ML20041D131

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Summary of 811001 Meeting W/Util & Bechtel Power Corp in Bethesda,Md Re Design & Const Aspects of Underpinning Planned Beneath Auxiliary Bldg
ML20041D131
Person / Time
Site: Midland
Issue date: 02/05/1982
From: Hood D
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
NUDOCS 8203040338
Download: ML20041D131 (19)
v • d • e


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Decket nos.: 50-329 and 50-330 Uti, OL 4

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APPLICANT: Consuaers Pwer Loopany

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SulihAkV ul-UCTOBLR 1,1981 MLLTlhL Ou RLhkIAL. hEASULLS F0a Tilt nIDLAND AUXILIARY bulLDING Un Octooer 1,19ul tue 1.KL staf f cet in bethesda, Maryland with Consumers Power Company, bechtel, and consultants, to discuss the uusign and construction aspects of trie underpinning plannec beneath the nuxiliary Building at llidland Plant, Units 1 and 2.

because the underpinning schene presented was a signi-ficant change frou the previously proposec recedial neasure, a briefing was also proviced to hhG pan 49es.ent. Enclosure 1 is a suianary of the meeting and includes a coopilation of the handouts and visual aids useu in the course of the meeting.

Darl S. Hood, Project HandSer Licensing Branch no. 4 Division of Licensing

Enclosure:

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UNITED STATES

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NUCLEAR REGULATORY COMMISSION WASHINGTON. D. C. 20555 I

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Docket Nos.: 50-329 and 50-330 OM, OL s

APPLICANT: Consumers Power Conipany FACILITY:

Midland Plant, Units 1 and 2

SUBJECT:

SUFNARY OF OCTOBER 1,1981 MEETING ON REMEDIAL MEASURES FOR THE MIDLAND AUXILIARY BUILDING Un October 1,1981 the NRC staff met in Bethesda, Maryland with Consumers Power Company, t echtel, and consultants, to discuss the design and construction aspects of tne onderpinning planned beneath the Auxiliary Building at Midland Plant, Units 1 and 2.

Because the underpinning scheme presented was a signi-ficant cnange from tne previously proposea remedial measure, a briefing was also provided tt NRC management. Enclosure 1 is a summary of the meeting and includes a compilation of the handouts and visual aids used in the course of the meeting.

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Darl S. Hood, Project Manager Licensing Branch No. 4 Division of Licensing

Enclosure:

As stated cc:

See next page l

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MIOLAND 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 James E. Brunner, Esq.

Ann Arbor, Michigan 48103 Consumers Power Company 212 West Michigan Avenue U.S. Nuclear kegulatory 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 James G. Keppler, Regional Administrator Nuclear Power Generation Division U.S. Nuclear Regulatory Commission, l

Babcock & Wilcox Region III l

7910 Woodnont Avenue, Suite 220 799 Roosevelt Road Bethesda, Maryland 20814 Glen Ellyn, Illinois 60137

f Mr. J. W. Cook cc: Commander, Naval Surface Weapons Center ATTN:

P. C. Huang White Oak Silver Spring, Maryland 20910 Mr. L. 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 Washington, D. C.

20555 Geotechnical Engineers, Inc.

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

i r To File r

From GSKeeley, P-14-113B

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CONSUMERS f

POWER Date October 27, 1981 COMPANY i

Subject MIDLAND PROJECT Internal DISCUSSION WITH STAFF ON -

Correspondence REMEDIAL FIXES FOR AUXILIARY BUILDING -

ON OCTOBER 1, 19871 FILE 0485.16 SERIAL 14705 CC JWCook, P-26-336B w/o att DBMiller, Midland w/att WRBird, P-14-418A w/att RSevo, Midland w/o att JBrunner, M-1079 w/att TRThiruvengadam, P-14-400 3 att ABoos, Bechtel 4 copies w/att RZamarin, IL&B w/o att DMBudzik/TJSullivan, P-24-624A w/att RHuston, copies w/att i

'. Introduction -

A.

Purpose - To explain the design and construction aspects of the under-pinning scheme for the Auxiliary Building including methods to be used to assure minimal effects on structures in place. The proposed schedule for preparatory work and starting of underpinning will also be discussed.

