Repair Maintenance to the 33 KV MRS Yards, Power Transformers, Outdoor and Indoor VCBs and connected items at Dolphin Hill Area under GE Utility I, Visakhapatnam

Amount

M & L for cleaning and servicing of complete HT 33 / 11 KV structure by greasing, cleaning, servicing of jumpers, re-jumpering wherever required, tightening of nuts & bolts etc. including painting with two coats of aluminium paint over a coat of zinc chrome primer on all steel surfaces from main receiving point to distribution bus bar bay structures up to transformers inside MRS complete all as specified and as directed.

M & L for Decarburizing / Cleaning complete 33 KV VCB's including servicing of all Mechanical Gearwheels, Moving Parts and checking all Tripping Mechanism, all electrical connections complete cleaning with petrol and CRC 226 Spray solution to ensure proper decarburizing complete all as specified and as directed.

M & L for carrying out repairs to 3.15 MVA capacity Transformer at Dolphin Hill including dismantling the LT / HT Connections, Earthing, Control Cables carefully from the Transformer installed on Foundation of 33 KV MRS Yard at Dolphin Hill and Loading the 3.15 MVA capacity Transformer weighing minimum 6675 KG by using suitable Crane on to the Transporting Trolley Vehicle, Transporting the unserviceable Transformer on Trolley Vehicle to Workshop from 33 KV MRS Yard at Dolphin Hill, Loading the 3.15 MVA Transformer by using suitable Crane on to the Transporting Trolley Vehicle after completion of Repairs at Workshop, Transporting the unserviceable Transformer on Trolley Vehicle to 33 KV MRS Yard at Dolphin Hill from Workshop and unloading and placing it on the Transformer Foundation carefully complete all as specified and as directed. Notes: [a] Draining out transformer in the suitable capacity of container / drums and keeping it in safe custody for reuse. [b] Opening top cover of the transformer by unscrewing nuts / bolts / washers etc. including disconnecting core assembly from HT / LT bushing and lifting the same gently with the help of crane and taking out from the shell [Container / Body] of the transformer. [c] Visual inspection of entire Core Assembly, Transformer Tank, Core Limbs, OLTC etc., locating the fault / damages. [d] Cleaning the transformer body from inside, removing deposited dirt / sludge / foreign particles etc. from the bottom / body of the transformer, cleaning with CTC and drying up the shell from inside before refilling with the Transformer Oil. [e] Cleaning and washing thoroughly core and serviceable windings of the transformer by hosing down with clean dry oil conforming to IS – 336, removing deposited dirt / sludge / foreign particles from the windings / core through inspection of windings, providing insulations to leads and terminals complete and re-assembling the core including newly winded coils etc.

Notes for Serial Item No. 3 Continued: [f] Heating / drying / baking complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc all as per IS. [g] Lifting and refixing core assembly inside the transformer shell gently and carefully connecting Primary / Secondary / Neutral Terminal Connections to the bushings assembly, fixing of Tap changer including tightening of nuts, bolts, washers of the core to reduce humming noise. [h] Refilling the filtered transformer oil in the shell of transformer complete.[i] Refixing the top cover including replacement of Cork Sheet / Gasket 8 mm thick tightening of nuts / bolts / washers etc. and replacement of Breather with Silica Gel. [i] Connecting Primary / Secondary / Neutral connections etc. [j] The inspection of transformer shall involve Checking of all clamps, nuts, bolts including core bolts & cover fixing bolts, Checking all brazing, joints, Tap heads and connection joints, Checking all jumpers, terminations / connections inside the transformer and Checking the Bulcholtz Relay / Conservator MOG if any. [k] Cranes used for Loading, Unloading of Transformer on to the Transporting Trolley Vehicle and Transformer Foundation shall not be less than 20 Tons. [l] Any damage to insulators / bushes / windings etc. while in the custody of the contractor shall be made good at no extra cost to the Government. The serviceability of the transformer shall be checked and confirmed by the contractor before taking into his custody. [m] M & L for rewinding / re-insulation of HT / LT [Primary / Secondary] Coils, Bushes, Studs, Transformer Oil, Filtration of Oil, Cable Box, replacement of Buchholz Relay / MOG, repair / servicing of OLTC etc. will be measured and paid separately under relevant items of this BoQ.

