ML20040D100
| ML20040D100 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 01/15/1982 |
| From: | Adensam E Office of Nuclear Reactor Regulation |
| To: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| ISSUANCES-OL, ISSUANCES-OM, NUDOCS 8201300150 | |
| Download: ML20040D100 (5) | |
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3 DISTRIBUTION Docket File F. Rinaldi LB#4 r/f W. Paton 0;'-
DEisenhut L. Heller d -~
EAdensam G. Lear DHood L PDR RHernan NRC/PDR Doctet fios.:
50-329/330 ni, OL MDuncan TIC SHanauer NSIC RTedesco TERA RVollmer AC 5t(Mr" 4
JKramer Mr. J, W. C oo':
RMattson
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Vice / resident
_.J, /t'O RHartfield Consuaers Power Co,pany 7
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1745 tiest Parnall Ecad OIE (3)
A (nr.w g 7 Cc Jackson, 'tichiqan 49211 bcc:
J. Kane s
"a n %: f9 re R. Landsman Du r Mr. Cook:
D Su5 ject: Geotechnical Coments on B',fST Foundation Mi" Encloserl are the coments of our geotechnical consultant, 'tr.
thri Sino5, of the Corps of Enqineers based u3on his review of "Das11a Peport for the Borated Mater Storage Tank Foundations" transmitted by yaur letter of !hve15er 13,19111. These coonents were identified by telenhone with Pr. D. Cu:!zik and others of your staf f and Bechtel on January 3.1982 in order that ressanses can be provided durino the January 13, 1982 neetino. Two other questions by t'r. Sinqh on Uo%ard -
Clyde Consultants report, " Test Resnits - doratad tuter Storaqe Tanks Soil Borino and Testing Progr.r," from your November 13, 1931 cover letter were also nrovided durinq the *.elenhane discussion for inclusion in the discussions on January 13, 1032.
Si ncerel y, Elinor G. Adensam, Chief Licensing Branch Ho. 4 Division of Licensinn
Enclosure:
As stated cc:
See next paqe
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NRC FOHM 318 00-80) NRCM 004o OFFICIAL RECORD COPY usceo isai-233.*o
s 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 i
i Alan S. Farnell. Esq.
Department of Public Health '
l Isham. Lincoln & Beale P.O. Box 33035..
Suite 4200 Lansing. Michigan: 48909
- ~i 1 First National Plaza Chicago.
Illinois 60603 William J. Scanlon. Esq.
2034 Pauline Boulevard l
James E. Brunner. Esq.
Ann Arbor. Michigan 48103 o
Consumers Power Company 212 West Michigan Avenue U.S. Nuclear Regulatory Comission Jackson, Michigan 49201 Resident Inspectors Office i
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 Battelle Pacific North West Labs (PNWL)
Lansing. Michigan 48913 Battelle Blvd.
Mr. Wendell Marshall SIGMA IV Building Richland. Washington 99352 Route 10 Midland Michigan 48640 Mr. I. Charak. Manager.
NRC Assista'nce Project Mr. Roger W.. Huston Suite 220
.Argonne National Laboratory 7910 Woodmont Avenue 9700 South Cass Avenue Bethesda. ' Maryland 20814 Argonne Illinois 60439 Mr. R. B. Borsum Nuclear Power Generation Division J
Babcock & Wilcox 7910 Woodmont Avenue. Suite 220
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Bethesda, Maryland 20814
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Mr. J..W.- Cook.
h Commander, Naval' Surface Weapons Ce.nter l
cc:
ATTN:
P. C. Huang White Oak Silve'r. Spring, Maryland 20910
. Mr. L. J. Auge,. Manager Facili ty -Design, Engineering Energy Technology Engineering Cen.ter P.O. Box 1449 Canoga Park, California 91304 Mr. Neil Gehring ' *.
U.S. Corps of Engineers NCEED - T 7th Floor 477. Michigan Avenue Detroit,' Mi.chigan 48226 Charles Bechhoefer, Esq.
Atomic Safety & Licensing Board U.S. Nuclear Regulatory Commission.
