Construction of new Transformer Bay at 110 kV Substation Muvattupuzha

Cutting of steel angle in yard structure erection

Earth work in excavation by mechanical means (Hydraulic excavator) /manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift up to 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.All kinds of soil

Demolishing cement concrete manually / by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in- Charge.Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

Demolishing R.C.C. work manually / by mechanical means including stacking of steel bars and disposal of unserviceable material with in 50 metres lead as per direction of Engineer -in-Charge.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:4:8 (1 cement : 4 coarse sand : 8 graded stone aggregate 40 nominal size)

Centering and shuttering including strutting, etc. and removal of form for:Foundations, footings, bases of columns, etc for mass concrete

Centering and shuttering including strutting, etc. and removal of form for:Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level:1:1:5:3 (1 cement 1.5 coarse sand :3 graded stone aggregate 20 mm nominal size

Providing, hoisting and fixing up to floor level precast reinforced cement concrete work in string courses, bands, copings, bed plates, anchor blocks, plain window sills and the like, including the cost of required centering, shuttering but excluding cost of reinforcement, with1:1.5:3 (1 cement : 1.5 coarse sand (Zone - III) : 3 graded stone aggregate 20 mm nominal size)

Steel reinforcement for R.C.C work including straightening, cutting, bending, placing in position and binding all complete upto plinth levelThermo - Mechanically Treated bars of grade Fe-500D or more

12 mm cement plaster of mix:1:4 ( 1 cement : 4 coarse sand)

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20 cm in depth,consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m.Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundation etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m.

Loading MS / GI materials hardware fittings of line work and clamps for equipments and bus from the place of its storage to department lorry and make it ready for transportation as per the direction of departmental officers.

Unloading MS / GI materials, hardware fittings of line work and clamps for equipments and bus from department lorry to substation site and stacking for proper storage as per the direction of departmental officers.

Dismantling of 1 No. 110/66KV CT/PT/CVT/CC/220KV NCT from the already erected structure of above 1.5m height , leading to storage place carefully keeping at vertically not allowing tilting from vertical position more than the specified angles, keeping lines and levels as per the direction of the departmental officers, including all labour charges, hire charges of tools & tackles etc.

Dismantling of 1 set of 110/66kV Line isolator from the already erected structure of above 1.5m height , including dismantling the structure, leading with an initial lead of 50m to storage place carefully keeping at vertically not allowing tilting from vertical position more than the specified angles, keeping lines and levels as per the direction of the departmental officers, including all labour charges, hire charges of tools & tackles etc.

Erection of 1 No. 110/66KV LA/Post insulator on the already erected structure after opening of crates at the place of storage leading to site carefully, keeping lines and levels as per the direction of the departmental officers.

Dismantling of 1 No. 110/66kV LA / Post insulator from the already erected structure of above 1.5m height , leading to storage place carefully keeping at vertically not allowing tilting from vertical position more than the specified angles, keeping lines and levels as per the direction of the departmental officers, including all labour charges, hire charges of tools & tackles etc.

Stringing and fixing earth wire of size 7/9, 7/10 or 7/3.15 between top of the columns and to terminal tower at 33/66/110/220KV substations with compressed / bolted ends at proper tension including uncoiling and cutting of conductor , jumpering, giving earth bond connections by drawing the end of the conductor through the columns, jointing wherever necessary providing back stays at the time of stringing etc. as per the direction of the departmental officers.

Providing interconnection between equipments using ACSR Moose/ Kundah/ wolf Single conductor at both ends with compressed/ bolted ends including uncoiling and cutting of conductor as per the direction of departmental officers.

Dismantling interconnection between equipments using ACSR Moose/ Kundah/ wolf Single conductor at both ends with compressed/ bolted ends including uncoiling and cutting of conductor as per the direction of departmental officers.

Unpacking the transformer / feeder C&R panels, 110V battery charger, OLTC cubicle LT panel at the place of storage transporting to the place of erection and erecting after providing foundation bolt keeping to lines and levels as per the direction of departmental officers.

