What is the primary purpose of the FDNY CoF for the use of LPG or CNG in engine fuel systems?

The primary purpose of the FDNY CoF for the use of LPG or CNG in engine fuel systems is to ensure safe and compliant installation, operation, and maintenance of these systems. This focus on safety is crucial because both liquefied petroleum gas (LPG) and compressed natural gas (CNG) can pose risks if not handled correctly. The guidelines established aim to mitigate hazards associated with flammable gases, including fire and explosion risks, thereby protecting both personnel and property.

The emphasis is on creating standards that help prevent accidents and ensure that all operational practices conform to safety regulations. This is essential not only for compliance with local laws but also for maintaining the overall integrity and reliability of fuel systems used in various vehicles. Such guidelines help in training personnel, ensuring that they follow best practices when working with these alternative fuels, thus fostering a safer environment.

While the other options present valid concepts, they do not align as closely with the primary focus of the CoF. Vehicle design, fuel efficiency, and pricing structures are important in broader discussions about LPG and CNG use in transportation, but the immediate concern of the FDNY CoF is safety and compliance to protect lives and property in the context of emergency services.