Safety Expert for Oil Storage & Transportation

Home / News / Popularization of professional knowledge /

Conditions for fire and explosion caused by static electricity

Conditions for fire and explosion caused by static electricity

Issue Time:2021-07-12
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: The conditions for generating electrostatic charge; The ability to generate spark discharge Voltage; There is a suitable gap that can cause spark discharge; There is an explosive mixture in the field environment; Enough 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.