M & L for overhauling OLTC of 33 KV / 11 KV Transformer at Dolphin Hill of capacity 2500 KVA / 3150 KVA by draining out of Transformer Oil, dismantling of top cover, inspection of moving and fixed contacts of all Three Phases and checking the operation, cleaning and removal of contacts of all the Three Phases and checking the operation, cleaning and removal of all carbon particles, Checking the thickness of leads in the OLTC Board, Moving / Fixed Contacts, inspection of Transition Resistance and replacement of Gasket / Contacts etc., if found damaged, reassembling complete, Filling up of Oil, testing complete all as specified and as directed. Note: Spares will be measured and paid separately

M & L for Filtration of Transformer Oil of transformers installed at various locations to achieve di-electric strength not less than 60 KV at 2.5mm gap as per relevant IS with Portable Filtration Plant, testing of the oil for the di-electric strength before filtration and after filtration complete all as specified and as directed.

Supply and topping up of Transformer Oil with di-electric strength not less than 60 KV in to the Conservator Tank / Body Tank of the Transformer etc. complete all as specified and as directed. Make: Power Oil / Transol / Sabitha Chemicals

M & L for rewinding of HT Tap Winding for 33KV / 11KV [3.15 MVA] Power Transformer at Dolphin Hill HV Coil [Primary Side] of any Capacity / Type by winding defective coils with new copper wire with Kraft Paper insulation as per IS of same gauge and size together with new insulated materials/bracings before placing in to the transformer and assembling the coil with new insulation materials, varnishing and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as specified and as directed. Note: M & L for re-insulation of serviceable coils will be measured and paid separately under relevant items of this BoQ.

M & L for rewinding of HT Tap Winding for 33KV / 11KV [3.15 MVA] Power Transformer at Dolphin Hill LV Coil [Secondary Side] of any Capacity / Type by winding defective coils with new copper wire with Kraft Paper insulation as per IS of same gauge and size together with new insulated materials/bracings before placing in to the transformer and assembling the coil with new insulation materials, varnishing and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as specified and as directed. Note: M & L for re-insulation of serviceable coils will be measured and paid separately under relevant items of this BoQ

M & L for re-insulating windings of transformers of any capacity / size / type by strip opening of HT/LT Coils [i.e. Primary / Secondary Coils] from Core Assembly, safely unwinding the HT/LT Coils [i.e. Primary / Secondary coils] complete, removing the old defective insulation paper and replacing with new DPC insulation to the copper conductor, varnishing the windings with super varnish etc. complete all as specified and as directed.

S & F in repairs Silica Gel into Breather of Transformers complete all as specified and as directed.

Dismantling Existing earthing and providing new Maintenance Free Chemical Earthing complete with 40mm X 3000mm Advance Chemical Earthing Pipe with [Strip in pipe Technology] with 50 KG of Backfill Compound buried directly in ground [Rocky Soil] with earth pit not less than 2.25 m deep below ground level with top edge of Plate not less than 1.50 m below normal ground level connected to existing Copper Earth Strip by means of Stainless Steel bolts, nuts, check nuts and washers all as per IS – 3043 including testing on completion complete all as specified and as directed. The earth resistance shall be measured using fall of potential method as per Para 37 of IS – 3043 & combined resistance should be less than 1 Ohms. Note: The unit rate quoted shall be deemed to include for PCC [1:2:4, Type B1] Pit with RCC 1:2:4, Type B1 Cover, 50 mm thick with 6 Nos, 8 mm dia TMT bars in both ways, MS frame made with 40 X 40 X 6 mm Angle Iron, MS handle 12mm dia, earth work excavation, return filling, removal of surplus soil etc. complete all as specified and as directed.

Earthing complete with Galvanised Steel Earth Plate Electrode 600 X 600 X 6 mm thick burried directly in ground [earth pit not less than 2.25 m deep below ground level] with top edge of Plate not less than 1.50 m below normal ground level connected to 32 X 6mm GI Strip [Earth Lead] and GI pipe 50 mm, Medium Grade for earthing lead protection to the extent of maximum 7.5m, Earth Plate Electrode surrounded by 150mm thick packed layers of Charcoal and Common Salt filled in alternate layers, connected to the Plate by means of GI Bolts & Nuts complete all as per Electrical Plate No. 3 of SSR Part – I, connected to panel / DB including testing on completion including main earthing, Charcoal, Common Salt, PCC [1:2:4, Type B1] Pit with RCC 1:2:4, Type B1 Cover, 50 mm thick with 6 Nos, 8 mm dia TMT bars in both ways, MS frame made with 40 X 40 X 6 mm Angle Iron, MS Funnel with 20 mm bore, medium grade GI Watering pipe, wire mesh, earth work excavation, return filling, removal of surplus soil etc. and disconnecting and taking down existing Earthing of any description complete all as specified and as directed.

