Use of steel drum coating thinner should pay attention to safety

Thinner is the most widely used colorless transparent liquid in steel drum coating production. Because it emits a floral odor, people often call it "banana water." In fact, its official name is thinner or thinner, solvent oil. . Drum paint used for steel drums generally needs to be diluted with thinner materials before it can be used. Some people, due to their lack of understanding of the characteristics of thinners, often cause fires or explosions due to improper use.

The thinner material is insoluble in water and is a direct fraction of petroleum. Like gasoline, it is a flammable and explosive dangerous product. In the process of transportation, use, and storage, if the safety management of thin materials is neglected, it is easy to cause fire and explosion accidents. The freezing point has a freezing point of minus 116°C, a boiling point of 34.6°C, a flash point of minus 45°C, and an explosion limit of 1.85-36.5%. The thin material is highly volatile, and the oil and gas volatilized in a short time can spread to several meters or even several ten meters. If it encounters a fire, it can catch fire. When the oil and gas fires, the flame will flash back in the opposite direction of the gas flow, causing intense large-area combustion. If oil and gas are mixed with air in a relatively tight room or vehicle and reach a certain percentage, it can cause a strong explosion and cause heavy losses.

Another characteristic of thinners is that they are highly insulating and are prone to static electricity. If you use plastic drums to dilute the material, it can generate up to 15,000 volts of static electricity inside after repeated shaking. Once it is discharged, it can cause fire. Inevitably, the thinner material has a softening effect on the plastic. If the material is too thin for a long time, the plastic will soften the break and leak out of the thinner material, so the possibility of a fire is even greater.

Since the thinner material is a flammable and explosive dangerous product, the concentration of oil and gas in the air should be strictly controlled at the place where the thinner material is used, and must not exceed 0.3 mg/L. Once oil and gas are found to be excessive, measures should be actively taken to strengthen ventilation and reduce the concentration so that it cannot reach the explosion concentration limit. When transporting thinner materials, they must not be handled arbitrarily and should be gently loaded and unloaded to prevent friction and shocks. When transporting by car, metal chain should be installed at the tail of the tank to ground to remove static electricity and prevent fire. In places where the use and storage of thinner materials are used, there shall be no fire source, and the installed electrical equipment must be fireproof and explosion-proof. Do not use plastic buckets for loading thinner materials and use metal containers. It is not advisable to use plastic tubes for conduits conveying thinner materials. Metal conduits must have good grounding measures. When using thin materials to clean the painting tools, care should be taken to prevent static electricity from friction and cause fire.

Sufficient fire extinguishing equipment, such as dry powder, carbon dioxide, haloalkan fire extinguisher, etc., shall be provided in the transport vehicle, storage and use areas. In case of a rare fire, water should not be used. Only chemical extinguishing agents can be used to save fire. When the fire extinguishing agent is not enough, sand can also be used to save.