory Commission J ack son, -Michiga n 49201 Resident Inspectors Office Route 7 Myron M. Cherry, Esq.

Midland, Michigan 48640 1 IBM Plaza Chicago, Illinois 60611 Ms. Barbara Stamiris 5795 N. River Ms. Mary Sinclair Freeland, Michigan 48623 5711 Summerset Drive

^

Midland, Michigan 48640 Mr. Paul A. Perry, Secretary Consumers Power Company Stewart H. Freeman 212 W. Michigan Avenue-Assistant Attorney General Jackson, Michigan 49201 State of Michigan Environmental Protection Division Mr. Walt Apley

-720 Law Building c/o Mr. Max Clausen Lansing, Michigan 48913 Battelle Pacific North West Labs (PNWL)

Battelle Blvd.

Mr. Wendell Marshall SIGMA IV Building Route 10 Richland, Washington -99352 Midland, Michigan 48640 Mr. I. Charak, Manager Mr. Roger W. Huston NRC Assistance Project Suite 220 Argonne National Laboratory 7910 Woodmont Avenue 9700 South Cass Avenue Bethesda, Maryland 20814 Argonne, Illinois 60439 Mr. R. B. Borsum James G.-Keppler, Regional Administrator Nuclear Power Generation Division U.S. Nuclear Regulatory Commission, Babcock & Wilcox Region III 7910 Woodmont Avenue, Suite 220 799 Roosevelt Road Bethesda, Maryland 20814 Glen Ellyn, Illinois 60137

a

.Mr. J.. W. Cook-cc:

Commander, Naval Surface Weapons Center ATTN:

P. C. Huang White Oak Silver Spring, Maryland 20910 l

Mr. L. J. Auge, Manager i

Facility Design Engineering Energy Technology Engineering Center P.O. Box 1449 Canoga Park, California 91304 Mr. Neil Gehring U.S. Corps of Engineers NCEED - T 7th Floor 477 Michigan Avenue Detroit, Michigan 48226 Charles Bechhoefer, Esq.

Atomic Safety & Licensing Board U.S. Nuclear Regulatory Commission Washington, D. C.

20555 Mr. Ralph S. Decker Atomic Safety & Licensing Board i

U.S. Nuclear Regulatory Commission i

Washington, D. C.

20555 Dr. Frederick P. Cowan Apt. B-125 6125 N. Verde trail Boca Raton, Florida 33433 Jerry Harbour,. Esq.

Atomic Safety and Licensing Board U.S. Nuclear Regulatory Commission Washington, D. C.

20555 Geotechnical Engineers, Inc.

ATTN: Dr. Steve J. Poulos 1017 Main Street Winchester, Massachusetts 01890 t

To File 0485.16 b

4... e

/b i

Frca GSKeeley, P-14-113B J

/

CONSUMERS Date November 4, 1981 C P NY

. Subject MIDLAND PROJECT --

Internal

. DISCUSSION WITH STAFF AND PRESENTATION OF Correspondence SEISMIC MODELS FOR AUX BUILDING AND SERVICE WATER PUMP'STRUCTUPI ON OCTOBER 2, 1981 -

FILE 0485.16,.B3.7 ' SERIAL 14968 CC.

AJBoos, Bechtel JEBrunner, M-1079 MIMiller, IL&B-Chicago RWHuston, Washington (4)

'NWSwanberg, Bechtel TJSullivan/DMBudzik, P-24-517A FWilliams, IL&B-Washington TRThiruvengadam, P-14-400-JWCook, P-26-336B (w/o att)

. Attendees:

Consumers Power Company NRC Bechtel D Budzik' M Bloom

  • C McConnel B Henley A Hodgen*

B Shunmugavel G Keeley D Hood N Swanberg T Thiruvengadam J Kane R Landsmann*

W Paton*

F Rinaldi Consultants J Grundstrom, Corps of Engineers J Matra, Naval Surface Weapons Center H Singh, Corps of Engineers D Wesley, Structural Mechanics Associates F Williams, Isham,-Lincoln & Beale

  • Part time PRINCIPAL AGPIEMENTS:

Consumers Power Company and Bechtel provided a summary presentation of the seismic models for the Midland Auxiliary Building and Servi : Wa te r 'unp Structure (SWPS) which were transmitted to the NRC by J W Cook to H R Denton memo of September 30, 1981.

The viewgraphs used for this presentation are attached.

Consumers Power Company concluded by stating that the results of the new analysis are comparable'to'the original analysis presented'in the FSAR, the

-present model is more detailed than the model in the FSAR, but the basic I

criteria and techniques are the same.

Production work with the seismic models is starting.

It is Consumers' position that the present submittal complies with the Board's requirement in the prehearing conference.

The staff had the following questions regarding the presentation:

ic1181-0902a112

1.

a.

SERIAL 14968-2 Question 1:

What percentage of geometric damping was used?