S & F in repairs Earth continuity conductor or main earthing lead made of copper Strip of size 32 X 6mm, fixed to wall on batten or recess or chases or burried in ground or fixed to poles or any other indicated situation including drawing through GI Pipe for earthing etc. complete all as specified and as directed.

S & F in repairs Earth continuity conductor or main earthing lead made of GI Strip of size 32 X 6mm, fixed to wall on batten or recess or chases or burried in ground or fixed to poles or any other indicated situation including drawing through GI Pipe for earthing etc. complete all as specified and as directed.

Removing existing graded stone aggregates of any description and size from sub station yard, stacking separately and relaying the serviceable aggregates on the same location, spread and levelled complete all as specified and as directed.

M & L for coarse aggregates of size 40 to 60mm of broken stones or boulders, deposited, spread and levelled in uniform layers and required gradient on the ground of substation complete all as specified and as directed.

Collecting necessary required data & peak load details from IED of any Type / Make from 11 kV HT Panel, Transformer Full Load Details During Peak Hours, Relay Setting Calculations & Co-ordination Study, Unit Protection Setting of Transformers, Feeder wise Settings & Report shall be submitted with Firm Recommendations to Down Stream Power Distribution [Complete 11 KV System] overall co-ordination of time need to be achieved, Adjustment / setting to plug and time multiplier settings of IED, Disconnecting IED of any type / Make from 11 kV HT Panel, cleaning the contacts , IED configuration, Calibration & Testing of all the measuring & protection elements at site, Testing of all the trip functions of the Relays after Final Current Settings by simulating fault current by CT Secondary Injection Test Set, rectification of defects in control wiring for proper tripping of CB during actual system fault conduction through Relay & Tripping Coil complete all as specified and as directed. Note: The Contractor shall arrange necessary Testing Kits, Testing Equipment, Tools etc. and the cost of testing / calibration kits & connected equipments shall deemed to be included in the quoted rate. Testing & tuning shall be carried out onsite with testing equipments in presence of Engineer-in-Charge by Qualified, Licensed Personal to the satisfaction of the Department and test results shall be signed by all concerned and kept on record.

M & L for Repairs / Servicing of 36 KV Outdoor VCBs of Schneider [Areva] make with mechanism and comprising of the following complete all as specified and as directed: [a] Cleaning of Vacuum Interrupter Limbs for Dust, Oxidising and Decarbonising with CTC. [b] Repair / Servicing of Spring Loaded Operating Mechanism [c] Repair / Servicing of Spring Charging Motor [d] Checking, repairing & servicing of Gearbox, Auxiliary Switches, Spring, Limit Switch etc. complete [e] Checking & Repairing Electrical and Mechanical Operations [f] Checking & Repairing Remote Closing and Tripping of VCB from 33KV Control Panel. [g] Lubrication all Moving Parts with Petroleum Jelly & cleaning all Bushing Insulators with CTC [h] Tightening of all Mechanical Connections of Mechanism [i] Tightening of all HV and LV Connection of VCB. Note: Spares required for Servicing / Repairing of 36 KV Circuit Breaker shall be measured and separately under respective items of this BoQ.

Supply only following spares suitable for 36 KV Outdoor Vacuum Circuit Breaker complete all as specified and as directed.

Release Lever[MVIE00123-02] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Handle Block Assembly [MVIE00137-01] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Spring Charging Motor [VDRE00100-06] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Motor Cut-off Switch [MVIE00016-01] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Main Drive Shaft Assembly [MVIE00062-01] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Rachet Wheel [[MVIJ00020-01] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Motor Cut Off Lever Assembly [MVIE00173-01] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Auxiliary Switch 6NO + 6NC [MVIG00242-01] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Trip Coil [ECO27SOG83800FN] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

Closing Coil [ECO27SN117900FN] suitable for 36 KV Outdoor VCBs of Schneider [Areva] make complete all as specified and as directed.

