ML19305C477

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Responds to IE Bulletin 79-02,Revision 2, Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts. Expansion Anchor Bolts in Concrete Walls & Structural Steel Shapes in Lieu of Base Plates Not Used at Facilities
ML19305C477
Person / Time
Site: South Texas  STP Nuclear Operating Company icon.png
Issue date: 01/03/1980
From: Eric Turner
HOUSTON LIGHTING & POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-79-02, IEB-79-2, NUDOCS 8003280644
Download: ML19305C477 (1)


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Bect& To.ver January 3, 19 ,79 RO Box 1700 ST-HL-AE-399 Houston.Tcxas 77001 SFN: V-0540 Director, Region IV Office of Inspection and Enforcement 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76102

Dear Sir:

South Texas Project Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 NRC IE Bulletin No. 79-02, Revision 2 Bulletin No. 79-02, Revision 2, received November 12, 1979, has been reviewed by Houston Lighting & Power Company. Investigation into the concerns of Items 5 and 6 of this Bulletin indicates that:

1) No expansion anchor bolts have been used in concrete block (masonry) walls for cttaching pipe supports in Seismic Cate-gory 1 systems.
2) No pipe supports with expansion anchor bolts have used struc-tural steel shapes in lieu of base plates for anchoring.

Based upon these results, no further action is necessary.

If you have any questions, please contact us.

Very truly yours,

/ =- _

E. A. Turner Vice President Power Plant Construction

& Technical Services FLW/prg cc: Director, NPC Office of Inspection and Enforcement Division of Reactor Construction Inspection M. D. Schwar' (Baker & Botts)

R. Gordon Gotch (Baker & Botts)

J. R. Newman "owenstein,Newman,Reis,Axelrad,& Toll)

D. G. Barker A. J. Granoer R. A. Frazar #

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