ASME B31.3-2004 pdf download
ASME B31.3-2004 pdf download.Process Piping.
(6) Metallic piping elements suitable for Normal Fluid Service in Chapters I through VI may also be used under severe cyclic conditions unless a specific requirement for severe cyclic conditions is stated. (e) High Pressure Piping. Chapter IX provides alterna- tive rules for design and construction of piping desig- nated by the owner as being in High Pressure Fluid Service. (1) These rules apply only when specified by the owner, and only as a whole, not in part. (2) Chapter IX rules do not provide for Category M Fluid Service. See para. K300.1.4. (3) Paragraph designations begin with “K.” (f) Appendices. Appendices of this Code contain Code requirements, supplementary guidance, or other information. See para. 300.4 for a description of the sta- tus of each Appendix. 300.1 Scope Rules for the Process Piping Code Section B31.3 1 have been developed considering piping typically found in petroleum refineries; chemical, pharmaceutical, textile, paper, semiconductor, and cryogenic plants; and related processing plants and terminals. 300.1.1 Content and Coverage (a) This Code prescribes requirements for materials and components, design, fabrication, assembly, erection, examination, inspection, and testing of piping. (b) This Code applies to piping forallfluids, including (1) raw, intermediate, and finished chemicals (2) petroleum products (3) gas, steam, air, and water (4) fluidized solids (5) refrigerants (6) cryogenic fluids (c) See Fig. 300.1.1 for a diagram illustrating the appli- cation ofB31.3 piping atequipment. The jointconnecting piping to equipment is within the scope of B31.3. 300.1.2 Packaged Equipment Piping. Also included within the scope of this Code is piping which intercon- nects pieces or stages within a packaged equipment assembly. 300.1.3 Exclusions. This Code excludes the fol- lowing: (a) piping systems designed for internal gage pres- sures at or above zero but less than 105 kPa (15 psi), provided the fluid handled is nonflammable, nontoxic, and not damaging to human tissues as defined in 300.2, and its design temperature is from −29°C (−20°F) through 186°C (366°F) (b) power boilers in accordance with BPV Code 2 Sec- tion I and boiler external piping which is required to conform to B31.1 (c) tubes, tube headers, crossovers, and manifolds of fired heaters, which are internal to the heater enclosure (d) pressure vessels, heat exchangers, pumps, com- pressors, and other fluid handling or processing equip- ment, including internal piping and connections for external piping 300.2 Definitions Some ofthe terms relating to pipingare defined below. For welding, brazing, and soldering terms not shown here, definitions inaccordance withAWS Standard A3.0 3 apply. air-hardened steel: a steel that hardens during cooling in air from a temperature above its transformation range. anneal heat treatment: see heat treatment. arc cutting: a group of cutting processes wherein the severing or removing of metals is effected by melting with the heat of an arc between an electrode and the base metal. (Includes carbon-arc cutting, metal-arc cut- ting, gas metal-arc cutting, gas tungsten-arc cutting, plasma-arc cutting, and air carbon-arc cutting.) See also oxygen-arc cutting. arc welding (AW): a group of welding processes which produces coalescence of metals by heating them with an arc or arcs, with or withoutthe applicationofpressure and with or without the use of filler metal. assembly: the joining together of two or more piping components by bolting, welding, bonding, screwing, brazing, soldering, cementing, or use of packing devices as specified by the engineering design. automatic welding: welding with equipment which per- forms the welding operation without adjustment of the controls by an operator. The equipment may or may not perform the loading and unloading of the work. backing filler metal: see consumable insert. backing ring: material in the form of a ring used to sup- port molten weld metal. balanced piping system: see para. 319.2.2(a).
