Open Power and Energy NPROCURE

Government Tender for Repairing & Rewinding of BHEL 95KV Transformers at Ukai TPS

Q: What is the scope of this government tender?

This tender involves **repairing and rewinding** of BHEL make 95KV Peak 800 mAmp 83 KVA ESP Rectifier Transformers at Ukai TPS. The scope includes disassembly, inspection, rewinding, replacement of components, testing, and final commissioning to ensure the transformers operate efficiently within the power plant. The work aims to maintain the reliability and safety of the 500MW unit no 6.

Q: Who is eligible to participate in this tender?

Eligible bidders must have **experience in transformer repairs**, valid licenses, and financial stability with an annual turnover of at least INR 50 Lakhs. They must submit **payment receipts of tender fee and EMD**, along with technical documentation demonstrating past similar projects. Bidders should also have the necessary technical certifications and safety standards compliance.

Q: What are the key dates and deadlines for this tender?

The **bid submission starts on 04-11-2025 at 10:40 AM** and ends on **21-11-2025 at 6:30 PM**. Evaluation stages are scheduled for **24-11-2025**, with preliminary, technical, and commercial evaluations. The final award is expected shortly after the evaluation process. Bidders must ensure timely submission to avoid disqualification.

Q: How can I submit my bid and what are the documentation requirements?

Bids must be submitted **online via the nProcure portal**. Required documents include **tender fee receipt, EMD receipt, technical bid documents, and certificates**. Physical submission of EMD and tender fee receipts is mandatory within 5 days of bid submission. Ensure all documents are in PDF format with a resolution of 300 dpi or higher and do not exceed 3 MB.

Q: What are the evaluation criteria for selecting the successful bidder?

Bids are evaluated based on **technical competence (40%)**, **financial proposal (30%)**, **past project performance (20%)**, and **adherence to technical specifications (10%)**. Bidders must meet minimum thresholds, including a **70-point technical score**. Cost-effectiveness, experience, and compliance with standards are critical factors in the final decision.

Bid Publish Date

04-Nov-2025, 10:40 am

Bid End Date

06-Dec-2025, 6:30 pm

EMD

₹51,585

Value

₹17,19,494

Location

TAPI , GUJARAT

Progress

Issue04-Nov-2025, 10:40 am

AwardPending

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Tender Type

Open

Sector

Power and Energy

Tender Fee

₹1,770

Contract Form

Works

Completion Period

18 Months

Currency Type

Single

Categories 12

RF PASSIVE COMPONENTS ELECTROSTATIC PRECIPITATOR STATIC CONVERTERS ELECTROMECHANICAL MACHINERY POWER SUBSTATION POWER PROJECT WATER LEVEL RECORDER FLUE GAS TRANSFORMERS RECTIFIERS SWITCH GEAR

This government tender offers a unique opportunity for experienced electrical contractors to participate in transformer repair and rewinding services at Ukai Thermal Power Station. The project involves repairing BHEL make 95KV peak transformers critical for the operation of the 500MW power unit. The tender is issued by Gujarat State Electricity Corporation Ltd., emphasizing safety, quality, and timely completion. Bidders must meet specific eligibility criteria, submit detailed technical and financial proposals, and adhere to the structured tender process. The project duration is 18 months, with a total estimated cost of INR 17,19,494. This tender is ideal for firms specializing in power transformer maintenance, electrical repairs, and power plant servicing, seeking to contribute to Gujarat’s power infrastructure. The process is transparent, with evaluation based on technical competence, cost, and past performance, ensuring fair competition and quality delivery.

Scope Of Work

The scope of work includes:

Disassembly and inspection of existing transformers to identify faults.
Rewinding of the transformers with specified specifications.
Replacement of damaged components and accessories.
Testing and calibration of rewound transformers to ensure compliance with technical standards.
Final installation, commissioning, and performance testing at Ukai TPS.

The process involves the following steps:

Preparation and mobilization of tools and skilled manpower.
Disassembly of existing transformers following safety protocols.
Cleaning and inspection of internal components.
Rewinding process with new winding wires as per specifications.
Replacement of bushings, insulators, and other accessories.
Testing and quality checks including insulation resistance, turns ratio, and load testing.
Reinstallation and commissioning of transformers.

Technical Specifications	Details
Transformer Make	BHEL
Voltage Rating	95KV
Peak Current	800 mAmp
Capacity	83 KVA
Power Unit	500MW Unit no 6

All work must adhere to safety standards and Gujarat State Electricity Corporation Ltd. guidelines. The contractor is responsible for providing all necessary equipment, skilled personnel, and safety measures throughout the project duration.

Technical Specifications

The transformers to be repaired are BHEL make 95KV Peak 800 mAmp 83 KVA ESP Rectifier Transformers, designed for 500MW power units. The technical parameters include:

Voltage Rating: 95KV
Peak Current: 800 mAmp
Capacity: 83 KVA
Design Standards: As per BHEL specifications and Indian electrical standards.

The process involves:

Disassembly, cleaning, and detailed inspection.
Rewinding with specified wire gauge and insulation class.
Replacement of bushings, insulators, and other components.
Testing for insulation resistance, turns ratio, and load performance.
Final installation and commissioning.

All technical work must comply with Gujarat State Electricity Corporation Ltd. standards and safety protocols. The contractor should ensure quality control at each stage, maintaining documentation for verification.

Financial Requirements

The total estimated cost for the project is INR 17,19,494. The financial breakdown includes:

Cost Component	Amount (INR)
Material and components	10,00,000
Labour and skilled manpower	5,00,000
Testing and quality assurance	1,50,000
Miscellaneous expenses	69,494

Payment terms are as follows:

Advance payment: 20% upon contract signing.
Progress payments: 50% based on milestones achieved.
Final payment: 30% after successful commissioning.

Bidders must provide a detailed financial proposal aligned with these terms. All costs should be inclusive of taxes, duties, and other applicable charges.

Documents 2

Tender Notice.pdf

TENDER_DOCUMENT

WT-5041 Tender documents EMD-6.pdf

TENDER_DOCUMENT

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Eligibility Criteria

Bidders must fulfill the following eligibility criteria:

✓ Must have valid registration and licenses to operate in Gujarat.
✓ Must have prior experience in repairing and rewinding power transformers, specifically BHEL make transformers.
✓ Must submit payment receipt of Tender fee (INR 1770) and EMD amount (INR 51,585) in the preliminary stage.
✓ Must attach scanned copies of relevant technical bid documents, including certifications and past project references.
✓ Financially stable with an average annual turnover of at least INR 50 Lakhs in the last 3 years.

Qualification Criteria	Minimum Requirement
Experience in transformer repairs	At least 3 similar projects in the last 5 years
Financial turnover	INR 50 Lakhs annually
Valid licenses	Power sector-specific licenses
EMD and Tender fee	Paid and submitted as per instructions

All submissions must be complete and conform to the specified formats. Non-compliance will lead to disqualification.

Bidding Process

Process Timeline

1. Preliminary stage

08-12-2025 15:00

2. Technical Stage

08-12-2025 15:05

3. Commercial Stage

08-12-2025 15:30