tender for rubber lining of stack a , stack b , various vessels , ducts and fan outlet expansion joints at np plant fact - cd , during ata 2020 ., tender for rubber lining of stack a , stack b , various vessels , ducts and fan outlet expansion joints at np plant fact - cd , during ata 2020 ., rubber lining of stack a , stack b , various vessels and ducts at np plant fact - cd , during ata 2020 , with pre-vulcanized natural rubber calendared sheets to a thickness of 05mm . work involves: pre-vulcanized natural rubber calendared sheets 2 . 5mm thick suitable for cold bonding , with required adhesives , solvents , curing agent etc . shall be supplied . packing , forwarding , transportation , loading / unloading and storage at fact cochin division site , ambalamedu , shall be done . necessary scaffoldings shall be arranged for the rubber lining works of stack a and b at various height , vessels and ducts at np plant , with proper pipes and clamps as per i s standard . removal of old rubber lining and surface preparation shall be done by chipping / grinding / thorough mechanical cleaning / shot / grit blasting , as per the instruction of engineer - in charge . rubber lining / application shall be done with pre-vulcanized natural rubber calendared sheets to a thickness of 05mm in two layers of 2 . 5mm thick each by cold bonding method , as per the standards for the rubber lining works on stack a and b at various height , vessels and ducts at np plant fact - cd , during ata 2020 . rubber lining shall be carried out as per the special conditions of contract , general conditions of contract and specification sheets attached . cold bonding / curing , inspection , testing , site supervision , and safety requirements shall be done as per attached specification sheet no . 030a of fact -cd . , rubber lining of expansion joint of fume fan discharge , cooler fan discharge and dryer fan discharge at np plant fact - cd , during ata 2020 , with pre-vulcanized natural rubber calendared sheets to a thickness of 10mm . work involves: pre-vulcanized natural rubber calendared sheets 2 . 5mm thick and canvases sheets 2 . 5mm thick suitable for cold bonding , with required adhesives , solvents , curing agent etc . shall be supplied . packing , forwarding , transportation , loading / unloading and storage at fact cochin division site , ambalamedu , shall be done . necessary scaffoldings shall be arranged for the rubber lining works of expansion joint of fume fan discharge , cooler fan discharge and dryer fan discharge at np plant , with proper pipes and clamps as per i s standard . removal of old rubber lining and surface preparation shall be done by chipping / grinding / thorough mechanical cleaning / shot / grit blasting , as per the instruction of engineer - in charge . rubber lining / application shall be done with pre-vulcanized natural rubber calendared sheets to a thickness of 10mm with one bottom layer of 2 . 5mm thick natural rubber calendared sheet , next one layer with 2 . 5mm thick canvases sheet and next in two layers of 2 . 5mm thick natural rubber calendared sheet each by cold bonding method , as per the standards for the rubber lining works on expansion joint of fume fan discharge , cooler fan discharge and dryer fan discharge at np plant fact - cd , during ata 2020 . rubber lining shall be carried out as per the special conditions of contract , general conditions of contract and specification sheets attached . cold bonding / curing , inspection , testing , site supervision , and safety requirements shall be done as per attached specification sheet no . 030a of fact-cd .