ML19340E990

Interim Deficiency Rept Re Tensile Strengths of 1-inch kwik-bolt Expansion Anchors.Revised Load Capacity Values Are Reflected in Revised Technical Ref Document.Next Rept to Be Submitted by 810320

ML19340E990
Person / Time
Site:	South Texas
Issue date:	01/09/1981
From:	Oprea G HOUSTON LIGHTING & POWER CO.
To:	Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, ST-HL-AE-596, NUDOCS 8101160460
Download: ML19340E990 (5)

Text

.

The Light m m P u y s ees,em tish,,e , & re. . , e o. ee, i < , nees, .r ..,77eoi <7is,22s.92ii l

January 9, 1981 l

ST-HL-AE-596 l SFN: V-0530 e

'[ --

l Mr. Karl Seyfrit Director, Region IV Nuclear Regulatory Consission clin ton exa $1

Dear Mr. Seyfrit:

l South Texas Project l Units 1&2 l

Docket Nos. STN 50-498, STN 50-499 Interim Report Concerning 1 Inch HILTI Kwik-Bolt Expansion Anchors On December 12, 1980, pursuant to 10CFR50.55(e), Houston Lighting &

Power Company notified your office of a potentially reportable item concern-ing a 10CFR Part 21 notification by HILTI Inc., on the tensile strengths of l

their 1 inch expansion anchors. The HILTI notification to Houston Lighting

& Power Company, dated November 25, 1980, required a reduction in the load capacity values of the 1 inch anchors.

It has been determined that the subject anchor bolts have been purchased l

for use at the South Texas Project. Because of this, the following actions '

have been taken:

l. The revised HILTI load capacity values have been incorporated into the Technical Reference Document (TRD), " Design, Instal-lation, Testing and Inspection of Concrete Expansion Anchor Bol ts . "

l

2. Designs utilizing the subject bolts are being reviewed for acceptability in light of the revised load capacity values as reflected in the revised TRD.

3. Pending this review, a " hold" has been placed on all instal-lation of the subject bolts.

l The next report concerning this matter will be submitted by March 20..

1981.

1 F1011609@S

$@19 '

o

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i l Houuon Lighting & Power Compan> January 9, 1981 l ST-HL-AE-596 >

SFN: V-0530

] Page 2 If there are any questions, please contact Mr. M. E. Powell at (713) 676-602.

Very truly yours, '

E$etive President l

TAP /mf 1

1 i

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January 9,1981 Houston Lighting & Power Oimpan> ST-HL-AE-596 SFN: V-0530 Page 3 cc: J. H. Goldberg D. G. Barker Howard Pyle R. L. Waldrop H. R. Dean D. R. Beeth J. D. Parsons G. B. Painter L. K. English A. J. Granger R. A. Frazar H. S. Phillips (NRC)

.1. O. Read (Read-Poland.Inc.)

M. D. Schwarz Baker & Botts)

R. Gordon Gooch Baker & Botts)

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

Director, Office of Inspection & Enforcement Nuclear Regulatory Commission -

Washington, D. C. 20555 l

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i Houunn Lighting & Power Compan) January 9, 1981 ST-HL-AE-596 SFN: V-0530 Page 4 M. L. Borchelt Executive Vice President Central Power 5 Light Company P. O. Box 2121 Corpus Christi, Texas 78403 s R. L. Range Central Power 6 Light Company P. O. Box 2121 Corpus Christi, Texas 78403 R. L. Hancock Director of Electrical Utilities City of Austin P. O. Box IOSS Austin, Texas 78767 T. H. Muehlenbeck City of Austin P. O. Box 108S Austin, Texas 78767 J. B. Poston Assistant General Manager of Operations City Public Service Board P. O. Box 1771 San Antonio, Texas 78296 A. vonRosenberg City Public Service Board P. O. Box 1771 San Antonio, Texas 78296 O

Houston Lighting & Power Compan3 January 9, 1981 ST-HL-AE-596 SFN: V-0530 Page 5 Charles Bechoefer, Esquire Chairman, Atomic Safety & Licensing Board U. S. Nuclear Regulatory Comission Washington, D. C. 20555 Dr. James C. Lamb, III 313 Woodhaven Road Chapel Hill, North Carolina 27514 Dr. Em eth A. Luebke Atomic Safety & Licensing Comission U. S. Nuclear Regulatory Comission Washington, D. C. 20555 Citizens for Equitable Utilities c/o Ms. Peggy Buchorn Route 1, Box 1684 Brazoria, Texas 77422 Pat Coy Citizens Concerned About Nuclear Power 5106 Casa Oro San Antonio, Texas 77422 Betty Wheeler Hoffman, Steeg & Wheeler 1006 5. Madison Anarillo, Texas Brian E. Rerwick Assistant Attorney General for the State of Texas P. O. Box 12548 Capitol Station Austin, Texas 78711 Bernard M. Bordenick Hearing Attorney Office of the Executive Legal Director

• U. S. Nuclear Regulatory Comission Washington, D. C. 20555