ML20054D280
| ML20054D280 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 03/16/1982 |
| From: | Hood D Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| ISSUANCES-OL, ISSUANCES-OM, NUDOCS 8204220520 | |
| Download: ML20054D280 (18) | |
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FAR 161982 Docket Hos: 50-329/330 OH OL APPLICANT:
Consumers Power Company FACILITY:
flidland Plant, Units 1 and 2
SUBJECT:
SUPPLEMENTAL SutalARY OF JANUARY 18-20, 1982 AUDIT AND MEETING ON PHASE !! CONSTRUCTION FOR UNDERPINk!NG THE AUXILIARY BUILDING A meeting sur,s.tary dated Marcn 10, 1982 described the January 18-19, 1982 audit by the NRC and its consultants on the plans and preparations for
" Phase II" of the construction sequence for underpinning of the Auxiliary i
Building at Midland Plant, Ur.its 1 and 2. provides the ueeting notes of Consumers Power Coupany of this audit ar.d supplements the March 10, 1982 sumary. Attachoents I and 2 from Enclosure 1 are excluded here since they correspond to Enclosures 2 through U of the flarch 10 sumary.
On January 20, 1982, the NRC net in Ann Arbor with Consumers Power Company and Dechtel to discuss plans for installation and activation of the freezewall.
This discussion is included in Enclosure I hereto, and in Enclosure 10 of the liarch 10, 1982 sumary. The freezewall is further discussed in the Applicant's letter of January 6,1982.
Darl S. Hood, Project Manager Licensing Branch flo. 4 Division of Licensing
Enclosure:
As stated cc: See next page i
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OFFICIAL RECOFiD COPY
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,.,MI DL AND Mr. J. W. Cook Vice President Consumers Power Cogany 1945 West Parnall Road Jackson, Michigan 49201 cc:
Michael I. Miller, Esq.
Mr. Don van Farrowe, Chief Ronald G. Zamarin, Esq.
Divisiont 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 Powar Company 212 West Michigan Avenue U.S. Nuclear Regul,atory Comission Jackson, Michigan 49201 Resident Inspectors Office Route 7 Ms. Mary Sinclair Midland, MicNigan 48640 5711 Summerset Drive Midland, Michigan 48640 Ms. Barbara Stamiris 5795 N. River Stewart H. Freeman Freeland, Michigan 48623 Assistant Attorney General State of Michigan Environmental Mr. Paul A. Perry, Secretary Protection Division Consumers Power Cogany 720 Law Building 212 W. Michigan Avenue Lansing, Michigan 48913 Jackson, Michigan 49201 Mr. Wendell Marshall Mr. Walt Apley Route 10 c/o Mr. Max Clausen Midland, Michigan 48640 Battelle Pacific North West Labs (PNWL)
Battelle Blvd.
Mr. Roger W. Huston SIGMA IV Building Suite 220 Richland, Washington 99352 7910 Woodmont Avenue Bethesda, Maryland 20814 Mr. I. Charak, Manager NRC Assistance Project Mr. R. B. Borsum Argonne National Laboratory Nuclear Power Generation Division 9700 South Cass Avenue Babcock & Wilcox Argonne, Illinois 60439 7910 Woodmont Avenue, Suite 220 Bethesda, Maryland 20814 James G. Keppler, Regional Administrator U.S. Nuclear Regulatory Comissi.on, Cherry & Flynn Region III Suite 3700 799 Roosevelt Road Three First National Plaza Glen Ellyn, Illinois 60137 Chicago, Illinois 60602 Mr. Steve Gadler 2120 Carter Avenue St. Paul, Minnesota 55108 m
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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 II.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
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't ENCLOSURE.1 g jg -
MEETING NOTES NO. 1541 i
MIDLAND PLANT UNITS 1 AND 2 CONSUMERS POWER COMPANY BECHTEL JOB 7220 r
i DATE:
January 18 through 20, 1982 PLACE:
Bechtel Ann Arbor Office
SUBJECT:
Nuclear Regulatory Cocsission Audit: Midland Auxiliary Building and Feedwater Isolation Valve. Pit ATTENDEES: NUCLEAR REGULATORY COMMISSION CONSUMERS POWER COMPANY D.S. Hood D.M. Budzik J.D. Kane J.
Meisenheimer I F.
Rinaldi K.B. Razdan Consultants Bechtel
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D. Bartlett - Hanson Engineers J.M. Anderson E. Burke - Mueser-Rutledge, T.
Bell
- Johnston & DeSimone T.
Broze*
G. Harstend - Harstead Engineering B.
Dhar Associates J.P. Matra - Naval Surface Weapons T.
Johnson Laboratory J.
Larson*
S.J. Poulos - Geotechnical S.C. Lo Engineering, Inc.
N.
Rawson H.N. Singh - U. S. Army Corps N.
