Tender for Fabrication, Removal, Repair & Erection of Metallic Expansion Bellows at Wanakbori TPS

This government tender invites qualified contractors to undertake fabrication, removal, repair, and erection of metallic expansion bellows at Wanakbori Thermal Power Station, Gujarat. The project involves working at various locations within the power plant, specifically on air and flue gas ducts associated with 210 MW boilers of Units 4, 5, 6, and 7. The scope includes ensuring the installation and maintenance of metallic expansion bellows to support efficient power plant operations. The project duration is 24 months, with a detailed timeline for each phase. Bidders must meet specific eligibility criteria, including relevant experience, financial stability, and technical capabilities. The tender process is structured into preliminary, technical, and commercial stages, with clear deadlines and submission guidelines. The estimated project cost is approximately INR 21,28,500, with a bid validity of 180 days. This opportunity is ideal for experienced power sector contractors seeking government projects in Gujarat.

• Fabrication, removal, repair, and erection of metallic expansion bellows at designated locations within Wanakbori TPS.
• Installation of bellows on air and flue gas ducts associated with 210 MW boilers.
• Ensuring proper support and alignment of metallic bellows to prevent duct damage.
• Conducting inspections and testing post-installation to verify functionality.

1. Review project specifications and site conditions.
2. Prepare fabrication and installation plans.
3. Fabricate metallic bellows as per technical drawings.
4. Remove existing bellows and prepare ducts for new installation.
5. Install metallic expansion bellows ensuring proper support.
6. Conduct testing and quality checks.
7. Complete final inspection and handover.

Parameter	Specification
Material	High-grade stainless steel
Diameter	As per duct specifications
Operating Temperature	Up to 600°C
Design Pressure	As specified in technical documents
Compliance	ASME standards

• All work must adhere to safety and quality standards mandated by Gujarat State Electricity Corporation Limited. • Bidders must provide detailed technical and financial proposals, including timelines and resource allocation.

✓ Must have experience in fabrication, installation, and maintenance of metallic expansion bellows or similar power plant components.
✓ Must submit experience certificates and proof of past completed projects.
✓ Financial stability with bank solvency certificate of at least 20% of the estimated project value.
✓ Valid license for contract labor and GST registration.
✓ Submit technical bid along with relevant documents including tools, personnel, and safety measures.

Qualification	Minimum Requirement
Experience	At least 3 similar projects in power plants
Bank Solvency	INR 4,25,700 (20% of estimated cost)
Certifications	Valid GST, PAN, I.T. No.
Technical Staff	Qualified supervisors and skilled workers
Documentation	Complete technical and financial documents

**Important:** Bidders must meet all eligibility requirements to qualify for the technical evaluation and subsequent award.

Parameter	Details
Material	Stainless steel alloys conforming to ASME standards
Diameter Range	100mm to 600mm
Temperature Resistance	Up to 600°C
Design Pressure	As per project specifications
Testing	Hydrostatic and pneumatic tests to be conducted

Steps for technical compliance: 1. Review technical drawings. 2. Fabricate bellows as per specifications. 3. Conduct quality assurance tests. 4. Prepare installation and safety documentation. 5. Submit for approval before installation.

All technical work must comply with industry standards and safety regulations to ensure durability and operational safety.

The estimated project cost is INR 21,28,500, with a bid security (EMD) of INR 63,855. Bidders should submit a detailed financial proposal including itemized costs for fabrication, transportation, installation, and testing. The cost breakdown should be aligned with the scope of work and technical specifications. Payment terms will be linked to project milestones, with an initial advance and subsequent payments upon completion of specified phases. The total bid amount must be valid for 180 days from the bid submission deadline. All financial proposals should be submitted electronically through the designated government portal, adhering to the prescribed format and guidelines. The project budget is inclusive of all taxes, duties, and incidental expenses.

1. Download and review tender documents from the official portal.
2. Submit the technical bid and bid fee before the deadline.
3. Attend pre-bid meetings if scheduled.
4. Clarify any doubts through official communication channels.
5. Submit the financial bid within the stipulated time.
6. The bid opening will be conducted as per the schedule.
7. Evaluation of technical bids followed by financial bid opening for qualified bidders.
8. Award notification will be issued to the successful bidder.

Stage	Date & Time	Details
Preliminary stage	08-07-2025 15:00	Evaluation of technical documents
Technical stage	08-07-2025 15:30	Technical bid opening
Commercial stage	To be notified	Final evaluation and contract award

**All submissions must be complete and adhere to the specified deadlines.**

Bids will be evaluated based on the following criteria:

Criteria	Weightage
Technical competence and experience	50%
Financial proposal	30%
Compliance with technical specifications	20%

Evaluation factors include: - Past project performance - Technical capability of personnel - Financial stability - Quality assurance measures - Compliance with safety standards **Minimum qualifying marks** must be achieved in each category to proceed to the next stage. The highest scoring bid will be selected for award, subject to meeting all eligibility and compliance requirements.

Date	Event	Details
07-06-2025	Bid Submission Start	Bidders can begin submitting bids online
07-07-2025	Bid Submission End	Last date for bid submission at 18:00 hours
08-07-2025	Technical Evaluation	Technical bids evaluated at 15:00 hours
08-07-2025	Technical Bid Opening	Opening of technical bids at 15:30 hours
15-07-2025	Contract Award	Expected date for award notification

**Note:** All deadlines are strict; late submissions will not be accepted.

For queries and support, contact:

• Name: Chief Engineer [C & O], Wanakbori TPS
• Email: wtps.se-tech@gebmail.com
• Phone: 7069003830

Contact Person	Role	Email	Phone
Chief Engineer	Bidding Support	wtps.se-tech@gebmail.com	7069003830

Support is available during working hours for clarifications and technical assistance.

All bidders are encouraged to participate in the free vendor training sessions conducted every Saturday at (n)code solutions, Ahmedabad, to understand the online bidding process. The tender documents are available for download free of cost from the official portal. Bidders must ensure compliance with all technical, financial, and legal requirements to qualify for evaluation. The project aims to enhance the power plant's operational efficiency by installing reliable metallic expansion bellows, contributing to power generation stability and safety.