In this position, a worker could be fatally crushed should the bed lower unexpectedly. Workers place themselves in potentially fatal situations when they move between a raised dump bed and the frame of the truck or trailer to complete maintenance or repairs or to check a problem. It is important not to jack-knife a truck and trailer, because doing so creates the potential for the cab to be crushed should the trailer tip. If the bed is raised too quickly, the rearward shift of the load could damage the lift mechanism or cause the trailer and truck to tip over.
When filling the truck or dump trailer, evenly distribute the contents to maintain proper flow and prevent the load from shifting during unloading. When emptying, raise the bed slowly and allow the contents to slide slowly toward the rear. The longer the trailer, the more surface area is exposed to high winds, placing lateral pressure on the trailer and creating the potential for a tipping incident. Additional hazards that can increase the risk of a tipping incident include wind, loads that are not centered, and jack-knifed trailers. Even if a dumping area is relatively flat, a tipping incident could occur if a slope is created by low tire pressure on one side or one set of tires sitting in a low area or a depression. Operators need to understand that a dump truck or trailer is at a risk for a tipping incident when the bed is raised because raising the bed changes the truck’s center of gravity. Emptying a LoadĪnytime the bed of the truck or trailer is raised, it places workers at risk unless hazardous situations are controlled or eliminated. The most common dump truck or trailer incidents occur when emptying a load, when a bed is lowered unexpectedly, or when a raised bed contacts overhead power lines. All trucks or trailers with dumping capability use a hydraulic hoist to dump their loads (grain, sand, gravel, and so on). In addition to large trucks and trailers, farmers and ranchers use semitrailer end dump trucks, pup trailers, truck and grain trailers, and regular or long-bed straight trucks. įarmers and ranchers use dump trucks and trailers to transport large amounts of grain and silage between farms or to market, making it cost-effective for many agricultural operations. (2014) Farm and Ranch eXtension in Safety and Health (FReSH) Community of Practice. Use the following format to cite this article:ĭump truck and trailer safety.
(Source: Penn State Agricultural Safety & Health)
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