ML20125D882

Requests Addl Info Re Confirmatory Piping Analysis by NRC Consultant for Util Steam Electric Station

ML20125D882
Person / Time
Site:	Comanche Peak
Issue date:	01/08/1980
From:	Baer R Office of Nuclear Reactor Regulation
To:	Gary R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
References
NUDOCS 8001170023
Download: ML20125D882 (4)

Text

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Docket Nos. 50-445 and 50-446 Fr . R . J. G a ry l Executive Vice President and Ceneral Fanager l Texas Utilities Generating Company l 2001 Bryan Tower I Dallas, Texas 75201

SUBJECT:

C0ilFIRMATORY PIPIT:G ANALYSIS SY NRC CCNSULTANT FOR CDMANCPE PEAK STEAM ELECTRIC STATION Recently, the Mechanical Engineering Cranch (I'EB) has instituted a progra:r of performing an indepencent confirmatory piping analysis for each plant under-going operating license review. For Cceanche Peak, this analysis ..ill se cer-forraed by our contract personnel at the Energy Technology Engineering Center (ETEC). The purpose of this independent analysis will t e to ver' fy shat the subject piping system meets the applicable ASME Ccde stress cr;teria. ' e cu not intend to resclve differences t.et';een our calculatec stresses anc incse of ycur designer, unless unusually large ciscreparcies are founc cc urless Code criteria are not met.

Tnis program will allow MEB to verify on a saapling basis that your designer has correctly nodeled its piping, has correctly used its computer ccces, anc has adequately accounted for the piping's as-built condition.

We will require certain information in creer to prcceed with our analysis.

Upon receipt of this information, ETEC will evaluete it to deterr"e if acci-tional inforuation or clarification is required. Failowi ng tne i n * : el N :e',-

ue hope to schedule a site visit to acquaint the ETEC personnel c!itr the ;13nt and rare specifically the piping systen under review. At t h a t t h e c.e c a ', C i s-cuss the piping analysis with your design engineers and obtain any adcitional information required.

We have chosen for our Conanche Peak analysis the main steam line 'cr Un;; 1 fron Stean Generater No. 3 to the penetration cesignated 'l-3 (nain steam l'ine inside containnent, reference Figure 10.3 cf FSAR). You should cuamit t h ra.e copies of the following information:

90023222 8001170 0h i

Mr. R. J. Gary l. piping layout and isor:.etric drawings sufficient to rocel the syster.1

2. support drawings with support and hanger spring rates

3. the piping design specification

4. valve weights and CG's

5. appropriate response spectra

6. appropriate anchor point movements

7. any design changes notices not yet incorporated into the piping or support drawings (later DCN's should be forwarded as received) .

Two copies of the above infcrmation should be submitted to this acdress:

Attention: S. B. Burwell; and one copy should be sent to:

P,r . L. J. Auge, Manager Facility Design Engineering Energy Technology Engineering Center P. O. Box 1449 Canoga Park, California 91304 As our analysis proceeds, we will also recuest that you pro;;de certain an;lyti-cal results for comparative purposes, such as the ASD.E Code recuired Cesica Reports.

Si ncerely, ,

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, Robert L. Baer, Chier Light hater Reactors Cranch :o. 2 Division cf Project :.anager:ent ccs: See next page l

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A Mr. R. J. Gary I ,AN d '.289 Er. R. J. Gary Executive Vice President and General t'anager Texas Ut Mities Generating Company 2001 Cryan Towers Dallas, Texas 75201 Nicholas S. Reynolds, Esq.

Debevoise & Liberman 1200 Seventeenth Street Washington, D.C. 20036 Spencer C. Relyee , Esq.

Worshan, Forsythe & Sampels 2001 Bryan Tower Dallas, Texas 75201 Er . Hor.se r C . Sc hmi dt Project Manager - Nuclear Plants Texas Utilities Generating Company 2001 Bryan Tower Dallas, Texas 75201 Mr. H. R. Rock Gibbs and Hill , Inc.

393 Seventh Avenue t:ew Ycrk , New York 10001 fir. G. L. Hohnann Westinghouse Electric Corporation P. O. Box 355 Pittsburgh, Pennsylvania 15230 Richard W. Lowerre , Esq.

Assistant Attorney General Environmental Protection Division P. O. Box 12548, Capitol Station Austin, Texas 78711 Mrs. Juanita Ellis, President Citizens Association for Sound Energy 1426 South Polk Dallas, Texas 75224 Geoffrey N. Gay, Esq.

West Texas Legal Services 406 W.T. Waggoner Building 810 Houston Street Fort Worth, Texas 76102 90023224 -

i Mr. R. J. Gary .

I Ms. Nancy Holdam Jacobson Citizens for Fair Utility Regulation 1400 Hemphill i fort Worth, Texas 76104 Mr. Richard Fouke 1668-B Carter Drive Arlington, Texas 76010 Resident inspector / Comanche Peak Nuclear Pov.er Station c/o U. S. Nuclear Regulatory Connission P. O. Box 38 Glen Rose, Texas 70642 l

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