Also make staff aware of the interfacing of the various groups in-volved in performing the work.

We will have a technical report which we will pass out at end of meet-ing which will be in format requested by SRP and we will be verbally presenting today what's in the report to enable staff to ask question.

(Technical Report and drawings transmitted by JWC to Denton letter dated September 30, 1981.)

We will be talking about the design aspects, dewatering, underpinning methods, instrumentation and geo tech aspects of the work. After this, we will also discuss the QA to be applied on the job which will be under the CP Co and Bechtel QA programs. We will present a list of activities which will come under the QA program and a matrix of who is responsible for the various activities under design, procurement and construction slides used are not in tech report but will be passed out.

B.

Parties Involved -

CP Co - Setting policy, licensing, review Bechtel - design of structures i

Mueser - Rutledge - advisor on construction methods including instrumentation, review of tech spec, and geo tech advice during design i

l and construction.

Mergentime - Construction ic1081-0882a102

2 4

1 2.

Design and Construction Schedule (See attachment) 44 Permanent Wells - Complete before underpinning starts January 1,1982.

r Can't develop wells during underpinning since have to dewater. Can be used to support underpinning.

3.

-(a) Presented and explained slides. Mentioned that prestressed tendons for temporary support of wing walls during dewatering and FW Valve Pit is being supported by beams. Will analyze structure to account for underpinning activities at critical points during construction.

New structure analyzed for 50% additional seismic load. Will monitor cracks in area effected by jacking and construction.

(b) Gould discussed their exparience including that in Washington area.

Freeze wall practically eliminates problem of water in pits to im-prove working conditions and therefore gets rid of fines removal during work activities.

Use rotary drill for casing installation. Use brine for cooling.

Ethelyne Glycol has been used. Freeze wall layout may not be exactly

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as shown along admin building side.

(c) Gould discussed construction details as provided in technical report.

(d) Gould discussed instrumentation. Closing loop of relative measure-ments has temperature correction to it.

On jacking, acceptance criterion are 0.01"/1 hr to reach 90 day settlement point. This is monitored on a continuous basis. Carlson stress meters show load gain or decrease, but have at least a day to 7

arrest movement.

Monitoring - discussed what's in tech write up.

(e) Jim Gould - Discussed sample pictures of borings taken by WCC and l

that it is very uniform fill (COE 17 & 18) and some samples. Feels it's a black and white case of knowing you' re in good fill and it's a common sense decision.

It's not a sensitive material to being dis-turbed.

Applicationofloadbyjackingwillbegasicprooftest.

Consolidation tests for fill ghows 30-80 kips /f t Feels 80 is more applicable. 6 - 7 UU kips /ft (shear strength). Feels its insen-sitive plastic material. Not as firm as at SWPS but are us'ng low bearing pressure. To monitor penetrometer is only a device to help make a judgement evaluation. Will also use torvane device.

Is pleased that site is being ringgd to prevent water from going to j

fill. Load of 6.8 and 8.8 kips /ft' for elec pen and control tower.

5 to 8 factor of safety and 4 to 4.5 on elec pen and control tower.

They estimate settlement values of 0.6" with 0.4" on jacking to 0.9" with 0.6" jacking so 0.2" and 0.3" for penetration area and control tower.

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1 Showed estimate of Aux Bldg settlement versus time. Most settlement l

in 10 days (0.5) with concrete shrinkage from 10 to 90 days of (0.1).

T/G Building piers more heavily loaded and estimate 1" settlement.

Landsman wanted data that was taken every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to be reviewed instead of waiting until 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Told him we'd evaluate.

i (f) Bob Sevo presented QA program.

(See attachments) QA will be obtaining a person with underpinning experience.

BQAM controls procurement, design and construction. CP Co Topical controls MPQAD QA Activities.

EDPI has to show input from on-site geo tech to Eng and then to AA geo tech. Gilray - wants to make sure that administrative procedures show control of review by geo tech Bechtel engineering review of what consultants do.

