Standard 661

Petroleum, Petrochemical, and Natural Gas Industries Air-cooled Heat Exchangers

Gives requirements and recommendations for the design, materials, fabrication, inspection, testing, and preparation for shipment of air-cooled heat exchangers for use in the petroleum, petrochemical, and natural gas industries. This standard is applicable to air-cooled heat exchangers with horizontal bundles, but the basic concepts can also be applied to other configurations.

7th Edition | July 2013 | Reaffirmed June 2018 

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