Tender for Overhauling and Testing of 25 MVA Station Transformer at Wanakbori TPS

This government tender invites qualified electrical contractors and service providers to undertake the complete overhauling, internal inspection, fault finding, rectification, and testing of a 25 MVA, 220/7 KV Apex make Station Transformer at Wanakbori Thermal Power Station, Gujarat. The project is essential for maintaining power station efficiency and reliability. The scope includes detailed testing, internal repairs, and ensuring the transformer meets all safety and operational standards. The tender is issued by Gujarat State Electricity Corporation Limited, a prominent power sector organization, ensuring transparency and adherence to government procurement policies. The project duration is 24 months, with a bid validity of 180 days. Bidders must meet specific eligibility criteria, including technical experience, financial stability, and valid licenses. The estimated project cost is approximately INR 8,50,000, with an earnest money deposit of INR 25,500. This opportunity is ideal for experienced electrical maintenance firms specializing in power transformer servicing and testing, aiming to contribute to Gujarat's power infrastructure stability.

The scope of work includes:

• Complete overhauling of the specified 25 MVA, 220/7 KV station transformer.
• Internal inspection and fault diagnosis.
• Rectification of identified faults and component replacements.
• Testing of the transformer to ensure compliance with operational standards.
• Final testing and commissioning.

The process involves:

1. Initial Inspection: Visual and physical examination of the transformer.
2. Disassembly: Carefully dismantling internal components for detailed inspection.
3. Fault Finding: Identifying issues using diagnostic tools.
4. Rectification: Repairing or replacing faulty parts.
5. Reassembly: Assembling the transformer with quality components.
6. Testing: Performing electrical and operational tests as per standards.
7. Final Inspection & Documentation: Ensuring all work meets specifications and preparing completion reports.

• ✓ Must have valid electrical contractor license and relevant certification.
• ✓ Experience in similar transformer overhauling projects (minimum 3 projects in last 5 years).
• ✓ Financial stability with bank solvency certificate of at least 20% of the estimated project cost.
• ✓ Submission of experience certificates and past project orders.
• ✓ Ability to provide group insurance for all engaged labor.
• ✓ Valid GST registration, PAN, and I.T. No.
• ✓ Adequate technical personnel and tools.
• ✓ Unconditional tender submission.

Criterion	Requirement
Minimum Experience	3 similar projects in last 5 years
Bank Solvency	20% of INR 8,50,000 (INR 1,70,000)
License	Valid electrical contractor license
Insurance	Group insurance for labor
Documentation	All relevant certificates and experience proofs

The transformer must meet the following technical parameters:

Parameter	Requirement
Capacity	25 MVA
Voltage Ratio	220/7 KV
Make	Apex
Testing Standards	IEC/IEEE standards for transformer testing
Testing Equipment	Certified and calibrated instruments

Sequential process: 1. Conduct visual inspection. 2. Disassemble internal components. 3. Diagnose faults using diagnostic tools. 4. Repair/replace faulty parts. 5. Reassemble and perform electrical testing. 6. Document results and obtain approval.

The estimated project cost is INR 8,50,000. The bid submission must include:

Cost Component	Amount (INR)
Tender Fee	INR 1,770
Earnest Money Deposit (EMD)	INR 25,500
Total Estimated Cost	INR 8,50,000

Payment terms: - 10% advance payment upon contract signing. - Progress payments based on milestones. - Final payment after successful testing and commissioning. - Payments are subject to submission of relevant invoices and work completion certificates.

Bidders must follow these steps:

1. Download and review tender documents from the official portal.
2. Submit the technical bid and EMD before the deadline.
3. Attend the bid opening session at Wanakbori TPS.
4. Technical evaluation will be conducted on 24-06-2025 at 15:30.
5. Commercial bids will be opened for qualified bidders.

Timeline	Event
28-05-2025	Start of bid submission
23-06-2025	Bid submission deadline
24-06-2025	Technical evaluation
24-06-2025	Commercial bid opening

**Important:** Ensure all documents are complete and submitted as per instructions. Bidders must have valid digital certificates for online submission.

The evaluation will be based on:

Criteria	Weightage
Technical competence and experience	50%
Financial stability and bid price	30%
Past project performance	20%

Minimum thresholds: - Technical score of at least 70% - Valid licenses and certifications - Demonstrated experience in similar projects

Evaluation factors include quality of work, adherence to safety standards, and bid competitiveness.

Date	Event	Details
28-05-2025	Bid Start Date	Bidders can start submitting bids
23-06-2025	Bid Submission End Date	Last date for bid submission
24-06-2025	Technical Evaluation	Evaluation of technical bids
24-06-2025	Commercial Bid Opening	Opening of financial proposals
24-06-2025	Evaluation Completion	Final decision and award

**Note:** All dates are in DD-MM-YYYY format. Bidders are advised to submit documents early to avoid last-minute issues.

Chief Engineer [C & O], Wanakbori TPS

Contact Method	Details
Email	wtps.se-tech@gebmail.com
Phone	7069003830
Address	Wanakbori Thermal Power Station, Gujarat State Electricity Corporation Limited, Ta: Galteshwar, Dist: Kheda - 388239

Bidders can contact for clarifications or technical support during working hours. Support team is available for assistance with online bid submission and document uploads.

All interested bidders must carefully review the tender documents available for download. The tender process is fully electronic, requiring valid digital certificates for submission. Bidders are encouraged to attend vendor training sessions scheduled every Saturday at (n)code solutions, Ahmedabad. Ensure compliance with all eligibility criteria and submit complete documentation to avoid disqualification. The project aims to enhance power transformer reliability at Wanakbori TPS, contributing to Gujarat's power infrastructure development. This tender offers a significant opportunity for experienced electrical service providers to showcase their expertise in power equipment maintenance and testing.