Large industrial and institutional users of argon, nitrogen, andhelium need storage units on their premises with greater capacitythan that provided by manifolded cylinders. These bulk supplysystems are an assembly of storage containers, pressure regulators,pressure relief devices (PRDs), vaporizers, manifolds,interconnecting piping, and, where present, liquid transferequipment. The inert gases are stored as gas or liquid in eitherstationary or portable containers. The bulk system terminates atthe point where gas at service pressure enters the supply line.
This standard does not apply to carbon dioxide systems. Foradditional requirements on bulk inert gas systems at healthcare facilities, see CGA M-1, Guide for Medical Gas SupplySystems at Consumer Sites, NFPA 55, Compressed Gases andCryogenic Fluids Code, and NFPA 99, Health CareFacilities Code [1, 2, 3].1 Bulk carbon dioxidesystem requirements are found in NFPA 55 and CGA G-6.1,Standard for Insulated Liquid Carbon Dioxide Systems atConsumer Sites [2, 4].
The purpose of this standard is to provide information oninstallation of bulk inert gas systems for argon, nitrogen, andhelium service.
1 References are shown by bracketed numbers and arelisted in order of appearance in the reference section.