Answer:

Geometric damping is cut off at 10% for horizontal and full damping is used for vertical as discussed in the FSAR and BC-TPO-4A.

-Question 2:

Is there any vibration in torsional modes for the SWPS?

Answer: The torsional mode is not significant'.

No torsional excitation is included in the model.

Question 3:

Is the SWPS underpinning wall on three sides?

Answer: Yes.

Question 4:

How is the Site Specific Response Spectra-(SSRS) being factored into the analysis?

Answer: The forces due to the SSE specified in the FSAR generated with the use of the new seismic models are multiplied by 1.5 for design of the underpinning.

The use of 1.5 times the FSAR earthquake will permit new structures to meet the SSRS. The remaining structures and equipment will be checked with the new seismic models for the FSAR earthquake.

A seismic margin review will be used for the new SSRS and has been discussed in a letter from J W Cook to H R Denton, September 25, 1981.

Question 5:

What is the frequency of the Borated. Water Storage Tank (BWST)?

Answer: This will be provided with the BWST model to be presented during the first week of November 1981.

Question 6:

Which structures will use the top of fill spectra for the SSRS?

Answer: Diesel Generator Building and Borated Water Storage Tanks.

Question 7:

What about the Diesel Fuel Oil Tanks?

Answer their response is small, and the method of analysis will be similar to buried piping.

Question 3: Will the Board rule on the seismic margin review at the soils hearings?

Answer:

It is Consumers Power's position that'the issue of seismic margin review for the new SSRS should be reviewed during the OL hearings since.the work on this item is yet to be started.

However, the issue could be raised l

during the soils hearings.

1 Question 9:

Has the applicant considered extending the hump of the FSAR earthquake to 7.1 CPS for the SWPS vertical mode?

ic1181-0902a112

.w v.

SERIAL 14968 3

' Answer:

It-is not expected'that the-vertical mode will produce ~high loEds, and most probably the effect of the hump will be picked up in the analysis considering the variation of the soil modulus.

Question 10:

Does the 1 50% apply to the soil shear modulus?

Answer: Yes.

Question 11:

Are the-soil springs and dampers based on an equivalent area of the building footprint?

Answer: For.the soil ~ springs,'an equivalent rectangle is used.

For dampers, an equivalent circle is ured.

Details are provided in the submittal.

l After a caucus with the staff, D Hood stated that the staff believes they have a favorable reaction.

The remedial actions proposed are an improvement over previous proposals. Timing on the review is a problem.

The staff's ability

)

to meet the schedule was explored, and the staff has placed Midland on a priority review basis.

Ongoing discussions are needed on calculational results of the auxiliary l

building and the concrete cracking.

Assuming that the presentations reflect the submittal, the staff agreed that j

they ha,ve enough information to complete a construction permit level reviewo F' i

S e t su n e, m od el f o v Avn. Bldg.

l l

It is difficult for the staff to conduct a review and also take part in l

hearings. The NRC recognizes that Midland has an ambitious schedule for l

hearings and the operating license safety evaluation report and that these///fCs l

review is now on the critical path for the licensing and construction of the underpinning.

t The staff has a large number of reports to review and will provide a schedule-for review on October 7, 1981.

l i

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ic1181-0902a112 c,

t DYtlAMIC MODELS 1.

INTRODUCTION A)

NEED FOR ANALYSIS B)

UNDERPINNING SCHEME 2.

METHODOLOGY (3D MODEL AND CRITERIA) 3.

MODEL DESCRIPTION 4.

30ll STRUCTURE INTERACTION 5.

CONCLUSIONS SEPTEMBER 29, 1981

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. SOIL PROPERTIES i

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. SOIL / STRUCTURE INTERACTION e RESULTS.

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I AUXILIARY BUILDING SEISMIC ANALYSIS 1

FOUNDATION SOIL PROPERTIES i

Railroad Natural Bay Area e Nominal Dynamic Shear 7,746 2,165 Modulus (ksf) l e Poisson Ratio 0.42 0.4 e Unit Weight (pcf) 135 120 P I CIV StP41 ford 9/28/8I a.1867-05 b

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l AUXILIARY BUILDING l

SEISMIC ANALYSIS l

DYNAMIC MODEL l

e THREE-DIMENSIONAL LUMPED MASS STICK MODEL i

. Masses Located at Floor Elevation

  • Beam Elements l
  • Plate Elements i

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. Rigid Beam Elements i

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AUXILIARY BUILDING SCHEMATIC PLAN (With Conceptual Seismic Model) 8 8

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SEISMIC ANALYSIS SOILISTRUCTURE INTERACTION t

I e ELASTIC HALF-SPACE IMPEDANCE l

FUNCTIONS (BC-TOP-4, Rev 3)

. Equivalent Foundation Soil Properties

  • Equivalent Foundation Area i

j e SOIL MATERIAL DAMPING (3% of critical) l l

e EMBEDMENT INFLUENCE (Appendix A) i e DISTRIBUTION OF GLOBAL SPRINGS RCPD SEN Allo 4 9/28/81 G180706 l

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AUXILIARY BUILDING EQUIVALENT SOIL PROPERTIES

  • ROCKING N En + Ip Ep j
  • Erduw " !