Swanberg of Engineers G.A. Tuveson V.J. Verma
- Part-time PRINCIPAL AGREEMENTS:
1)
The meeting was held for NRC audit of the design and calcuAations for the feedwater isolation valve pit (FIVP) temporary support and turbine building underpinning.
The audit is to satisfy special licensing conditions 3 and 4 of Table A.20 of the NRC testimony 1
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1) submitted for the auxiliary building underpinning as part of the soils public hearings., Satisfaction of these conditions will permit the following.
t a.
Extending the vertical access shaft below el 609'-0" and removing soil foundation support from beneath the FIVP.
b.
Beginning drift excavation beneath the turbine building and continuing to piers E-8 and W-8.
2)
The agenda of formal presentations is included as Attachment 1.
Presentation's were made on construction sequence, FIVP temporary support, extension of access shaft to el.597, access drifts under FIVP and turbine building and turbine building underpinning, monitoring details and spring constants.
3)
The handouts for the formal presentations are included as Attachment 2.
Additional details and discussions on the presentations are provided below in items 4, 5, 6, 7 and 8.
4)
Construction Sequence Additional piers will be placed under the turbine building mat a.
along column line K '
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b.
The access shaft soldier pile installation procedure will be modified to delete use of a hollow stem auger. Details of the procedure are included as Attachment 3.
The NRC staff indicated
' concurrence with the revised procedure; therefore, the hearing board will be advised and a letter will be provided to the NRC documenting the revision.
c.
To provide construction access, piers 11, 12, 13, and 14 will be moved south to align with piers 9 and 10.
I d.
The electrical duct banks below the control tower will be isolated,from the new underpinning wall to account for relative settlement effects.
5)
FIVP s
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a.
Piping within the FIVP was connected in 1977.
i b.
Dewatering in the area was initiated in 1980.
The weight of the FIVP was transferred to the temporary supports c.
in January 1981.
i d.
The acceptance criteria for vertical movement of the FIVP is 1/2 inch based on deflection of the feedwater piping.
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When vertical movement has reached 3/8 inch, the FIVP will be e.
jacked to its original position.
f.
It must be shown that the stress levels in the piping within the FlVP are within allowable limits for all loading conditions, including past and future settlement.
g.
The crack monitoring program for the FIVP is included as
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6)
Extension of Access Shaft to El 597'-0", Access Drifts Under the FIVP and Turbine Building and Turbine Building Underpinning a.
The containment wall will be checked for loads due to the struts.
b.
The additional piers along column line K will control C
differential settlement effects on the turbine building basemat between column lines.K and K.
7)
Monitoring Details The bottom of the deep-seated bench marks will be lowered to el 425'-0".
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8)
Soil Spring Constants The method for establishing soil spring constants as discussed in Question 14 of Response to the NRC Staff Request for Additional Information Pertaining to the-Proposed Underpinning of the Auxiliary Building and Feedwater' Isolation Valve Pits (J.W. Cook Letter to H.". Denton, CPCo Serial 14869, 11/16/61) is being modified.
Calculations using the modified procedure were presented to the NRC Staff for review. The spring sets developed were for the following cases:
a.. Normal Soil Springs - Springs used to represent subgrade for analysis of structure for FSAR loading conditions.
(A subcase of this is the seismic condition in which the springs are based on the dynamic models.)
s.
b.
Existing Condition - Springs used to represent subgrade for analysis of existing state of stress in the structure.
Long Term Settlement Condition - Springs which represent the c.
behavior of the structure due to secondary consolidation of the soil after lock-off.
The sp-ings for Case 1 are based on settlement data obtained since 1977 and the load increment added during that time.
For the seismic subcase the springs are based ots the stiffness used in the seismic model.
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For the second Case (existing condition) the springs are computed at the center of each area using elastic half space theory and assuming a flexible footing.
For the long term settlement case the springs are computed from the estimated settlement after lock-off and the estimated loads. There are two subcases which were considered.
Where the underpinned areas settle more than the main auxiliary a.
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building.
b.
Where th,e main auxiliary building settles more than the
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underpinned areas.
i ACTION ITEMS:
Responsibility Action Date Due Bechtel
- 1) Provide marked up drawings showing 2/1/82 recharge procedures Bechtel 2) a.
To satisfy license condition 2a,' pro-2/1/82 vide figures showing soil conditions
'in the vicinity of the freeze wall Bechtel b.
If monitoring of Category I utilities 6/1/82 at freeze wall crossings shows signi-ficant heave', access pits shall be left open until freeze wall has been unfrozen.
If heave is minimal, back-fill of access pits may be done after freezing.
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Bechtel c.
Provide location of piezameters.
3/1/82
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To satisfy license conditions 3a, provide 2/1/82 allowable bearing capacity for material beneath the buttress access shaft.
