As we all know, the dust in the coal mining industry is quite serious, especially the environment in coal mines is mostly bad, the ventilation conditions are very poor, and the pneumoconiosis is high. The selection of dust masks for the coal industry can effectively reduce the amount of dust inhaled, thereby reducing the incidence of pneumoconiosis and ensuring the safety of coal mine workers. So, how to properly wear the coal mine dust mask?
When selecting a dust mask, the type of mask selected for different job requirements and working conditions is different. The choice should first be based on the concentration and toxicity of the dust. All mine dust masks are suitable for environments where the concentration of hazardous substances does not exceed 10 times the occupational exposure limit, otherwise a full face mask or a higher degree of respirator should be used.
If the particulate matter is highly toxic, carcinogenic, and radioactive, the filter material with the highest filtration efficiency should be selected. If the particles are oily, be sure to select the appropriate filter material. If the particulate matter is acicular fibers, such as slag wool, asbestos, glass fiber, etc., since the dust mask cannot be washed, the mask sealing portion of the mask with fine fibers is liable to cause facial irritation and is not suitable for use. If you are in a high temperature, high humidity environment, then choosing a mask with an exhalation valve will be more comfortable.
After choosing a mask that suits you, the next step is how to wear a mask. Although the dust mask structure is simple, it is not easy to use. Choosing the right and suitable mask is only the first step in protection. To protect it, it must be used correctly. In addition to ensuring that each position is correct (no leakage), you also need to wear it in the dust-collecting operation, find the signs of failure of the mask in time, and replace it in time. The entire mask should be discarded when any part of the dust mask is damaged, broken and lost (such as nose clips, nose clips), and if the respiratory resistance is noticeably increased.
In addition, no matter whether it is anti-virus or dustproof, any filter element should not be washed, otherwise the filter element will be destroyed. The outer layer of the dust mask of the coal mine often accumulates a lot of dust, bacteria and other pollutants in the outside air, while the inner layer blocks the exhaled bacteria and saliva. Therefore, the two sides cannot be used alternately, otherwise the dirt contaminated by the outer layer will be Inhaled into the body directly against the face, and become a source of infection. When the mask is not worn, it should be folded into a clean envelope and folded in a side that fits snugly against the nose and mouth. Do not hang it in the pocket or hang it around your neck.
According to statistics, 80% of China's pneumoconiosis patients are coal workers' pneumoconiosis. The incubation period of the disease is more than 10 years, which poses a great threat to the life safety of coal miners. Therefore, coal miners must strictly follow the country when working underground. The standard choice is to wear a suitable dust mask.
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