ITOTAL

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. Ip -

Moment of inertia of Foundation Surface in Contact with Fill Material

  • En -

Nominal Dynamic Elastic Modulus of in Situ Material e Ep -

Nominal Dynamic Elastic Modulus of Fill Material o,,,,,os U

AUXILIARY BUILDING EQUIVALENT SOIL PROPERTIES

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)

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Area of Foundation Surface in Contact with Fill Material

. En -

Dynamic Elastic Modulus of in Situ

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. Ep -

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t' AUXILIARY BUILDING SEISMIC ANALYSIS EQUIVALENT FOUNDATION AREA

~

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SEISMIC ANALYSIS i

EMBEDMENT INFLUENCE j

(Appendix A of Report)

J i

e BASIC EQUATION K'ii = K

[1 + (c< ii - 1) GG'f]

ii i

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K'ii Elastic Half-Space Spring Adjusted for the influence of

=

Embedment Kii Elastic Half-Space Spring

=

x ii Influence of Full Side Contact

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G Shear Modulus of Soil Along Building Sides

=

j G

Shear Modulus of Foundation Soil

=

2 f_

f Adjustment for Partial Side Contact

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AUXILIARY BUILDING DISTRIBUTION OF SOIL SPRINGS t

G

//////

ELASTIC HALF-SPACE SPRINGS ELECTRICAL h

h-PENETRATION 3

f FOUNDATION

//////

///// /

//////

i DISTRIBUTED SPRINGS s

l MIDt Af4018 tiffs 1 AND 2 Nf1CIHLSI NTATN#4 9/78/81 O'IOUI 00 w

AUXILIARY BUILDING SEISMIC ANALYSIS

~

RESULTS I

e STRUCTURAL BEHAVIOR

= Primary Frequencies

. Primary Mode Shapes MIOLAf40 0teliS f At4D 2 NilC IPE Si f4T ATIOta 9/2fV8 8

AUXILIARY BUILDING RESULTS

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Mot AND titafTS 1 AND 2 HnCl'nt St.NI AllON 9/28/8 g G-t86T-Il

AUXILIARY BUILDING

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PRIMARY MODE SHAPE FOR NORTH-SOUTH klOTION MitM ANO UNITS 1 AND 2 NitCl'fILStNi AItON 11/28/8i G186712

e AUXILIARY BUILDING RESULTS r

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~

ANALYSIS OF AUXILIARY BUILDING AND SERVICE WATER PUMP STRUCTURE RESPONSE SPECTRUM METHOD l

l TIT _LE PURPOSES l

BECHTEL STRUCTURAL SOLVES EIGENVALUE ANALYSIS PROGRAM PROBLEM AND CALCULATES (BSAP - CE 800)

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~

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PROPOSED REVISION TO FSAR APPENDIX 3C COMPUTER PROGRAMS USED IN SEISMIC

~

j ANALYSIS OF AUXILIARY BUILDING AND SERVICE WATER PUMP STRUCTURE TIME HISTORY ANALYSIS l

l TIT _LE PURPOSES l

~ BECHTEL STRUCTURAL

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EL 587' UNDERPINNING WAI.L CONSUMERS POWER COMPANY MIDLAND PLANT UNITS 1 AND 2 SERVICE WATER PUMP STRUCTURE SCHEMATIC VIEW FIGURE 1 S'iT7[u

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SERVICE WATER PUMP STRUCTURE

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(

UZlTED STATES

/

. NtJCLEAR REGULATORY COMMISSION g

g WASHINGTON, D. C. 20555

  • %,...../'

JAN 2 b 198I Docket Nos.: 50-329/330 OM, OL

/

APPLICANT:

Consumers Power Company FACILITY:

Midland Plant, Units 1 and 2

SUBJECT:

SUMMARY

OF OCTOBER 2,1981 MEETING ON. SEISMIC MODELS FOR AUXILIARY BUILDING AND SERVICE WATER PUMP. STRUCTURES On October 2,1981, the NRC staff met in Bethesda, Maryland with Consumers Power Company and Bechtel to discuss seismic models for the Auxiliary Building and Service Water Pump Structure at Midland Plant, Units'l and 2.

Also present were several consultants for the NRC and applicant.

The presentations consisted of a review of information from the applicant's letter to the=NRC dated September 30, 1981. Enclosure 1 summarizes the

teeting.

ya //m Darl Hood, Ject Manager Licensing Branch #4 Division of Licensing

Enclosure:

As stated cc:

See next page

MIDLAND Mr. J. W. Cook Vice President Consumers Power Company 1945 West Parnall Road Jackson, Michigan 49201 cc: Michael I. Miller, Esq.

