MULTI-TUBE STEAM HEAT EXCHANGER IS PART OF WELL TEST PRODUCT LINE THAT IS USED TO HEAT WELL EFFLUENTS PRIOR TO PROCESSING DOWN STREAM DURING WELL TEST OPERATIONS. THE HEAT EXCHANGER CONSISTS OF MULTIPLE SMALL TUBES PASSING THROUGH A STEAM SUPPLIED VESSEL. THE TUBES TRANSFER HEAT FROM STEAM TO THE WELL EFFLUENT AS IT PASSES THROUGH THE EXCHANGER. THE TEMPERATURE IS CONTROLLED BY A TEMPERATURE SENSING CONTROL VALVE THAT REGULATES THE STEAM SUPPLIED TO THE HEATER SHELL.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 8419 - MACHINERY, PLANT OR LABORATORY EQUIPMENT, WHETHER OR NOT ELECTRICALLY HEATED (EXCLUDING FURNACES, OVENS AND OTHER EQUIPMENT OF HEADING 8514), FOR THE TREATMENT OF MATERIALS BY A PROCESS INVOLVING A CHANGE OF TEMPERATURE SUCH AS HEATING, COOKING, ROASTING, DISTILLING, RECTIFYING, STERILISING, PASTEURISING, STEAMING, DRYING, EVAPORATING, VAPORISING, CONDENSING OR COOLING, OTHER THAN MACHINERY OR PLANT OF A KIND USED FOR DOMESTIC PURPOSES; INSTANTANEOUS OR STORAGE WATER HEATERS, NON-ELECTRIC. GIR6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 841950 - HEAT-EXCHANGE UNITS TARIC CODE 8419818090 - OTHER THAN FOR USE IN CIVIL AIRCRAFT