OAR 437-007-0740: Machine Exhaust Systems

(1) Machines must have an exhaust system maintained in good working order. (2) Machines must be equipped with a muffler of the type recommended by the machine manufacturer. (3) Exhaust pipes must direct the exhaust gases away from the operator. (4) Exhaust pipes must be insulated or located to protect employees from accidental contact with the pipes and must permit spark arrester clean out.