For the manufacturing and Quality Control of the coded equipment, following codes are adapted and followed.
ASME Sec. VIII-Div 1, 2 & BS 5500 for Pressure Vessels, Heat Exchangers, Columns & Reactors, TEMA for Heat exchangers, API 661 for Air coolers & Heaters, API 650 for Storage tanks, ANSI B 31.4, 31.4 & BS for Piping, ASME Sec. II for Material selection, ASME Sec. IX for welding qualifications and ASME V for NDT.