Installation of 3.3 Kv 550 V UG electrical substation for panel no B5. in RVIIA seam for CM Package at Shyamsundarpur colliery under Bankola area.

Amount

Item Description/ Heading

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 land its breaker from pit top to pit bottom of pit no.3 in RVIl 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 RVIl seam) over track line manually. Then from 4L/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 23L/12WD over track line and haulage (v) transportation from 23L/12WD to 30L/9WD manually on floor by crossing 10WD CM belt.

Transportation of One no. of 3.3kV Prabhu breaker 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 (RVIl seam to 23L/12WD (RVIIA seam) over haulage lines to 50L/9WD manually on floor by crossing 10WD CM belt.

Transportation of 2(two) nos. of 550V, 400A FLP breaker from 11 no. substation in RVll seam i)Collection of trolley from RVIIA seam after unloading of HT breakers ii) Loading and transportation from 11no. Substation to 4L/4WD manually on floor.iii)Transportion from 4L/4WD (RVII seam to 23 L/12WD(RVII seam ) over haulage lines to 30L/9WD manually on floor by crossing 10 WD CM belt.

Transporatation of 120 sqmm 95 sqmm 3.3 kv 415 mtr PVC armoured cable by carrying over shoulder from 14 L 9 ED and laying it from 20 L 9 ED sub station along 9 ED to 30 L 9 WD in RVIIA seam and hanging the same

Unloading of transswitch unit and its breakers assembling TSU and three nos of VCB s and ACB at 30 L 9 WD in RVIIA seam and placing them in sequence

Total impact of GST for the purpose of CTC

PRASHANTA KABIRAJ (BID ID -1120641)