ELECTRONIC SPARK IGNITION Electronic Spark Ignition takes advantage of a pilot's basic function. A spark ignites the combustible air and gas mixture present at the pilot tip. This ensures that the flame is ignited exactly where it is intended to be. The only utility lines to be run up the stack are fuel gas and conduit. With the addition of a temperature monitor, the electronic spark ignition system can automatically re-light the pilots should they be extinguished. The system can attempt to re-light the pilots for some specified amount of time prior to sending an alarm to the control room then only alarm the operators if it is unsuccessful. The electronic spark ignition systems are very responsive, and require little operational maintenance, however, they too have some drawbacks.

1. Due to the high temperature environment at the flare tip the igniter rods are subjected to high temperatures, and wide temperature fluctuations. This necessitates the use of expensive materials for the construction of the ignition rods.

2. The voltage required to produce a spark capable of igniting the pilot is high. This high voltage electricity creates a manageable hazard with the use of good electrical wiring practices, and good grounding.

3. Due to the high voltage and harsh environment typical ignition rods do not last as long as a flame front generator panel. Electronic spark ignition systems are available with a retractable system enabling an owner to replace the ignition rods while the flare is in service. The use of a retractable igniter system can increase the life span of an ignition system to equal that of the flare tip itself. top