ML20126M449

Informs That Request to Use ASME Code Case N-411 Acceptable, in Response Spectrum Seismic Analysis of Piping Sys.Use of ASME Code Case N-411 Should Be Documented in Future FSAR Amend

ML20126M449
Person / Time
Site:	Byron, Braidwood, 05000000
Issue date:	07/18/1985
From:	Youngblood B Office of Nuclear Reactor Regulation
To:	Farrar D COMMONWEALTH EDISON CO.
References
NUDOCS 8508010358
Download: ML20126M449 (4)

Text

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\' Docket Nos.: SIN 50-454,50-455 J and STN 50-456, 50-457 j.\

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,1 Mr. Dennis L. Farrar' .

DirectortjY Nuclear' Licensing ,l', '

Comonweabh Edison Company Post Office Box 767 CI:icago, Illinois 60690 Dear Mr. Farrar- s

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Subject:

Use of ASME Code Case N-411-for Byron Station, Units 1 and 2 and

, N Braidwood Station, Units 1 and 2 J,

References:

Comonwealth Edison, to

1. H. Letter R. Denton,fromNRC,1 T. R.dated 'Trtip,~ June lah 1984,

Subject:

Piping Design Criteria

2. Letter from B. J.' Youngblood, NRC', to D. L. Farrar, Comonwealth Ediscn, dated January 17, 1985,

Subject:

Piping Design Criteria and Use.of ASME Code Case N-411

, , 3. Letter from K. A. Ainger, Comm6nkealth Edison, to V H. R. Denton, NRC, dated June 19', 1985,

Subject:

Use

+ of ASME Code Case N-411 7

!' j Comonwealth Edison Company,(Ceco) in Reference ~ 1 requested NRC staff concur-rence in its usk of the Pressure Vessel Research Ctmittee (PVRC) recomended higher damping va' lues in the analysis of piping 'for Byron Station, Units 1 and

, 2 and Braidwood Station, Units 1 and 2. The staff iniits response (Reference 2) stated that Ceco should reference ASME Code Case N-411, which is the staff

{ , approved position on the PVRC recomendations. Additional conditions imposed i by dhe NRCutaff for Code Case N-411 were identified in Reference 2 and Ceco

+ was requestad to revig Reference 1 to conform to the staff position.

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In Reference 3. GCo has complied with the staff request, as identified in Reference 2. Therefore, the staff finds the Ceco request to use ASME Code Case R-411 to be acceptable for use at Byron Station, Units 1 and 2 and Braid-wood Station, Units 1 and 2 in the response spectrun seismic analysis of piping systems. The use of ALME Code Case N-411 should be; documented in a future Amendinent to the FSAR. ,

For further infprmation or clarification, please cortact J. A. Stevens, the Braidwood Pr2fect Manager, at (301)492-7144.  !

i Sincerelf, 8508010358 850718 PDR ADOCK 05000454 B.J.Youngpood, Chief

.P PDR Licensing Branch No. 1 g / Division of Linensing

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JUL 181985 Mr. Dennis L. Farrar ,

Commonwecith Edison Company Byron /Braidwood s

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, y CC* i Mr. William Kortier ', Dr. Bruce von Zellen Atomic Power Distribution _) Department of Biological Sciences Wastinghouse Electric Corporation Northern Illinois University Post Office Box 355 DeKalb, Illinois 61107 Pittsburgh. Pennsylvania 15230

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J$sephGallo,Esq. U.' S. Nuclear Regulatory Consnission Byron / Resident Inspectors Office Isham, Lincoln & C5ea,le .

1120 Connecticut Ave., N. W. 4448 German Church Road Suite 840 ;

Byron, Illinois 61010

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Washington, D. C. 20036; i , Ms. Diane Chavez C. Allen Bock, Esquire 528 Gregory Street Post Office Box 342 Rockford, Illinois 61108

. Urbana, Illinois 61801 i Mrs. Phi.llip B. Johnson Thomas J. Gordon, Esquire  ; 1907 Stratford Lane Waaler, Evans & Gordon Rockford, Illinois 61107 2503 S. Neil Champaign, Illinofs 61820

, Douglass Cassel, Esq. l

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109 N.- Dearborn Street p Ms. Bridget Little Rorem Suite 1300 Appleseed Coordinator '

Chicago, Illinois 60602 '

117NorthLindeiStreet i g- '

Essex, Illinois 60935 Hs. Pat Morrison 5568 Thunderidge Drive

( , Mr. Edward R. Crass Rockford, Illinois 61107 -

Nuclear Safeguards and Licensing ,

Division David C. Thomas, Esq.

Sargent 8.Lundy Engineers 77 S. Wacker Drive 1 55 East Monroe Street Chicago, Illinois 60601 l fc Chicago, Illinois 606g3 Rebecca J. Lauer, Esq.

U. S. Nuclear Regulatory Commission ,

Isham, Lincoln & Beale Resident Inspectors Office ' , p;Three First National Plaza RR#1, Box 79 ,

/ Suite 5200 Braceville, Illinois 60407  !! Chicago, Illinois 60602 y :; + ;f .

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Regional Administrator

! U. S. NRC, Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Erie Jones, Director Illinois Emergency Services and Disaster Agency

, 110 East Adams i Springfield, Illinois 62705 l

Ms. Lorraine Creek Rt. 1, Box 182 Manteno Illinois 60950 Mr. Michael C. Parker, Chief Division of Engineering Illinois Department of Nuclear Safety 1035 Outer Park Drive Springfield, Illinois 62704 i Michael Miller i Isham, Lincoln & Beale One First National Plaza 42nd Floor Chicago, Illinois 60603 Jane M. Whicher, Esq.

109 N. Dearborn Street Chicago, Illinois 60602

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JUL 181985

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