2 Colo. Code Regs. § 405-2-209
Current through Register Vol. 48, No. 1, January 10, 2025
Section 2 CCR 405-2-209 - VENTILATIONTANK AND ENGINE SPACES1. All motorboats, using a fuel having a flashpoint of 110 degrees F or less, except those of open construction, shall have at least 2 ventilator ducts, fitted with cowls or their equivalent, for the efficient removal of explosive or flammable gases from the bilges of every engine and fuel tank compartment. There shall be at least one rear facing cowl, or its equivalent, with exhaust duct installed so as to extend from the open atmosphere to the lower portion of the bilge and at least one forward facing cowl or its equivalent with intake duct installed so as to extend to a point at least midway to the bilge or at least below the level of the carburetor air intake. The cowls or equivalent to cowls shall be located and trimmed for maximum effectiveness and in such a manner so as to prevent displaced fumes from being recirculated.2. As used above, the term "open construction" means those motorboats wherein all engine and fuel tank compartments, along with other spaces to which explosive or flammable gases and vapors may flow, are open to the atmosphere and so arranged as to prevent the entrapment of such gases and vapors within the vessel.3. Power ventilation systems are preferable over natural ventilation systems. Exhaust blowers shall be of the sealed or arcless type and if located within the compartment being ventilated be as high as possible. Blower fan blades or impellers shall be non-sparking and if installed on the exhaust duct of the natural system shall not interfere with the functioning of the ducts as natural ventilators.4. Motorboats built after July 31, 1979, are exempt from the requirements of #209- 1 for fuel tank compartments that contain fuel tanks that vent to the outside of the vessel if the fuel tank compartment does not contain an electrical source of ignition.5. Every motorboat built after July 31, 1980, that utilized gasoline engines for electrical or mechanical power as propulsion must comply with U.S. Coast Guard ventilation standards. The operator must maintain the ventilation system in working order.37 CR 19, October 10, 2014, effective 11/1/201438 CR 07, April 10, 2015, effective 5/1/201539 CR 03, February 10, 2016, effective 3/1/201639 CR 07, April 10, 2016, effective 5/1/2016