WAC 296-806-42028: Guard nip points on belt conveyors. The practice of applying a belt dressing or other foreign material to a rotating drive pulley or a conveyor belt is hazardous and should be avoided.
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Safety Guards For Conveyors - greenrevolution.org.in
WAC 296-806-42028: Guard nip points on belt conveyors. This rule does not normally require guards along the conveyor at the point where the belt rides on return rollers, such as return-belt idlers, unless hazardous...