People who install or dismantle machinery and equipment could: • work in isolation • work on machinery and equipment at height, or over machinery and equipment to connect services, such as electricity, air or water • work in low light, or with bright directional light • access machinery and equipment from the top, sides or underneath • work with or near cranes, forklifts or rigging to lift machinery and equipment • work in confined spaces • use power tools, welders, extension leads, which present electrical hazards if damaged or wet.
Larger machinery and equipment may contain internal areas where a hazardous environment may occur by design, or as a result of the work being done. A confined space may exist where people require access to a mostly closed area that presents difficult or restricted path of access, where oxygen levels may be depleted or displaced, or where harmful levels of contaminate, such as gas, vapour or dust, exist.
They are assembled from a standardized type of components. These consist of mechanical elements that control the movement in various ways, such as, gear trains, transistor switches, belt or chain drives, linkages, cam and follower systems, brakes and clutches, and structural components such as frame members and fasteners.
Lower order machinery and equipment risk controls, such as personal protective equipment (PPE), can prevent injuries, but are generally not as effective as higher order controls, as they rely more on worker behaviour, maintenance programs and supervision.