Mr. Don van Farrowe, 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.

2034 Pauline Boulevard Janes E. Brunner, Esq.

Ann Arbor, Michigan 48103 Consumers Power Company 212 West Michigan Avenue U.S. Nuclear Regulatory Commission Jackson, Michigan 49201 Resident Inspectors Office Route 7 Myron M. Cherry, Esq.

Midland, Michigan 48640 1 IBM Plaza Chicago, Illinois 60611 Ms. Barbara Stamiris 5795 N. River Ms. Mary Sinclair Freeland, Michigan 48623 5711 Summerset Drive Midland, Michigan 48640 Mr. Paul A. Perry, Secretary Consumers Power Company Stewart H. Freeman 212 W. Michigan Avenue Assistant Attorney General Jackson, Michigan 49201 State of Michigan Environmental Protection Division Mr. Walt Apley 720 Law Building c/o Mr. Max Clausen Lansing, Michigan 48913 Battelle Pacific North West Labs (PNWL)

Battelle Blvd.

Mr. Wendell Marshall SIGMA IV Building Route 10 Richland, Washington 99352 Midland, Michigan 48640 Mr. I. Charak, Manager Mr. Roger W. Huston NRC Assistance Project Suite 220 Argonne National Laboratory 7910 Woodmont Avenue 9700 South Cass Avenue Bethesda, Maryland 20814 Argonne, Illinois 60439 Mr. R. B. Borsum Janes G. Keppler, Regional Administrator Nuclear Power Generation Division U.S. Nuclear Regulatory Commission, Babcock & Wilcox Region III 7910 Woodmont Avenue, Suite 220 799 Roosevelt Road Bethesda, Maryland 20814 Glen Ellyn, Illinois 60137

c Mr. J. W. Cook cc:

Commander, Naval Surface Weapons Center ATTN:

P. C. Huang White Oak Silver Spring, Maryland 20910 Mr. t. J. Auge, Manager Facility Design Engineering Energy Technology Engineering Center P.O. Box 1449 Canoga Park, California 91304 Mr. Neil Gehring U.S. Corps of Engineers NCEED - T 7th Floor 477 Michigan Avenue Detroit, Michigan 48226 Charles Bechhoefer, Esq.

Atomic Safety & Licensing Board U.S. Nuclear Regulatory Commission Washington, D. C.

20555 Mr. Ralph S. Decker Atomic Safety & Licensing Board U.S. Nuclear Regulatory Commission Washington, D. C.

20555 Dr. Frederick P. Cowan Apt. B-125 6125 N. Verde Trail Boca Raton, Florida 33433 Jerry Harbour, Esq.

Atomic Safety and Licensing Board U.S. Nuclear Regulatory Commission Washiraton, D. C.

20555 Geotechnical Engineers, Inc.

ATTN: Dr. Steve J. Poulos 1017 Main Street Winchester, Massachusetts 01890

P a

To Filo 0485.16 I

fl%

0 s

From GSK;al y, P-14-113B j

g

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CONSUMERS 1

Date November 4, 1981 MP,tW Subject MIDLAND PROJECT -

Internal DISCUSSION WITH STAFF AND PRESENTATION OF Correspondence SEISMIC MODELS FOR AUX BUILDING AND SERVICE WATER PUMP STRUCTURE ON OCTOBER 2, 1981 -

FILE 0485.16, B3.7 SERIAL 14.58 CC AJBoos, Bechtel JEBrunner, M-1079 MIMiller, IL&B-Chicago RWHuston, Washington (4)

NWSwanberg, Bechtel TJSullivan/DMBudzik, P-24-517A FWilliams, IL&B-Washington TRThiruvengadam, P-14-400 JWCook, P-26-336B (w/o att)

Attendees:

Consumers Power Company NRC Bechtel D Budzik M Bloom

  • C McConnel B Henley A Hodgen*

P Thunmugavel G Keeley D Hood N Swanberg T Thiruvengadam J Kane R Landsmann*

W Paton*

F Rinaldi Consultants J Grundstrom, Corps of Engineers J Matra, Naval Surface Weapons Center H Singh, Corps of Engineers D Wesley, Structural Mechanics Associates F Williams, Isham, Lincoln & Beale

  • Part time PRINCIPAL AGREEMENTS:

Consumers Power Company and Bechtel provided a summary presentation of the seismic models for the Midland Auxiliary Building and Servi Water ~%mp Structure (SWPS) which were transmitted to the NRC by J W Cook to H R Denton memo of September 30, 1981.

The viewgraphs used for this presentation are attached.

Consumers Power Company concluded by stating that the results of the new analysis are comparable to the original analysis presented in the FSAR, the present model is more detailed than the model in the FSAR, but the basic criteria and techniques are the same.

Production work with the seismic models is starting.

It is Consumers' position that the present submittal complies with the Board's requirement in the prehearing conference.

