Anti-static products and anti-static shoes reduce the danger of static electricity occasions
When static electricity is discharged, the presence of combustibles around it is the most basic condition for static electricity fire and explosion accidents. Therefore, controlling or eliminating combustibles in discharge occasions has become an important measure to prevent static electricity hazards.
1. Reduce the concentration of explosive mixtures in the air
Anti-static products and anti-static wipers
When the vapor of flammable liquid mixes with air and reaches the explosion limit concentration range, fire and explosion accidents will occur if they encounter a fire source. Therefore, reducing the concentration of explosive mixtures in the air is an effective measure to prevent accidents such as explosions and fires. Therefore, ventilation devices or exhaust ventilation devices can be installed in places with explosion or fire hazards to discharge explosive mixtures in a timely and effective manner, and the concentration of explosive mixtures can be controlled to be below the lower explosion limit or above the upper explosion limit to prevent static electricity sparks from causing explosions or fire accidents.
The amount of vapor explosive mixtures produced by evaporation of flammable liquids on their surfaces is closely related to temperature, so flammable liquids also have an explosion temperature limit problem. The explosion temperature limit is also divided into the lower explosion temperature limit and the upper explosion temperature limit. When the temperature is between this lower limit and the upper limit, the concentration of the vapor mixture produced by the evaporation of the liquid is just within the explosion concentration limit of the liquid. The lower limit of the explosion temperature of the liquid is the flash point of the liquid. Controlling the temperature within the explosion temperature limit is also a way to prevent explosions and fires caused by static electricity. However, the explosive mixture changes according to the characteristics, usage, usage conditions, and environmental conditions such as temperature, pressure and humidity of the combustible material. Therefore, the method of controlling the temperature cannot be used as a complete and effective measure.
2. Reduce the oxygen content or take forced ventilation measures
Limit or reduce the oxygen content in the air so that the combustible material does not reach the explosion limit concentration. Usually, when the oxygen content does not exceed 8%, the combustible material will not cause combustion and explosion. There are many ways to reduce the oxygen content. The commonly used method is to fill carbon dioxide, nitrogen or other inactive gases in the container of steam or dust.
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