M & L for Control Wiring up to Control Chamber with 1 Core, 2.5 Sq.mm Multistranded Copper Conductor cable with proper ferules & appropriate Lugs including taking down old Wiring of any description complete all as specified and as directed.

S & F in repairs 33 KV CT's Oil immersed outdoor type, 3 Core, Ratio 200-100/5A for Core1 – Class 1, 15VA, Core 2 – 5P10 Class, 15VA, Core 3 – Ratio 200-100/1A, Class PS, Vk/2 < 30mA @ 500V as per existing model and capacity complete all as specified and as directed.

S & F in repairs 33 KV PT's, Oil immersed, outdoor type as per existing model for 33kV/√3 / 110V/√3, 150VA, 50 Hz complete all as specified and as directed.

S & F in repairs 33 KV outdoor lightening arresters expulsion type complete with all fittings , transmission class, discharge capacity 65 Kilo Amps complete all as specified and as directed.

M & L for Jungle/Vegetation cleaning of E/M installations periodically including cutting grass / plants / bushes, shrubs and trees, branches at Dolphin Hill area and removing rubbish to a distance not exceeding 1.50 KM complete all as specified and as directed.

M & L for carrying out following Onsite Tests for 33 / 11 KV Transformer of any capacity with required / suitable testing equipment by Qualified and Licensed Personal, Recording Test Results and submitted to GE to keep on record duly signed by all concerned complete all as specified and as directed: [a] IR Test [b] PI [c] Magnetic Balance Test [d] Ratio test [e] Di-electric Test of Oil [f] Short Circuit Test [g] Vector Group [h] Winding Resistance

M & L for inspecting, checking, servicing of 33 KV Lightening Arrestors by decarbonising of lighting arrestors, tightening all earthing connections and HV connections for proper contact, application of petroleum jelly to the electrical connections, replacement of corroded nuts and bolts etc. complete all as specified and as directed.

M & L for inspecting, checking, servicing of 33 KV Disc / Post Top Insulator including carrying out following activities complete all as specified and as directed: [a] Checking insulator for any cracks & pitting [b] Checking Interlocking Pins for corrosion and replacing if necessary, cleaning / decarbonising with CTC. [c] Replacing the corroded, rusted nuts & bolts of clamps of conductors if necessary. [d] Tightening of all supporting connections.

M & L for Painting of Transformer of 2.5MVA /3.15 MVA Capacity complete with Two Coats of Synthetic enamel paint externally and painting with a coat of Oil Resistant Paint inside the Transformer Shell complete all as specified and as directed.

M & L for Painting of Transformer of 5 MVA Capacity complete with Two Coats of Synthetic enamel paint externally and painting with a coat of Oil Resistant Paint inside the Transformer Shell complete all as specified and as directed.

Supply, Install, Testing and commissioning of REF 615, Feeder Protection and Control Relay, Protections 50, 51, 50N, 51N, 46, 49, 64R, 67, 67N, 27, 59, 59N, 25, 81U, 81O, df/dt, 95, Measurement for 3I, I0, 3U, U0, Kw, KVA, PF, Hz, Kwh, 12 DI + 10 DO, One front RJ45 Port, One Rear RS485 Port for Modbus Protocol, Draw out Type with CT Shorting feature, Small LCD Display feature including taking down old relay of any description complete all as specified and as directed. [Make: Model No. REF615 of ABB Make or its equivalent in Siemens]

Supply, Install, Testing and commissioning of ABB make RET 620/615, Transformer Protection and Control Relay, Protections 87T, 64R [High and Low Impedance], 50, 51, 50N, 51N, 67, 67N, 46, 49, 37, 24, 27, 59, 59N, 81U, 81O, df/dt, 95, Measurement for 3I, I0, 3U, U0, Kw, KVA, Kwh, PF, Hz, 8 DI + 13 DO, 2 RTD Inputs, 1 mA Input, One front RJ45 Port, One Rear RS485 Port for Modbus Protocol, Draw Out with CT Shorting feature including taking down old relay of any description complete all as specified and as directed. [Make: Model No. RET620/615 of ABB make or its equivalent in Siemens]

S & F in repairs Master Trip Relay complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs Auxiliary Relays for Transformer Protection complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs C.B. ON/OFF/TRIP/Trip Circuit Healthy and Unhealthy/Spring Charged complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs 8 Window Annunciator complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs T‐N‐C Switch [Breaker Control Switch] complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs Trip Circuit Healthy Push Button complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs Control Wiring, colour coded complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs Test Terminal Block complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs Local Remote Switch complete all as specified and as directed. Make: ABB / Siemens / Schneider / L & T

S & F in repairs 33 KV tripple pole, Gang Operated Air Break Isolator and Earth Switch, 1250 Amps rating complete all as specified and as directed.

