Emergency Response Team for maintenance of EHV Lines under RVPN Transmission System

SUPPLY PART

Emergency Restoration System (ERS) alongwith all associated accessories/ items as per specification requirements

Description of Work / Item(s)

PERIODIC/ PREVENTIVE MAINTENANCE

400 kV Lines as mentioned at Annexure-B of bid specification

MAJOR BREAKDOWN MAINTENANCE/ EMERGENCY LINE WORKS

Site Survey of Damaged Line Site

Survey for Emergency Line Works

Restoration of Power Supply using ERS

Installation of ERS Arrangement

ERS Tower

Line Hardware & Stringing (on bypass ERS Towers)

765kV Line

400kV Line

220kV Line

132kV Line

Dismantalling of ERS Arrangement

ERS Tower

Line Hardware & de-Stringing (on bypass ERS Towers)

765kV Line

400kV Line

220kV Line

132kV Line

Restoration of Power Supply using Normal Towers / Emergency Line Works/ Line Height Raising Works

Dismantalling of Damaged/ Erected tower material

Dismatalling of damged/ unusable material of damaged Line section

765kV S/C Line

400kV D/C Line

220kV D/C Line

132kV D/C Line

400kV S/C Line

220kV S/C Line

132kV S/C Line

Setting of Template & Stubs/ anchor Bolts

Civil Foundation Works

Excavation

Normal Soil

Murram/ Black Cotton/ Hard/Dense

Soft Rock/ Disintegrated Rock

Hard Rock (with blasting)

Hard Rock (without blasting)

Submerged Hard/ Norma Marine Soil

Reiforcement Steel

Concrete

Erection of Tower

Stringing/ Restringing & Jumpering of Conductor with Hardware & Accessories

765 kV S/C Line (Quad Conductor per Phase configuration)

400 kV S/C Line (Twin Conductor per Phase configuration)

400 kV D/C Line (Quad Conductor per Phase configuration)

400 kV D/C Line (Twin Conductor per Phase configuration)

220 kV Line (Single conductor per Phase configuration)

132 kV Line (Single conductor per Phase configuration)

Stringing/ Restringing & jumpering of Earth-wire/ OPGW with Hardware & Accessories (one earthwire/ OPGW)

765kV Line

Earthwire

400kV Line

Earthwire

220kV Line

Earthwire

132kV Line

Earthwire

New Earthing of Tower

Pipe Earthing

Counterpoise Earthing

LINE REPAIRING WORKS

Strengthning of Tower Leg

Repair of Damaged Tower Earthing (765/400 kV Towers)

Pipe Earthing

Counterpoise Earthing

Replacement of Damaged Tower Earthing (765/ 400 kV Towers)

Pipe Earthing

Counterpoise Earthing

Revetment & Other Repair Works of EHV Lines

Providing and laying cement concrete M-15 grade 1:2:4 with single sized aggregate of nominal size 20 mm including preparing surfaces, shuttering mixing, placing, temping curing and finishing with leads and lifts etc. as per specification and drawings.

Dry stone revetment (including excavation backfilling and levelling)

Random stone masonary with cement sand mortar with (1:6) (incuding cement backfilling and levelling) by surplus excavation earth including pointing (flush and ruled type) with cement sand mortar 1:3.

Back filling and levelling of the volumes enclosed by the revetment walls with excavated earth at locations.

Backfilling with borrowed earth

i) Beyond 50 M upto 100 M

ii) Beyond 100 M

Providing of river shingles behind retaining wall/dry stone crates act as filter.

Ramelex Pvt Ltd (BID ID -3116705)

Ramelex Pvt Ltd (BID ID -3116705)