2021-06-24_REVISION - M2012032 - Laserfiche WebLink

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ASME B31.3-2016 (1) ASTM A263, Corrosion-Resisting Chromium (c) Except for components designed in accordance Steel Clad Plate, Sheet, and Strip with provisions of para.323 4.3(a),fluid service require- (2) ASTM A264, Stainless Chromium-Nickel Steel ments for materials stated in this Code shall not restrict Clad Plate, Sheet, and Strip their use as cladding or lining in pipe or other compo- (3) ASTM A265,Nickel and Nickel-Base Alloy Clad nents. Fluid service requirements for the outer material Plate, Sheet, and Strip (including those for components and joints)shall govern, except that temperature limitations of both inner and Then pressure design in accordance with rules in outer materials, and of any bond between them, shall para.304 may be based upon the total thickness of base be considered. metal and cladding after any allowance for corrosion (d) Fabrication by welding of clad or lined piping has been deducted, provided that both the base metal components and the inspection and testing of such com- and the cladding metal are acceptable for Code use ponents shall be done in accordance with applicable under para. 323.1, and provided that the clad plate has provisions of the BPV Code, Section VIII, Division 1, been shear tested and meets all shear test requirements UCL-30 through UCL-52,or the provisions of Chapters V of the applicable ASTM specification. The allowable and VI of this Code,whichever are more stringent. stress for each material (base and cladding) shall be taken from Appendix A, or determined in accordance 323.5 Deterioration of Materials in Service with the rules in para. 302.3, provided, however, that Selection of material to resist deterioration in service the allowable stress used for the cladding portion of the is not within the scope of this Code. See para. 300(c)(6). design thickness shall never be greater than the allow- Recommendations based on experience are presented able stress used for the base portion. (b) For all other metallic clad or lined piping compo- nents,the base metal shall be an acceptable Code mate- rial as defined in para. 323.1 and the thickness used in 325 MATERIALS — MISCELLANEOUS pressure design in accordance with para. 304 shall not include the thickness of the cladding or lining. The 325.1 joining and Auxiliary Materials allowable stress used shall be that for the base metal When selecting materials such as adhesives,cements, at the design temperature. For such components, the solvents, solders, brazing materials, packing, and cladding or lining may be any material that,in the judg- 0-rings for making or sealing joints, the designer shall ment of the user,is suitable for the intended service and consider their suitability for the fluid service.(Consider- for the method of manufacture and assembly of the ation should also be given to the possible effects of the piping component. joining or auxiliary materials on the fluid handled.)