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After this meeting with the staff, Hood asked that Keeley and Chuck

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Gould discuss with NRC management the high points of the previous.

j presentation to the staff and include the schedule of when we propose i

the various activities would commence. This presentation was made to

_ Ilood, Adensam, Tedesco, Heller, Lehr, Kane, Singh and Schauer.

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AUX BLDG REMEDI AL ACTIVITIES 1.

INTRODUCTION A)

PURPOSE OF MEETING B)

PARTIES ENVOLVED IN REMEDIAL ACTivtTIES 2.

DESIGN AND CONSTRUCTION SCHEDULE 3.

PRESENTATION OF IECHNICAL REPORT A)

STRUCTURAL CONSIDERATIONS (POST TENS 10NING AND TEMPORARY SUPPORTS)

B)

DEWATERING (EFFECTS TO DATE ON STRUCTURE) j C)

U/P METHOD D)

INSTRUMENTATION E)

GEO TECHNICAL DISCUSSION 1

F)

OUALITY PROGRAM l

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GENERAL DISCUSSION SEPTEMBER 29, 1981

i SCHEDULE FOR AUX BUILDING UNDERPINNING & SUPPORT ACTIVITIES 10/15/81 DRILL & DEVELOP ADDITIONAL 44 PERMANENT PLANT J

DEWATERING WELLS.

(MEMO TO DENTON 9/16/81) 11/ 1/81 START RECHARGE IEST (2 MONTHS DURATION) 11/ 1/81 START HOLES & INSTALLATION OF FREEZE PIPING (5 WEEKS) 12/ 1/81 MOBILIZE & START INSTALLATION OF #CCESS RAMPS OR SHAFTS 12/-7/81 START FREEZING GROUND (3 HEEKS) 1/ 1/82 START EXCAVATION '40RK, CONSTRUCT UNDERPINNING, TRANSFER LOAD, ETC, (61 NEEKS) l 1

I SEPTEMBER 29, 1981 i

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REMEDIAL SOILS WORK QUALITY PROGRAM e CPCo QUALITY ASSURANCE PROGRAM MANUAL FOR NUCLEAR POWER PLANTS

. Volume I - Policies (Topical CPC-1-A)

. Volume 11 - Procedures for Design and Construction I

e BO-TOP-1, REVISION 1 A

. Bechtel Nuclear Quality Assurance Manual

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. Instrument Calibration

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. Structurai Concrete (production, placement)

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2. 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. Vollmer 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. Tondi J. Kramer D. Vassallo P. Collins D. Ziemann F. Congel J. Stolz M. Srinivasan R. Baer bcc:

Applicant & Service List C. Berlinger E. Adensam Project Manager D. Hood Licensing Assistant M nunran R. Landsman J. Gilray J. Kane F. Rinaldi L. Heller l

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gg b IN Docket Nos.: 50-329 and 50-330 OM, OL APPLICANT: Consumers Power Corapany FACILITY:

Midland Plant, Units 1 and 2

SUBJECT:

SUbHARY OF OCTOBER 1,1981 MEETlh6 ON REMEDIAL NEASURES FOR THE MIDLAND AUXILIARY bulLDING Un October 1,1981 the NRC staf f met in Bethesda, Maryland with Consumers Power Company, Bechtel, and consultants, to discuss the design and construction aspects of the underpinning planned beneath the Auxiliary Building at Midland Plant, Units 1 and 2.

Because the underpinning scheme presented was a signi-ficant change from the previously proposed remedial measure, a briefing was also provided to NRC management. Enclosure 1 is a surmiary of the meeting and includes a compilation of the handouts and visual aids used in the course of the meeting.

Lau' \\\\ w} yl Darl S. Hood, Project Manager Licensing Branch No. 4 Division of Licensing

Enclosure:

As stated cc:

See next page

MIDLAND v

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 Williem J. Scanlon, Esq.

2034 Pauline Boulevard James d. Brunner, Esq.

Ann Arbor, Michigan 48103 Consumers Power Conpany 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)

Battella 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 l

l

Mr. J. W. Cook

  • cc: Commander, Naval Surface Weapons Center ATTN:

P. C. Huang White Oak Silver Spring, Maryland 20910 Mr. L. 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 Washington, D. C.

