ASME’s B31.8 Gas Transmission and Distribution Piping Systems covers gas transmission and distribution piping systems, including gas pipelines, gas compressor stations, gas metering and regulation stations, gas mains, and service lines up to the outlet of the customer’s meter set assembly. It includes gas transmission and gathering pipelines, including appurtenances that are installed offshore for the purpose of transporting gas from production facilities to onshore locations; gas storage equipment of the closed pipe type that is fabricated or forged from pipe or fabricated from pipe and fittings; and gas storage lines. Key changes to this revision include: updating of gas treating facilities section; updating of repair procedures for steel pipelines section; addition of section on hazard analysis for offshore compressor stations; updating of offshore test pressure section. This Code prescribes comprehensive solutions for materials, design, fabrication, assembly, erection, testing and inspection. It also serves as a companion to ASME’s other B31 codes on piping systems. Together, they remain essential references for anyone engaged with piping. This Code prescribes comprehensive solutions for materials, design, fabrication, assembly, erection, testing and inspection. It also serves as a companion to ASME’s other B31 codes on piping systems. Together, they remain essential references for anyone engaged with piping.