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ANSI/ASMEASME B31.3ASME B31.1Chemical & OilRefineriesPower Plant1

ANSI/ASME B31.1 power pipingThe ASME B31.1, Piping for industrial plants and marine applications.The ASME B31.1 Power piping specification regulates the proper installation,inspection, and maintenance of power piping systems, dictating the properdesign, materials, fabrication, erection, and testing of piping.Piping elementsPiping components specifically covered by the ASME B31.1 specificationinclude1.) Pipe2.) Flanges3.) Bolting4.) Gaskets5.) Valves6.) Relief devices7.) Fittings8.) Pressure bearing components.Additional piping components used to prevent undue structural stress uponinstalled piping, including supports and hangers are also covered.

ANSI/ASME B31.1 power pipingExternal pipingExternal piping such as external boiler piping is governed by theASME B31.1 specification. This code regulates all high temperature,high pressure boilers where steam pressure exceeds 15 psig, waterpressure exceeds 160 psig, or temperature exceeds 250 Fahrenheit.Typical external piping applications include the transportation ofsteam, water, oil, gas, or oxygen.IdentificationExternal boiler piping is generally considered to be piping attacheddirectly to the boiler, where the first circumferential joint begins, thefirst bolted flange connector begins, or the first threaded connectorjoint begins. External boiler piping may be identified by the verificationof proper inspection and stamping codes located on the piping, whichis set in accordance with the ASME Boiler and pressure vesselspecification.

ANSI/ASME B31.1 power pipingCode exclusionsCertain types of piping are excluded from the regulatory codeestablished by the ASME B31.1 Power Piping specification.Excluded piping elements include building heating anddistribution steam and condensate piping designed for 15(psig) or less, hot water heating systems designed for 30(psig) or less, piping for hydraulic or pneumatic tools, andpiping for marine or other installations currently under Federalcontrol. Structural non-piping building elements, such astowers, building frames, tanks, mechanical equipment,instruments, and foundations are also excluded from theASME B31.1 power piping specification.

ANSI/ASME B31.3 chemical pipingB31.3 - 2002 - Process PipingDesign of chemical and petroleum plants andrefineries processing chemicals andhydrocarbons, water and steam.This Code contains rules for piping typically found inpetroleum refineries; chemical, pharmaceutical,textile, paper, semiconductor, and cryogenic plants;and related processing plants and terminals.This Code prescribes requirements for materials andcomponents, design, fabrication, assembly, erection,examination, inspection, and testing of piping.

ANSI/ASME B31.3 chemical pipingThis Code applies to piping for all fluids including:(1) Raw, intermediate, and finished chemicals;(2) Petroleum products;(3) Gas, steam, air and water;(4) Fluidized solids;(5) Refrigerants; and(6) Cryogenic fluids.Also included is piping which interconnects pieces orstages within a packaged equipment assembly.

Comparison ASME B31

Comparison ASME B31NOTE:Appendix A of ASME B31.1 is for material strength/stress.

Pressure classRatings for above ground metallic systems aregenerally Governed by their joints.Frequently these are Flange joints manufacturedin accordance with ASME B16.5 (metallicflanges)Ratings for flanges (and some other pipingcomponents such as valves) are designated bypressure class

Some ASME listed components

Piping ComponentsValves

PIPE

PIPE

ASME piping components

ASME piping components

ASTM piping components

ASTM piping components

ASTM piping components

ASTM piping components

API piping components

PIPE FITTING

PIPE FITTING

ASME piping components

ASME piping components

ASTM piping components

ASTM piping componentsASTM A351Standard Specification for Castings, Austenitic (stainless steel) forPressure-Containing Parts

ASTM piping components

FLANGES

FLANGES

ASME piping components

ASME piping components

ASTM piping components

ASTM piping componentsASTM A351Standard Specification for Castings, Austenitic (stainless steel) forPressure-Containing Parts

ASTM piping components

ASME piping components

ASME piping components

ASME piping components

ASTM piping componentsASTM A193Alloy steel and stainless steel bolting material for pressure vessels,valves, flanges, and fittings for high temperature or high pressureservice, or other special purpose applications

ASTM piping components

VALVES

VALVES

ASME piping components

ASME piping components

ASTM piping components

ASTM piping componentsASTM A351Standard Specification for Castings, Austenitic (stainless steel) forPressure-Containing Parts

API piping components

STRAINER

STRAINER

ANSI/ASME B31.3 Process piping codeListed components:Can be used with theirpressure temperature ratingsand any additional limitationsdescribed in codeUn-listed components:Such as Strainers as longas the product can providestrength & performanceequivalent to standardcomponents and qualified forpressure temperature designas required in the code.

INSTRUMENT

INSTRUMENT

Standard related to instrument

Standard related to instrument

Vent & drain

EXPANSION JOINT

EXPANSION JOINT