Tender For Repair Of Acid Tanks Of Ap Line By Rubberlining, Ssm REPAIR OF ACID TANK OF AP LINE BY RUBBERLINING AS PER SCOPE OF WORK. SCOPE OF WORK:01) SCOPE OF WORK INCLUDES REPAIR OF ACID TANKS IN AP LINE BY RE-RUBBER LINING AS PER IS-4682 (PART-1), 1968 AND AS PER DETAILS GIVEN BELOW. (02) REMOVAL OF OLD, DAMAGED,DEFECTIVE RUBBERLININGS BY THE CONTRACTOR AFTER THE REMOVAL OF REFRACTORY LINING BY RE(S) OF RSP. (03) RUBBER LINING OF THE ACID TANK SHELL WITH SPECIAL RUBBER TO MATCH WITH THE ORIGINAL RUBBER, IN THREE LAYERS AND UPTO A MINIMUM THICKNESS OF 6MM. (04) KEEPING THE EXISTING RUBBERLINING (WHICH IS IN GOOD CONDITION) INTACT, NEW RUBBERLINING IS TO BE LAID OVER MINIMUM 200MM OVERLAP OVER EACH LAYER. (05) THE NEW RUBBERLINING MUST WITHSTAND HYDROCHLORIC ACID OF UP TO 12% CONCENTRATION AT 80 DEGREE CENTIGRADE. (06) BEFORE RUBBERLINING SURFACE PREPARATION OF BASE METAL IS TO BE DONE BY SAND BLASTING MACHINE / GRINDING. (07) AFTER RUBBERLINING IS DONE, CONTINUITY OF LINING IS TO BE CHECKED BY SPARK
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