I have provided safety consulting to many high hazard chemical and petrochemical operations since 1972. I have been to (and worked on) many refineries, chemical plants, ammonia plants, natural gas separation operations associated with upstream oil recovery, and gas accumulation operations (prior to pipeline distribution). I also worked on oil and gas extraction operations which used knock out pots to separate liquids and gasses. I have reviewed many process safety concerns associated with natural gas. I have also been involved in safety analysis of water “slug catchers” knock out drums that were upstream of compressors. If an incompressible liquid enters the suction of a reciprocating gas compressor, it will cause the compressor to self-destruct. These are common to many gas processing industries. A plant has an obligation to inform any contractors of any inherent dangers, to train their personnel in the general hazards of flammable liquids and gas tanks, and to inform and oversee the contractors use of any of the lockout, purging, and tagout of equipment. Petroleum products under pressure cause a difficult fire to control, and it creates an explosion hazard from vapor clouds and jet fires that have a tendency to cause the failures of adjacent vessels. Depending on the quantity released, the destruction zone can be many hundred feet. As an engineer in the process safety field, I am very aware of fires, and methodologies to mitigate losses.