Preparing wiring schedule per transformer / feeder bay of 110 or 66kV with details of type of cable, core and colour, ferrule No. and terminal no of equipments/panels including giving full details in A4 sheet with computer print providing outer border line and sheet no etc. and supplying in the shape of book with special binding etc. and assisting the departmental officers at the time of relay testing and commissioning

Additional copy of the wiring schedule with spiral binding

Uncoiling 20/19 core 2.5sqmm, 12 core 4 sqmm control cable (Armoured or unarmoured) from cable drums cutting to required length and laying through trench/pipe/cable tray grouping the same neatly using cable tie and carefully including for providing loop wherever necessary and providing cable marker at both ends of cable as per direction of departmental staff at site.

Uncoiling 12/7/6 core 2.5 sq mm control cable (armoured and unarmoured) from cable drums and cutting to required length and laying through trench/pipe/cable tray grouping the same neatly using cable tie and carefully including for providing loops wherever necessary and cable marker, at both ends of cable as per direction of departmental staff at site.

Uncoiling 4/2 core 2.5sqmm control cable (armored or unarmored) from cable drums and cutting to required length and laying through trench/pipe/cable tray neatly and carefully including for providing loops wherever necessary and cable marker at both ends of cable as per direction of departmental staff at site.

Uncoiling 5/4/3/2 core 4sqmm control cable(armoured or unarmoured) from cable drums and laying through trench/pipe/cable tray neatly and carefully including for providing loops wherever necessary and cable marker at both ends of cable as per direction of departmental staff at site.

Termination of cables in panel by using cable glands of fixing the cable rigidly by any means as per direction of departmental staff at site charges include for providing necessary suitable hole in the gland plate etc. for 20/19 core 2.5sqmm cable/12 core 4 sqmm cable (using gland of size 28-32mm)

Termination of cables in panel by using cable glands of fixing the cable rigidly by any means as per direction of departmental staff at site charges include for providing necessary suitable hole in the gland plate etc. for 12/7/6 core 2.5 sqmm cable (using gland of size 25mm).

Termination of cables in panel by using cable glands of fixing the cable rigidly by any means as per direction of departmental staff at site charges include for providing necessary suitable hole in the gland plate etc. for 4/2 core 2.5 sq mm cable/4/2 core 4 sq mm cable (using gland of size 16-22mm).

Doing termination of all sizes of PVC insulated copper control cable 2.5 mm², pealing, providing number and letter ferrules in the wire, stripping ends, crimping with suitable lugs and connecting to the terminals in the panel board and marshalling kiosk etc., neatly and carefully including cost of copper sockets and ferrules as per the direction of Departmental Officers at site.

Doing termination of all sizes of PVC insulated copper control cable 4.0 mm², pealing, providing number and letter ferrules in the wire, stripping ends, crimping with suitable lugs and connecting to the terminals in the panel board and marshalling kiosk etc., using cable tie and cable tie neatly and carefully including cost of copper sockets and ferrules as per the direction of Departmental Officers at site.

Supplying aluminium cable tags punching number and alphabets up to 7 digits and binding to cable using copper wire including cost of all materials as per the direction of Board Officials at site.

Levelling, Cutting and fixing in position departmentally supplied MS Chequered plate 6 mm, 10 mm or 12mm thick in suitable length and width including providing lifting legs and suitable holes for lifting including grinding sides and corners etc. complete.

Fabrication of structures for erecting equipments. The GI & MS angles will be supplied departmentally

Drilling holes in yard structure

Welding charge for welding on iron parts using arc welding as per standards

Erection of yard structures and assembling of columns and beams using bolt and nut including punching of holes.

Cutting 32mm MS rod in required length etc complete as per the direction of the departmental officers.

Bending 32mm MS rod for crossing cable trench/foundations/risers etc.

Laying of earth mat of required size as specified using 40/32/25mm MS rod including levelling lowering and placing in trenches, complete as per the direction of departmental officers.

Laying of departmentally supplied GI strip/Copper strip of suitable size including cleaning and neatly bending of strips ,cutting, removing of metal/earth in the yard and burying earth strip to the required depth re-doing the yard metalling as per the direction of the departmental officers.

