AMC work of 220/132/33 kV GSS, Chaibasa-I (Ulijhari) for the period from 01.06.2026 to 31.03.2027 i.e. 304 days

Checking and Observation (1. Clamp, connectors & jumpers. 2. Air & Gas Pressure. 3. Batteries & Battery System. 4. Control & Relay Panels. 5. Transformers Oil & Winding temperature, Fans Oil Level, Silica Gel, Oil leakage and Equipment noise.

Preventive/ Routine Maintenance of Grid Sub-station as per schedule provided by Engineer Incharge.

220kV Bay/ 132 kV Bay-Nut bolt tightening, adjustment of contacts (Male/female) cleaning, greasing, mobilization & jelly putting in clamp & connectors, Earthing flat, jumpers and other equipments related with Insulators, Isolators, CT, PT, CB, LA, dropping and panel of a Bay etc. halfyearly. (as per direction of E/I)

33 kV Bay-Nut bolt tightening, adjustment of contacts (Male/female) cleaning, greasing, mobilization & jelly putting in clamp & connectors, Earthing flat, jumpers and other equipments related with Insulators, Isolators, CT, PT, CB, LA, dropping and panel of a Bay Quarterly.

33 kV Half Main Bus Nut bolt tightening, adjustment, cleaning, greasing, mobilization & jelly putting in clamp & Connectors, Earthing flat, jumpers and other equipments related with Insulators, Isolator, PT quarterly.

33 kV Transfer Bus- Nut bolt tightening, adjustment, cleaning, greasing, mobilization & jelly putting in clamp & connectors, Earthing flat jumpers and other equipments related with Insulators, Isolators, PT halfyearly.

132 kV Half Main Bus- Nut bolt tightening, adjustment, cleaning, greasing, mobilization & jelly putting in clamp & Connectors, Earthing flat, jumpers and other equipments related with Insulators, Isolator, PT halfyearly.

132 kV Transfer Bus- Nut bolt tightening, adjustment, cleaning, greasing, mobilization & jelly putting in clamp & Connectors, Earthing flat, jumpers and other equipments related with Insulators, Isolator, PT halfyearly.

220 kV Main Bus- Nut bolt tightening, adjustment, cleaning, greasing, mobilization & jelly putting in clamp & Connectors, Earthing flat, jumpers and other equipments related with Insulators, Isolator, PT halfyearly.

220 kV Transfer Bus- Nut bolt tightening, adjustment, cleaning, greasing, mobilization & jelly putting in clamp & Connectors, Earthing flat, jumpers and other equipments related with Insulators, Isolator, PT halfyearly.

Transformer- Nut bolt tightening, cleaning in clamps & connectors, Earthing flat, jumpers silica gel filling and other equipments related with transformer body. (132/33 KV) halfyearly.

Transformer- Nut bolt tightening, cleaning in clamps & connectors, Earthing flat, jumpers silica gel filling and other equipments related with transformer body.(220/132 KV) halfyearly.

SST - Nut bolt tightening, adjustment, cleaning, clamp & connectors, Earthing flat, jumpers, silica gel filling and other equipments related with SST body quarterly.

Transformer- IR Value measurement (132/33 KV), including SSTs yearly

Transformer- IR Value measurement (220/132 KV) yearly

Transformer & SSTs BDV measurement quarterly.

Circuit Breaker- IR Value measurement (220/132/33 KV) yearly.

CT (of a Bay)- IR Value measurement (220/132/33 KV)yearly.

LA (of a Bay)- IR value measurement (220/132/33 KV) yearly.

PT/CVT (set)- IR Value measurement (220/132/33 KV) yearly.

Measurement & Testing of transmission line using fault locator or any other device (220 KV )

Measurement & Testing of CB and relay using CT Injection Kit or any other device (220KV)

Measurement & Testing of any grid equipment using any kit available in JUSNL or Grid (220KV)

Maintenance / Emergency Maintenance of Grid Substation as per schedule and JOB provided by Engineer In-charge.

Replacement of Nut- bolts (220/132/33 KV)

Replace of jumper (conductor/strip) (33 KV)

Replace of jumper (conductor/strip) (220/132 KV)

Replacement of clamp & connectors/PG/jumper conia (33 KV)

Replacement of clamp & connectors/PG/jumper conia (220/132 KV)

Replacement of female contact (33 KV)

Replacement of female contact (220/132 KV)

Replacement of female contact base (33 KV)

Replacement of female contact base (220/132 KV)

Replacement of Isolator blade (33 KV)

Replacement of Isolator blade (220/132 KV)

Replacement of Isolator blade base (33 KV)

Replacement of Isolator blade base (220/132 KV)

Replacement of Insulators (33 KV)

Replacement of Insulators (220/132 KV)

Replacement of CT/PT junction Box including termination & connection (220/132/33 KV)

Minor repairing of Transformer- Meggering with opening of bushing connectors, checking of PRV, vent pipe & Buchholz relay, oil top-up etc... Including all or any. (132/33 KV)

