ASME B31.3 – Process Piping: 2020 [paper]

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ASME B31.3 – Process Piping 2020

Rules for the Process Piping Code Section B31.3 have been developed considering piping typically found in petroleum refineries; chemical, pharmaceutical, textile, paper, semiconductor, and cryogenic plants; and related processing plants and terminals.

This Code prescribes requirements for materials and components, design, fabrication, assembly, erection, examination, inspection, and testing of piping.

This Code applies to piping for all fluids, including

• raw, intermediate, and finished chemicals
• petroleum products
• gas, steam, air, and water
• fluidized solids
• refrigerants
• cryogenic fluids

Key changes:

• Unlisted Valves (para. 307)
• Flexibility and Stress Intensification Factors (paras. 319 & 320)
• Impact Testing (paras. 323.2.2, 323.3.1)
• Flange Attachment Welds (para. 328.5.2)
• Heat Treatment (para. 330.1, 331.1)
• High Pressure Fluid Service Pressure Design (para. K302.3.2)
• High Pressure Fluid Service Fatigue Analysis (paras. K302.3, K304.8)

This publications is for manufacturers, users, constructors, designers, and others concerned with the design, fabrication, assembly, erection, examination, inspection, and testing of piping, plus all potential governing entities.