What device is controlled by flame failure safety measures?

The flame scanner is a crucial component in boiler safety systems. It monitors the presence of a flame to ensure that burning fuel produces the intended combustion. If the flame goes out or fails to ignite properly, the flame scanner detects this absence and initiates a safety response, often shutting down fuel supply to prevent dangerous conditions such as explosions or fire hazards.

In systems with high pressures, reliable flame detection is essential, as any failure can lead to catastrophic outcomes. The flame failure safety measures are designed to protect both operators and equipment, making the flame scanner a vital part of the boiler's safety mechanisms.

Other devices listed, like a water level indicator, pressure gauge, or temperature probe, serve important functions in monitoring and regulating boiler operation but are not directly involved in detecting flame presence or initiating safety protocols related to flame failure. Therefore, their roles do not encompass the specific flame failure safety measures implemented to safeguard the combustion process.