Q: How does combustion safety equipment work?

A: Combustion systems have many variations, but the overarching goal is operator safety. To provide safety, a multitude of sensors (pressure switches, flame detectors, position indicators, etc.) and devices (isolation and relief valves) work together in concert. The general design strategy is to presume an unsafe condition exists unless all monitored items are proven safe. Unless a safe condition is wholly proven, the safety isolation valves will not be permitted to open.