This Standard is applicable to flares used in pressure relieving and vapor-depressuring systems used in general refinery and petrochemical services. The information provided is intended to aid in the design and selection of a flare system that is most appropriate for the risks and circumstances. Although this Standard is primarily intended for new flares and facilities, it may be used as a guideline in the evaluation of existing facilities together with appropriate cost and risk assessment considerations. This edition of API Std 537 is the identical national adoption of ISO 25457, Petroleum, petrochemical and natural gas industries— Flare details for general refinery and petrochemical service.
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