R 408.11424 Hinged sections.

Rule 1424. (1) A manually operated hinged section for employee passage through a gravity roller conveyor, chute, belt, or other type of conveyor that requires more than a 40-pound lifting effort to operate shall be counterbalanced. (2) A power operated section for employee passage shall be provided with a mechanical safety device which shall prevent the section from falling in case of power failure. (3) A power conveyor having a hinged section used for the purpose of clearing a passageway shall be designed so that the section cannot be raised while the conveyor is in operation or the material being conveyed shall be stopped when the section is raised.