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P – Pull The Pin ( Pull the pin from the extinguisher ) A – Aim ( Aim at the base of fire by pointing the extinguisher nozzle at the base of fire ) S – Squeeze ( Squeeze the handle of the extinguisher ) S – Sweep ( Sweep from side to side at the base of the fire until it appear to be out ) Looking for the definition of PASS? Find out what is the full meaning of PASS on Abbreviations.com! 'Personal Alert Safety System' is one option -- get in to view more @ The Web's largest and most authoritative acronyms and abbreviations resource. Get PASS full form and full name in details. Visit to know long meaning of PASS acronym and abbreviations. It is one of the best place for finding expanded names. Learn the basics of fire safety & how to properly use a fire extinguisher by following the P A S S method.