Ohio Rev. Code § 4104.32: Operating historical boiler in place open to public.

Except as provided pursuant to section 4104.37 of the Revised Code, no person shall operate a historical boiler in this state in a place that is open to the public unless both of the following requirements are satisfied:

(A) The person operating the boiler is licensed under section 4104.35 of the Revised Code.

(B) The owner of the boiler holds a current valid certificate of operation for the historical boiler pursuant to section 4104.36 of the Revised Code.