ML20004C256

Requests Authorization to Use ASME Code Cases 1481-2,1592-14 & 1644-8 in Fabrication of Primary Sys Components for Facilities

ML20004C256
Person / Time
Site:	Perkins, Cherokee
Issue date:	05/28/1981
From:	Dail L DUKE POWER CO.
To:	Adensam E Office of Nuclear Reactor Regulation
References
NUDOCS 8106020421
Download: ML20004C256 (2)

Text

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DUKE POWElf COMPA.VY _ "'" '

382" GENEItAL OFFICES 37f.4o!

422 n0Uf M CMU ACM STCEET CII Altl.O'l'I'E. N. C. 28242

[.Q3'%4 May 28, 1981 /

a cNh%& >%A SW Ms. E. Adensam, Acting Chief lD bN [ # C1 4 ' gv , a Q Licensing Projects Branch 4 . \,7 5fe,.

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U. S. Nuclear Regulatory Commission .g' .G/

Washington, DC 20555 ,

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)i Re: Perkins Nuclear Station Docket Nos. 50-488, 50-489, 50-490 Cherokee Nuclear Station Dockets Nos. 50-491, 50-492, 50 493 Ouke File No: P81-1412.05

Dear Ms. Adensam:

Pursuant to 10CFR50.55(a), Footnote 6, and Regulatory Guides 1.84 and 1.85, Duke hereby requests authorization to use the attached ASME Code Cases in the fabrication of the primary system components for the Perkins Nuclear Station Units 1, 2, and 3 and the Cherokee Nuclear Stations Units 1, 2, and 3.

Very truly yours,

(( m

@C al ce-Pr'esident l Design Engineering Department MST/pam Attachment i

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E All of these code cases are the result of the high operating temperatures

. experience by the Contairment Hydrogen Recombiner.

Code Case 1481 Defines allowable stresses to be used for equipment sizing when operating temperatures are above the values listed in Section III of-ASME Code.

Code Case 1592 Defines the rules governing the materials, design and stamping of components which are to experience temperatures above those prnvided for in Section III, Division I.

Code Case 1644 Defines materials in addition to those of Appendix I of Section III, Division 1, which may be used for Class 1, 2, and 3 or MC component supports constructed to the requirements of Subsection NF. This code case permits selection of the reaction chamber,0 coil support post and coil supports which experience temperatures over 800 F.

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