Tender for Overhauling and Maintenance of Power Transformers at Wanakbori TPS
Progress
This government tender offers an exclusive opportunity for experienced electrical contractors and maintenance firms to participate in the overhauling and maintenance of power transformers at Wanakbori Thermal Power Station, Gujarat. The project involves comprehensive transformer overhauling, including oil filtration, gasket replacement, cleaning, and painting, essential for maintaining reliable power supply and infrastructure. With a project duration of 18 months, the tender emphasizes technical excellence, safety standards, and timely execution. Bidders must meet strict eligibility criteria, submit detailed technical and financial proposals, and adhere to the procurement process outlined by the Gujarat State Electricity Corporation Limited. This tender is ideal for companies specializing in power equipment maintenance, electrical engineering, and industrial services, seeking to contribute to Gujarat's power sector development. The procurement process ensures transparency, competitive bidding, and quality assurance, making it a significant opportunity for qualified firms to secure a government contract in the power and energy industry.
Scope Of Work
The scope of work includes:
- Complete overhauling of power transformers at Wanakbori TPS.
- Oil filtration, gasket replacement, and cleaning of transformer components.
- Painting and corrosion protection of transformer parts.
- Attending to oil leaks and ensuring leak-proof operation.
- Conducting necessary tests and inspections to verify transformer health.
- Performing miscellaneous jobs related to transformer maintenance.
The process involves:
- Site preparation and safety assessment.
- Drainage and removal of transformer oil.
- Disassembly and inspection of internal components.
- Gasket and seal replacement.
- Cleaning and repainting of transformer parts.
- Refilling with filtered oil and sealing.
- Testing for oil leaks, insulation resistance, and other parameters.
- Final inspection and commissioning.
| Key Deliverables | Specifications |
|---|---|
| Oil Filtration | High-efficiency filtration units |
| Gasket Replacement | OEM-approved gaskets |
| Painting | Weather-resistant coating |
| Leak Attending | Leak-proof sealing |
| Testing | Insulation and performance tests |
All work must adhere to safety standards and technical guidelines specified in the tender document.
Technical Specifications
The technical specifications include:
| Parameter | Requirement |
|---|---|
| Transformer Capacity | 6.6/0.433kV |
| Oil Filtration | Mineral oil, high-efficiency filtration |
| Gasket Material | OEM-approved rubber or composite |
| Painting Coating | Weather-resistant, anti-corrosive |
| Leak-proofing | Sealing with approved sealants |
| Testing Standards | IEC or equivalent standards |
The process involves sequential disassembly, inspection, replacement, cleaning, and reassembly, followed by rigorous testing to ensure compliance with technical norms.
Financial Requirements
The estimated budget for the project ranges between INR 25 lakhs to INR 40 lakhs, inclusive of all materials, labor, and overheads. The financial breakdown is as follows:
| Cost Component | Estimated Cost (INR) |
|---|---|
| Material & Supplies | 15 lakhs |
| Labor & Skilled Work | 10 lakhs |
| Miscellaneous & Contingency | 5 lakhs |
Payment will be made in installments based on milestones achieved:
- 30% on contract signing
- 40% after completion of disassembly and cleaning
- 30% post successful testing and commissioning
All payments are subject to submission of valid invoices and acceptance of work as per specifications.
Tender Data
Bid Details
Tender Type
Open
Sector
Power and Energy
Tender Fee
₹1,770
Contract Form
Works
Completion Period
18 Months
Currency Type
Single
Bid Submission Start
05-10-2026 12:00:00
Document Download End
27-10-2026 18:00:00
Bid Validity
180 Days
Additional Tender Data
Commercial Details
Tender Category
Service
Bid To RA
No
Item Category
Miscellaneous Works
Authority & Contact
Officer Inviting Bids
Chief Engineer [C & O], Wanakbori TPS
Bid Opening Authority
Chief Engineer [C & O], Wanakbori TPS
Address
Wanakbori Thermal Power Station, Gujarat State Electricity Corporation Limited, Ta: Galteshwar, Dist: Kheda -388239
Contact Details
[email protected] /7069003830
Authority Records
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Documents 1
RFQ-78302 EMD-4.pdf
TENDER_DOCUMENT
Categories
22
Bidding Process
Process Timeline
28-10-2026 15:00
28-10-2026 15:30
Required Forms
Preliminary
Tender fee details –WTPS
User Defined Template-Standard
EMD DETAIL
User Defined Template-Secured
Technical
Technical Bid
User Defined Template-Standard
Commercial
Price Bid Form
Library-Secured
Required Documents
Stage - Preliminary stage
Attach Scanned copy of Tender fee and EMD details.
