ML19262C424

Responds to IE Bulletin 79-02,Revision 2, Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts. Expansion Anchors in Concrete Block Walls Not Used.Util 790705 Response Need Not Be Modified or Amended

ML19262C424
Person / Time
Site:	Wolf Creek, Callaway, Sterling
Issue date:	01/03/1980
From:	Petrick N STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
IEB-79-02, IEB-79-2, IEB-79-2-R2, NUDOCS 8002120445
Download: ML19262C424 (1)

Text

Y SNUPPS Standardized Nucteer Urnt

> weet Plant System

', Choke Cherry Road Nicholas A. Petrick Rockville, Maryland 20850 Executive Director mnasSmo January 3,1980 SLNRC 80-1 FILE: 0278.10 SUBJ: Revision 2 to IE Bulletin 79-02:

Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bol ts Mr. Boyce Grier Director, Region I Office of Inspection and Enforcement US Nuclear Regulatory Comission 631 Park Avenue King of Prussia, Pennsylvania 19406 Docket Nos.: STN 50-482 STN 50-483 STN 50-485 STN 50-486 Ref: SLNRC 79-11 dtd. July 5,1979: IE Bulletin 79-02, Revision 1

Dear Mr. Grier:

This letter is forwarded on behalf of the SNUPPS Utilities as a generic response to the subject IE Bulletin revision. As requested by the NRC, the additional information and clarifications furnished in the subject bulletin revision have been examined by SNUPPS. As a result of this examination, it is concluded that the initial SNUPPS response provided via the reference letter satisfactorily resolves NRC concerns involving the use of concrete expansion anchor bolts for pipe support base plates on Seismic Category I structures. In regard to Items 5 and 6 of Revi-sion 2 to the subject bulletin, please note that the SNUPPS Project has not used and currently does not anticipate using expansion anchors in concrete block walls or structural steel members directly attached to the concrete by expansion anchors to support Seismic Category I piping.

Consequently, the initial SNUPPS response need not be modified or amended to address these items of concern.

Ver4truly yours,

\ -e % c Nicholas A. Petrick j g 47 } ()9 SJS:dck cc: Mr. James G. Keppler, Director, Region III, USNRC Mr. Karl V. Seyfrit, Director, Region IV, USNRC Mr. Victor Stello, Jr., Director, Office of Inspection and Enforce-ment, USNRC Washington, D.C.

80021 20945