Mich. Comp. Laws § 408.662

Sec. 12. (1) Before a new carnival or amusement ride is erected, or whenever any additions or alterations are made that change the structure, mechanism, classification, or capacity of any carnival or amusement ride, the owner shall file with the department a notice of his or her intention and any plans or diagrams requested by the director. (2) After an addition or alteration is made under this section, the owner shall request an inspection from the department and the carnival or amusement ride must be inspected before the owner may operate the carnival or amusement ride.