The staf f had the following questions regarding the presentation:

ic1181-0902a112

Question 1: What percentage of geometric damping was used?

Answer: Geometric damping is cut off at 10% for horizontal and full damping

-in used for vertical as discussed in the FSAR and BC-TPO-4A.

Question 2:

Is there any vibration in torsional modes for the SWPS?

Answer: The torsional mode is not significant*.

No torsional excitation is included in the model.

Question 3:

Is the SWPS underpinning wall on three sides?

Answer: Yes.

Question 4:

How is the Site Specific Response Spectra (SSRS) being factored into the analysis?

Answer: The forces due to the SSE specified in the FSAR generated with the use of the new seismic n?odels are multiplied by 1.5 for design of the underpinning. The use of 1.5 times the FSAR earthquake will permit ne9 structures to meet the,SSRS. The remaining structures and equipment will be checked with the new seismicimodels for the FSAR earthquake.

A seismic margin review will be used for the new SSRS and has been discussed in a letter from J W Cook to H R Denton, September 25, 1981.

Question 5: What is the frequency of the Borated Water Storage Tank (BWST)?

Answer: This will be provided with the BWST model to be presented during the first week'of Novetber 1981.

Question 6: Which structures will use the top of fill spectra for the SSRS?

Answer: Diesel Generator Building and Borated Water Storage Tanks.

Question 7: What about the Diesel Fuel Oil Tanks?

Answer their response is small, and the method of analysis will be similar to buried piping.

quentinn d: Will the Board rule on the seismic margin review at the soils hearings?

Answer:

It is Consumers Power's position that the issue of seismic margin review for the new SSRS should be reviewed during the OL hearings since the work on this item is yet to be started. However, the issue could be raised during the soils hearings.

Question 9: Has the applicant considered extending the hump of the FSAR earthquake to 7.1 CPS for the SWPS vertical mode?

ic1181-0902a112 g

SERIAL 14968 3

o Answer:

It is not expected that the vertical mode will produce high loads, and most probably the effect of the hump will be picked up in the analysis considering the variation of the soil modulus.

Question 10:

Does the 1 50% apply to the soil shear modulus?

Answer: Yes.

Question 11: Are the soil springs and dampers based on an equivalent area of the building footprint?

Answer: For the soil springs, an equivalent rectangle is used.

For dampers, an equivalent circle is used. Details are provided in the submittal.

After a caucus with the staff, D Hood stated that the staff believes they have a favorable reaction. The remedial actions proposed are an improvement over previous proposals. Timing on the review is a problem. The staff's ability to meet the schedule was explored, and the staff has placed Midland on a priority review basis.

Ongoing discussions are needed on calculational results of the auxiliary building and the concrete cracking.

Assuming that the presentations reflect the submittal, the staff agreed that they have enough information to complete a construction permit level reviewof S c s s o, e*c.,

en cdel f o v Avn.13!dg.

It is difficult for the staff to conduct a review and also take part in hearings. The NRC recognizes that Midland has an ambitious schedule for hearings and the operating license safety evaluation report and that theke/V1Cs review is now on the critical path for the licensing and construction of the underpinning.

The staff has a large number of reports to review and will provide a schedule for review on October 7, 1981.

icl181-0902all2

wa DYNAMIC MODELS 1.

INTRODUCTION A)

NEED FOR ANALYSIS

.B)

(!NDERPINNING SCHEME 2.

METHODOLOGY (3D MODEL AND CRITERIA) 3.

MODEL DESCRIPTION 4.

SOIL STRUCTURE INTERACTION 5.

CONCLUSIONS 1

l SEPTEMBER 29, 1981

3 9

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AUXILIARY BUILDING SEISMIC ANALYSIS FOUNDATION SOIL PROPERTIES Railroad Natural Bay Area 1

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~

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x AUXILIARY

/

-o f

BUILDING j

A ELECTRICAL

/

/

I d)

PENETRATION 7

f J_

~

/

('

/

AREA (fl'.-/'lw

-o

/

/

9 7

l (ROTATIONAL SPRINGS NOT y

SHOWN FOR CLARITY) 4 o CONSUMERS POWER COMPANY J"<

gh{

MIDLAND PLANT UNITS 1 AND 2 UNDERPINNING 11 ROUGH 3-D MODEL FIGURE 4 E 07" ' *

c. isn in W

AUXILIARY BUILDING SEISMIC ANALYSIS SOILISTRUCTURE INTERACTION e ELASTIC HALF-SPACE IMPEDANCE FUNCTIONS (BC-TOP-4, Rev 3)

. Equivalent Foundation Soil Properties l

. Equivalent Foundation Area e SOIL MATERIAL DAMPING (3% of critical) o EMBEDMENT INFLUENCE (Appendix A) i e DISTRIBUTION OF GLOBAL SPRINGS n Tm TON 9/2R/81 G-186 7-06 i

