- (a) Gears; sprockets; chains; drive, head, tail, and takeup pulleys; flywheels; couplings; shafts; sawblades; fan inlets; and similar exposed moving machine parts which may be contacted by persons, and which may cause injury to persons shall be guarded.
- (b) Overhead belts shall be guarded if the whipping action from a broken line would be hazardous to persons below.
- (c) Guards at conveyor-drive, conveyor-head, and conveyor-tail pulleys shall extend a distance sufficient to prevent a person from reaching behind the guard and becoming caught between the belt and the pulley.
- (d) Except when testing the machinery, guards shall be securely in place while machinery is being operated.