FDNY CoF – Use of LPG or CNG in Engine Fuel Systems (G-22) Practice Test 2026 - Free G-22 Exam Practice Questions and Study Guide

The function of a gas detection system in LPG systems is primarily to monitor for gas leaks and provide alerts. This system plays a critical safety role by continuously checking for the presence of combustible gases in the environment where LPG is used. When a leak is detected, the system triggers alarms or alerts, allowing for immediate action to be taken to address the hazard.

This proactive monitoring is essential because LPG is flammable and can pose serious hazards if released into the atmosphere. Rapid detection and alerting enable occupants or operators to evacuate or respond quickly, thereby reducing the risk of explosions and other dangerous situations.

The other functions listed, such as analyzing fuel composition, regulating flow rates, or controlling combustion efficiency, while important in their respective contexts, do not relate to the primary function of leak detection in LPG systems. These systems are focused on ensuring a safe environment rather than managing fuel characteristics or combustion processes.