This standard applies to the construction, installation, operation, inspection, and maintenance of scrap handlers consisting of a base, a revolving upper structure with operator's station(s), and a front for lifting scrap or materials using attachments such as magnets and grapples, and any variations thereof in which the equipment retains the same fundamental characteristics. The provisions included in this standard apply to scrap handlers that are crawler mounted, rail mounted, wheel mounted, or on pedestal bases. The scope includes only handlers used to lift, lower, and swing scrap and material at various radii, which are powered by internal combustion engines or electric motors, and which are operated hydraulically. Hydraulic excavators designed for digging and trenching, forestry machines, machines designed for demolition, lattice and telescopic boom cranes, rail-mounted cranes for railway and automobile wreck clearance, and equipment covered by other B30 standards are excluded.