Section R. 408.15343 - Brush chippersRule 5343.
(1) A brush chipper shall be equipped with a locking device on the ignition system which shall be kept locked with the key removed when the chipper is unattended.(2) Access panels for maintenance and adjustment shall be closed and secured before the equipment is operated.(3) The infeed hopper or table of a chipper shall be of such design as to prevent an employee reaching the rotor blades or knives during normal operation.(4) A trailer type chipper, when detached from a vehicle shall be chocked or otherwise secured.(5) Flap type guards, designed to prevent kickback of chips, shall be installed at the feed opening of a chipper.(6) A chipper rotor shall be blocked from turning when performing maintenance on the rotor.Mich. Admin. Code R. 408.15343