FLOATING HEAD Heat Exchanger General Assembly view Gaskets Tube side Inlet Shell side Inlet Shell Gasket Bundle Floating Head Back Cover Distributor Saddle Tube side Outlet Tube Sheet 2 Shell side Outlet Floating Head Heat Exchanger Cross Sectional View Floating Head Shell Tube Bundle Distributor 3 Baffle Back cover FLOATING HEAD Heat Exchanger Split View of Parts Gasket Split ring Gasket Tube sheet Distributor Floating Head Shell Floating Head Detail 4 Gasket Gasket Tube Bundle Tube sheet Spacer Back Cover Do Not Start The Job Without A Safety Plan 5 FLOATING HEAD Heat Exchanger Maintenance Activity Description Blind Inlets-Outlets at Disconnect and remove plant area Floating Head with gasket Disconnect and remove Install the bundle puller Distributor with gasket Disconnect and remove Pull the bundle out Back cover with gasket Bundle Puller Ground level 6 FLOATING HEAD Heat Exchanger Maintenance Activity Description…..Continuation Lower the bundle and Lift the bundle puller with take to hydro-jetting area Clean Shell and covers clean bundle and new gasket, ready for reinstallation Bundle Puller 7 Ground level FLOATING HEAD Heat Exchanger Maintenance Activity Description…..Continuation Reinsert the bundle by Lower the bundle puller to bundle puller the ground and take it away Bundle Puller 8 Ground level FLOATING HEAD Heat Exchanger Maintenance Activity Description…..Continuation Shell Side Hydro-test Install front Test Ring with gasket Install back Test Ring with gasket Install Pressure Gauge Raise the pressure up to value given by Inspection Connect water pump Fill the shell by water Check leakages from tubes Install Blinds in shell PG Ground level 9 Water Pump FLOATING HEAD Heat Exchanger Shell Side Hydro-test …Check leakages from tubes continuation PG “B” “A” Water View “A” Water View “B” 10 FLOATING HEAD Heat Exchanger Shell Side Hydro-test ….Continuation Details PG Tube leak elimination Details “A” Shell under pressure “B” Detail “A” [By Expansion both sides] Detail “B” [By Plug both sides] Leak Leak 11 Tube Expander Tool FLOATING HEAD Heat Exchanger Maintenance Activity Description…..Continuation Discharge water from shell drain Remove Test Ring & gasket [distributor side] Reinstall distributor with new gasket & tight bolts Blind Distributor in & out PG Drain 12 Remove Test Ring & gasket [floating head side] Reinstall Floating Head with split flange, new gasket & tight bolts FLOATING HEAD Heat Exchanger Tube Side Hydro-test ….Continuation Details Check floating head gasket sealing Check distributor gasket sealing Install PG in distributor top nozzle Connect water pump Fill tube side by water Raise the pressure up to value given by Inspection PG PG Drain Water Pump 13 Discharge the water, remove PG and water pump Remove blinds form distributor nozzle and tight bolts FLOATING HEAD Heat Exchanger Shell Side Final Hydro-test ….Continuation Details Check Back cover gasket sealing Install Back cover with Gasket Connect water pump Check bundle to shell gasket sealing Fill Shell side by water Raise the pressure up to value given by Inspection Discharge the water, remove PG and water pump Remove blinds form shell nozzles and tight bolts PG Drain Water Pump 14 FLOATING HEAD Heat Exchanger Handover & Final House Keeping By Maintenance Remove tools and equipment Close Work permit Clean and wash the area Remove scaffold after unit start-up 15
