Your Flammable Gas Safety Resource Center
Flammable Gas Safety Reminders
- Follow safe practices for the storage and use of flammable gases.
- Leak test cylinders, containers, and systems when making connections or if a leak is suspected.
- Provide adequate ventilation and atmospheric monitoring to ensure that safe atmospheres are maintained.
- Use appropriate personal protective equipment (PPE).
CGA eLearning Modules
CGA Free Safety Materials
- CGA SP-6, Safety Poster (Industrial), Separating Incompatible Gases
- CGA SP-8, Safety Poster (Industrial), Wear Recommended Personal Protective Equipment
Related Codes & Standards
Product Information: Flammable Gases
Flammable gases are generally defined by the U.S. Department of Transportation (DOT) and Transport Canada as those gases that form a flammable mixture when mixed with air in concentrations of 13% or less (by volume), or the flammable range with air is wider than 12% regardless of the lower limit. These limits are determined at a pressure of 14.7 psia (101.3 kPa, abs) and a temperature of 68 °F (20 °C). There can be other gases that exhibit flammable properties but do not meet DOT’s definition. The user shall always refer to the SDS of the gas for specific information on its hazards.
The major hazard associated with the handling of flammable compressed gases is fire. The three basic conditions that need to be met simultaneously to ignite a flammable gas are:
- concentration of the gas (fuel) within the flammable limits;
- air or an oxidizing gas; and
- source of ignition.