RequiredStage - Technical Stage
Experience certificate of similar work & copy of past orders executed for similar type of work.(as mentioned in tender document)
RequiredMust be submit financial qualification criteria (As mentioned in tender document).
RequiredDetails of PF Code No.
RequiredCopy of GST Registration No., I.T. No. & PAN Card No.
RequiredList of tools & tackles (as mentioned in tender document)
Attach scanned copy of technical bid with all relevants documents.
RequiredAuthentication of veracity of documents submitted in support of Meeting the Qualifying Requirements. (As mentioned in tender document).
RequiredForm for Declaration for Conflict of Interest among BIDDERS/AGENTS. (As mentioned in tender document).
RequiredForm for Declaration for Relationship of BIDDER With Employee (As mentioned in tender document).
RequiredBidder must be registered in GUVNL VMS portal. (As mentioned in tender document).
RequiredBidder must be submit form no.1 to 6 including integrity pact with duly sign & stamp.
RequiredBidder must be submit UNDERTAKING IN REGARD TO QUOTED PRICE(As mentioned in tender document).
RequiredBidder Must Attach Copy of Electrical Contractor License (as mentioned in tender document)
RequiredForm - Technical Bid
Attach scan copy of Tender documents
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Eligibility Criteria
Bidders must fulfill the following eligibility criteria:
- ✓ Must have experience in transformer overhauling and maintenance.
- ✓ Must submit experience certificates of similar work completed in the last 3 years.
- ✓ Must meet financial qualification criteria as specified in the tender document.
- ✓ Must possess valid GST registration, PAN, and I.T. No.
- ✓ Must have valid electrical contractor license.
- ✓ Must provide details of PF Code No. and tools & tackles.
- ✓ Must submit scanned copies of technical bid documents, including experience certificates, financial statements, and relevant licenses.
- ✓ Must authenticate the veracity of submitted documents.
- ✓ Must be registered on GUVNL VMS portal.
- ✓ Must submit Form no.1 to 6, including integrity pact and undertakings.
| Qualification | Minimum Requirement |
|---|---|
| Experience | 3+ years in transformer maintenance |
| Financials | Turnover of at least INR 50 lakhs in last FY |
| Licenses | Valid electrical contractor license |
All documents must be duly signed, stamped, and submitted before the deadline.
Frequently Asked Questions
Key insights about GUJARAT tender market
What is the scope of work for this tender?
The scope includes overhauling, oil filtration, gasket replacement, cleaning, painting, oil leak attending, and other miscellaneous transformer maintenance tasks for 6.6/0.433kV transformers at Wanakbori TPS. The work ensures optimal transformer performance and safety.
Who is eligible to bid for this tender?
Eligible bidders must have experience in transformer maintenance, possess valid electrical licenses, be GST registered, and meet financial criteria. They must also submit all required documents, including experience certificates, licenses, and technical bid forms.
What is the bid submission process?
Bidders should download tender documents, pay the tender fee, submit technical and financial bids online before the deadline, attend bid opening, and await evaluation. The process emphasizes transparency and compliance with all submission requirements.
What are the key deadlines for this tender?
Bid submission starts on 05-10-2026 at 12:00 PM and ends on 27-10-2026 at 6:00 PM. Technical evaluation occurs on 28-10-2026 at 3:30 PM. Timely submission is critical to participate in the evaluation process.
How can I get support or clarifications?
Support is available via email ([email protected]) and phone (7069003830). Additionally, free vendor training sessions are held every Saturday at GNFC Ltd. for guidance on tender participation and online bidding procedures.