ASME B31G 2012 PDF

It is applica- ambient within the range of operating temperature rec- ble to all pipelines and piping systems within the scope ognized by the governing standard, and provided mate- of the transportation pipeline codes that are part of rial strength properties at temperature are considered ASME B31 Code for Pressure Piping, namely: j metal loss in pipe operating at any level of allow- ASME B Evaluation of individual deep pits within a SMTS p specified minimum tensile strength at generally corroded area should account for the effect of ambient conditions wall loss due to general corrosion. SMYS p specified minimum yield strength at ambi- c Under conditions normally encountered in buried ent conditions pipelines, the hoop stress due to internal pressure is the t p pipe wall thickness largest stress and will govern the mode of failure. The methods and criteria provided The user may choose to conduct a Level 0, Level 1, herein do not address circumferential failure due to high Level 2, or Level 3 analysis, depending on the quantity longitudinal tensile stresses. Also, the combination of hoop stress due to internal by the addition of tables in metric units. It is intended pressure and longitudinal compression could interact to that a Level 0 evaluation be conducted in the field with- lower the failure pressure in the metal loss area.

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ASME B This code prescribes minimum requirements for the design, materials, fabrication, erection, test, and inspection of power and auxiliary service piping systems for electric generation stations, industrial institutional plants, central and district heating plants. This Code contains rules for 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: 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 or stages within a packaged equipment assembly. Piping consists of pipe, flanges, bolting, gaskets, valves, relief devices, fittings and the pressure containing parts of other piping components.

It also includes hangers and supports, and other equipment items necessary to prevent overstressing the pressure containing parts. It does not include support structures such as frames of buildings, buildings stanchions or foundations Requirements for offshore pipelines are found in Chapter IX.

Also included within the scope of this Code are: A Primary and associated auxiliary liquid petroleum and liquid anhydrous ammonia piping at pipeline terminals marine, rail and truck , tank farms, pump stations, pressure reducing stations and metering stations, including scraper traps, strainers, and prover loop; B Storage and working tanks including pipe-type storage fabricated from pipe and fittings, and piping interconnecting these facilities; C Liquid petroleum and liquid anhydrous ammonia piping located on property which has been set aside for such piping within petroleum refinery, natural gasoline, gas processing, ammonia, and bulk plants; D Those aspects of operation and maintenance of liquid pipeline systems relating to the safety and protection of the general public, operating company personnel, environment, property and the piping systems.

Users are advised that other piping Code Sections may provide requirements for refrigeration piping in their respective jurisdictions. This Code shall not apply to: a any self- contained or unit systems subject to the requirements of Underwriters Laboratories or other nationally recognized testing laboratory: b water piping; c piping designed for external or internal gage pressure not exceeding 15 psi kPa regardless of size; d pressure vessels, compressors, or pumps, but does include all connecting refrigerant and secondary coolant piping starting at the first joint adjacent to such apparatus.

This Code also covers safety aspects of the operation and maintenance of those facilities. Pipeline system means all parts of physical facilities through which gas is transported, including pipe, valves, appurtenances attached to pipe, compressor units, metering stations, regulator stations, delivery stations, holders and fabricated assemblies.

The principles and processes embodied in integrity management are applicable to all pipeline systems. This Standard is specifically designed to provide the operator as defined in section 13 with the information necessary to develop and implement an effective integrity management program utilizing proven industry practices and processes. The processes and approaches within this Standard are applicable to the entire pipeline system.

This Code prescribes requirements for the design, materials, fabrication, installation, inspection, examination and testing of piping systems for building services.

It includes piping systems in the building or within the property limits. Covers piping systems that transport aqueous slurries of no hazardous materials, such as coal, mineral ores and other solids between a slurry processing plant and the receiving plant.


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