Tamil Nadu Generation And Distribution Corporation Limited-TANGEDCO has published Dismantling The Existingworn Out Pneumatic Operated Single Power Cylinder Hotairhorizontaltype Gateassemblyand Erection Ofnewpneumaticoperatedsingle Power Cylinder Hot Air Vertical Type Gate ( Guillotine Gate ) Assembly, Solenoid Valve, Limit Switchesa. Submission Date for this Tender is 11-08-2022. Tanks and Cylinders Tenders in Salem Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 08-Aug-2022 | EMD Corrigendum | Technical Bid | 11-08-2022 |
| Sl. No. | Item Description |
| 1 | Charges for leading, lifting, transporting & unloading of new pneumatic operated single power cylinder Hot air vertical type gates (Guillotine gate) assembly, Solenoid valves, Limit switches and mating flanges etc...from central stores to respective coal mills and devolution of retrieved eroded/corroded Hot air gate assembly from work site to central stores after completion of work. |
| 2 | Charges for removal of insulation over the existing Hot air vertical gate of respective coal mill branch hot PA duct, this work involves removal of insulated metal sheet, wool mattress, gas cutting, removal of retainers and casing supports etc… |
| 3 | Charges for providing temporary platform around the Hot air gate assembly for providing new pneumatic operated single power cylinder Hot air vertical type gate (Guillotine gate) assembly, Solenoid valve, Limit switches and mating flanges etc... including cost of scaffolding arrangements, consumables and T&P’s etc…, arresting the mill branch hot PA duct of size 1600 mm x 1600 mmfront & back side of existing Hot air gate to avoid distortion of free end duct by using suitable type angle supporting bracket etc…,. |
| 4 | Charges for dismantling the pneumatic power cylinder, lock / Unlock power cylinder, cam shafts from the existing worn out hot air gate one by one and lowering in to ground floor, Marking, cutting & removing the hot air gate from hot PA square duct of size 1600 mm x 1600 mm & lowering from 10 m to ground floor with help of hydra crane, Marking, cutting & Fabrication of new spool pieces of size 1600 x 1600 mm x 300 mm width x 2 Nos., Chamfering the duct open end by grinding, Positioning the newly fabricated spool pieces (Right & Left side) with the existing hot air gate, leading, lifting & positioning the new 2 Nos. of mating flanges (Right & Left side), welding the flanges with duct (Inner side – 1 run & Outer side- 2 run) of both open end duct of size 1600 mm x 1600 mm etc…(Mating flanges will be supplied by TANGEDCO at free of cost) |
| 5 | Charges for leading, lifting, positioning the new pneumatic operated single power cylinder Hot air vertical type gate (Guillotine gate of size : 1600 mm x 4,450 mm) assembly in between the hot PA duct, laying the asbestos rope in between the flanges, tightening the flange all bolt & nuts (Using HT bolt & Nut of size M16 x 50 mm with washers) etc… and finally cutting & removing the all duct supporting bracket angles from the duct.(Required qty of HT M16 x 50 mm full thread bolt & Nuts with washers are under contractors scope) |
| 6 | Charges for fabrication & providing of hot air vertical gate platform (Size : 2.5 m x 1.5 m) at 10 mtr. elevation for inserting the blade block & other gate maintenance works, Fabrication & providing of M.S. angle ladder arrangement (Size : 0.5 m x 3 m) from vertical gate platform to common walk way, Fabrication & providing of M.S. angle ladder arrangement (Size : 0.5 m x 4 m) from common walk way to 17 mtr. elevation for operating the solenoid valves, Fabrication & providing of solenoid valves bed frame with hood arrangement, Fabrication & providing of bed frame of reservoir tank and all other pipe lines supporting angles etc… (Required qty. of iron & steel material will be supplied by TANGEDCO at free of cost.) |
| 7 | Charges for leading, lifting, transporting and unloading of iron and steel material from central stores to work site for fabrication of platform approach base frame structure for newly erected pneumatic operated single power cylinder Hot air vertical type gates (Guillotine gate) assembly. |
| 8 | Charges for leading, lifting, positioning the new pneumatic operated single power cylinder over the top of Hot air gate frame, fixing the power cylinder piston shaft to the gate blade, Positioning & fixing the new solenoid valves at 17 mtr. floorbedframe, leading, Lifting &positioning theair reservoirtank overthe bed frame (adjust cent side of gate), fixing the new air pipe lines, solenoid valves flexible hoses, gate valves etc…(Required qty of fasteners, 1” G.I pipes, pipe fittings, Gate valves, Flexible hoses and all other consumables items are under contractors scope) |
| 9 | Charges for providing new insulation over the newly erected pneumatic operated single power cylinder Hot air vertical type gates (Guillotine gate) assembly with the mill branch hot PA duct, this work involves cleaning, welding of pin & retainers, laying of wool mattress (New / released) sewing the joint of mattress by GI wire, screwing the casing support with retainer wounding the G.I binding wire across the retainer including consumables such as screw, Binding wire, welding electrodes, T&P’s etc.. and transporting of insulation material from central stores to mill plant. (Required qty. of insulation material will be supplied by TANGEDCO at free of cost) |
| 10 | Charges for cleaning and painting the newly fabricated platform base frame, Hand rails, Grills and ladder by one coat of red oxide primer and two coats of enamel grey paint one over the other with proper intervals including the cost of paints. (Required qty. of Red oxide and Enamel grey paints are under contractor scope). |
| 11 | Charges for several trial operations checking for newly erected pneumatic operated single power cylinder Hot air vertical type gates (Guillotine gate) assembly, adjusting the gate blade seal arrangement if necessary as per the entire satisfaction of site Engineer as mentioned in the job specification of schedule. |
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