Remetalling at selected areas of 110kV, 33kV and 11kV yard and allied works at 110 kV Substation Cherpu.

Picking and collecting 40mm broken stone from the existing live yard after adopting necessary safety measures and stacking in standard stacks outside the yard with lead up to 100m for reuse as per the directions of departmental officers at the site. (Observed Data)

Surface dressing of the ground including removing vegetation and inequalities not exceeding 15 cm deep and disposal of rubbish, lead up to 50 m and lift up to 1.5 m. All kinds of soil.(DSR 2021, 2.28.1)

Supplying and stacking at site 6mm hard broken stone in standard profiles and specifications for measurements etc. complete and as directed by departmental officers includig cost of all materials, labour charges etc. complete

Supplying and stacking at site 40mm hard broken stone in standard profiles and specifications for measurements etc. complete and as directed by departmental officers includig cost of all materials, labour charges etc. complete

Supplying and laying of perforated polythene sheet( PP Wooven fabric) with thickness greater than or egual to 90GSM over the levelled surface of yard metal etc. complete as per the direction of departmental officers

Spreading 6 mm broken stone for required thickness, laying to lines and levels as per drawings and specifications and as directed by departmental officers excluding cost of all materials, labour charges, etc. complete

Removing all foreign particles like soil,rubbish,creepers etc. from already stacked 40mm broken stone by water cleaning as directed by department officers.

Spreading 40 mm broken stone for required thickness, laying to lines and levels as per drawings and specifications and as directed by departmental officers including cost of all materials, labour charges, etc. complete

Fabrication of structures for erecting equipments. The GI & MS angles will be supplied departmentally (as per Transmission data no.70 for substation work)

Removing cover slabs from cable trenches and placing as per the direction of departmental staff

Solid block masonry using pre cast solid blocks (Factory made) of size 30x20x15 cm or nearest available size confirming to IS 2185 part I of 1979 for foundation and plinth with thickness 15cm in: CM 1:6 ( 1 cement :6 coarse sand) etc complete

Plastering with cement mortar 1:4, (1 cement : 4 fine sand) 12 mm thick one coat, floated hard and trowelled smooth for brick walls including cost of all materials and labour etc. complete as per the standard specifications and direction of Board staff.

Welding one end of the GI strip 50x6mm with the riser of the already layed earth matt, with welding length of 150mm & 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. (substation data item No. 46)

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. (as per transmission data 43)

Fitting one additional 2.4m/3m channel cross arm (100*50*6 mm), in existing 11kV DP incl. Conveyance of materials. (Distribution data key no: 171)

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

Filling available excavated earth (Excluding rock) in trenches, Plinth, side of foundation etc, in layers not exceeding 20 cm in depth consolidating each deposited layer by ramming and watering lead up to 50 M lift up to 1.5 M

Taking out /shifting of 3 x 300 sq mm XLPE cables (11 kV) from the trench and secure them properly without any damage as per the instruction of dept. Officers at site (Excluding the excavation) (50% of Transmission DATA for substation works item# 65 (a))

Mounting one 3x300 mm2 XLPE out door cable termination of structures very carefully without causing any damaged to the drilling holes wherever necessary as directed by the departmental officers

UnMounting one 3x300 mm2 XLPE out door cable termination of structures very carefully without causing any damaged to the drilling holes wherever necessary as directed by the departmental officers