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WARNING!
If you feel an explosion hazard exists:
• Arrange for evacuation of people in the area
• Call proper authorities from a safe location
• Shut off gas source is possible
• Ventilate enclosed areas if possible to do so
without risk of ignition
• DO NOT switch power switches on in area of
question
As a matter of routine, ventilate the area you plan to
work in. Ventilation will help ensure the gas does
not accumulate in large volume where it can attain
its Lower Explosive Limit (LEL)*
LEL: Lower Explosive Limit - The point at which a
combustible gas, when mixed with air, has
developed the minimum concentration to combust
when exposed to a source of ignition. The LEL is
usually stated as a percentage of gas in air, as a
fuel-air-ratio, or as parts-per-million (PPM) in a
