The trap works by absorbing the heat from the fire and preventing it from reaching the other side. A flame trap can limit a fire accident by limiting the flame from spreading.
Flame traps are located at specific intervals in the pipeline. Flame industries are used in many industries such as petrochemical, refining, paper manufacturing, etc. Flame traps should only be used for applications they have been designed for. They also need to be periodically checked for corrosion and insect infestation.