Carrying out Preventive / Schedule and breakdown maintenance of 132/33 kV, 2x50 MVA Grid Sub-Station, Chandankyari, Bokaro for the period from 01.06.2026 to 31.03.2027 (i.e., 10 Months).

Preventive/ Routine/Breakdown Maintenance and periodic testing of Grid Sub-station with the help of as, 01 no. Highly Skilled, 02 nos. of skilled , 02 nos. of unskilled as per provided daily, weekly, monthly, quarterly , half yearly & yearly maintenance schedule of various EHT & LT equipments provided by Engineer Incharge & as per direction of Engineer Incharge.

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

Replacement of 132/33kV CT

Replacement of 132/33kV PT

Replacement of 132/33 kV LA

Replacement of 33kV CB Pole

Replacement of 132kV CB Pole

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

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

Material/Equipment manual shifting & movement in Grid Premises

Measurement of Earth footing resistance of all earth pits

Laying of control cable

Break down maintenance

Supply of emergency gang with T&P for work like conductor snapping of main bus.

Supply of Hydra/ Crane (upto 8MT capacity) as per requirement

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

Transportation of materials & equipments through truck/pickup upto 3MT including loading,unloading of the materials.

Upto first 50 km

50km<distance<500km

Transportation of materials & equipments through truck/pickup upto 6MT including loading,unloading of the materials.

Upto first 50 km

50km<distance<500km

Repair of 132kV SF6 Breaker 1Ph spring charged motor if required

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

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

33 kV Vacuum circuit Breaker with support structure and marshalling boxes including grouting of foundation bolts and wiring of cable from pole to pole including termination.

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

132 kV Current transformer, Potential transformer & CVT including cable termination

132 kV Lighting arrestors

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)

132kV Current transformer, Potential transformer & CVT including cable termination.

132 kV Lighting Arrestors

33 kV Vacuum circuit Breaker including pole to pole cable termination

Routine maintenance and gas refilling of air conditioners (1.5/2TR, ACs) and servicing to prevent leakage of condensate water from indoor ACs including top up of Gas as per requirement.

Testing of Transformers/ICTs including Tan Delta Test of all bushing & winding , winding resistance test, turn ratio test, magnetic balance test, short & open circuit test , IR & PI test etc.

132/33KV , 50 MVA Power Transformer

Testing of Transformer oil by recognised laboratory including supply of sampling bottle.

Water content Measurement (PPM)

Total Acidity

Specific Resistance(Resistivity)

Dielectric Dissipation factor(Tan Delta)

Inter Facial Tension(IFT)

Flash Point

Sludge Content

FURAN Analysis

Servicing of 100 KVA Asok Leyland make DG set

Oil Filter for 100 KVA DG Set

Mobil Filter

Air ( Inner + Outer ) Filter

Mobil premium blue 15W40

Coolant inhibitor

Coolant ( Exhibitor Corrosion )

Assesment of defects of battery chargers.

Maintenance and replacement of minor defective parts/equipments of battery chargers

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

Filtration of Transformer oil with Oil filtaration machine.

Wiring of TBC control & Relay Panel including commissioning of panel

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.

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