Installation of 3.3kV/550V UG Electrical substation with substation foundation for LHCM package in RVIIA seam at Shyamsundarpur colliery under Bankola area.

Amount

Discription of items

315kVA, 3.3kV/SSOV FLP TSU No.1 Collection of trolleys and lifting to surface from RVILA seam near bonbahal pump to workshop for loading of TSU and its breaker

Dismantling of primary breaker from TSU and loading the same on two sets of trolleys lifted from Dismantling of Primary breaker from TSU and loading underground and transporting the same to pit top for lowering

Dismantling of cage and lowering of transwitch unit and its breaker from pit top to pit bottom of pit no.3 (in RVII seam) and again refitting of cage after lowering

Transportation of transwitch unit and its breaker () from pit bottom of pit no 3 to 41/4WD (in RVII seam) over track line manually. Then from 4L/4WD (in RVII seam) to 91/4WD (in RVII A seam)drift over track line and haulage (iv) then transportation from drift bottom at 9L/4WD to 16L/5WD over track line & haulage (v) transportation from 16L/SWD to 18L/9WD manually on floor.

Assembling of TSU's primary breaker and placing it in 5 position

315kVA, 3.3kV/550V FLP TSU No.2 Collection of trolleys and lifting to surface from RVIIA seam near bonbahal pump to workshop for loading of TSU and its breaker

Dismantling of Primary breaker from TSU and loading the same on two sets of trolleys lifted from underground and transporting the same to pit top for lowering

Dismantling of cage and lowering of transwitch unit and its breaker from pit top to pit bottom of pit no.3 (in RVII seam) and again refitting of cage after lowering

Transportation of transwitch unit and its breaker i) from pit bottom of pit no 3 to 4L/4WD (in RVII seam) over track line manually. Then from 41/4WD (in RVII seam) to 9L/4WD (in RVII A seam)drift over track line and haulage (iv) then transportation from drift bottom at 9L/4WD to 161/5WD over track line & haulage (v) transportation from 16L/5WD to 18L/9WD manually on floor

Assembling of TSU's primary breaker and placing it in 10 position

HT and LT FLP circuit breakers Transportation of 5(Five) no. of 3.3kV FLP breaker from workshop.i) Collection of trolley from RVIIA seam after unloading of TSU.11 ii) Loading and transportation to pit top and lowering the same through pit no.3.iii) Transportation from pit bottom (RVII seam to 16L/5WD (RVIIA seam) over haulage lines to 18L/9WD manually on floor.

Transportation of 6(Six) no. of 550V FLP breaker and 1(One) Nos. of lighting unit from workshop.i) Collection of trolley from RVIIA seam after unloading of TSU.ii) Loading and transportation to pit top and lowering the same through pit no.3.iii) Transportation from pit bottom (RVII seam to 16L/5WD (RVIIA seam) over haulage lines to 18L/9WD manually on floor.

Power circuit from surface CHP substation to UG substation Unreeling from reel at surface, Transportation, laying and hanging on pillar hooks of 150sqmm/120 sqmm 13 3.3KV, 900 mtr PVC armoured cable, transporting from surface and laying the same from CHP substation to Incline mouth to 700m in Incline (appx.900mtr

Unreeling from reel at surface, Transportation of 150sqmm/120 sqmm 3.3KV, 700 mtr PVC armoured cable from surface to Incline mouth to 700m in Incline 14 and further transporting, laying and hanging on pillar hooks from said location via drift top of RVII seam to drift bottom of RVIIA seam and than from 18L/9WD (appx.700mtr total)

CIVIL WORK Recess cutting in hard stone for Electrical sub-station->

Fly ash Brick work(1:6) for Electrical sub-station->

RC(1:2:4) for Electrical sub-station->

Cement Plaster for Electrical sub-station->

Materiais Loading and Unloading for Electrical sub-station

Avg lead of materials upto 250 ft for electrical sub-station

Debris Cleaning for Electrical sub-station->

Lifting of Empty Tub for Electrical foundation

White Washing for Electrical foundation

Roof bolting in Stone for Electrical foundation

Wire getting with carrying and fitting for Electrical toundation

Total impact of GST for the purpose of CTC