Confined Space Entry Hazardous Substances In Refineries Hazards of Air and Oxygen Hazards of Electricity and Static Electricity Hazards of Nitrogen and Catalyst Handling Hazards of Steam Hazards of Trapped Pressure and Vacuum Hazards of Water Hotel Fire Safety Liquid Hydrocarbon Tank Fires Safe Handling of Light Ends Safe Furnace and Boiler Firing Safe Tank Farms and (Un)loading Operations Safe Ups and Downs for Process Units Control of Work