G2 Gas Fitter Practice Exam

Which gas fitting component requires a sensed flame for safe operation?

1. Intermittent ignition

2. Continuous pilot

3. Proved pilot

4. Power venter

The correct answer is: Proved pilot

The component that requires a sensed flame for safe operation is the proved pilot. A proved pilot is designed to ensure safety by monitoring the presence of a flame. In applications where reliability and safety are critical, a proved pilot includes a flame sensing mechanism that confirms the pilot light is actually lit before allowing the gas burner to operate. If the flame goes out, the system will shut off the gas supply to prevent potentially hazardous situations such as gas leaks or explosions. In contrast, intermittent ignition systems do not require a constant flame; they ignite the gas when demand arises, thus eliminating the need for a continuously sensed flame. Continuous pilots also operate with a flame, but they do not typically incorporate the same safety checks as proved pilots, as they can operate with a simple, unmonitored flame. Power venters are mechanical devices that assist in venting combustion gases and do not directly engage with flame sensing technology for gas supply regulation. Therefore, proved pilots are essential for applications requiring flame detection to ensure safety.