View Full Version : Gas-Powered Boat, Engine Manufacturers to Comply with New EPA Emission Standards

09-16-2008, 02:35 PM
Gas-Powered Boat, Engine Manufacturers to Comply with New EPA Emission Standards

After a decade of collaboration with NMMA, the Environmental Protection Agency (EPA) issued new emissions regulations for gas-powered boat engines and boat fuel systems. Since 1999, NMMA has participated in a number of projects to represent members in this rulemaking process, including a NTE test program, a SwRI Catalyst Test Program, a Fuel Hose Permeation Test Program, an ATL SHED Test and an In-Boat Carbon Canister Test Program.

The new regulations mean gasoline outboard, personal watercraft and stern drive inboard engine manufacturers will basically be required to meet California emission standards. This will also be the first time gasoline marine engines will be required to meet a carbon monoxide standard. For boat builders, these new emission regulations will require the fuel system to meet both permeation and diurnal emission reductions.

The new standards require that fuel systems:
• Accommodate low permeation fuel lines and low permeation plastic fuel tanks
• Include carbon canisters used to capture fumes from open fuel vents and
• Prevent fuel from spitting back during fueling

Learn more about the EPA ruling at a session titled “Boat Fuel Systems Design and Compliance (Session 309)” at the International BoatBuilders’ Exhibition and Conference (IBEX) on Tuesday October 7, 2008 from 8:30 am to 10:00 am. Following IBEX, NMMA will develop a series of Evaporative Emission seminars in key boat manufacturing states, similar to sessions conducted following the implementation of the Maximum Achievable Control Technology (MACT) standard.