R 408.11450 Roller conveyors.

Rule 1450. (1) A roller conveyor with a hinged section or with an open discharge end shall be equipped with a stop device projecting above the rollers which shall prevent a package or object from being discharged off the conveyor unless it is so designed to discharge. (2) Nip points between power and idler rolls or delivery conveyors and idler rolls shall be eliminated by 1 of the following: (a) The idler roller set in a 45 degree inclined slot in the direction of travel. (b) Steel plates welded between the rolls with a maximum of 1/8 inch between plate and rolls. (c) The idler roller set in a horizontal slot and connected with an interlock switch which will stop the conveyor. (d) A device which offers equal or better protection may be substituted for subdivision (a), (b), or (c) of this subrule. (3) The nip point between a belt and a carrier roller on a belt drive live roller conveyor shall be protected by pop-out type carrier rollers or steel plates as prescribed in subrule (2)(a) and (b) of this rule. The belt conveyor shall be guarded as specified in R 408.11442.