"This International Standard specifies requirements and gives recommendations for the design@ materials@ fabrication@ inspection@ testing@ preparation for shipment@ and erection of fired heaters@ air preheaters@ fans and burners for general refinery service. This International Standard is not intended to apply to the design of steam reformers or pyrolysis furnaces. Standard560 Annex A equipment (component) Data Sheets in Microsoft Excel formatincluding: a) Fired-heater data sheets: 12 sheets (6 in SI units@ 6in USC units); b) Burner data sheets: 6 sheets (3 in SI units@ 3 in USCunits); c) Air-preheater data sheets: 4 sheets (2 in SI units@ 2in USC units); d) Fan data sheets: 4 sheets (2 in SI units@ 2 in USCunits); e) Sootblower data sheets: 2 sheets (1 in SI units@ 1 inUSC units). See Clause 5 of API 560 forinstructions on using the equipment data sheets. Note that the purchaser shouldcomplete@ as a minimum@ those items that are designated by an asterisk (*).?? "