what is the chance of accumulation of the static electricity on the road tankers of petroleum is taken care?
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Answer:
How static electricity is generated onboard a chemical tanker?
Static electricity is generated by friction that occurs between different materials during relative motion. Electrostatic charges can then accumulate in materials which are poor conductors of electricity or which are good conductors but are insulated. If two such bodies with accumulated static electricity charges are brought close together, and if the difference of potential is great enough, the accumulated charge will jump between them.
Anyone who has received a mild shock when touching a doorknob after walking across a carpeted room has experienced such a phenomenon. In such cases the individual has become charged by friction between the carpet and the soles of the shoes and the potential accumulated in the body is discharged to the knob. This, though annoying, is harmless. But if a strong discharge of static occurs as a spark where a flammable atmosphere is present, there is a risk of igniting the atmosphere.