(2) All new installations shall conform to generally accepted nationwide engineering standards. Conformity with the most recent edition of the Boiler and Pressure Vessel Code or the ASME Code shall be accepted as conformity with generally accepted nationwide engineering standards.

(3) The department shall promulgate regulations for installation and inspection of boilers which were in use in this State prior to the implementation of the statewide building code. The regulations must be based upon, and at all times follow, generally accepted nationwide engineering standards and practices and may adopt applicable sections of the Inspection Code of the National Board of Boiler and Pressure Vessel Inspectors.

(B) The regulations and any subsequent regulations promulgated by the department must be adopted pursuant to the Administrative Procedures Act.