North Star 296020 Owner's Manual
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Contents
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Special Safety Information on Static Electricity29Static electricity and filling gasoline:Static electricity can initiate from ungrounded gasoline tanks or containers, from flowinggasoline, and from persons carrying a static electric chargeStatic electricity on numerous occasions has explosively ignited gasoline vapors that were present duringfueling processes, resulting in serious burns to nearby persons. To avoid static electricity while fueling,certain steps must be followed before and during the fueling process in order to minimize and safelydissipate static charge build-up.Filling Portable Containers at Service Stations:Use a portable container to fill grinder tank. Never fill the grinder's gas tank directly from the servicestation's fuel dispenser pump – the grinder's tank is not grounded and the high velocity flow of gasolinefrom a fuel pump can cause static electric build-up. Use an approved portable container to transfergasoline to the grinder's tank. Use a portable container made of metal or conductive plastic. It will dissipate charge to groundmore readily. Fill container on the ground. Never fill the portable gas container while it is sitting inside avehicle, trailer, trunk, or pick-up truck bed. ALWAYS place container on the ground to be filled. Touch a grounded metal object before starting. Always dissipate static charge from your bodybefore beginning the fueling process by touching a grounded metal object at a safe distance awayfrom fuel sources. Keep nozzle in contact with container. Keep fuel dispenser nozzle in contact with the portablecontainer at all times while filling at a service station. Do not use the nozzle lock-open device onthe dispenser hose.About static electricity and fuelingMany common objects can accumulate and retain a static electric charge. Objects made of non-conductive materials (e.g. plastics) easily accumulate and retain static electric charge, as can objectsmade of conductive material (e.g. metal, water) if they are not electrically grounded. The static electriccharge on an object, such as a human body or plastic fuel tank/container, can reach as high as severalthousand volts!A static electric spark can be generated if the static electric charge stored on an object “jumps” toanother, less charged object. Such a spark can ignite invisible gasoline vapors that are present duringfueling situations.Typical sources of static electric hazards during fuelingThe following objects can accumulate a static electric charge and cause an ignition spark in typicalfueling situations: Ungrounded tanks/containers. Any ungrounded fuel tank or container can accumulate a staticelectric charge as a result of contact with other objects or friction during transportation. This staticelectricity can discharge as a spark to the grounded gasoline dispenser nozzle, as the nozzle is firstbrought close to the tank/container at the beginning of the fueling process. Flowing gasoline. Most people are not aware that gasoline accumulates static electric charge whileflowing through a hose or pipe. This charge then transfers to and accumulates in the gas tank orcontainer that is being filled. The total amount of charge accumulation depends on the amount of gaspumped into the container, the speed with which it is pumped, and whether or not the tank/containeris grounded. If sufficient static electric charge accumulates in the fuel tank or container during thefueling process, the tank/container may discharge a spark to the grounded gasoline dispenser nozzle. Persons. A person dispensing the gasoline can carry a static electric charge on their body, typicallyresulting from contact with their car seat or electronics. The static electricity can discharge as aspark between that person's hand and either the grounded dispenser nozzle or the fuel tank opening. |
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