ML20033D252

Fifth Interim Deficiency Rept Re Max/Min Soil Density Tests on Essential Cooling Water Pipeline Backfill Matl,Initially Reported 800620.Area w/10-inch Piping Restored After Heavy Rain Washout.Area w/30-inch Pipe Needs Rework & Retesting

ML20033D252
Person / Time
Site:	South Texas
Issue date:	11/25/1981
From:	Oprea G HOUSTON LIGHTING & POWER CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, SFN:-V-0530, SFN:-V-530, ST-HL-AE-758, NUDOCS 8112070444
Download: ML20033D252 (3)

Text

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The Light mmPuy ii""s'"" i ix"a & i" << i o ia-i7"o ii""s'"". ii >s 77""i (7's> 228-92ii November 25, 1981 ST-HL-AE-758 SFN: V-0530

['.p Mr. John T. Collins

- C Regional Administrator, Region IV T

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Nuclear Regulatory Commission

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611 Ryan Plaza Dr., Suite 1000 Arlington, TX 76012 DEC4 1981 * [

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Dear Mr. Collins:

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South Texas Project Q,

y Mlh Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 Fif th Interim Report Concerning Maximum / Minimum Soil Density Tests on ECW Backfill On June 20, 1980, ptersuant to 10CFR50.55(e), Houston Lighting & Power Company notified your office of an item concerning soil density tests on the Essential Cooling Water (ECW) pipeline backfill material.

The following information provides a status of the progress completed since our Fourth Interim Report concerning this item:

1.

As reported in the Fourth Interim Report, the backfill bedding for the South Texas Project (STP) Unit 2, 10-inch ECW System pipeline was initially requalified and accepted or. ' fay 18, 1981. However, additional bedding preparation was required it. this area due to the surface disturbance and contamination of the backfill bedding due to heavy rains.

Since the pre-paration of that report the original bedding material was excavated and replaced by new backfill and accepted on June 23, 1981.

In addition, the 10-inch pipes were laid in place and compaction of backfill between the 10-inch pipes was completed on July 10, 1981.

2.

As reported in the Fourth Interim Report, the 30-inch ECW System piping east of the STP Unit 2 Mechanical - Electrical Auxiliary Building (MEAB) was removed from the excavation and the previous backfill bedding exca-vated, replaced and was accepted on May 21, 1981. However, heavy rains, caused washouts with resulting erosion and contamination. As a result, most, if not all of the area will have to be retested following rework.

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November 25, 1981 ST-HL-AE-758 Sni: V-0530 Page 2 The next interim report concerning this item will be submitted to your office by July 30, 1982.

If you should have any questions concerning this item, please contact Mr.

Michael E. Powell at (713) 676-8592.

Very tr, g ours,

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Exe utive ce President MEP/ bit

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e Ilouston Lighting & Power Company 0

cc:

G. W. Oprea November 25, 1981 J. H. Goldberg ST-HL-AE-758 J. G. Dewcase SFN: V-0530 D. C.-Barker Page 3 C. G. Robertson H. Pyle III R. A. Frazar

• D. R. Beeth J. W. Williams J. W. Briskin J. E. Geiger D. E. Sells (NRC)

H. S. Phillipt (NRC)

J. O. Read (Read-Poland, Inc.)

M. D. Schwarz (Baker & Botts)

R. Gordon Gooch (Baker & Botts)

J. R. Newman (Lowenstein, Newman, Reis, & Axelrad)

STP RMS Director, Office of Inspection & Enforcement Nuclear Regulatory Commission Washington, D. C. 20555 R. L. Range /G. W. Muench Charles Bechhoefer, Esquire Central Power & Light Company Chairman, Atomic Safety & Licensing Board P. O. Box 2121 U. S. Nuclear Regulatory Commission Corpus Christi, Texas 78403 Washington, D. C.

20555 R. L. Hancoch fl'. Pokorny Dr. James C. Lamb, III City of Austin 313 Woodhaven Road P. O. Box 1088 Chapel Hill, North Carolina 27514 Austin, Texas 78767 J. B. Poston/A. vonRosenberg Mr. Ernest E. Hill City Public Service Board Lawrence Livermore Laboratory P. O. Box 1771

. University of California San Antonio, Texas 78296

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O. Box 808, L-46 Livermore, California 94550 Brian E. Berwick, Enquire William S. Jordan, III Assistant Attorney General Harmon & Weiss for the State of Texas 1725 I Street, N.

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P. O. Box 12548 Suite 506 Capitol Station Washinton, D. C.

20006 Austin, Texas 78711 Lanny Sinkin Citizens for Equitable Utilities, Inc..

Citizens Concerned About Nuclear Power c/o Ms. Peggy Buchorn 5106 Casa Oro Route 1,' Box 1684" San Antonio, Texas 78233 Brazoria, Texas. 77422 Jay Gutierrez, Esquire Hearing Attorney Office of the. Executive Legal Director U. S. Nuclear Regulatory Commission-Washington," D.'

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' Revision Date 10-29 u