Washington, D. C.
20555 Mr. Ralph S. Decker Atomic Safety 8. 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 s
Jerry Hartiour, Esq..
Atomic Safety and Licensing Board U.S. Nuclear Regulatory Commissi.on Washington, D. C.
20555..
'Geotechnical Engineers, Inc.
ATTN:
Dr. Steve JL Poulos 1017 Main Street,.
Winchester, Ma_ssachusetts 01890 e
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January 8, 1982
Subject:
Midland Project, Corps of Engineers re' view comments on Design Report for the Borated Water Storage Tank Foundations, Report Transmitted November 13, 1981 in letter from J. Cook to H. Denton.
Q.1, Sect. 3, Page 2.
Since the loads (weight of water) are applied uniformly through the flexible bottom of the tanks, and the foundations of the ring walls and valve pits are not involved in spreading the load on the ground underneath, there is no reason for. differential settlement to occur unless the underlying soil mass has vaiying engineering properties.
P. lease discuss what caused the-differential settlements.
Q.2, Sect. 3.2, Page 2.
How are'the tanks' loads. imposed on the ring beams when the static load' is directly transmitted to the ground through the. flexible tanks.' bottom.
Q.~3,
Deleted.
' Q.4, Sect. 5b, Page 3.
What do the roof loads include?
If this includesthe dead load of the roofs, why not combine with the dead load.
Q.5, Deleted.
Q.6, Deleted Q.73 Sect. 6.1, Page 4.
The settlements of the foundation soils under the tanks and' under the ring wall footings have been caused by the water load directly applied on the soil surface under the flexible tank bottom, very little water load has been trans-mitted to the soil through the ring beam footings, therefore, there is no assurance that deflection of the ring beams-bottom and the settlement underneath the footings at all points are compatible.
Provide discussion on this aspect.
Q.8, Sect. 6.1.2, Page 5.
Between elevations 635 and 629, the continuity of.the soil media has been interrupted by -the ring walls and their foundations, however..the finite element model (Figure 6) indicates continuity of the soil more than 80' from the center of the tanks in all directions.
Discuss the effects of the discontinuity on the results of the finite element ~ solutions.
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Q.9, Sect. 6.2, Page'5.
The settlements of the soil under the tanks' foundatifons are produced by the water load directly applied at the soil, therefore, more bearing areas-of ring wall footings will have practically no effect in reducing the settlements as claimed by the applicant.
Please discuss how the wider ring beam will reduce the.' settlement.
Q.10.
It is our understanding that ongoing load tests of the soil under the l
tanks' foundations is being perfonned by filling the tanks with water. Please discuss what would be the difference in loadings when the tanks are filled with borated water. Also, what additional permanent loads or semi-permanent loads other than weight of the borated water, which will contribute to the settlements, are expected to act on thtt, tanks.
If the act6al load on the tanks' four.dations during their operational period is more than the prsssure created by water during the load tests, the compressibility parameters determined bi the load tests may not predict the future settlements of the tanks accurately under the act;ual loadings.
Q.ll, Sect. 6.3.1, Page 6.
Provide justification for values of Modulus of Elasticity which have '
.been used in ' evaluation of long term settlements and shown in Figure 9. ~ What method or methods, assumptions, and tests have been used to determine the i
long term Modulus of.Ela.sticity?
Q.12, Sect. 6.4.3, Page 7.
Load combinations 1 thru 8 include permanent loads, therefore, use of the short-term model described in subsection 6.4.2 is not appropriate. The short-term model uses the values of Youngs Moduli, which are applicable to
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seismic even s or machine vibration where the magnitdde of strains are in range of 10 g% or less.
Q.13, Sect. 6.5.lb, Page 7, Table 5 does not provide summary of loads.
f Q.13a, Sect.' 8, Page 8.
The finite element analy:es are based on questionable inputs concerning soil compressibility, therefore, existence of compression under the foundation soil, under.'the dead loads, and live loads are questionable.
Therefore, there j
is no: assurance that the footings of the ringwalls'and the soil underneath i
are displacing in compatible manner.
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