20555 Geotechnical Engineers, Inc.

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

hr To File i

' From GSKeeley, P-14-113B I /

7

/

CONSUMERS

~f 3

POWER Date October 27, 1981 COMPANY l

Subject MIDLAND PROJECT Internal DISCUSSION WITH STAFF ON -

Correspondence REMEDIAL FIXES FOR AUXILIARY BUILDING -

ON OCTOBER 1,19871 FILE 0485.16 SERIAL 14705 CC JWCook, P-26-336B w/o att DBMiller, Midland w/att WRBird, P-14-418A w/att RSevo, Midland w/o att JBrunner, M-1079 w/att TRThiruvengadam, P-14-400 3 att ABoos, Bechtel 4 copies w/att RZamarin, IL&B w/o att DMBudzik/TJFt.llivan, P-24-624A w/att RHuston, copies w/att i

1.

Introduction -

A.

Purpose - To explain the design and construction aspects of the under-pinning scheme for the Auxiliary Building including methods to be used to assure minimal effects on structures in place. The proposed schedule for preparatory work and starting of underpinning will also be discussed.

Also make staff aware of the interfacing of the various groups in-volved in performing the work.

i We will have a technical report which we will pass out at end of meet-ing which will be in format requested by SRP and we will be verbally presenting today what's in the report to enable staff to ask question.

(Technical Report and drawings transmitted by JWC to Denton letter dated September 30, 1981.)

We will be talking about the design aspects, dewatering, underpinning methods, instrumentation and geo tech aspects of the work. After this, we will also discuss the QA to be applied on the job which will be under the CP Co and Bechtel QA programs. We will present a list of activities which will come under the QA program and a matrix of who is responsible for the various activities under design, procurement and construction slides used are not in tech report but will be passed out.

B.

Parties Involved -

'i CP Co - Setting policy, licensing, review Bechtel - design of structures Mueser - Rutledge - advisor on construction methods including instrumentation, review of tech spec, and geo tech advice during design and construction.

Mergentime - Construction ti l

!,I ic1081-0882a102 t

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

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I 2

2.

Design and Construction Schedule (See attachment) 44 Permanent Wells - Complete before underpinning starts January 1,1982.

Can't develop wells during underpinning since have to dewater.

Can be used to support underpinning.

3.

(a) Presented and explained slides. Mentioned that prestressed tendons for temporary support of wing walls during dewatering and FW Valve Pit is being supported by beams. Will analyze structure to account for underpinning activities at critical points during construction.

New structure analyzed for 50% additional seismic load. Will monitor cracks in area effected by jacking and construction.

~

(b) Gould discussed their experience including that in Washington area.

Freeze wall practically eliminates problem of water in pits to im-prove working conditions and therefore gets rid of fines removal during work activities.

Use rotary drill for casing installation.

Use brine for cooling.

Ethelyne Glycol has been used. Freeze wall layout may not be exactly as shown along admin building side.

(c) Gould discussed construction details as provided in technical report.

(d) Gould discussed instrumentation. Closing loop of relative measure-ments has temperature correction to it.

On Jacking, acceptance criterion are 0.01"/1 hr to reach 90 day settlement point. This is monitored on a continuous basis.

Carlson stress meters show load gain or decrease, but have at least a day to f

arrest movement.

Monitoring - discussed what's in tech write up.

(e) Jim Gould - Discussed sample pictures of borings taken by WCC and that it is very uniform fill (COE 17 & 18) and some samples. Feels it's a black and white case of knowing you're in good fill and it's a common sense decision.

It's not a sensitive material to being dis-turbed. Application of load by jacking will be gasic proof test.

Consolidation tests for fill ghows 30-80 kips /ft Feels 80 is more applicable. 6 - 7 UU kips /ft (shear strength). Feels its insen-sitive plastic material. Not as firm as at SWPS but are using low bearing pressure. To monitor - penetrometer is only a device to help make a judgement evaluation. Will also use torvane device.

Is pleased that site is being ringgd to prevent water from going to fill. Load of 6.8 and 8.8 kips /ft for elec pen and control tower.

