Tamil Nadu Generation And Distribution Corporation Limited-TANGEDCO has published Attending General Cleaning , Daily Maintenance And Breakdown Works Of Steam Generator. Submission Date for this Tender is 29-07-2021. Steam Generators Tenders in SE M1 MTPS 2 Tamil Nadu. Bidders can get complete Tender details and download the document.
| Name of Work: MTPS-II(1X600MW) – Boiler Maintenance Division – Attending General cleaning, preventive maintenance and breakdown works of Steam Generator, Auxiliaries and attending emergency breakdown works for a period of six months from the date of taking over of the site. | |||||
|---|---|---|---|---|---|
| Sl. No. | Item Description | Item Code / Make | Quantity | Units | |
| 1 | 1 | General Cleaning and up keeping in all the floors and Structures of Boiler from ‘0’mtr to boiler top except ‘0’m flooring, Cleaning Oil leak in Oil control station area and disposal of oil to the area notified by the Engineer in charge . | item1 | 180 | Nos of operation |
| 2 | 2 | Attending Steam leak in Valves / changing gaskets in flanges in Boiler, soot blowers and Reheater Boiler and connected steam lines from MTPS-I to MTPS-II. | item2 | 25 | Nos. |
| 3 | 3 | Attending general cleaning and up keeping in the Resin Regeneration system in Condensate Polishing Unit building, Condensate Polishing Units in Turbine ‘0’m area and its connected lines, routine maintenance works in all the pumps like Boiler fill pump, Hot well make up pump, CPU Regeneration pumps, CPU tank, Condensate Storage Tank etc., DM tank I&II and DM transfer pumps in Stage I&II DM plant of MTPS-I and maintenance works if any in connected valves and piping of CPU lines and DM transfer line from MTPS-I to MTPS-II and Reheater boiler near ID fans. | item3 | 180 | Nos of operation |
| 4 | 4 | Cutting, edge preparation and welding of 1” pipe line, tee elbows, bends in Boiler pressure parts by IBR welder etc. at joints cost of welding electrodes, all consumables, tools and plants etc., | item4 | 25 | Joint |
| 5 | 5 | ASSISTANCE AND INSPECTION FOR BOILER HYDRAULIC TEST WHEN THE UNIT IS IN STANDBY CONDITION This work comprises of assistance for hydraulic test and inspection of Boiler at pressurized condition in boiler I st pass, Inter pass, IInd pass and Economizer hopper area and allied valve operations etc., | item5 | 2 | Time |
| 6 | 6 | Rectification of tube puncture up to 10 Joints of any size of tubes (if no cutting and welding of hanger tubes involved) / Arc filling, edge preparation and welding by IBR welder inclusive of labour, special welding electrode, consumables, hire charges for T&P’s and transportation of materials etc., (Filler wire will be provided by Board at free of cost) | item6 | 1 | Time |
| 7 | 7 | Cutting the worn out tubes of tube dia above 44.5mm, & up to 63.5X5.2mm edge preparation of the new & existing tubes, positioning the tubes with proper alignment, TIG and ARC welding the joint with IBR welder, cost of Argon gas, cutting gas, all consumables, T&P’s, hire charges for welding generator, TIG set and etc. | item7 | 120 | Nos of equivalent Joints |
| 8 | 8 | Surface preparation and metal Filing by arc welding to the required thickness in the eroded portions of the boiler tubes by the IBR welder including the cost of Welding electrodes & hire charges for welding generator & other T&P’s etc. Welding of size up to 150 x 25-mm | item8 | 50 | Nos |
| 9 | 9 | Lowering the coils for cutting, grinding and welding with providing proper chain block support and lifting the same coils after completion of works including the charges like consumables, T&P’s and etc., | item9 | 4 | Nos |
| 10 | 10 | Fin welding including the cost of Welding electrode, all consumables, hire charges for welding generator & other T&P’s etc. | item10 | 30 | mtr |
| 11 | 11 | Opening of all manhole doors, and closing manhole doors after completion work including changing of asbestos ropes and clamps in the doors in Boiler area. | item11 | 50 | Nos |
| 12 | 12 | Arrangement of platform and scaffolding materials and erection of the same wherever required in the boiler area for tube rectification work / hydro test and transporting the scaffolding materials. | item12 | 8 | Time |
| 13 | 13 | Removal of insulation double layer (60mm + 60mm = 120mm thick) from Boiler elevation and refixing after completion of rectification works. | item13 | 50 | Sq.m |
| 14 | 14 | Patch welding works in the worn out, eroded portion of wind box , Boiler structures and suppots. | item14 | 30 | RM |
| 15 | 15 | Dismantling of pumps, Inspection of internals such as bearings, Mechanical seal assembly etc., renewal of bearing/Mechanical seal spares if required in DM transfer pumps, Boiler fill pumps and Hot well make up pumps. | item15 | 1 | No |
| 16 | 16 | Transporting the ash from 17m to ‘0’m and dumping the ash into MTPS Ash dyke by pulley arrangements including cost of consumables, hire charges for T&P’s, etc., | item16 | 10 | Ton |
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