Machinery and equipment have moving parts. The action of moving parts may have sufficient force in motion to cause injury to people. When assessing machinery and equipment for possible mechanical hazards, consider: machinery and equipment with moving parts that can be reached by people; machinery and equipment that can eject objects (parts, components, products or waste items) that may strike a person with sufficient force to cause harm; machinery and equipment with moving parts that can reach people, such as booms or mechanical appendages (arms); mobile machinery and equipment, such as forklifts, pallet jacks, earthmoving equipment, operated in areas where people may gain access.
They are machines or major tools necessary to complete a given task. They are items which are essential for the development of any structure from its initial stage till the final stage. They comprise of any appropriate set of tools required to generate the machine.
Accidental start-up, or movement of a machine mechanism, can occur: • if control levers or buttons are bumped or knocked • if a short circuit of the control system occurs • when hydraulic or air pressure is released • when undoing retaining bolts. The word machine is derived from the Latin word machina. The modern meaning of the word is influenced due its specialized application in the military siege engines. They are also used in the stage engines, which are used in theater.
Adjustable guarding incorporates movable sections or panels of the guard and allows for material or parts to be fed into the guarded area while still preventing bodily contact. Tunnel guards provide a tunnel, aperture or chute in which material can be inserted into the machinery and equipment, but due to the restrictive design and depth of the opening, fingers, hands, arms, or the entire person is prevented from intruding into the danger area.