What distance must fuel supply cylinders be from the exhaust system?

The correct answer highlights the importance of maintaining safety and preventing potential hazards associated with compressed natural gas (CNG) systems. Fuel supply cylinders must be installed at a minimum distance from the exhaust system to avoid the possibility of heat transfer. High temperatures from the exhaust can pose a risk of compromising the integrity of the fuel supply cylinders, potentially leading to leaks or even catastrophic failures.

By specifying a distance of less than 8 inches, this regulation ensures that adequate space is maintained to minimize any risks associated with excessive heat exposure, which could adversely affect the performance and safety of CNG equipment.

In this context, the other distance options do not comply with the safety standards required for fuel systems in CNG applications. A greater distance promotes better safety practices and contributes to the overall reliability and longevity of the fueling infrastructure.