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Nctps Ii Mi Circle Boiler Maintenance Division Unit Ii Routine Maintenance Attending Boiler Tube Puncture And Breakdown Nctps Ii Mi Circle Boiler Maintenance Division Unit Ii Routine Maintenance Attending Boiler Tube Puncture And Breakdown, SE MI NCTPS II-Tamil Nadu

Tamil Nadu Transmission Corporation Limited-TANTRANSCO has published Nctps Ii Mi Circle Boiler Maintenance Division Unit Ii Routine Maintenance Attending Boiler Tube Puncture And Breakdown Nctps Ii Mi Circle Boiler Maintenance Division Unit Ii Routine Maintenance Attending Boiler Tube Puncture And Breakdown. Submission Date for this Tender is 15-11-2021. Boiler Work Tenders in SE MI NCTPS II Tamil Nadu. Bidders can get complete Tender details and download the document.




Tender Notice

28901269
Corrigendum : Nctps Ii Mi Circle Boiler Maintenance Division Unit Ii Routine Maintenance Attending Boiler Tube Puncture And Breakdown Nctps Ii Mi Circle Boiler Maintenance Division Unit Ii Routine Maintenance Attending Boiler Tube Puncture And Breakdown
Open Tender
Indian
Tamil Nadu
SE MI NCTPS II
15-11-2021

Tender Details

Nctps Ii Mi Circle Boiler Maintenance Division Unit Ii Routine Maintenance Attending Boiler Tube Puncture And Breakdown Nctps Ii Mi Circle Boiler Maintenance Division Unit Ii Routine Maintenance Attending Boiler Tube Puncture And Breakdown

Corrigendum Details

Sr No CorrigendumDate Corrignedum CorrigendumType NewSubmissionDate
1 02-Sep-2021 Date Extension I Date 08-09-2021
2 08-Sep-2021 Date Extension II Date 16-09-2021
3 17-Sep-2021 date extended Date 30-09-2021
4 01-Oct-2021 date extend 3RD time Date 20-10-2021
5 19-Oct-2021 Date Extend V Date 01-11-2021
6 01-Nov-2021 Extension VI Date 15-11-2021

Key Value

Document Fees
Refer document
EMD
INR 13800.0 /-
Tender Value
Refer document

BOQ Items

Name of Work: NCTPS II MI Circle – Boiler Maintenance Division – Unit-II- Routine Maintenance, Attending Boiler tube puncture and Breakdown works for a period of six months from the date of handing over of site.
Sl. No. Item Description
1Charges for air cleaning and water washing the boiler tube puncture area to facilitate boiler tube rectification works.
2Assistance 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, II nd pass and Economiser hopper area and allied valve operations etc.,
3Charges for transportation, Assembling and dismantling of Temporary maintenance platform / Sky climber for shut down maintenance works. a) Transportation of 1set of Temporary maintenance platform/ Sky climber along with ropes, hoist, power cable etc. from pocket store.
4b) Opening/Closing of manhole doors, leading & lifting of platform to 11 mtr & transporting of ropes to 88 mtrs and providing temporary platform in 11 mtr level assembling of Sky climber inside the boiler.
5c) Assembling / dismantling of Sky climber and removal of Temporary Maintenance platform / For one No. in 11 mtr inside the boiler:
6Charges for shifting the sky climber inside the furnace for access of platen super-heater coils.
7Charges for operation sky climber as per the requirements to assist various overhauling works such as Boiler cleaning, tube thickness survey etc., during the maintenance work period.
8Charges for renewal of defective boiler tubes of size above 44.5mm OD inclusive of transportation, cutting of defective tubes, edge/spool preparation, welding with IBR welder and assisting for hydraulic test.
9Tube rectification by window cutting and welding. Marking of defective tubes identified, cutting of defective portion of tubes, edge preparation, welding of new spool piece with IBR welder. Window cutting on the tube, edge preparation, welding of new piece with IBR welder. Charges inclusive of cost of consumables and T&Ps.
10Strengthening of existing joints: This work involves identification of less eroded existing joints, transportation of tools & plants and consumables, Grinding less eroded joints and strengthening the joints by welding with IBR welder.
11Arc filling i) Grinding of boiler tubes for arc filling size 150X 25M² area for 3 layers.
12ii) Charges IBR welder for Arc filling of area 25 x 150 M² by 3 layer.
13Charges for fin welding: Charges for fin welding by cleaning, surface preparation and welding.
14Skin casing welding and patch work: This work involves removing the refractory, Cutting, the existing skin casing sheet wherever required, welding with new skin casing sheets, arrest the ash leakage. This including the cost of consumables scaffolding arrangements and T&P’s.
15Charges for transporting the refractory from stores and unloading at site, leading, lifting, stacking at 7m to 52m elevation of Boiler and removing the waste refractory from Boiler lowering to the ground floor, loading to tipper and disposing at waste disposal area of TPS.
16Charges for chipping removal of old defective refractory, cleaning, surface preparation, mixing the refractory with water application and curing the patch worked refractory in Boiler at various elevation.
17Providing special type platform to access the rear re-heater coils for the entire re heater bottom area and back pass screen tube area for facilitating Oxide scale thickness measurement and renewal of oxide scale formed tubes and for facilitating Reheater vaccum pulling inspection. The charges for transportation of scaffolding materials and consumables to the boiler rear arch slope area, erecting at 64mtrs height for a width of 3 mtrs, scaffolding and temporary platform for facilitating attending the above work. After completion works, removing the scaffolding and temporary platform from the area and shifting back the scaffolding materials. Charges inclusive of T&P’s and consumables.
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