REPAIR AND MAINTENANCE TO EXTERNAL ELECTRIFICATION SYSTEM COMPRISING HT OH / UG CABLES, VCB, TRANSFORMERS 4 POLE AND 2 POLE STRUCTURES AND CONNECTED ALLIED WORKS AT AFS BEGUMPET AND ORC ENCLAVE UNDER GE (AF) HAKIMPET

Amount

Excavation in trenches not exceeding 1.5M wide and not exceeding 1.5M in depth and getting out in soft / loose soil for laying of under ground cable and foundation of poles.etc complete all as specified and as directed.

Excavation in trenches not exceeding 1.5M wide and beyond 1.5M in depth and getting out in soft/loose soil for laying of under ground cable and foundation of poles etc complete all as specified and as directed.

Returning filling in including spreading, leveling watering and well ramming in layers not exceeding 25 Cm thick etc complete all as specified and as directed.

Removal of excavated surplus soil not exceeding 50 m and depositing where directed at al level not exceeding 1.5 m above the starting point and complete all as specified and as directed.

Supply and spreading clean dry sand in trenches/ Substation Yard for cushioning all as specified for cable protection in trenches / ducts complete all as specified and as directed. Note: The punned down thickness shall only be measured.

M&L for Precast concrete cable covers , class HV, type 1, flat, size 300 mm x 180 mm x 40 mm for cable protection complete all as specified and as directed.

M&L for road cutting / Hard standing for taking up or laying of LT UG Cable upto a depth of 15cm, after laying of cable well ramming to the excaved soil and repair the excavated portion of the road as existing or by providing suitable mixture of PCC complete all as specified and as directed.

M&L for Plain cement concrete 1:4:8 type D-2 using 40mm graded stone aggregate in foundation of steel poles / struts as specified including necessary form work complete all as specified and as directed.

M&L for Plain cement concrete (1:2:4) type B1 with 20 mm graded aggegate for coping including form work and finishing to all exposed surfaces by using extra cement complete all as specified and as directed.

Taking down unserviceable GI tubing and M&L for 100mm bore galvanized iron light grade pipe for cable protection complete with all fittings fixed to wall or laid in floor/road crossing or on pole complete all as specified and as directed.

All as per Item No 10 above but for 80mm bore complete all as specified and as directed.

Supply and install steel tubular swaged poles complete with cast iron base plate, final taper plug, bolts, nuts and screws as specified type 410SP-55 (11.0 meter long) and including painting with two coats of aluminium paint over one coat of red oxide and black bituminous paint on the hidden surface in foundation including drilling of holes for fixing of D Iron clamp and holes for continous GI earth wire as required complete including dismantling of old unsv steel poles/ PCC Pole/ struts any size complete all as specified and as directed.

Supply and lay XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with stranded aluminium conductor 11000 (Earthed) volts grade, of size 3 core 120 Sqmm complete including taking out the UNSV HT Cable from the trench/surface/pole complete all as specified and as directed.

Supply and lay XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with stranded aluminium conductor 11000 (Earthed) volts grade, of size 3 core 95 Sq mm. complete including taking out the UNSV HT Cable from the trench/surface/pole complete all as specified and as directed.

M&L for Cable termination 11 KV HT (Cold Shrinkable) cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sqmm complete including taking down the failed cable from its position and prepare cable for connect cable jointing kit complete all as specified and as directed.

All as per Item No 15 above but for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 Sq mm complete all as specified and as directed.

M&L for Cable termination 11 KV HT ( Heat Shrinkable) cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sq mm complete including taking down the failed cable from its position and prepare cable for connect cable jointing kit complete all as specified and as directed.

All as per Item No 17 above but for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 Sq mm complete all as specified and as directed.

M&L for Cable termination 11 KV HT ( Heat Shrinkable) cable jointing kit for 11 KV (Earthed) grade cable for Indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sq mm complete including taking down the failed cable from its position and prepare cable for connect cable jointing kit complete all as specified and as directed.

All as per Item No 19 above but for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 Sq mm complete all as specified and as directed.

M&L for cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sqmm complete including taking down the failed cable from its position and prepare cable for connect cable jointing kit complete all as specified and as directed.

All as per Item No 21 above but for 3 core XLPE armoured aluminium conductor cable of size 3 core 50 to 95 Sqmm complete all as specified and as directed.

Supply and fix in repair Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint including dismantling of cross arms of MS channel or angle sections etc complete all as specified and as directed.