Driving down the ground electrode upto a depth of 3m from the already taken earth pit as directed by the departmental officers.

Welding of overlapping joints for mat,riser lap joints with 32/25mm MS rod placed in trenches, having 150mm in length 6mm in thick on both sides of the rod and both ends of overlapped MS rods with 6mm welding thickness after cleaning the surfaces neatly. Charges includes cost of low hydrogen DC electrode (No. E7018), hire charges of DC arc welding set and tools and plants required, current charges including labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of department officers.

Welding overlapping joints of 50x6mm GI strip with 50mm long, 6mm thick welding on all three sides after doing 2 Nos. bolted joints at the centre as specified after cleaning the surface. Charges includes hire charges of DC arc welding set, current charges, cost of low hydrogen content DC arc welding electrodes( No.E7018) cost of anti corrosive paint etc. complete.

Welding the nodal points (cross joints ) in the trenches at two sides to a thickness of 6mm after cleaning the surface neatly. Charges includes cost of low hydrogen DC electrodes (No. E7018), hire charges of DC welding set and tools and plants required, current charges, labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of departmental officers.

Welding the ground electrode with the main electrode , after cleaning the surface neatly.Charges includes cost of low hydrogen content DC electrodes (No. E7018), hire charges of DC arc welding set, tools and plants, current charges, labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of departmental officers.

Welding one end of the bended GI strip of size 50x6mm with the riser of the already laid earth mat, welding 150mm in length, 6mm thick on both sides & end of the strip & other end of the strip with yard structure at 2 points 50mm apart each welding points having 50mm length and 6mm thick on both sides & end of the strip including the charges for connecting the strip with structure using bolted joints as per the directions of the department officers. Charges includes hire charges of DC arc welding set, current charges, cost of low hydrogen content DC arc welding electrodes(No.E7018) cost of anti corrosive paint etc. complete.

Welding one end of the bended GI strip of size 50x6mm with the riser of the already laid earth mat, welding 150mm in length, 6mm thick on both sides & end of the strip and connecting other end with nuts & bolts if required as per the directions of the department officers. Charges includes hire charges of DC arc welding set, current charges, cost of low hydrogen content DC arc welding electrodes(No.E7018) cost of anti corrosive paint etc. complete.

Welding one end of the GI strip 50x6mm with the structure with a welding length of 50mm & 6mm thickness on both sides & end of the strip and connecting other end with bolts & nuts if required including hire charges of DC arc welding set, current charges, cost of low hydrogen DC arc welding electrodes (No.E7018) cost of anti corrosive paint etc. complete.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Shifting the covering slab of sizes 1000 x 650X 80mm from top of cable trench to a nearby convenient place and replaced to top of cable trench after cable laying work etc complete.as per the direction of department officers at site

Picking 40mm and 6mm broken stone from the existing yard and stacking the same for taking measurements including lead up to 50m as per the direction of departmental officers at site.

Setting up of Stubs or Bolts which are supplied departmentally in correct lines and levels using templates of all types in concrete foundation excluding concreting which are measured seperatelly of paid for removing template after sufficent time etc. complete as per specifications and directions of departmental officers at site

Fixing departmentally supplied 90lbs rail at top of the transformer plinth to lines and levels including all charges for conveying, leveling, cutting to required length and pacing it over base plate, track and welded using spacer and fixing lip angle etc. complete as per specification and directions of departmental officers at site

Supplying and fixing 110mm PVC vent pipe (8Kgf/cm2) & specials such as bends etc with all fittings, including cutting, excavation etc for carrying control cables from marshelling kiosks to main trenches etc. Complete as per the directions of the departmental officers at site.

Supplying and stacking 6mm broken stone for measurements(for yard metalling )

Supplying and stacking 40mm broken stone for measurements(for yard metalling )

Spreading 6 mm broken stone upto a thickness of 10 cm in yard/ pit as per the direction of departmental officers.

Spreading 40 mm broken stone upto a thickness of 15 cm in yard as per the direction of departmental officers.

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