Modification work of 132kV S/C Ratangarh- Parasneu Tr. Line bw loc No. 6 and 7 at railway track crossing between railway TP point 3/7 and 3/8 of Ratangarh-Sardarshahar section as deposit work of Ms. Railway (MLIN/22.17) on labour rate contract basis

Detail Survey as per tentative route-

Which includes the following major activities-Pegging of line route, providing of survey pillar at an interval of 3-4 KM in the line route with required jungle clearance for survey, profile preparation of approved route on graph sheet and marking of offset on either side of line, marking of side clearance for hills, sand dunes etc, as per specification and tower scheduling.

Check survey as per approved route of line which includes-

Re-checking of the line route as per approved profile, chainage, tower center marking, pit marking, bisection of angle tower as required at site.

Excavation-

Excavation, excluding back filling, including shoring,shuttering, dewatering, etc. upto the required depth as per foundation specification/drawings.

(i) Any soil, soft rock other than hard rock

(ii) Hard Rock (with blasting subject to permission or without blasting)

SETTING OF TEMPLATE & STUB/ANCHOR BOLT

(A) Setting of template & stub/ anchor bolt & removal after concreting, excluding cost of excavation and concreting but including back filling with excavated/ borrowed earth (with lead & lift) in layers with ramming andwatering as per specification.

(i) Tower including extension +9m

(B) Anchoring of steel in the hard rock foundation and for excavation holes up to 0.5 cum on lift upto 1.5m

CONCRETING:

Providing and laying cement concrete for all types of foundation as per latest ISS:456 including cement, sand, stone aggregate 20mm nominal size,water etc., preparing surfaces, shuttering, mixing, placing, ramming, curing, finishing as per specification and drawings.

(ii) 1:3:6 Mix

(iv) 1:1.5:3 Mix

Cutting, bending, welding of joints if required,fixing and placing of steel reinforcement as per specification and drawings including material.

REVETMENT OF TOWER:

(A) Providing and laying cement concrete including curing, compaction etc. complete using stone aggregate 40 mm nominal size (crusher broken) in foundation plinth, using 1 Cement: 5 Sand: 10 aggregate mix.

(B) Random rubble stone masonary for rivetment in 1:5 cement sand mortar including providing and fixing 100mm dia PCC drain pipe & raised and cut-pointing on stone masonary in 1:3 cement sand mortar excluding excavation but including Back filling inside rivetment using excavated/ borrowed earth (with all lead & lift) in layers not exceeding 20cm in depth & consolidating each deposited layer by ramming and watering.

(D) Cement concrete coping grade 1:2:4(1cement:2coarse sand :4 graded stone aggregate) rounding off edges etc. but excluding the cost of nosing of steps etc. complete for 75mm thick with 20mm thick nominal size aggregate

EARTHING:

(A) Earthing of towers with pipe type earthing excluding the supply of pipes, wires, flats &connectors, but including coke/charcoal, etc.,excavation,augering and backfilling in all types of soil.

ERECTION OF TOWERS:

Erection of super structures including D-shackles,ACD, Hangers, U-Bolts, step bolts, danger plate, phase plate, number plate etc. Also including tack welding of bolts & nuts upto bottom cross arm/beam level including application of Zinc Rich paint

(i) Erection of Tower (with extension upto +9m )

CONDUCTOR STRINGING

(A) Stringing of ACSR Panther including hoisting of insulator string, laying, jointing & tensioning of conductor, clamping with Armour rods and fixing of vibration damper per route KM of the line.

(i) Single conductor

OPGW STRINGING

A. OPGW Stringing (24Fibre)

(i) Stringing of 24 fibre (DWSM) OPGW fibre optic cable including laying, tensioning, clamping, clipping, fixing vibration damper, earth bond etc. up to placement of junction box.

(ii) Installation Hardware set for 24 fibre OPGW fibre optic cabling including all cable fittings & accessories except joint box. (1 set of installation of hardware shall contain all installation hardware fittings as may be required for 1 km of OPGW/approach fibre optic cable)

(iii) Joint box (24 fibre) connecting of all cable terminals & testing of losses through OTDR

RESTRINGING OF CONDUCTOR / EARTH WIRE

(A) Restringing of ACSR Panther conductor: Dismantling of vibration dampers and armour rods, fitting in rollers, de-tensioning, holding & lowering of conductor, de-hoisting of insulator string as required, adding / removing and jointing of conductor, hoisting of insulator string, lifting of conductor into rollers and re-tensioning, jointing, fitting of armour rods and and vibration dampers and clamping per route KM of the line section to be restrung dismantled material not re-used to be deposited in our stores & stacked

(i) Single conductor

Re-stringing of OPGW cable 24 Fibre

DISMANTLING OF TOWERS:-

Dismantling of super structures alongwith extensions, having tack welded Bolt & Nuts, including removing of D shackles, hangers, U-Bolts, step bolts, ACD, Danger plate, number plate, Phase plate of tower including transportation from site to our store and stacking of all material

(A) 132 KV and 220KV S/C & D/C Towers (all types)

DESTRINGING OF CONDUCTOR/ EARTH WIRE:-

(A) Destringing upto ACSR Panther conductor : Dismantling of vibration dampers and armour rods, removal of conductor from clamps and fitting in rollers, detensioning,dehoisting of insulator string as required and collecting the material & depositing the same in our store and stacking.

(i) Single conductor

De- Stringing of OPGW 24 Fibre Dismantling of earth bonds, vibration dampers, declipping and fitting in rollers, detensioning and collecting the material & depositing the same in our store and stacking.

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