Hazard class:

Gases are classified based upon their chemical and physical hazards. Personnel handling or using compressed gases, or working in areas where they are exposed to gas containers, shall have an adequate knowledge of the container contents to maintain safe operating conditions.

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Gases can represent a hazard because they are:
• Flammable
• Asphyxiate (inert)
• Oxidizing
• Corrosive
• Toxic
• Extremely cold (cryogenic)
Note: Some gases can combine several of these hazards in one cylinder.

Transporting gas cylinders:

 

Cylinders transported by truck must be fastened securely in an upright position so that they will not fall or strike each other.

Cylinders should not be transported without safety caps. A cylinder’s cap should be screwed all the way down on the cylinder’s neck ring and should fit securely. Do not lift cylinders by the cap. The cap is for valve protection only.

Cylinders should not be transported with the regulator attached to the cylinder.

Always use a cylinder cart to move compressed gas cylinders. Refrain from sliding, dragging or rolling cylinders on edge.

Only one cylinder should be handled (moved) at a time.

Storage of Compressed Gas Cylinders:

 

 

Cylinders should not be allowed to drop nor be struck violently.

Cylinders should be properly secured at all times whether attached to a wall, cylinder truck, cylinder rack, or post.

Liquefied flammable gas cylinders should be stored in an upright position or such that the pressure relief valve is in direct communication with the vapor space of the cylinder.

Caps used for valve protection should be kept on the cylinders at all times except when the cylinder is actually being used or charged.

Cylinders should not be used for rolling, supports, or any purpose other than the transportation and supply of gas.

Cylinders should be stored in a well-ventilated area away from flames, sparks, or any source of heat or ignition. Keep cylinders away from electrical circuits.

Cylinders should not be exposed to an open flame or to any temperature above 52°C.

Oxygen cylinders (empty or full) in storage should be separated from fuel-gas cylinders and combustible materials by a minimum distance of 5 m or by a barrier at least 1.5 m high having a fire-resistance rating of at least one-half hour.

Flammable gas cylinders should not be stored with oxygen or nitrous oxide cylinders or adjacent to oxygen charging facilities.

Full and empty cylinders of all gases should be stored separately and identified by signs to prevent confusion.

Cylinders may be stored outdoors but should be protected from the ground to prevent bottom corrosion. Where extreme temperatures prevail, cylinders should be stored so they are protected from the direct rays of the sun.

Cylinders should not be exposed to continuous dampness, stored near salt or other corrosive chemicals or fumes. Corrosion may damage cylinders and cause their valve protection caps to stick.

Do not charge, ship, or use any cylinder which is not provided with a legible detail that identifies its contents.

Use of Compressed Gas Cylinders:

 

Know and understand the properties, uses, and safety precautions of the gas before using the cylinder.

Always use the proper regulator for the gas in the cylinder. Always check the regulator before attaching it to a cylinder. If the connections do not fit together readily, the wrong regulator is being used.

Before attaching cylinders to a connection, be sure that the threads on the cylinder and the connection mate are of a type intended for the gas service.

Do not permit oil or grease to come in contact with cylinders or their valves.

Wipe the outlet with a clean, dry, lint-free cloth before attaching connections or regulators.. The threads and mating surfaces of the regulator and hose connections should be cleaned before the regulator is attached.

Attach the regulator securely before opening the valve wide. Always use a cylinder wrench or another tightly fitting wrench to tighten the regulator nut and hose connections.

Open cylinder valves SLOWLY. Do not use a wrench to open or close a hand wheel type cylinder valve. If it cannot be operated by hand, the valve should be repaired. – Stand to the side of the regulator when opening the cylinder valve.

Do not attempt to repair cylinder valves or their relief devices while a cylinder contains gas pressure. Tag leaking cylinders or cylinders with stuck valves and move to a safe, secure outdoor location.

Close valves of empty cylinders.

Things Not To Do:

 

Never roll a cylinder to move it.

Never carry a cylinder by the valve.

Never leave an open cylinder unattended.

Never leave a cylinder unsecured.

Never force improper attachments on to the wrong cylinder.
Never refill a cylinder.

Never use a flame to locate gas leaks.

Never attempt to mix gases in a cylinder.

Never discard pressurized cylinders in the normal trash.

Never grease or oil the regulator, valve, or fittings of an oxygen cylinder.