ML20023C042

Affidavit of Jc Finneran on Applicant Response to Board Notification 82-105 Re Pipe Clamps Employed on ASME Code Class I Piping

ML20023C042
Person / Time
Site:	Comanche Peak
Issue date:	05/05/1983
From:	Finneran J TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20023C035	List: ML20023C034 ML20023C037 ML20023C039 ML20023C040 ML20023C041 ML20023C042 ML20023C043
References
NUDOCS 8305090525
Download: ML20023C042 (3)

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD In the Matter of )

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TEXAS UTILITIES GENERATING ) Docket Nos. 50-445 and COMPANY, et - al. ) 50-446

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(Comanche Peak Steam Electric ) (Application for Station, Units 1 and 2) ) Operating Licenses AFFIDAVIT OF JOHN C. FINNERAN, JR.

REGARDING ANALYSIS OF PIPE CLAMPS DESIGNATED IN BOARD NOTIFICATION 82-105 I, John C. Finneran, Jr. , being first duly sworn, do depose and state as follows: I am employed by Texas Utilities Services, Inc., as Pipe Support Engineer for Comanche Peak. As such, I am familiar with Applicants' response to Board Notification 82-105 regarding certain pipe clamps employed on ASME Code Class I piping. A statement of my professional qualifications was admitted into evidence in this proceeding as Applicants' Exhibit 142B. This affidavit provides information in response to the Board's inquiries regarding Board Notification 82-105 and Applicants' evaluation of the subject pipe clamps used at Comanche Peak.

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4 ANALYSIS OF BOARD NOTIFICATION 82-105 REGARDING PIPE CLAMPS AT COMANCHE PEAK .

Board Notification ("BN")82-105, " Alleged Design Defici-encies" (November 24, 1982) concerns an alleged design deficiency in certain pipe clamps used on ASME Code Class I piping.

Specifically, that allegation involved the consideration of local pipe wall stresses, due to support loads introduced by those pipe clamps. The Board has inquired as to whether these pipe clamps have been installed at Comanche Peak, and if so, how they are evaluated.1 Although BN 82-105 did not specify the particular clamps of concern, the NRC has indicated to Applicants that they have determined that the clamps are specially designed " stiff" pipe clamps supplied by, among others, Western Piping & Engineering Company. Applicants have reviewed their pipe clamp designs and have determined that only three such clamps have been utilized on Class I piping at Comanche Peak. These clamps are all on a 12-inch line in the Residual Heat Removal System. To assure that the stresses which were of concern in BN 82-105 have been addressed, Applicants are reviewing the stresses imposed by those clamps, independent of any analysis performed by the manufacturer. This review is being conducted by l

Westinghouse, as the piping analyst for Classs I piping at 1 April 7, 1982, Conference Call, Tr. 24.

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Comanche Peak. Specifically, Westinghouse .will' consider the. clamp

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pre-load stresses in the. pipe and pipe-to-clamp load transfer stresses. , ci.:..._ ,

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Westinghouse expects to complete its analysis of these 9

stresses in,the~near future. To date, the analysis has noti

. disclosed any violation .of'applicaQe, Code requirements for the analyzed stres'ses;, If the analysis determines that any applicable i ~ASME. Code require'ments are not met, Applicants will .take appropriate corrective actioh. -

The analysis of"these clamps will be subjec't t'o - -

NRC review pnd eqrrective actiori (if any) will be , subject to NRC

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-- .C Finneran,-Jr. . /, .

County of Somervell)

State of Texas .)

Subscr'ibed and sworn to before me this 5th day of.' hay 1983. ~

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. . Notgry Public> O This is a.telecopy' facsimile. The oiig'inal'will be~

transm.itted under separate, cover. ,. ..

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