4 I

[

l AUXILIARY BUILDING EQUIVALENT SOIL PROPERTIES t

e ROCKING l

N En t lp Ep l

  • Enouiv = I l

l

!TOTAL e in -

Moments of inertia of Foundation Surface in Contact with in Situ Material e lp -

Moment of inertia of Foundation Surface in Contact with Fill Material e E Nominal Dynamic Elastic Modulus of in u

Situ Material

. Ep -

Nominal Dynamic Elastic Modulus of Fill Material h80t A*80 tNTS t ANO 2 0 tSte vos

i AUXILIAHY BUILL> LNG l

i EQUIVALENT SOIL PROPERTIES l

(cont'd)

~

l l

e TRANSLATION (horizontal) l

  • EEouiv =

N En + Ap Ep l

A7074t

~

i

. An - Area of Foundation Surface in Contact with in Situ Material l

. Ap -

Area of Foundation Surface in Contact with Fill Material

. En -

Dynamic Elastic Modulus of in Situ Material

. Ep -

Dynamic Elastic Modulus of Fill Material MfDtAND tJMTS 1 AND 2 G-1529-106

AUXILIARY BUILDING SEISMIC ANALYSIS EQUIVALENT FOUNDATION AREA e RECTANGLE bh3 A = bh I

=

12 Since A and I are known h = /12iS%

1

(

A

/

b=

A h

  • EQUIVALENT RECTANGLE IS h x b r,fasisVL"at"Lo, c... ee,.,

AUXILIARY BUILDING SEISMIC ANALYSIS 4

I EMBEDMENT INFLUENCE l

(Appendix A of Report) e BASIC EQUATION K'ii = K

[1 + (c< ii - 1) GG'f]

ii l

K'ii Elastic Half-Space Spring Adjusted for the influence of

=

Embedment Kii Elastic Half-Space Spring

=

i l

x si Influence of Full Side Contact

=

l G

Shear Modulus of Soil Along Building Sides

=

j G

Shear Modulus of Foundation Soit

=

2 f

Adjustment for Partial Side Contact

=

n70nTEA'r'21oII"m*28/81 0 1867-09 l

l

~

l

\\

I I

AUXILIARY BUILDING DISTRIBUTION OF SOIL SPRINGS G,

4

//////

ELASTIC HALF-SPACE SPRINGS I

ELECTRICAL h

h~ PENETRATION h

FOUNDATION l

//////

/// // /

//////

DISTRIBUTED SPRINGS s

i NOC S NTAT 9/28/81 8

4

AUXILIARY BUILDING SEISMIC ANALYSIS RESULTS e STRUCTURAL BEHAVIOR

. Primary Frequencies

  • Primary Mode Shapes l

1 I

I, b[ b!

AUXILIARY BUILDING i

RESULTS i

t I

r u

l L

I

-- r --- r --- r - _ -_ _ _ _ \\

P

-- r J

_ _}

-,.;_7,-.__ ____ _ _ _ _ l

,,g!, - - - _ _ _

-r----

r -

-F - --F--

--+-{

r

.4

-F-- -_p__

. _ j. l_ _ _

l, -- '-t-- -- F-

~

is

' + - - _--4__ __[.

,g --- - I- - -

_4-

,1- - - - - i- - _.

j- _ _ __ _._ _ _ _ _

j

,5

-i--- '-f--

._ p,l--

_t

___L__ _j- -_____

[~- -- -- - - - - _ _p _.

e

~~---'-

l

---'---L.

-- - - - - - - - - - - ~ _. _ _ _.

- - - - - - - - - - ~ _ _ _ _. _ _ _ _ _,

2 FREQUENCY = 2.8 PRIMARY MODE SHAPE FOR EAST-WEST MOTION PARTICIPATION FACTOR = 77 Y

MTX AND (fNfiS 1 AND 2 G1867 li NnC Pf1f:SENT ATION 9/28/81 e

l

)

2 1

7 68 1

G 2

,,'l l

1_

G N

l,l.

_ {.Tj q '

l

\\_

R I

O I

D i

i!

LS 1

F EN UT PO I

AIT B L H O S

M U

E DH Y

~

~

OT

,l1, RS U

~

M O

~

AE

,g'y YS

}-

~

= 1_.

~

A T R

I

~

H LR

- gh -

~

MR I

_Jn a

ln

~

X IRO f

t

(

l~

\\@

k y

,U PN t

jt U

1 M\\

\\\\

A m

9 2

= N 8 O7 1

8 Y

I

/8 T

C A=

/

2 2 N

D 9 P

N E

R A N I

U C O O

1 l m

I l

m QTT SA TT E RC NN I

R AA UES F PF DE NF I

A F' LOIC I

F MN 9

I 1-

AUXILIARY BUILDING RESULTS i

r 1

I i-r_____

1

--d

--I'

