ASME B31.8-2000 pdf free download.Gas Transmission and Distribution Piping Systems ASME Code for Pressure Piping, B31
802.22 This Code is concerned with
(a) Safety of the general public.
(b) Employee safety to the extent that it is affected by basic design, qualityofmaterials and workmanship, and requirements for testing, operations, and maintenance of gas transmission and distribution facilities. Existing industrial safety procedures pertaining to work areas, safety devices, and safe work practices are not intended to be supplanted by this Code.
802.23 It is not intended that this Code be applied retroactively to such aspects of existing installations as design, fabrication, installation, and testing at the time of construction. Further, it is not intended that this Code be applied retroactively to established operating pres- sures of existing installations, except as provided for in Chapter V.
802.24 Provisions of this Code shall be applicable to operating and maintenance procedures of existing installations, and when existing installations are uprated.
802.25 Qualification of Those Performing Inspec- tions. Individuals who perform inspections shall be qualified by training and/or experience to implement the applicable requirements and recommendations of this Code.
802.26 For further information concerning pipeline integrity, reference the nonmandatory supplement ASME B31.8S, Managing System Integrity of Gas Pipelines.
802.3 Offshore Gas Transmission See Chapter VIII for additional requirements and defi- nitions applicable to offshore gas transmission systems.
803 PIPING SYSTEMS DEFINITIONS
803.1 General Terms 803.11 Gas, as used in this Code, is any gas or mixture of gases suitable for domestic or industrial fuel and transmitted or distributed to the user through a piping system. The common types are natural gas, manufactured gas, and liquefied petroleum gas distributed as a vapor, with or without the admixture of air.
803.12 Operating company, as used herein, is the individual, partnership, corporation, public agency, or other entity that operates the gas transmission or distri- bution facilities.
803.13 Private rights-of-way, as used in this Code, are rights-of-way not located on roads, streets, or high- ways used by the public, or on railroad rights-of-way. 803.14 Parallel encroachment, as used in this Code, is the portion of the route of a pipeline or main that lies within, runs in a generally parallel direction to, and does not necessarily cross the rights-of-way of a road, street, highway, or railroad.
803.15 Hot taps are branch piping connections made to operating pipelines, mains, or other facilities while they are in operation. The branch piping is con- nected to the operating line, and the operating line is tapped while it is under gas pressure.
803.16 Vault is an underground structure that may be entered and that is designed to contain piping and piping components (such as valves or pressure regu- lators).
803.17 Transportation ofgas is gathering, transmis- sion, or distribution of gas by pipeline or the storage of gas. 803.18 Pipeline is all parts of physical facilities through which gas moves in transportation, including pipe, valves, fittings, flanges (including bolting and gas- kets), regulators, pressure vessels, pulsation dampeners, relief valves, and other appurtenances attached to pipe, compressor units, metering stations, regulator stations, and fabricated assemblies. Included within this defini- tion are gas transmission and gathering lines, including appurtenances, that are installed offshore for trans- porting gas from production facilities to onshore loca- tions and gas storage equipment of the closed pipe type, that is fabricated or forged from pipe or fabricated from pipe and fittings.
803.2 Piping Systems
803.21 Transmission system is one ormore segments of pipeline, usually interconnected to form a network, that transports gas from a gathering system, the outlet of a gas processing plant, or a storage field to a high- or low-pressure distribution system, a large-volume cus- tomer, or another storage field.
803.211 Transmission line is a segment ofpipeline installed in a transmission system or between storage fields.
803.212 Storage field is a geographic field con- taining a well or wells that are completed for and dedi- cated to subsurface storage of large quantities of gas for later recovery, transmission, and end use.ASME B31.8 pdf download.ASME B31.8-2000 pdf free download