Bechtel
- 4) To satisfy license condition 3b:
2/1/82 a.
Provide basis for 1/2-inch allowable pipe movement at the FIVP.
b.
Provide extent of fill and compac-tion requirements beneath the FIVP and measures to ensure separation of jacking slab from the containment.
Consumers 5)
Provide a letter documenting revision to 2/1/82 the soldier pile augering procedure.
Bechtel 6) a.
To satisfy license condition 3c, pro-2/1/82 vide details of the monitoring pro-cedures, Carlson stress meters, and pier telltale procedure based on ASTM standards, i
b.
Provide a matrix for the monitoring instruments showing location, fre-quency of monitoring, precision, date of installation.
Show also how rela-tive movements are calculated from these readings.
A NRC
- 7) To satisfy license condition 4a, the NRC 2/9/82 will provide any comments on the paper
" Discussion on'the Effects of Phase II Construction on the Auxiliary Building Foundation."
- 8) To satisfy license condition 4d:
Bechtel a.
Provide monitoring forms for 2/1/82 instrumentation NRC b.
The NRC will review the soil spring 2/9/82 calculations Bechtel 9)
Provide a discussion of the basis for 2/1/82 the apparent pressure diagram used to design the access shaft. (See item 13a)
Bechtel
- 10) FIVP temporary support:
2/1/82 a.
Check diagonal tension in roof slab e
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b.
Check roof slab for moment due to dead load superimposed on the moment due to hanger rod c.
Evaluate effect of cut rebars on capacity of anchors and all other
' applicable calculations during the j
temporary support and final support condition Bechtel
- 11) Containment wall:
Check containment 2/1/82 for moment due to the worst loaded strut.
Assume load dispersion at 45*.
Super-
-i impose the resulting stresses on the stresses due to prestressing.
Bechtel
- 12) Buttress access shaft for wale loads:
2/1/82 a.
Update calculation for Wall A i
using #11 @ 8" c/c which gives 1-1/2 bars per foot instead of 2 bars per foot as assumed in the calculation 1
b.
Complete calculation for wall B.
There was a note in the calculation that the moment capacity was accep-table; indicate the basis for this.
Bechtel
- 13) Retaining wall bracing:
2/1/82 a.
Justify the use of 36' as angle of friction 9 instead of 30*.
b.
Cla{ifytgeoriginofloads,i.e.,
297, 349, etc, in the calcu-lations.
Bechtel
- 14) Tank below turbine mat:
2/1/82 a.
The tank is affected by wale loads at Levels B and C.
However,'the calculations have used Levels A and B for design. Although the design is conservative, clarification of design is needed.
b.
Check the riinforcing which connects the tank to the turbine building for t
tension and shear.
In considering the j
shear wall action in each direction, 1
an effective flange may be considered to resist bending and the web may be considered to resist shear.
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Bechtel
- 15) Steel lagging:
Provide reference in h
the 2/1/82 calculation for the 50%
reduction in soil pressure for arching action
- 16) Final condition of Piers 8, 9, and 10:
Bechtel a.
Recalculate considering additional 2/1/82 piers put under turbine building columns i
Bechtel b.
Complete drawing, e.g.,
rebar for 2/1/82 bell was not called out on drawing Bechtel
- 17) Ring beam along containment:
2/1/82
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a.
Check the unbalanced load condition whkn only half side is loaded; consider each side for stability l
b '. The strut size in the calculation is 26" diameter, t = 5/8" whereas t
the drawing shows 28" t = 1/2";
update the cale:11ation to show adequacy of the strut c.
Provide details of end ties at two ends (how are they tied, etc) d.
Complete calculation for Level B Bechtel
- 18) General comment:.
2/1/82 a.
Provide a sketch in the calcula-i tions showing how the forces in the various vales and struts are balanced i
and transferred b., Provide Copies of FIVP calculations and construction. condition calcula-tions to NRC at time of February 1, 1982 audit, incorporating the above comments c.
A list of the calculations audited by the NRC is provided as Attachment 5 Prepared by:
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N, Swanberg Project Engineering NS/bjh/2/23/82 9
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ATTACHl!ENT 3 - _ -
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ACCESS SHAFT SOLDIER PILE INSTALLATION PROCEDURE
- 1..
Hole will be augered using a solid stem auger driven by a Kelly l
bar.
Cutting teeth of the auger will be 2 inches larger in radius than auger flights.
2.
bentonite slurry will be added when the hole has reached 10 feet in depth.
3.
If an' obstruction is encountered, a 30 inch easing will be installed
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to the obstruction and the obstruction will be removed by chopping.
4.
When the ho.le has reached design depth, the pile will be inserted and 4000 psi concrete will, be placed by tremie to a depth of 10' in the hole bottom.
5.
