The following are the major activities involved in the transmission projects.

EHV Cable Installation Including Civil Works.

Replacing/Rerouting the Cable (Exposing Cable by Water Jet/Sand Blasting Machine).

Carrying Out Damage Repair of EHV Cable.

The various activities carried out are as follows as per the site condition/client’s requirement.

I. EHV CABLE INSTALLATION IN THE TRENCH/WITH BUND FORMATION.

	Study on existing utilities prior to trench excavation:- Excavation of trial pits, expose exiting utilities and preparation of reports.		The laid Cable shall be covered with approved material (FTB/CBS).
	Construct the road crossing by Horizontal Directional Drilling / Open Cut method.		Install Cable Tiles as mechanical protection.
	Mark the location of the Joint Bay inside the excavated pit and construct joint bay.		Backfilling in layers of 150 MM up to the ground level/required height with suitable materials and compact properly to achieve 95% or above compaction.
	Mark the Trench/Bund base as per the approved drawing and excavate the trench/construct bund base up to the required width and depth/thickness.		Provide warning tape after second layer.
	Install green net inside the Trench/Steel shutter on bund base for CBS/FTB bedding.		Backfilling the Joint Bay after jointing.
	Provide the cable bedding (FTB/CBS) inside the trench/shutter provided on bund base.		Surplus material removal and site cleaning.
	Cable drums shall be shifted and laid.

II. REPLACING/REROUTING THE CABLE (EXPOSING CABLE BY WATER JET/SAND BLASTING MACHINE).

	Identify the Cable to be exposed.		The laid Cable shall be covered with approved material (FTB/CBS).
	Excavate up to RCC cable tiles and remove the tiles.		Install RCC Cable Tiles as mechanical protection.
	Remove the cable covering (CBS/FTB) with the help of water jet/sand blasting machine.		Backfilling in layers of 150 MM up to the ground level with suitable materials and compact properly to achieve 95% or above compaction.
	Expose the cable completely and cut in to small pieces.		Provide warning tape after second layer.
	Remove the cable pieces and clean the trench.		Surplus material removal and site cleaning.
	Prepare the trench by pouring bedding materials to receive the new cable in existing trench / new trench.

III. DAMAGE REPAIR.

	Identify the Cable to be repaired.		After the jointing works reinstatement the Joint Bay with cover slabs.
	Excavate up to RCC cable tiles and remove the tiles.		Install RCC cable tiles as mechanical protection.
	Remove the cable covering (CBS/FTB) with the help of water jet/sand blasting machine.		Backfilling in layers of 150 MM up to the ground level with suitable materials and compact properly to achieve 95% or above compaction.
	Expose the cable up to the required length, cut and remove damaged portion.		Provide warning tape after second layer.
	Construct the new Joint Bay.		Surplus material removal and site cleaning.