Power Sources
The two main power sources for powered industrial trucks are:
- internal combustion, which uses a traditional engine that runs on liquid petroleum gas (LPG), compressed natural gas (CNG), gasoline, diesel, or other fuel; and
- electric, which uses an on-board battery.
Other power sources that may become more widespread in the future include fuel cells and hybrid systems. Hydrogen fuel cells will have zero emissions and quiet operation plus the ability to be refueled as quickly as gasoline engines. Hybrid systems will use a combination of fuel cells and batteries.
Liquid Petroleum Gas
Liquid petroleum gas (LPG) is a commonly used fuel for forklifts. It is a safe fuel when handled properly. When handled improperly, it can cause serious injury or death.
Forklift Fuel Filling
Below is a list of important points to remember about using LPG forklifts:
- LPG vapor is heavier than air and will seek the lowest lying area. If not adequately dissipated, it will collect in pockets and possibly ignite when exposed to a heat source.
- LPG is extremely flammable.
- LPG is extremely cold when exposed to the atmosphere. If your skin is exposed to LPG, you can get frostbite.
- Do not refuel LPG-powered trucks in confined areas where LPG vapors could collect if a leak occurs.
- Do not leave LPG-powered trucks near heat sources, stairways, exits, or other egress areas.
- When parking LPG-powered trucks for a long period of time, turn the service valve off.
- Only trained and authorized personnel should replace LPG containers.
- Follow proper procedures for storing and handling liquid petroleum gas.
Knowledge Check Choose the best answer for the question.
1-8. The two main power sources for powered industrial trucks are ____ and _____.
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