Provides minimum safety requirements and includes recommendations for the design, fabrication, installation, inspection, testing, operation and maintenance of gas distribution systems for pipes manufactured from steel, cast iron, copper and plastics (unplasticised polyvinylchloride and polyethylene). It covers gas distribution systems operating at pressures not exceeding 1050 kPa. The Code covers gas mains and service pipes up to the consumer's meter inlet. It also covers the conditions of use of elements of these piping systems, including but not limited to pipe, fittings, flanges, bolting, gaskets, valves, regulators, pressure vessels, pulsation dampers and pressure-relief devices.

AS 4645-2005