Tamil Nadu Generation And Distribution Corporation Limited-TANGEDCO has published Tender For Nctps Iimi Circle- Mpm – Ac Plant – Carrying Out Preventive / Breakdown Maintenance Works In Condensor / Chilled Water Pumps , Lines & Valves / Strainer And Cooling Towers Of Ac Systems In Power House Building And Service Building For A Period . Submission Date for this Tender is 11-10-2023. Air Conditioner Tenders in Thiruvallur Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Charges for removal of 250NB/200NB/150NB Gate / Globe valves from the pipelines for Over hauling : this work involves isolating the pipelines, cutting the bolts & nuts, shifting the valve from the existing position from 5 mtr/8mtr elevation to the floor level for servicing in PHB and service building, including cost of consumables and Hire charges for Tools & Plants. ( Rate for servicing of 1 No 250NB/200NB/150NB Gate / Globe valves) |
| 2 | Charges for servicing/Overhauling , re assembling and refixing of 250NB/200NB/150NB Gate / Globe valves, this work involves dismantling the valve parts, cleaning, inspection of internal parts such as stem, bush, gland, fasteners, renewal parts if damaged after rectification reassembing of internal parts with new gland rope, shifting the valve to its original position and fixing it in the pipelines in PHB and service building AC system, including cost of consumables and Hire charges for Tools & Plants.( Gasket, gland rope and required bolt & nuts is under contractor scope) |
| 3 | Charges for overhauling of condenser water pumps (209M3/Hr, 30 HP) / chilled water pumps (110M3/Hr,20HP) in power house building & service building AC system,decoupling and dismantling ofpumps, cleaning, checking of pump internals such as impeller, shaft, bearings, shaft sleeve, gland collar, coupling etc., replacing the wornout internals, bolts & nuts, assembling the pump, aligning with motor, painting and trail run. ( Required Bearings, Bolts & nuts is under contractor scope) |
| 4 | Charges for removal & renewal of frames in 209 CMH of cooling tower at 36mtr elevation : This work involves isolating the cooling tower by closing inlet & outlet valves, removing the worn out frames like vertical frames outside the cooling tower, PVC fills seating frames inside the tower, removing the water distribution MS pipes if required, shifting the pipes to ground level for cleaning and providing temporary supports to the cooling tower if required, erection of new supports, leak attending in FRP sheet joints, removal of water distribution pipes, cleaning the water distribution pipes, replacing the water distribution pipes if required, trial run and commissioning of cooling tower. (Charges inclusive of consumables and T&P"s) (MS angles, channels, water distribution pipes, fills(elim pack & fill pack) will be supplied by board at free of cost) (For 1 No cooling tower MS bolts M10 x 30mm - 160Nos,M x 10 x 75mm - 60 Nos, M12 x 70mm - 60 Nos to be supplied by the contractor) |
| 5 | Charges for Cleaning of 240TR FRP cooling tower collection basin fills, nozzles, against coal & ash powder deposits. By isolating the cooling tower inlet & outlet valves ,Draining the dusty water & after cleaning fill with new water in PHB, service building,to avoid chocking in condenser & to improve AC effect, condenser and chilled water pumps, renewal of gland packing, Cleaning of strainers & filters in PHB, service building,, including cost of consumables and tools & plants. including Hire charges for T & Ps and cost of consumables. |
| 6 | Charges for Removal of worn out 200NB Condenser Pumps inlet lines. This work involves removal of wornout 200NB condenser water Pumps inlet & outlet pipelines and chiller inlet & outlet pipelines at 5mtr / 8mtr elevation in power house building & service building AC system |
| 7 | Charges for leading and lifting of 200 NB pipe from ground level to 5 mtr/8mtr elevation if any puncture or breakdown to be attended |
| 8 | Charges for Erection of 200NB MS Pipe in power house building condenser water pump inlet lines from inlet 250NB headerline at 5 mtr/8mtr elevation.This work involves lifting, positioning, aligning, providing flange joints, welding, leak testing and commissioning. (MS seamless 200NB pipe will be supplied by board at free of cost) (For every 6mtr pipe erection, consumable items MS flange 200NB with 8 holes - 2 Nos and M22 x 100 stud full thread - 8 Nos to be supplied by contractor) |
| 9 | Charges for attending pipe line leak by patch welding in 250NB pipelines at 5 mtr/8mtr elevation: this work involves preparation of patch plate, surface preparation in leakage area, welding of patch plate with the existing pipeline.(Rate for 1 No patch welding in 250NB MS pipes inclusive of consumable items like welding rod, cutting gas ) |
| 10 | Charges for recondition/replacement of damaged "Y" strainer assembly of condenser water pump / Chilled water pump: This work involves arresting the pipe line,dismantling the existing damaged strainer from its position, by removal of corroded bolts and nuts, lowering into the floor, transporting, leading, lifiting, positioning the new "Y" strainer, refixing into the pipe line, aligning and tightening flanges on both ends and strengthing the bothside flanges, checking the water leaks (200NB / 150NB " Y " strainer will be supplied by board at free of cost) |
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