ABSTRACT
Errant or unplanned release of energy results in injury to workers or even death. Recently, there were three workers killed in one state from failure to lock out (block) energy from being released. They failed to block or support the raised bed of a dump truck. They had positioned themselves between the frame of the truck and the raised bed. The bed’s energy was released and came down on them, crushing life from them. This type of accident continues to happen every year. This is an example of the release of energy (see Figure 10.1).