,.g. __q i

i, i

I,

~ ~~

-_.-___.________l i

___1 _'

-- -_a 7 ---+ -- - ___________

z J-

_ y r

-__--__.-____________I L

FREQUENCY = 4.2

"-----~-~~-~~~---4 i

PARTICIPATION j

- ~ ~ - -- - - -

T *

~

FACTOR = 78 Z

l PRIMARY MODE SHAPE FOR X

VERTICAL MOT!ON MIDt AND llNITS 1 AND 2 G-1 Bf 7 13 NRC PRESENTATION 9/28/81 4

~

AUXILIARY BUILDING RESULTS I

l e BUILDING FORCES

. Based on Nominal Soil Properties, with 1

Variation of 50 %

e IN-STRUCTURE SPECTRA

. ' Based on Nominal Soil Properties

. Broadening At least 15% in accordance with' Regulatory Guide 1.122 Yn"Et"?s?%'d"% 2a:o, a,esr.n w

7 l

/-

,~

4r

= :.

PROPOSED-REVISION TO FSAR APPENDIX 3C COMPUTER PROGRAMS USED IN SEISMIC ANALYSIS OF AUXILIARY BUILDING AND SERVICE WATER PUMP STRUCTURE RESPONSE SPECTRUM METHOD TITLE PURPOSES BECHTEL STRUCTURAL

, SOLVES ElGENVALUE 7

ANALYSIS PROGRAM PROBLEM AND CALCULATES c

(BSAP - CE 800)

STRUCTURAL MODAL

-DAMPlNG FOR'" FIXED" BASE STRUCTURE RESPONSih SPECiR'UM ~

ANALYSIS BY IWODAL r "DERPOSITION BECIITEL STRUCTURAL C...WPUTES COMPOSITE ANALYSIS PROGRAM MODAL DAMPlNG F,OR r

(BSAP-DYNAM CE207)>

. LUMPED PARAMETER SOIL-

~

-5, E-STRUCTURE INTERACTION

~

~

'~

PROBLEM N

S NTAllON /28/81 G 1867-02 O

t PROPOSED REVISION TO FSAR APPENDIX 3C COMPUTER PROGRAMS USED IN SEISMIC ANALYSIS OF AUXILIARY BUILDING AND SERVICE WATER PUMP STRUCTURE TIME HISTORY ANALYSIS TITLE PURPOSES BECHTEL STRUCTURAL SOLVES EIGENVALUE ANALYSIS PROGRAM PROBLEM AND CALCULATES (BSAP CE800)

STRUCTURAL MODAL DAMPING FOR " FIXED" BASE STRUCTURE TIME HISTORY ANALYSIS BY MODAL SUPERPOS! TION BECHTEL STRUCTURAL COMPUTES COMPOSITE ANALYSIS PROGRAM MODAL DAMPlNG (BSAP-DYNAM CE 207)

FOR LUMPED PARAMETER SOIL-STRUCTURE INTERACTION PROBLEM SPECTRA (CE 802)

COMPUTES RESPONSE SPECTRA f,IEf#s%N ' u"Me,ei J

o-iaer m

'N

\\

i SERVICE WATER PUMP STRUCTURE SEISMIC ANALYSIS I

e STRUCTURAL GEOMETRY e SOIL PROPERTIES e DYNAMIC MODEL

)

i e SOILISTRUCTURE INTERACTION l

l i

e RESULTS f CPR TEPJTAllO 4 9/28/81 G-186 7-14 I

'I SERVICE WATER PUMP STRUCTURE 4 _ __ _ _

g 106'

,\\86' a

\\aL

.i EL 656' I

l 69' EL 634'

,,, n

_v_

\\

m a a-_ u _ '

EL 587' UNDERPINNING WALL CONSUMERS POWER COMPANY MIDLAND PLANT UNITS 1 AND 2 SERVICE WATER PUMP STRUCTURE SCHEMATIC VIEW FIGGRE 1

$7s"m /s.

SERVICE WATER PUMP STRUCTURE PLAN AT EL 634'-6" N

I ;_,_,_1 p l_lbW I i

j i

i i'

i STRAINERS

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c[,

- (j I

g

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l PUMPS j

ap-1 J_

j (a)

~

l BLDG (0,0) i Id5 CONSUMERS POWER COMPANY MIDLAND PLANT UNITS 1 AND 2 SERVICE WATER PUMP STRUCTURE PLAN FIGURE 2 fo'[EIO.,

SERVICE WATER PUMP STRUCTURE i

SEISM!C ANALYSIS FOUNDATION SOIL PROPERTIES i

I l

Natural l

i e Nominal Dynamic Shear 7,746 Modulus (ksf) 1 i

e Poisson Ratio 0.42 i

a Unit Weight (pcf) 135

]

MintAND UNITS 1 AND 2 I

NRCIPESENTATON 9/28/81 d-186 7-15 i

SERVICE WATER PUMP STRUCTURE SEISMIC ANALYSIS DYNAMIC MODEL e THREE-DIMENSIONAL LUMPED MASS MODEL I

. Mass Located at Floor Elevations

. Beam Elements

. Rigid Beam Elements

)

