North Carolina Fire Investigation Technician (FIT) Practice Test

The most common leakages in fuel gas systems occur at pipe junctions and unlit pilot lights because these are critical areas where connections are made and where gas flow can be compromised. Pipe junctions, including joints and fittings, are frequent points of potential failure due to the physical stress and movement that can occur in plumbing systems. If these connections are not properly sealed or if they become corroded over time, gas can escape, creating a significant safety hazard.

Unlit pilot lights can also pose a leakage risk. Pilot lights that are not properly maintained or that fail to ignite due to faulty mechanisms can allow gas to accumulate without being burned off. This can lead to dangerous situations, as unburned gas is highly flammable.

Overall, understanding that these specific areas are more prone to leakages helps in conducting thorough inspections and ensuring the safety and integrity of fuel gas systems.