Product Manual

TYPICAL SOURCES OF STATIC ELECTRIC HAZARDS

DURING FUELLING

The following objects can accumulate a static electric charge

and cause an ignition spark in typical fuelling situations:

Ungrounded tanks/containers:

Any ungrounded fuel tank or container can accumulate a static

electric charge as a result of contact with other objects or

friction during transportation. This static electricity can

discharge as a spark to the grounded petrol dispenser nozzle

as the nozzle is first brought close to the tank/container at the

beginning of the fuelling process.

Flowing petrol:

Most people are not aware that petrol accumulates static

electric charge while flowing through a hose or pipe. This

charge then transfers to and accumulates in the gas tank or

container that is being filled. The total amount of charge

accumulation depends on the amount of gas pumped into the

container, the speed with which it is pumped, and whether or

not the tank/ container is grounded. If sufficient static electric

charge accumulates in the fuel tank or container during the

fuelling process, the tank/container may discharge a spark to