Why is the bottom of the tanker dragging a chain?
The oil in the tank is prevented from generating static electricity and the oil tank explodes. The iron chain is used to lead the static electricity into the earth
The basic way to prevent electrostatic hazards is to guide the electric charge as soon as possible, so as to avoid the accumulation of static electricity. The simplest and most reliable way is to introduce electricity into the earth. The tanker is guided by a chain that is drawn to the ground.
Designed to contain liquid fuels such as gasoline or diesel oil tanker, oil filling, in the process of transportation, oil and oil friction, impact and bring a lot of charge, if not promptly take the lead, accumulated to a certain extent, will produce spark ignited, causing an explosion of liquid fuel. On the hospital's operating table, there were also incidents of electrostatic sparks that exploded the ether.