5 to 8 factor of safety and 4 to 4.5 on elec pen and control tower.

They estimate settlement values of 0.6" with 0.4" on jacking to 0.9" with 0.6" jacking so 0.2" and 0.3" for penetration area and control tower.

l l

ic1081-0882a102

3 Showed estimate of Aux Bldg settlement versus time. Most settlement in 10 days (0.5) with concrete shrinkage from 10 to 90 days of (0.1).

T/G Building piers more heavily loaded and estimate 1" settlement.

l Landsman wanted data that was taken every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to be reviewed instead of waiting until 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Told him we'd evaluate.

(f) Bob Sevo presented QA program.

(See attachments) QA will be obtaiaire a person with underpinning experience.

[

BQAM controls procurement, design and construction. CP Co Topical controls MPQAD QA Activities.

EDPI has to show input from on-site geo tech to Eng and then to AA geo tech. Gilray - wants to make sure that administrative procedures show control of review by geo tech Bechtel engineering review of what consultants do.

Af ter this meeting with the staff, Hood asked that Keeley and Chuck I

Gould discuss with NRC management the high points of the previota presentation to the staff and include the schedule of when we propose the various activities would commence. This presentation was made to Hood, Adensam, Tedesco, Heller, Lehr, Kane, Singh and Schauer.

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ic1081-0882a102

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r AUX BLDG REMEDIAL ACTIVITIES 1.

INTRODUCTION A)

PURPOSE OF MEETING B)

PARTIES ENVOLVED IN REMEDIAL ACTIVITIES 2.

DESIGN AND CONSTRUCTION SCHEDULE 3.

PRESENTATION OF IECHNICAL REPORT A)

STRUCTURAL CONSIDERATIONS (POST TENSIONING AND TEMPORARY SUPPORTS)

B)

DEWATERING (EFFECTS TO DATE ON STRUCTURE)

C)

U/P METHOD D)

INSTRUMENTATION E)

GEO TECHNICAL DISCUSSION F)

OUALITY PROGRAM 4.

GENERAL DISCUSSION SEPTEMBER 29, 1981 i

SCHEDULE FOR AUX BUILDING UNDERPINNING & SUPPORT ACTIVITIES 10/15/81 DRILL & DEVELOP ADDITIONAL 44 PERMANENT PLANT DEWATERING WELLS.

(MEMO TO DENTON 9/16/81) 11/ 1/81 START RECHARGE TEST (2 MONTHS DURATION) 11/ 1/81 START HOLES & INSTALLATION OF FREEZE PIPING (5 WEEKS) 12/ 1/81 MOBILIZE & START INSTALLATION OF SCCESS RAMPS OR SHAFTS 12/ 7/81 START FREEZING 6ROUND (3 WEEKS) 1/ 1/82 START EXCAVATION '40RK, CONSTRUCT UNDERPINNING, TRANSFER LOAD, ETc.

(61 NEEKS)

SEPTEMBER 29, 1981 l

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l REMEDIAL SOILS WORK QUALITY PROGRAM I

e CPCo QUALITY ASSURANCE PROGRAM i

MANUAL FOR NUCLEAR POWER PLANTS

. Volume 1 - Policies (Topical CPC-1-A) l

. Volume 11 - Procedures for Design and Construction e BQ-TOP-1, REVISION 1 A

. Bechtel Nuclear Quality Assurance Manual flEMED W K 9/25/81 G 1864-Ol

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l e DETECTION OF MOVEMENT OF STRUCTURES AND LOAD MEASUREMENTS Instrument Calibration Procedures l

e CONSTRUCTION PRE-DRAINAGE l

Fines Monitoring e

e EXCAVATION

. Location, Size, Sequence, Protection of Utilities REM DIAL RK 9/25/81 G-1864-16

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QUALITY RELATED ACTIVITIES (cont'd) e SUBGRADE INSPECTION e PROCUREMENT (Q list items)

. Structural Concrete and Grout 1

. Rebar/ Connectors

. Miscellaneous Steel

. Dowels

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. Structural Concrete (production, placement)

. Rebar/ Connectors

. Welding

. Miscellaneous Steel

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. Drypack

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