This International Standard specifies the requirements and gives recommendations for the procedures and design criteria used for calculating the required wall thickness of new tubes for petroleum refinery heaters. These procedures are appropriate for designing tubes for service in both corrosive and non-corrosive applications. These procedures have been developed specifically for the design of refinery and related process fired heater tubes (direct-fired, heat-absorbing tubes within enclosures). These procedures are not intended to be used for the design of external piping.
This International Standard does not give recommendations for tube retirement thickness; annex A describes a technique for estimating the life remaining for a heater tube.
ISO 13704:2001 history
2022ISO 13704:2022 Petroleum, petrochemical and natural gas industries — Calculation of heater-tube thickness in petroleum refineries
2008ISO 13704:2007/cor 1:2008 Petroleum, petrochemical and natural gas industries — Calculation of heater-tube thickness in petroleum refineries TECHNICAL CORRIGENDUM 1
2007ISO 13704:2007 Petroleum, petrochemical and natural gas industries - Calculation of heater-tube thickness in petroleum refineries
2004ISO 13704:2001/Cor 1:2004 Petroleum and natural gas industries - Calculation of heater-tube thickness in petroleum refineries; Technical Corrigendum 1
2001ISO 13704:2001 Petroleum and natural gas industries - Calculation of heater-tube thickness in petroleum refineries