ML20004D211

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Suppls 790710 & 1213 Responses to IE Bulletin 79-02,Revision 2, Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts. Assessment of Usage of Expansion Anchors Will Be Completed by 810715
ML20004D211
Person / Time
Site: Satsop
Issue date: 05/14/1981
From: Leddick R
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To: Engelken R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-79-02, IEB-79-2, NUDOCS 8106080608
Download: ML20004D211 (1)


Text

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o f .b h.\NJfQ\ n Washington Public Power Supply System g sd i A JO;NT OPER \ TING AGENCY k D y 13 P O BOX 1223 ELMA WASHINGTON 98tet

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Docket Nos. 50-508 and 50-509 Mr. R. H. Engleken

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-> 0 k 5p U. S. Nuclear Regulatory Commission Suite 202, Walnut Creek Plaza May 14,1981 w =M'h yg 1990 N. California Boulevard G03-81 -1069 j Igg, @ 5 Walnut Creek, California 94596 o Eb c s

Dear Mr. ..Engl eken :

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Subject:

PROJECT NOS. 3 AND 5 IE BULLETIN NO. 79-02, REVISION NO. 2

" PIPE SUPPORT BASE PLATE DESIGNS USING CONCRETE EXPANSION AflCHOR BOLTS" References : 1) Letter, D. L. Renberger to R. H. Engleken, same subject, dated July 10,1979, G03-79-1278.

2) Letter, D. L. Renberger to R. H. Engleken, same subject, dated December 13,1979, G03-79-2340.

This letter supplements reference letters 1 and 2 and provides the Supply System's current status on the usage of concrete expansion anchors on the WNP-3/5 projects. Whereas it has been the Supply System's intention not to use concrete expansion anchors in the original design of WPPSS Quality Class I attachments, expansion anchors have been designed for use in Class I attachments of HVAC duct, cable tray and pipe supports to the concrete struc-tures. These attachments are now being inventoried to document the extent to which expansion anchors have been specified in these designs and that l the designs comply with the criteria contained in IE Bulletin 79-02 as l committed ir. reference letter 1.

Upon completion of our current assessment of the usage of expansion anchors, the NRC will be advised of the results. It is anticipated that this survey ui'l be completed by July 15, 1931.

l Veg tr;uly yours, e  ? 4 R. S. LEDDICK Program Director, WNP-3/5 l cc: D. Smithpeter (BPA) l J. A. Adams W. Woods (NUS)

N. S. Reynolds, D & L H. D. Thornburg Ebasco Elma Ebasco, N.Y. (Licensing)

WNP-3/5 Files Richland l 810e ogo fg Q . W 57