Dismantling unserviceable insulators and Supply and fixing for Pin type , porcelain/polymer, vitreous, white , brown or green insulator including one galvanised mild steel spindle , two galvanised mild steel spindle, two galnvanised iron wahers and one galvanised iron nut, 150 mm height,150 mm dia for 11000 volts grade complete all as specified and as directed.

Dismantling unserviceable insulators and S&F for disc type insulator, porcelain / polymer, vitreous 145 mm high and 255 mm dia ball and socket type , white, brown or green with tension clamps for conductors, working pressure 11000 volts complete all as specified and as directed.

Dismantling old unsv ACSR conductor and M&L for ACSR conductor in OH lines of HT/LT/Street light conductor including binding with aluminium wire complete all as specified and as directed.

M&L for Servicing the existing Gang operated Air Break switch, operated from ground, of capacity 200 / 400 Amps, 11 KV, 3 Pole, including greassing, replacing worn out/ rusted knief,connecting copper strip,nuts, bolts, washers, etc. and providing coloured sleaves for jumper connections complete all as specified and as directed.

M&L for switch Air break Gang operated , triple pole , mechanically operated mounted on insulator and steel frame, with operating mechanism worked from ground level, for current rating upto 400 Amps 11000 Volts complete including dismantling of old unsv GOD complete all as specified and as directed.

M&L for Lightning arrestors complete with all fittings, station class, discharge capasity 65 KA, 11000 Volts complete incl dismantling of unsv arrestors complete all as specified and as directed.

Dismantling and removing the unserviceable 11 KV expulsion fuse single pole carefully from 2/4 pole structure and Supply and fix expulsion fuse (DO Fuse) single pole along with post top insulators suitable for 11000 Volts including connecting the same to the supply with necessary fixing material such as aluminium jumper, binding wire etc complete all as specified and as directed.

Taking out unserviceable earthing, M&L for Earthing complete with galvanized steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25 m deep below ground level) with top edge of the plate not less than 1.5 m below normal ground level, connected to galvanized earth strip of size 32.x 6 mm as earth lead, by means of bolts, nuts, check nuts and washers of galvanized iron or steel all as shown in electrical plate No 3 of SSR Part -I , connected to earth testing point including necessary excavation, earth work, PCC pit ,RCC cover, funnel ,watering pipe etc and breaking and removing the unserviceable materials complete all as specified and as directed.

Supply and fix in repair Galvanised iron strip 32x6 mm as earth continuity or main earthing lead fixed to wall / pole / buried in ground etc incl taking out unsv earth strip complete all as specified and as directed.

Decarbonsing/cleaning/Servicing of complete HT VCB/SF6 CB, 11 KV cubicle type, relays including calibration of IDMTL relays through primary and secondary injection method and testing complete re-setting where required and ensuring proper functioning of earth fault and overcurrent relays including removing carbon deposite from contacts points greasing and tightining all fixed and moving contects for smooth functioning including replacement of tripping and closing coils, 10 Volts complete all as specified and as directed. Note : Calibration of relays and primary and secondary injection test shall be conducted by Authorised Company / Manufactures. Certificate of authority shall be produced by the technician, Auth Company. Make : L&T / Siemens / ABB / Crompton

Locating and pin point electric Fault precisely on high voltage (11 KV) under ground cable fault, locating system which is the most advanced system in power cable fault detection combining the best in market technologies in to a single fully automatic centralized setup with high reliability and multi level safety standards complete all as specified and as directed.

Dehydration & Filtration of oil at site in transformers and voltage stabilizer of any capacity installed at various locations by means of mobile type filtration plant with high pressure vaccuum filtration machine to achieve the required breaking capacity and die electric strength of not less than 40 KV for 1 minute at 4 mm Gap, as per relevant IS and topping up of transformer oil into the body / conservator tank of transformer upto required level, including testing and recording the values of di-electric strength of oil before and after filtration at site with transformer oil testing machine complete all as specified and as directed. Note : Transformer oil for topping up will be measured and paid separately .

Supply and fill topping up transformer oil in transformers and stabilizer to make upto the level complete all as specified and as directed. Make : Power oil / Transol GET / Servo or equivalent.

Supply & fixing HT, Bushing insulator with brass spindle, nuts, check nuts & washers etc suitable for outdoor type trasformer of capacity upto 400 KVA including taking down u/s from the transformer complete all as specified and as directed.