NC E TATON 9/28/81 G-186716 1

i e

SERVICE WATER PUMP STRUCTURE SECTION A i'I_lH~~ _P -

  • -]ZT_Z__

__...__y M

"" EL 634'-0" El 634*-G" 7~-'j i

t m ] yr

.17_

, EL 620'-0" W.

mUNDERPINNING s_

WALL j

3 SIDES J

BACKFILL\\

~

L

- EL 592'-0"

/:

' '. ' P E

[* __

BOTTOM EL S87'-0"-

SECTION a.m in IN SITU TILL CONSUMERS POWER COMPANY MIDLAND PLANT UNITS 1 AND 2 SERVICE WATER PUMP STRUCTURE NORTH-SOUTH SECTION FIGURE 3 n im o.

e W

SERVICE WATER PUMP STRUCTURE SECTION B EL 656'-0"

^

J.

e p

EL 634'-6" EL 634'-0"

^

,..p.>' q., -

, g,g W.lR ii O

E

]

O

, EL 620

, EL 605 I

I i

I

. EL 592'-0"

l. - '.

j.ggw.,

'WkN.glh.'h~N SECTION B CDNSUMERS POWER COMPANY MIDLAND PLANT UNITS 1 AND 2 SERVICE WATER PUMP STURCTURE EAST-WEST VIEW FIGURE 4 G tRM in 1

LEGEND Node locations e

e Mass for all 3 degrees of 2 1 o

s freedom 3

o a

Mass for two horizontal

/

degrees of freedom A

Mass for vertical degree of freedom N

Base location. Damper I

}Hrotational springs so 3

,p.6,,,,5 1

not shown for clarity

@/

~

7 h89

,E NOTES:

1p,13

, 10

1. The mass of the water is

'A /j lumped at mass points 7, 12 b

11, and 15 horizontally p

and at mass point 16 vertically.

"14

2. The mass of the fill entrapped within the underpinning walls is lumped at mass points 7, 11, and 15 for the two horizontal j o 15, y

Y'gf degrees of freedom only.

x 17 Z

CONSUMERS POWER COMPANY

@@*.b MIDLAND PLANT UNITS 1 AND 2 SERVICE WATER PUMP STRUCTURE NODE LAYOUT FIGURE 5 Si.su.

e

5 I

i SERVICE WATER PUMP STRUCTURE SEISMIC ANALYSIS i

SOILESTRUCTURE INTERACTION

  • ELASTIC HALF-SPACE IMPEDANCE FUNCTIONS (BC-TOP-4, Rev 3) i

. Equivalent Foundation Area l

e SOIL MATERIAL DAMPING (3% of critical) e EMBEDMENT INFLUENCE (Appendix A) l MOLAND UNITS 1 AND 2 l

Nnc enESENTATION 9/28/81 G-1867 24 l

O

-.y.__

i SERVICE WATER PUMP STRUCTURE RESULTS l

I e STRUCTURE BEHAVIOR i

. Primary Frequency i

1

. Primary Modes Shapes i

(

Uric'$r"esSUr'ItE9?N81 G-186 7-17 l

4 SERVICE WATER PUMP STRUCTURE RESULTS i

l l

i l

l l

l i

I' FREQUENCY = 4.8 l

PARTICIPATION l

FACTOR = 36

-j Y

l l

l z

i

_j _

l l

l l

_x PRIMARY MODE SHAPE FOR EAST-WEST MOTION MIDt AND UNiiS 1 AND 2 G-1867-18 NHC F'RESENTAtlON 9/28/81

SERVICE WATER PUMP STRUCTURE RESULTS l'

l l

l l

FREQUENCY = 4.9 r--

PARTICIPATION FACTOR = 37 I

l I

L__

i j

Y l

1 l

.i--

x l

l l

l

____-----l PRIMARY MODE SHAPE FOR NORTH-SOUTH MOTION MIDLAND UNITS 1 AND 2 HnC Pl1ESENTATION 9/28/81 G-186719 J

e

SERVICE WATER PUMP STRUCTURE RESULTS 1

l l

i 1

l

~ ~ '

FREQUENCY = 7.1 l

PARTICIPATION l

FACTOR = 35 l

t i

t.

l Y

I I

l J,

l x

__i____,

1 I

l l

l

[

l l

l l

PRIMARY MODE SHAPE FOR MMAND UNUS 1 AND 2 VERTICAL MOTION e

c iser.2o NaC FPET,ENTAilON 9/28/8:

)

I SERVICE WATER PUMP STRUCTURE RESULTS e BUILDING FORCES

. Based on Nominal Soil Properties, with Variation of 50 %

e IN-STRUCTURE SPECTRA Based on Nominal Soil Properties e

Broadening At least 15% in accordance with Regulatory Guide 1.122 "E^Es's'S'o^u"%'s,a, o,8er-2,

)

--

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