Notes:
1 - Flash Point – minimum temperature a fuel must be heated before it will ignite
2 - Flammable Range (Lean/Rich) – when there is an appropriate fuel/air mixture for combustion I.e. not too lean (too little fuel), not too rich (too much fuel)
3 - LEL/UEL (LFL/UFL) – Lower Explosive (Flammability) Limit / Upper Explosive (Flammability) Limit. These are the upper and lower limits of the Flammable Range.
4 - Ignition Temperature – How hot the ignition source has to be – usually higher than the flash point.
5 - Flammable vs. Combustible liquids – Flammable liquids have flash points less than 100F for OSHA rules, 140F for DOT rules, and 140F for EPA Hazardous Waste rules (EPA uses the term “ignitable” instead of “flammable”). Combustible liquids have flash points higher than those. Flammable liquids are at or above flash point at normal/ambient temperatures.
6 - Bonding and Grounding – refers to procedures to dissipate static electricity during handling or transfer of flammable/combustible liquids. Bonding means to electrically bond 2 containers. Grounding means to electrically connecting them to ground.