M & L for 33 KV grade Disc type, Disc type insulator, porcelain, vitreous of required size, ball and socket type, white, brown or green complete all as specified and as directed.

M & L for 33 KV grade Pin type, porcelain, vitreous, white, brown or green insulator of required size including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut complete all as specified and as directed.

M & L for carrying out repairs to 5 MVA capacity Transformer at Dolphin Hill including dismantling the LT / HT Connections, Earthing, Control Cables carefully from the Transformer installed on Foundation of 33 KV MRS Yard at Dolphin Hill and Loading the 5 MVA capacity Transformer weighing minimum 10200 KG by using suitable Crane on to the Transporting Trolley Vehicle, Transporting the unserviceable Transformer on Trolley Vehicle to Workshop from 33 KV MRS Yard at Dolphin Hill, Loading the 5 MVA Transformer by using suitable Crane on to the Transporting Trolley Vehicle after completion of Repairs at Workshop, Transporting the unserviceable Transformer on Trolley Vehicle to 33 KV MRS Yard at Dolphin Hill from Workshop and unloading and placing it on the Transformer Foundation carefully complete all as specified and as directed. Notes: [a] Draining out transformer in the suitable capacity of container / drums and keeping it in safe custody for reuse. [b] Opening top cover of the transformer by unscrewing nuts / bolts / washers etc. including disconnecting core assembly from HT / LT bushing and lifting the same gently with the help of crane and taking out from the shell [Container / Body] of the transformer. [c] Visual inspection of entire Core Assembly, Transformer Tank, Core Limbs, OLTC etc., locating the fault / damages. [d] Cleaning the transformer body from inside, removing deposited dirt / sludge / foreign particles etc. from the bottom / body of the transformer, cleaning with CTC and drying up the shell from inside before refilling with the Transformer Oil. [e] Cleaning and washing thoroughly core and serviceable windings of the transformer by hosing down with clean dry oil conforming to IS – 336, removing deposited dirt / sludge / foreign particles from the windings / core through inspection of windings, providing insulations to leads and terminals complete and re-assembling the core including newly winded coils etc.

Notes for Serial Item No. 3 Continued: [f] Heating / drying / baking complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc all as per IS. [g] Lifting and refixing core assembly inside the transformer shell gently and carefully connecting Primary / Secondary / Neutral Terminal Connections to the bushings assembly, fixing of Tap changer including tightening of nuts, bolts, washers of the core to reduce humming noise. [h] Refilling the filtered transformer oil in the shell of transformer complete.[i] Refixing the top cover including replacement of Cork Sheet / Gasket 8 mm thick tightening of nuts / bolts / washers etc. and replacement of Breather with Silica Gel. [i] Connecting Primary / Secondary / Neutral connections etc. [j] The inspection of transformer shall involve Checking of all clamps, nuts, bolts including core bolts & cover fixing bolts, Checking all brazing, joints, Tap heads and connection joints, Checking all jumpers, terminations / connections inside the transformer and Checking the Bulcholtz Relay / Conservator MOG if any. [k] Cranes used for Loading, Unloading of Transformer on to the Transporting Trolley Vehicle and Transformer Foundation shall not be less than 20 Tons. [l] Any damage to insulators / bushes / windings etc. while in the custody of the contractor shall be made good at no extra cost to the Government. The serviceability of the transformer shall be checked and confirmed by the contractor before taking into his custody. [m] M & L for rewinding / re-insulation of HT / LT [Primary / Secondary] Coils, Bushes, Studs, Transformer Oil, Filtration of Oil, Cable Box, replacement of Buchholz Relay / MOG, repair / servicing of OLTC etc. will be measured and paid separately under relevant items of this BoQ.

