R.I. Gen. Laws § 28-25-21: Local ordinances void.

(a) No city or town shall have the power to make any ordinance, bylaw, or resolution concerning, or to provide for the inspection, or to license the erection or installation of, any boiler or pressure vessel within the limits of the city or town. Any ordinance, bylaw, or resolution previously made or passed or concerning any of the above matters shall be void and of no effect.

(b) Any application made to municipalities shall be immediately forwarded for consideration and inspection to the division of occupational safety.

(c) No municipality shall issue a mechanical permit for work related to installation, repair, or alteration of any boiler or pressure vessel covered under this chapter until the application for the installation, repair, or alteration has been approved by the division of occupational safety where applicable.