The remainder of the hole will be filled with a flyash/ cement mixture
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placed by pump tremie methods.
The use of bentonite slurry or casing will insure the stability of the hole during augering and installation. Adjacent piles will not be installed simultaneously.
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ATTACHMENT 4
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ENCLOSURE 2 TEEDWATER ISOLATION VALVE PIT
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CRACK MON 1TORING PROGPJLM f
During the underpinning operation, cracks in the feedvater isolation valve
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pit structures v4'1 be monitored by sapping at the time of the following construction milestones:
j 1.
Prior to extending the access shaft belov Elevation 609' for the purpose of taking baseline measure =ents.
2.
During the tunneling to Pier V 9 (ie, Pier N en Figure 8 of Enclosure 1.)
i 3
After co=pletion of tunneling to Pier W 9 i
k.
After cespletion of all excavation under the feedvater isolation valve pits.
5 At two-nonth =axfr.:s intervals after co=pletion of the excavation under the feedvater isolation valve pits, or at increased intervals if settle =ent becc=es significant.
5.
Prior to jacking of the per=anent underpinning.
7 After jacking of the per=anent underpinning.
8.
After any rejacking of the temporary support system.
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bttachment 5 BORATED WATER STORAGE TANK DQ-2(Q)
Support for Feedwater Isolation Valve Pit
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e 9
9 I
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AUXILIARY BUILDING UNDERPINNING DQ-47.l(Q)
Strut Loading on Containment Shell Due to Auxiliary Building Underpinning j
DQ-47.2 Check of Turbine Building Penetration for Auxiliary Building Underpinning and FWIVP Loads DQ-47.3 Underpinning Auxiliary Building Local Effects on Buttress Access Shaf t
)
DQ-47.5 Turbine Building Wall Brace for Auxiliary Building Underpinning DQ-47.6 Check of Turbine Building for Wall Lo' ads at.
Elevations.613' and 599.5' j
DQ-47.7 Steel L'agging for Underpinning and Access Shaf t Lagging to Elevation 571'-0" DQ-47.8 Piers E-8, 9, 10, W8, 9, and 10 Final Condi-tion DQ-47.9 Turbine Building Mat Check DQ-47.10(Q)
Auxiliary Building Underpinning; Revised Access Shaf t Levels C and D DQ-47.11 Auxiliary Building Underpinning Piers 8, 9, and 10
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DQ-47.12(Q)
Analysis of Ring Beam and Strut System for Underpinning Between Reactor Building and Turbine Building Walls DQ-47.13 Turbine Building Interior Pier Calculation DQ-47.14(Q)
Reactor Building Mat Check DQ-47.15(Q)
Pit Strut Design Pit 10 DQ-47.16 Turbine Building and Piers 8 and 9 Drif t Design DQ-47.17 Jacking Design and Details DQ-47.18 Check of Turbine Building Foundation Mat for Pier Loads of Underpinning
4 s,
DQ-47.19(Q)
Underpinning Auxiliary Building Access Drif t Pit 9.to Reactor Building 1
DQ-47.20 Southwest and Southeast Soldier Piles of Access Shaf t/12" x 12" 5/16" Tube Lagging at -
Southwest and Southeast Corner DQ-30.l(Q)
Auxiliary Building Spring Stiffnesses for i
Load Cases 1 and 3 (Normal and Long Term)
DQ-30.2(Q)
Auxiliary ~ Building Spring Stif fnesses for Load Case 2 (Existing Soil Springs)
S-181 Auxiliary Building Analysis, Soil Parameters Proposed Elastic Moduli E to be Used in the Auxiliary Building Analysis DQ-4J.1(Q)
Control Tower Piers Design DQ-48.2(Q)
Pier Design, Piers 15, 16, and 17 DQ-48.3 Pits W8 and E8 Temporary Beam Support DQ-48.4(Q)
Temporary Support System at Pits E5 and W5 DQ-48.6(Q)
Temporary Supports at E2 and W2 DQ-48.5(Q)
Underpinning Piers W1 and W7.
DQ-48.7(Q)
Control Tower Strut Design l
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j s.c MEETING
SUMMARY
DISTRIBUTION (s
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Docket File. c o -c z v c a, e c G. Lear NRC/PDR S. Pawlicki Local PDR V. Benaroya fi M 1 0 1932 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. 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 0IE (3)
C. Berlinger ACRS (16)
F. Schroeder R. Tedesco D. Skovholt M. Ernst K. Kniel NRC
Participants:
G. Knighton A. Thadani D. Tondi J. Kraner D. Vassallo P. Collins D. Ziemann F. Congel J. Stolz i
M. Srinivasan R. Baer bec: Applicant & Service List E. Adensam
- D. Hood Project Manager Licensing Assistant M. Duncan J. Kane F. Rinaldi R. Landsman W. Paton D