What is a struck-by hazard?
Struck-by injuries are produced by forcible contact or impact between the injured person and an object or piece of equipment. Having said that, it is important to point out that in construction, struck-by hazards can resemble caught–in or –between hazards. When the impact alone creates the injury, the event is considered as Struck. On the other hand, when the injury is created more as a result of crushing injuries between objects, the event is considered as Caught.
What are the common types of struck-by hazards in construction?
1. Struck-by flying object
Flying object hazard exists when something has been thrown, hurled, or is being propelled across space. It can include instances when a piece of material separates from a tool, machine or other equipment, striking a worker, resulting in injuries or fatality.
Also a hazard exists if an object is ejected under power by a tool or equipment usually designed for that purpose such as, a nail from a nail gun. Powder-actuated tools are particularly hazardous due to the force behind the fastener. Using compressed air can also cause flying object hazards. Compressed air is commonly used to power tools and clean surfaces.
2. Struck-by falling object
Falling object hazard exists when the source of injury is falling from an elevation to a lower level, including instances where the injured person is crushed, pinned, or caught under a falling object.
3. Struck-by swinging object
Swinging object hazard exists when the source of injury has been referred to objects which are not free standing, they are attached at some point or are being held by the worker.
When materials are mechanically lifted, they have the potential to swing and strike workers. As the load is lifted, the materials may swing, twist or turn. This movement can catch workers by surprise and they could be hit by the swinging load.
In addition to swinging, loads can slip from their riggings and strike workers. Loads must be rigged properly to prevent slippage.
4. Struck-by rolling object
Rolling object hazard exists when an object is rolling, moving, or sliding on the same level at which the worker is located. Includes instances in which the worker is struck or run over by a moving vehicle without being caught under it or instances in which the worker is struck-by a sliding object or equipment on the same level. (Cont’d)
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