M & L for overhauling OLTC of 33 KV / 11 KV Transformer at Dolphin Hill of capacity 5000 KVA by draining out of Transformer Oil, dismantling of top cover, inspection of moving and fixed contacts of all Three Phases and checking the operation, cleaning and removal of contacts of all the Three Phases and checking the operation, cleaning and removal of all carbon particles, Checking the thickness of leads in the OLTC Board, Moving / Fixed Contacts, inspection of Transition Resistance and replacement of Gasket / Contacts etc., if found damaged, reassembling complete, Filling up of Oil, testing complete all as specified and as directed. Note: Spares will be measured and paid separately

M & L for rewinding of HT Tap Winding for 33KV / 11KV [5 MVA] Power Transformer at Dolphin hill HV Coil [Primary Side] of any Capacity / Type by winding defective coils with new copper wire with Kraft Paper insulation as per IS of same gauge and size together with new insulated materials/bracings before placing in to the transformer and assembling the coil with new insulation materials, varnishing and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as specified and as directed. Note: M & L for re-insulation of serviceable coils will be measured and paid separately under relevant items of this BoQ.

M & L for rewinding of HT Tap Winding for 33KV / 11KV [5 MVA] Power Transformer at Dolphin Hill LV Coil [Secondary Side] of any Capacity / Type by winding defective coils with new copper wire with Kraft Paper insulation as per IS of same gauge and size together with new insulated materials/bracings before placing in to the transformer and assembling the coil with new insulation materials, varnishing and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as specified and as directed. Note: M & L for re-insulation of serviceable coils will be measured and paid separately under relevant items of this BoQ

M & L for re-insulating windings of transformers of any capacity / size / type by strip opening of HT/LT Coils [i.e. Primary / Secondary Coils] from Core Assembly, safely unwinding the HT/LT Coils [i.e. Primary / Secondary coils] complete, removing the old defective insulation paper and replacing with new DPC insulation to the copper conductor, varnishing the windings with super varnish etc. complete all as specified and as directed.

S & F in repairs HT porcelain bushing for transformers of capacity 2.5 MVA to 5 MVA complete all as specified and as directed.

S & F in repairs LT porcelain bushing for transformers of capacity 2.5 MVA to 5 MVA complete all as specified and as directed.

S & F in repairs HV Gun metal of stud for bushing in transformers of capacity 2.5 MVA to 5 MVA complete all as specified and as directed.

S & F in repairs LV Gun metal of stud for bushing in transformers of capacity 2.5 MVA to 5 MVA complete all as specified and as directed.

S & F Cork / rubber sheet gasket Industrial Grade, heavy duty in transformer joints and covers to arrest any gap and oil leakage complete all as specified and as directed.

M & L for welding of MS metal surfaces of panel boards / structures and other equipments as required as site complete all as specified and as directed. Note: The rate of welding machines, welding rods and connecting accessories shall have deemed to be included with quoted rate and nothing extra shall be paid on this account.

S & F Rolled Mild Steel work conforming to Fe 410-W, Grade-E- 250, Quality-A, cut in rectangular shape as per site requirement for covering cable drain complete all as specified and as directed.

M & L for FRP coating on metal surfaces of LT distribution panel boards for protection against coastal weather complete all as specified and as directed.

S & F in repair Colour Coded LED Phase Indicating Lamps of suitable model complete all as specified and as directed.

M & L for preparation of old painted steel surfaces of any description not other wise described over 10 cm width or girth and applying two coats of synthetic enamel paint complete all as specified and directed.

S & F in repairs Space Heater in HT VCB, 11 KV suitable for operation on 220 Volts, AC Supply complete with necessary wiring and control cable with Toggle Switch complete all as specified and as directed.

S & F in repairs Digital Temperature Indicator along with suitable Thermostat complete all as specified and as directed.

M & L for PCC 1:3:6, Type C-2, using 40mm graded stone aggregate as in Foundation, Fillings, Mass concrete, Footings etc complete all as specified and as directed.

S & F Electrical Sealant Putty (Non setting sealant putty) for packing out cable boxes to prevent the ingress of moisture, sealing around cable runs, blocking holes etc. complete all as specified and as directed.

JAI ENTERPRISES

B5BUILDING SOLUTIONS

Jessica Engineering Works

SRIESWARI ENTERPRISES