16VAC25-40-40: Exemptions from certification

A. Exempt from certification are operators of:

1. Boilers and pressure vessels on boats or vessels operated under the regulations of the Marine Inspections, U.S. Coast Guard;

2. Steam driven vehicles used solely for traction or show purposes;

3. Hot water heating boilers having total boiler horsepower not exceeding 100 boiler horsepower;

4. Low pressure steam boilers having gravity or trap returns; and

5. Nuclear plant facilities under the control of the Nuclear Regulatory Commission.

B. Notwithstanding exemptions listed above, no provision here shall be construed as authorizing or permitting operation of a boiler without a valid and unexpired certificate, where an ordinance requiring such a certification has been adopted.