Cylinder Size Chart

Safety Info

The following are general precautions that should be observed when handling any compressed gas.

• Never identify contents by container color, except in the case of medical gases.
• Color codes are not uniform throughout the compressed gas industry.
• Cylinder contents must be identified by a decal, label, tag, or stenciling (all referred to herein as labeling). If an identifying label is lacking or not legible, return the container to the supplier, unused.



• Industrial gas containers are equipped with outlet connections that are in accordance with "Compressed Gas Association's" standard for "Compressed Gas Cylinder Valve Outlet and Inlet Connections." Such fittings are designed to prevent the connection of a gas container to a gas system with an incompatible gas. Never circumvent this protection by utilizing adapters.
• Never abuse gas cylinders by using them for rollers, blocks, striking arcs, etc.
• Never attempt to lift cylinders by the valve protection cap.
• Always move large cylinders with a hand-truck specially designed for transporting cylinders.
• Do not store or transport compressed gases in closed vans or automobiles.
• Always secure cylinders in transit or in storage to insure against their tipping over.
• Always use a pressure reducing re
gulator that is properly conditioned for the gas being used.
• Never attempt to transfill gas from one cylinder to another, or mix any gases in a cylinder.
• It is the responsibility of an employer to be certain that all employees using a gas are familiar with its specific properties and are properly trained for handling that gas.

Storage Requirements

State and local building and fire codes will apply to the installation and storage of compressed gases. The following information covers some of the major requirements for the storage of compressed gases.

• Store all cylinders in designated areas that are secured.
• Flammable, toxic and Oxygen (or any Oxidizer) shall be separated from each other by a distance of at least 20 feet, or by an non-combustible barrier at least 5 feet high having a fire resistance rating of at least one-half hour. Inert gases (Argon, Nitrogen, Helium, Carbon Dioxide), since they are chemically inert and compatible with all other gases, may be used within the separation distance.
• Outdoor storage shall be kept clear of dry vegetation and combustible materials for a minimum distance of 15 feet.
• Cylinders stored outside shall not be placed on the ground (earth) or on surfaces where water can accumulate.
• Storage areas shall be provided with physical protection from vehicle damage.
• Do not store cylinders near elevators, truck loading platforms, gangways, or under operating cranes, or other areas where they can be damaged by falling objects.
• Cylinders shall not be exposed to temperatures in excess of 125F.
• Smoking and open flames shall not be permitted in Oxygen and flammable gas storage areas or within 20 feet of such areas.
• Observe local codes limits set for the storage of flammable gases in buildings.

Hazards of Industrial Gases

There are certain properties, hazards and precautions associated with the major industrial gases, as well as mixtures of same. These gases are: Acetylene, Air, Argon, Carbon Dioxide, Helium, Nitrogen, Nitrous Oxide, Oxygen, and Propane. Each of these gases has at least one of the following hazards:

• High Pressure
• Extreme cold
• Asphyxiating (Inert)
• Oxidizing
• Flammable

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