Article: The relation between wind speed and min required purge rate to avoid flare s

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I've tried to contact the vendor but no response, but I've found the following:

BP flare guidance Annex C states that "Note: It should be recognised that Husa correlation was derived under calm or no wind conditions and is generally applicable for wind speeds up to approximately 13,4 m/s (30 mph). Locations where prevailing winds can often exceed this wind speed may need somewhat higher purge rates.". to me this is fair enough.

Regards
Malek