Contents
What prevents static electricity discharge on the fuel tank?
To avoid static electricity discharge, all equipment must be bonded. If UL listed equipment is not used, it is necessary to attach a bonding wire from shoreside piping to both the nozzle and the tank being filled.
What causes static discharge?
Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged. The rubbing of certain materials against one another can transfer negative charges, or electrons.
What happens when static is discharged?
Definition of ‘static discharge’ Static discharge occurs when two charged surfaces pass over each other and a sudden recombination of the separated positive and negative charges creates an electric arc. Static discharge is the release of static electricity when two objects touch each other.
What does it mean to discharge static electricity at the gas pump?
Static electricity — common in cold, dry conditions — can create a spark when the driver touches the fuel nozzle. In rare circumstances, the static spark can ignite gasoline vapors, causing a flash fire.
How do I discharge my gas before static?
∎ Discharge your static electricity before fueling by touching a metal surface away from the nozzle. ∎ Do not re-enter your vehicle while gasoline is pumping. ∎ If a fire starts, do not remove nozzle – then back away immediately.
What causes a build up of static charge when filling up a car with fuel?
Static electricity may build up when a motorist re-enters the vehicle during fueling. When the motorist then returns to the vehicle fell pipe during or at the end of refueling, the static may discharge at the fill point, potentially causing a flash fire or a small-sustained fire with gasoline refueling vapors.
What causes static electricity in a fuel tank?
There is an ignitable vapor-air mixture in the spark gap. Common tank problem areas— Following is a discussion of common static electricity problem areas found in marketing distribution and aviation fuel handling facilities, and precautions to be taken for storage tanks, containers and vehicles.
What should I know about diesel static charge risks?
Make sure your diesel fuel tanks are grounded to head off higher static ignition risks of low-sulfur diesel especially tanks on truck bed liners. You’ve made the switch to ultra-low-sulfur diesel fuel. And because of it, your diesel-powered tractors and trucks are burning clean fuel.
What happens when a fuel tank is charged?
Further, when the charged stream enters a container, charge separation occurs and will be induced on the tank wall. As a result, once a means of generating an electrostatic charge exists, it will be a source of ignition under the following three conditions: 1. The accumulated electrostatic charge can produce an incendiary spark. 2.
When is the greatest risk of static electricity discharge?
The risk of static electricity discharge is greatest when the nozzle is being removed from the tank being filled. All dispensing equipment including pumps, hoses and nozzles must be Underwriters Laboratories(UL) listed for the intended usage.