Conditions for fire and explosion caused by static electricity
Fire and explosion are caused under certain conditions, and explosions caused by static electricity are generally combustion explosions. Therefore, the conditions for explosions and fires caused by static electricity can be summarized as follows: ①The conditions for generating electrostatic charge; ②The ability to generate spark discharge Voltage; ③There is a suitable gap that can cause spark discharge; ④There is an explosive mixture in the field environment; ⑤Enough energy for the discharge spark. Eliminating any of the five conditions can avoid accidents. From the perspective of preventing static electricity fire and explosion, the main means of controlling static electricity accumulation is generally. For some places where static electricity cannot be eliminated, the purpose of preventing static electricity fire accidents can also be achieved by preventing the generation of explosive mixtures.
The prerequisite for the release of electrostatic spark energy to cause a fire and explosion accident is that the electrostatic spark energy is greater than the minimum ignition energy of the explosive mixture.
Once the electrostatic
spark energy is concentrated released, most mixed explosive systems can be
detonated. Although the concentration of energy release varies with different
discharge methods, the control of this concentration is difficult to control,
so we can easily cause the accumulation of static electricity and the existence
of explosive The place or part of the mixture is used as a dangerous place or part
to prevent electrostatic fire and explosion.