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| 1 | HOT OIL HEATER REFRACTORY WITH CALCIUM SILICATE BLOCK 75MM /50MM THK AND INSULATING FIRE BRICK-114MM THK IN ALL WALLSHot Oil Refractory Repairs -Includes dismantling of damaged /loosened refractory lining (Brick-Block along with Anchorage) in all four walls of radiation zone upto arch, in full or part thereof, manual cleaning of casing plate from inside, Installation of new calcium silicate block of 75 mm/50mm thickness insulating castable, laying of SS quality foil, laying of insulating fire brick 114 mm thickness ( in both standard and special shapes, cutting and dressing as necessary, with mortar, expansion provisions, tie blocks and all other associated activities and peep hole blocks to complete the refractory lining work as per approved drawings, application procedure and ITP as per the instruction of the Engineer - in- Charge and scope of work. Supply of mortar materials are also included in the scope. (Welding of shell plate, V lugs, holding anchors etc. will be done by HOCL). |
| 2 | HOT OIL HEATER REFRACTORY WITH INSULATION CASTABLE WITH VARIOUS THICKNESS AT ALL ELEVATIONS INCLUDING SUPPLY OF INSULTING MATERIALS.Hot Oil Heater insulating castables includes removal of damaged insulation castables, and existing anchors and installations of new insulating castables with new anchors in Arch area, Convection zone, Corbles and other areas, as per design lining thickness using water proof quality shuttering materials. IT MAY BE NOTED THAT IN LOW ACCESSIBLE AREAS OF CONVECTION ZONE IF IDENTIFIED FOR REPAIR, THE SAME SHALL ALSO BE DONE BY CONTRACTOR. Necessary repair of casing plate/beams will be arranged by HOCL. Supply of Insulating Material, suitable water proof shuttering materials, removal of shutters after curing are also included in the scope. The work shall be done as per the instruction of the Engineer - in - Charge and scope of work |
| 3 | HOT OIL HEATER REFRACTORY AT BREECH/STACK AREA INCLUDING SUPPLY OF INSULATING CASTABLES 50MM THK. Hot oil heater Breech area insulation includes cleaning and removal off damaged insulation castables, and existing anchors and installations of new insulating castables with new anchors in the area of Breech, stack etc, as per design lining thickness using water proof quality shuttering materials. Supply of castables materials are also included in the scope. Removals of shuttering, bolting the man holes cover also included in the scope as per the instruction of Engineer - in - Charge and scope of work. |
| 4 | HOT OIL HEATER REFRACTORY WITH CERAMIC WOOL 25X5 MM THK (REMOVABLE PANEL AT EAST + WEST) Hot oil heater Ceramic wool refractory 150 mm thick includes safe Unbolting and dropping down of Removal panels, including Headerbox Complete dismantling of Ceramic fibre blankets lining with all ancillary materials in removable panels of radiation zone and replacement of the same with 5x25 mm layers of ceramic fibre blankets along with associated activities such as cleaning of plates, providing corrosion resistant paint, providing speed washers etc. as per instruction of Engineer – in - Charge and scope of work. It may be noted that for execution of above job, unbolting of header box and re-fix the same with new gaskets and bolts may be necessary. The corrosion resistant paint, bolts, gaskets, ceramic fibre blanket, etc. will be provided by HOCL at free of cost. (Header box unbolting, dropping down and fixing back will be done by HOCL through other agency). |
| 5 | HOT OIL HEATER REFRACTORY AT EXPANSION JOINT WITH CERAMIC WOOL.Hot oil heater Expansion joints filling includes removal of deteriorated filling materials, cleaning of expansion joints, filling with new ceramic fibre blanket firmly as per the design and instruction of Engineer – in - Charge and scope of work. |
| 6 | Removal and re-fixing of Burner mouth tiles and repair of the same by casting if required as per the instructions from the Engineer-In-Charge and as per the scope of work. |
| 7 | Convection section refractory repair after cutting casing plate (this work with time permits) including supply of materials as per the scope of work and instructions from the Engineer-In-Charge. |
