ML20082K457

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Responds to Re IE Bulletin 80-11, Joint Reinforcement in Masonry Walls. Reevaluation Will Be Made of All Class I Masonry Walls Seismically Qualified Considering Dur-o-Wall as Structural Element
ML20082K457
Person / Time
Site: Fort Saint Vrain Xcel Energy icon.png
Issue date: 11/08/1983
From: Brey H
PUBLIC SERVICE CO. OF COLORADO
To: Johnson E
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-SSINS-6820 IEB-80-11, P-83364, TAC-42925, NUDOCS 8312050171
Download: ML20082K457 (1)


Text

, _ _ _ _ _ _ _ _ - - _ _ _ - _ _

-l i public Service Company &Oderado l

i 2420 W. 26th Avenue, Suite 100D Denver, Colorado 80211 O

Q l

November 8,1983 h

Fort St. Vrain Unit No. 1 P-83364 Mr. E. H. Johnson Chief, Reactor Project Branch 1  ! " - " - -

Nuclear Regulatory Commission

  • q Region Iv f W23m s 611 Ryan Plaza Drive Suite 1000 (h d i M

d Arlington, Texas 76012 DOCKET N0.: 50-267

SUBJECT:

I&E Bulletin 80-11, Joint Reinforcement in Masonry Walls

REFERENCE:

NRC Letter from E.H. Johnson to 0.R. Lee (G-83375)

Dear Mr. Johnson:

The following is Public Service Company of Colorado's response to your letter of October 18, 1983 addressing the structural capacity of joint reinforcement in masonry walls. While PSC is of the opinion that "Dur-o-Wall" is an acceptable structural reinforcement for masonry walls and does have moment resisting capabilities, a re-evaluation will be,made of all Class I masonry walls which were seismically qualified considering Dur-o-Wall as a structural element. Per Attachment 2 of the above referenced letter, no structural credit will be taken for the Dur-o-Wall. These walls, as required, will be reinforced with metal bar straps to withstand the safe shutdown seismic event. This work shall be completed by July 2, 1984. The documentation for this work will be available in our office for your review. If you have any questions concerning this project, please contact Mr. J.R. Reesy at (303) 571-8406. Wry truly yours, W t i H. L. Brey, Manager Nuclear Engineering Division HLB /MM:pa 8312050171 831108 3 A PDR ADOCK 05000267 8 F G PDR I}}