Minor repairing of Transformer- Meggering with opening of bushing connectors, checking of PRV, vent pipe & Buchholz relay, oil top-up etc... Including all or any. (220/132 KV)

Minor repairing of CT- Meggering, opening of top cover, replacement of Gasket & CT Stud, oil top-up etc... Including all or any (33 KV)

Minor repairing of CT- Meggering, opening of top cover, replacement of Gasket & CT Stud, oil top-up etc... Including all or any (220/132 KV)

Minor repairing of PT- Meggering, opening top cover, replacement of Gasket & PT stud, oil top-up etc...including all or any (33 KV)

Minor repairing of PT/CVT- Meggering, opening top cover, replacement of Gasket & PT stud, oil topup etc...including all or any (220/132 KV)

Minor repairing of CB- Meggering, Gas filling, checking of MCB, contactors, motors, spring and tripping or closing coils, SF6 gas filling etc... Including all or any (220/132/33 KV)

Minor repairing of Isolators- Adjustment of contacts & moving parts etc… (33 KV)

Minor repairing of Isolators- Adjustment of contacts & moving parts etc… (220/132 KV)

Minor repairing of Panel- Looping & wiring of cables, loose contact rectification, replacement of lugs, ferrules etc… (33 KV)

Minor repairing of Panel- Looping & wiring of cables, loose contact rectification, replacement of lugs, ferrules etc… (220/132 KV)

Fixing and replacement of Earthing copper bond/ flat (220/132/33 KV)

Fixing and replacement of Energy meter/ MW meter/ Voltmeter/Ammeter/Relay (220/132/33 KV)

Misc. work of Grid Substation as per schedule and JOB provided by Engineer In-charge

Battery System cleaning and measurment /recording of each cell voltage, sp. Gravity etc. monthly.

Cleaning of Panels (including all 33kV Panels, 132 kV Panels, 220 kV Panels, ACDB, DCDB etc..) monthly

Rectification of lighting and auxiliary power supply in Grid premises

Material/Equipment manual shifting & movement in Grid Premises

Measurement of Earth footing resistance of all earth pits halfyearly.

Supply of Hydra/ Crane (upto 8MT capacity) as per requirement at concerned store and GSS site

Complete overhauling with painting of 150MVA , 50MVA Transformer Cooling Fans with supply of all materials if required

Repair and Overhauling of 3ph Sub-mersible pump including materials, lifting & lay down of Sub-mersible pump from Borewell , repair of water supply pipe all complete job & Transporation cost.

Repair of 220/132kV SF6 Breaker 3PH/1Ph spring charged motor and isolator motor if required

Repair of 33 kV VCB 1Ph spring charge motor if required

Testing of Transformer/ICTs including tan delta test, winding resistance test, turn ration test, magnetic balance test, open ckt and short ckt test, IR & PI etc. ( All test must be performed and report shall be submitted in standard format)

220/132/33 KV Transformer/ICTs

Break down maintenance if required

supply of Emergency Gang with T&P for work like Conductor snapping of main bus

Mobilization/Demobilization of Labour Gang

Laying of control cable

Filtration of transformer oil (if m/c supplied by firm)( for Power transformer,SST,CT and PT)

Erection, connection, testing and commissioning as per direction of E/I

33 kV Vacuum circuit Breaker

132 KV SF6 CB

132 kV CVT/PT

220 kV PT/CVT

Dismantling of following equipments with Crane/Derrick at site including handling the material/ equipment carefully at site including labour charges for all incidental and operational items of work ( Excluding cost of transportation charges from store to site)

33 kV Vacuum circuit Breaker

132 KV SF6 CB

132 kV CVT/PT

220 kV PT/CVT

Transportation of Transformer accessories/fittings, other GSS equipments, transmission line materials inclusive ERS through Truck/Pick-Up (having capacity upto 3MT) including loading, unloading of the materials/equipments in proper packing (before loading) & unpacking (after loading)

Upto First 50kM

50km<distance<500km(Rate per km)

OTDR Analysis of Links (DTPC/ Fibre Optics Application in Relay)

Air Conditioner maintenance

Service charge for indoor and outdoor unit

Gas Filling Charge

AC comperessor supply and installation

Preventive & periodic Mainteance of DG set ( replacement of air and fuel filter, Gasket valve cover, engine oil, coolents etc., including all necessary consumables used in maintenance and healthiness of DG set)

supply of 100 litres diesel for the DG Set , payment will be made as per actual voucher.

Assessment of defects of battery charger at the GSS

Maintenance and replacement of defective parts/equipments of battery charger including battery bank).

Maintenance of CCTV Camera through service engineer

Supply of Consumables viz. Markin cloth, Distilled water, grease, Mobil, Nuts & Bolts, cotton waste, Joute, Petrolium Jelly, Kerosine, WD-40 rust remover etc. Required time to time for O&M works of GSS.

Testing of transformer oil by recognized laboratory including supply of sampling bottle (A mandatory test and it shall be performed at least once in the financial year)

Water content PPM

Contingency ( Including sampling bottle, To&Fro Charges including fooding & lodging)