This standard 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.
API STD 661-2013 history
2013API STD 661-2013 Petroleum@ Petrochemical@ and Natural Gas Industries - Air-cooled Heat Exchangers (SEVENTH EDITION)
2006API STD 661-2006 Air-Cooled Heat Exchangers for General Refinery Service (Sixth Edition)
2002API STD 661-2002 Air-Cooled Heat Exchangers for General Refinery Service (Fifth Edition; ISO 13706: 2000/ISO 13706 Adoption)
1997API STD 661-1997 Air-Cooled Heat Exchangers for General Refinery Services (Fourth Edition)
1992API STD 661-1992 Air-Cooled Heat Exchangers for General Refinery Service
1978API STD 661-1978 Air-Cooled Heat Exchangers for General Refinery Service (Second Edition)