(1) In addition to the state boiler inspectors, the department shall issue to the inspectors of boiler insurance companies authorized to do business in the state commissions, certificates, or other recognition as special boiler inspectors and may accept the inspection reports of such special inspectors as equivalent to those of the state inspectors.
(2) Each such special inspector shall hold a certificate as boiler inspector issued by the national board of boiler and pressure vessels inspectors.
(3) Such special inspectors shall receive no salary or expenses from the state, nor shall the state collect inspection fees for inspections made by such special inspectors.