Supply & fixing LT, Bushing with brass spindle, nuts, check nuts & washers etc suitable for outdoor type trasformer of capacity upto 400 KVA including taking down u/s from the transformer complete all as specified and as directed.

Taking down existing unserviceable breather from breather of transformer of capacity upto and including 200 KVA and supply and fix Silica Gel breather including sufficient quantity of silica gel complete all as specified and as directed.

Taking down existing unserviceable breather from breather of transformer of capacity above 200 KVA and supply and fix Silica Gel breather including sufficient quantity of silica gel complete all as specified and as directed.

Disconnecting the HT /LT connection, takingout the transformer / voltage stabilizer from its position at any situtation with the help of suitable pulley / crane and transporting the transformer to workshop for carrying out necessary repairs and bringing back and reinstall in its original place of capacity upto 400 KVA complete all as specified and as directed.

Taking out complete core from Transformers/ Voltage stabilizer of capacity upto 400 KVA , cutting and removing burnt out winding and re-winding the same with super enamelled copper conductor of existing gauge using proper insulating materials , applying varnish, drying in heating chamber , re-assembling the transformer as per original and testing on completion complete all as specified and as directed. Note: Shifting of transformers/ voltage stablizer from installed position to civil workshop and back will be measured and paid seperately under relevant items

Disconnecting the HT/LT connections of a defective transformer of any capacity and shifting the trolley mounted mobile type transformer of capacity 200 KVA to the required location with tractor or crane if required and making all necessary HT and LT connections, testing and return back to the original location after completion of transformer repairs and reconnection the same complete all as specified and as directed.

M&L for repair of transformer by draining out the oil from transformer to the required level and storing in cleaned container, opening the top cover and conservator tank from transformer, for rectifying the defects and dismantling and replacing the burnt out LT/HT Bushes and fixing back the same using new oil seal, gaskets, GI nuts, bolts & washers of suitable size making all HT /LT connections as per original, re filling the transformer oil to the required level and testing on completion for capacity upto 400 KVA complete all as specified and as directed. Note. LT / HT bush, transformer oil for topping up will be measured and paid separately as supply only under relevant items.

M&L for trimming of tree branches around HT/LT overhead lines, upto 3m on both sides of overhead lines and depositing where directed at distance not less than 50m complete all as specified and as directed. Note: The items will be measured in sub station wise or in span length of approx 30mtr to 40 mtr.

M&L for cutting, cleaning vegetation and bushes in and around the Sub Station areas complete all as specified and as directed.

M&L for painting 4 pole structure consisting of 11 mtr swaged steel tubular poles complete with cross arms, brackets, clamps etc with one coat of aluminium paint including preparation of old painted surfaces and pasting radium red stickers / paint with 3 lines around the pole and numbering of pole with synthetic enamel whilte paint on black base complete all as specified and as directed.

All as per Item No 47 above but for painting to 2 pole structure complete all as specified and as directed.

M&L for Plain cement concrete (1:2:4) type B1 with 20 mm graded aggegate for plinth and staging of LT Panel Boards/ substn yard area including necessary work for preparation of base work and form work and finishing to all exposed surfaces by using extra cement complete all as specified and as directed.

M&L Brick Work with subclass 'B' bricks, straight or curved on plan, exc 6m mean radius built in CM 1:4 including 15mm thick rendering in CM 1:4 on other than fair faces of brick work including demolition of brick work and plastering at around Panel Boards / Sub Stn yard area complete all as specified and as directed.

Cable route indicators made out of PCC fixed vertically in gound alongwith span of line with mentioning letters indicating type of cable grade on exposed portion including excavation and refilling etc complete all as specified and as directed.

M&L for loose filling of 40 mm graded stone aggregates as in plinths of out door transformer, sub stations, panel boards yard complete all as specified and as directed.

Supply, mix and pouring the Magnesium sulphate either through the existing watering pipe or by making holes sorrounding the earth pit, at the rate of 5Kgs per pit, for charging the earth pit, for improving the ER values including measuring and recording the values complete all as specified and as directed.

Stringing and Fixing Only in position of existing sagged ACSR conductor in OH lines of HT / LT/ street light conductors including binding with aluminium wire complete all as specified and as directed. Note :- The item will be measured in span length. The approx span length is 30 mtr to 40 mtr.

DPS sales and services india (BID ID -3394232)

OM SAI POWER SYSTEMS (BID ID -3381948)

M/S AMRIT DAS MAHAPATRA (BID ID -3394290)