Chemical hazardous substances classification

Under normal circumstances, there are nine aspects of fire and explosion accidents.
(a) Improper use of fire management. Irrespective of the production of fire (such as welding, forging, casting and heat treatment processes), or the use of fire (such as smoking, use of stoves, etc.), the fire source is poorly managed.
(2) The management of flammable materials is not good, the warehouses do not meet the fire protection standards, and they are not classified according to the nature of the materials. For example, chemicals that are in conflict with each other are put together, fire extinguishing requires that different substances be put together, and substances that burn with water are placed in wet locations.
(3) Insufficient insulation of electrical equipment, installation does not meet regulatory requirements, short circuit, overload, excessive contact resistance, etc.
(4) The technics layout is irrational. Inflammable and explosive places have not taken corresponding fireproof and explosion-proof measures. The equipment lacks maintenance and inspection, or the quality of repairs is poor.
(5) Violation of the safety operation procedures, overheating and overpressure of the equipment, or illegal use of flammable liquids such as gasoline or illegal use of flammable liquids in places with flammable or explosive locations.
(6) Poorly ventilated, flammable vapors, gas or dust in the production site reach explosion concentrations in the air and encounter fire sources.
(7) Improper installation of lightning protection equipment, lack of overhaul or lightning protection devices, and fire caused by lightning strikes.
(8) Equipment pipelines in flammable and explosive production facilities have not taken measures to eliminate static electricity and sparks have occurred.
(9) improperly placed cotton yarn, tarpaulin, oil-stained iron scraps, etc., and spontaneously ignite and catch fire under certain conditions.

China Labor Insurance Network