yes I have searched some sites but I get confused some are talking about PLC system and interface with DCS some are talking about other types.
the process parameters may be the pressure or flow of the gas to avoid back flow also the flame monitoring using Temperture detectors or falme detectors
I didn't check API site I need the suitable API number
Outside of API, if even there, I doubt that there is a general standard, partly on account of niche specialties.
Boiler control strategies would be a reasonable place to start. (Basically confirming that enough, but not too much, of air, fuel, and ignition source are present, and responding safely to deviations.)
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One good source of information on flare systems is the John Zink company. They have a number of documents you can download, which might help answer some of your questions:
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