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A gas flare, located at jubail industrial area the flare system helps burn out the total reserve
gas.
On oil production rigs, in refineries and chemical plants,
its primary purpose is to act as a safety device to protect vessels or
pipes from over-pressuring due to unplanned upsets. Pressure control
valves are set at predetermined pressures to release excess gas, thus
allowing continued operation during upset conditions. Whenever plant
equipment items are over-pressured, the pressure relief valves on the
equipment automatically release gases (and sometimes liquids as well)
which are routed through piping runs called flare headers to the
flare stacks. The gases and/or liquids are separated in a flare knock
out drum with the gas piped to the flare stacks for burning or for
lighter gases venting. The size and brightness of the resulting flame
depends upon how much flammable material was released. Typically there
may be more than one flare system handling high pressure gas, low
pressure gas, sour or corrosive gas, cold gas and wet gas.
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