bids are invited for custom bid for services - maintenance of heat exchangers vessels and columns in phenol plant cumene and cumox - c2002_effluent rectifier column_maintenance as per the scope of work , c2003_depropanizer column_maintenance as per the scope of work , c2005_cumene column_maintenance as per the scope of work , v2006_acid knockout drum_maintenance and hydrotesting as per the scope of work , e 2001_combined feed heater_floating head straight tube exchanger_maintenance and hydrotesting as per the scope of work , e 2002 a_combined feed exchanger_fixed head u_tube exchanger_maintenance and hydrotesting as per the scope of work , e 2002 b_combined feed exchanger_fixed head u_tube exchanger_maintenance and hydrotesting as per the scope of work , e 2004_depropaniser overhead condenser_floating head straight tube exchanger_maintenance and hydrotesting as per the scope of work , e 2005_lpg_product cooler_fixed head fin u_tube exchanger_maintenance and hydrotesting as per scope of work , e 2006_recycle column reboiler_floating head straight tube exchanger_maintenance and hydrotesting as per the scope of work , e 2009_recycle column trim condenser_fixed head fin u_tube exchanger_maintenance and hydrotesting as per the scope of work , e 2010 cumene column reboiler _floating head straight tube exchanger_maintenance and hydrotesting as per the scope of work , e 2011_cumene column bottom cooler_fixed head fin u-tube exchanger_maintenance and hydrotesting as per the scope of work , e 2012_cumene product cooler_fixed head fin u_tube exchanger_maintenance and hydrotesting as per the scope of work , e 2013a_cumene column product trim cooler_fixed head fin u_tube exchanger_maintenance and hydrotesting as per the scope of work , e 2013b_cumene column product trim cooler_fixed head fin u_tube exchanger_maintenance and hydrotesting as per the scope of work , e2501_compressor after cooler_floating head straight tube exchanger_maintenance and hydrotesting as per the scope of work , e2506a_oxidiser vent gas codensor_floating head straigt tube exchanger_maintenance and hydrotesting as per the scope of work , e2506b_oxidiser vent gas codensor_floating head straigt tube exchanger_maintenance and hydrotesting as per the scope of work , w2502 ammonia condensor_fixed head straight tube exchanger_maintenance and hydrotesting as per the scope of work , e3005_evaporator bottom cooler_floating head straight tube exchanger_maintenance and hydrotesting as per the scope of work , e3501a cleavage reactor cooler_fixed head u_tube exchanger_maintenance and hydrotesting as per the scope of work , e3501b cleavage reactor cooler_fixed head u_tube exchanger_maintenance and hydrotesting as per the scope of work , e4001a direct neutralisation feed cooler_fixed head u_tube exchanger_maintenance and hydrotesting as per the scope of work , e4001b direct neutralisation feed cooler_fixed head u_tube exchanger_maintenance and hydrotesting as per the scope of work , e4002a direct neutralisation product cooler_fixed head u_tube exchanger_maintenance and hydrotesting as per the scope of work , e4002 b direct neutralisation product cooler_fixed head u_tube exchanger_maintenance and hydrotesting as per the scope of work , j3001_1 evaporator 1st stage ejector condenser_floating head u_tube exchanger_maintenance and hydrotesting as per the scope of work , j3001_2 evaporator 2nd stage ejector condenser_floating head u tube exchanger_maintenance and hydrotesting as per the scope of work , j3001_3 evaporator 3rd stage ejector condenser_floating head u tube exchanger_maintenance and hydrotesting as per the scope of work