For potentially harmful substance exposures from machinery and equipment, such as mist, fumes, vapour or dust, and where it is not possible to control the emission at its source, ventilation and extraction systems are used to remove the hazardous emissions from the work environment.
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.
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.
• Guarding may also serve to mute noise emissions through application of sound absorbing materials. Other emissions, such as lasers, ultraviolet light, bright light or welding flash, can also be safely screened to prevent potential harmful exposure.