A1
“A” - Hazards that pose imminent danger to life or limb.
“B” - Hazards that have the potential for injury, but are less than an “A”
“C” - Hazards that have a potential for an incident or equipment damage with no severe consequences.
“1” - Exposed to hazard very frequently
“2”- Exposed frequently but not as frequent as a Class “1”
“3” - Exposed to hazard very infrequently