ML20096G847

Forwards Compaction Test Data for Sample 2,inadvertently Omitted from Transmitting Results of Testing for Category 1 Backfill.Permeability Test of Samples 10 & 11 Completed

ML20096G847
Person / Time
Site:	Vogtle
Issue date:	09/07/1984
From:	Foster D GEORGIA POWER CO.
To:	Adensam E Office of Nuclear Reactor Regulation
References
GN-413, NUDOCS 8409110174
Download: ML20096G847 (7)

Text

E .

Georgia Power Company' 333 Piedmont Avenue Atlanta, Georgia 30308 7 Telephone 404 526-7726 Mailing Address:

Post Offece Box 4645. .

. Atlanta, Georgia 30302 Georgia Power

. D. O. Foster .. _

the southern elecinc sys:em Vice President and General Manager l Vogtte Project September 7, 1984 6 Director of' Nuclear Reactor Regulation File: X2BA06 Attention: ,Ms. Elinor G. Adensam, Chief X2BE02

~ Licensing Branch #4 Division of Licensing. Log: GN-413 U. S.~ Nuclear Regulatory Commission

-Washington,-D.C. 20555

REFERENCE:

Letter Number GN-376 dated June 13, 1984 Letter Number GN-404 dated August 10, 1984 NRC DOCKET NUMBERS 50-424 AND 50-425 CONSTRUCTION PERMIT NUMBERS CPPR-108 AND CPFR-109

-V0GTLE ELECTRIC GENERATING PLANT - UNITS 1 AND 2 TESTING PROGRAM FOR CATEGORY I BACKFILL

Dear Mr. Denton:

In the above referenced letter number GN-404, GPC transmitted the results of the testing program for Category I backfill from both GPC and the Law Engineering Testing Company. In the law report the compaction test data sheet for sample number 2 was inadvertently omitted. This' data sheet is enclosed in this transmittal.

1 The penneability. te'st of sample numbers 10 and 11 have been completed, and the results of these tcsts are also included in this transmittal.

If there are any questions concerning the attached information or the information presented in the above referenced letters, do not hesitate to contact us.

Yours t ,

8409110174 840907N' PDR ADOCK 05000424

..A PDRf D. O. Foster DOF/ JAB /sw xc: M. A. Miller L. Fowler R. A.' Thomas W. R. Ferris J. A. Bailey M. Malcom L. T.:Gucwa~ M. A. Perovich J. E. Joiner 'Z. Yazdani k G.~.F. Trowbridge C. A. Stargler

-W. T. Nickerson H. H. Gregory, III h g W. F.-Sanders J. P. O'Reilly j k.

y Law anomaanmo vasimo comemmy gootechncat erwsunrnenud & constructon metensis conmetants BOX *T T . GEORGIA 30324 (404)873-4761 August 21, 1984 Southern Company Services, Inc.

P.O. Box 2625 Birmingham, Alabama 35202 Attention: 'Mr. J. A. Bailey

Subject:

Confirmatory Laboratory Testing Program For Category I Backfill Vogtle Electrical Generating Plant LETCo Job Number 7429

s - _ . _ _ _ .

Gentlemen:

On August 20, 1984, I received a telephone call from Mr. Zia Yazdani of Bechtel Corporation concerning our report of August 8, 1984. - Mr. Yazdani indicated that the Compaction Test Data Sheet for sample number 2 was not includes in his copy of the report.

Attached are copies of the Compaction Test Data Sheet for sampic

2. Pleases add a copy of this sheet to any other copy of the report for which it was omitted.

Very truly yours, William Allen Lancaster Civil Engineer

/ea oc: Mr. Zia Yardani k

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\ L COMPACTION TEST LAW ENGINEERING TESTING COMPANY.

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7 Law useossomasewoo vasTwoo comernwy gootechrucal erwoonrnental & constructon materals coneuttants BOX

• AT NT . GEORGIA 30324 August 31, 1984 -

Southern Company Services, Inc. .

P.O. Box 2625 Birmingham, Alabama 35202 Attention: Mr. J. A. Bailey

Subject:

Confirmatory Laboratory Testing Program For Category I Backrill Permeability Testing Vogtle Electrical Generating Plant LETCo Job Number 7429 Gentlemen:

-This report presents the results of the permeability tests which were performed on two (2) backfill materials for Plant Vogtle

. Project of Georgia Power Company.

I. INTRODUCTION:

Sample No. 10 and No. 11-were selected representing different grain size ranges, (5% to 9% passing the No. 200 sieve and 9% to 12% passing the No. 200 sieve respectively), to evaluate the coefficient of permeability by falling head method. Sample No. 10 had 5.9% passing the No. 200 sieve and sample No. 11 contained 11.0% passing the No. 200 sie ve.

4 II. PxOCEDURE:

A Modified Proctor Compaction Tsst (ASTM D1557-78, Method A) was performed on each sample to evaluate the maximum dry density of the soils, and permeability specimens then vere compacted at approximately 100,97, 94, and 91 percent of the modified proctor density. ~The samples were compacted in six layers using a moist tamping method utilizing a small- height controlled tamper.

The permeability tests were performed in general accordance with the procedure described in Appendix VII of the Laboratory Testing Manual -(EM 1110-2-1906, Permeability Tests with Back Pressure) published by the U.S. Army Corps of Engineers. The permeability tests with back pressure were performed in a pressure chamber (Triaxial Cell), and

I s .g by. increasing tne enamber pressure and back pressure at the same time, the saturation processes were completed. A pressure transducer was used to measure the "B" v alue, with the values ranging f rom 0.9 0 to 1.00. Utilizing a 2 KSF.

conrining pressure, the sample then was consolidated until primary consolidation was comple ted. The coef ficient of premeability by falling head method was' calculated -

.directly from computations using data obtained from a .

series of readings for each sample. At the end of each test, the sample was removed from the pressure chamber and tne wet weignt was obtained in order to calculate the unit weight and moisture content. Based on the final data, the actual density of each specimen was computed.

The results of mositure content, unit weights, void ratio, and permeability tests are shown on the tabulated laboratory-test sheets which are attached to this report.

III. DISCUSSION:

Results of.the permeability tests show that for sample No.

10 with 5 95 passing the No. 200 sieve, the coef ficient of permeability ranges from approximately 2.0 x 10-3 cm/sec.

to 6.0 x 10-3 cm/sec. For sample No.11 with 11.0% passing the No. 200 sieve, the coef ficient of permeability ranged rrom approximately 4.0 x 10-4 cm/sec. to 4.0 x 10-3 cm/sec.

If you have any questions concerning this report or if we can be of additional. assistance to you, please contact us.

Very truly yours, LAW ENGINEERING TESTING COMPANY Khalil Dehghanian, EIT

/

William Allen Lancaster Civil Engineer

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