Rooppur Nuclear Power Plant, Bangladesh: Insulated Flexible ducts for nuclear power plant.
- Shiva Sirohi
- Jun 27
- 2 min read
Project Overview
The Rooppur Nuclear Power Plant (RNPP) is Bangladesh’s first nuclear energy facility, developed under Russian collaboration (Rosatom) and built to the most rigorous safety, engineering, and operational standards in South Asia.
HVAC systems in such installations are not just about comfort, they’re about regulatory compliance, thermal control, and risk mitigation. In 2022, SamcoFlex was selected as the insulated flexible ducting partner to engineer and deliver custom Class ‘O’ insulated flexible ducts for critical HVAC zones at RNPP.
This project highlights SamcoFlex’s ability to work hand-in-hand with consultants and EPC contractors to solve high-complexity, zero-error engineering challenges with tailor-made solutions.
Scope of Work
Product Supplied: SAMCO-‘O’PURE Insulated Flexible Ducts
Application Areas: Control rooms, radiation-sealed corridors, auxiliary HVAC zones
Supply Year: 2022
Scope: Custom manufacturing, technical submittals, third-party pre-dispatch inspection, consultant approvals
Engineering Requirements
The nuclear-grade HVAC zones required ducting solutions that met:
Class ‘O’ Fire Rating as per BS 476 Part 6 & 7
Zero air leakage and thermal integrity
High performance in confined, access-restricted technical spaces
Regulatory compliance for nuclear HVAC infrastructure
Consultant-reviewed documentation and third-party testing
Challenges Faced
Fire Safety and Toxicity Compliance: In nuclear facilities, ducts must resist flame spread, emit minimal smoke, and produce zero toxic fumes—especially in sealed containment and safety shutdown areas.
Airtight Thermal Control: HVAC ductwork had to retain uniform air velocity, thermal insulation, and acoustic damping, with no tolerance for pressure drops or leak-induced energy losses.
Complex Site Routing: Multiple HVAC zones included tight bends, pressure-sealed plenums, and technical shafts, where rigid ducting was unviable and airflow continuity was non-negotiable.
SamcoFlex’s Technical Execution
SamcoFlex worked in direct collaboration with the project’s HVAC consultant, site engineers, and QA/QC teams through all project phases:
Design Coordination & Submittal Approvals
Participated in submittal reviews, design validation, and mock-up evaluations.
Provided fire rating certificates, test reports, and technical datasheets for Class ‘O’ insulated flexible duct compliance
Custom Engineering & Manufacturing
Insulated flexible ducts were tailor-cut in length and diameter to match zone-specific layouts.
Factory-level dimensional checks ensured zero site trimming or reshaping.
Site-Level Engineering Support
Supported installers with routing guidance, ensuring correct bend radii and airflow orientation.
Ensured zero rework due to pre-fitted design compatibility and lightweight installation.
Measurable Results
100% consultant acceptance on first submittal.
Third-party inspection clearance on all supply lots.
Zero leakage recorded during pressure and airflow commissioning.
Successful integration with rigid duct systems, with no dimensional variance.
Approved in final HVAC commissioning report by the site consultant.
Conclusion
The successful deployment of SAMCO-‘O’PURE insulated flexible ducts at the Rooppur Nuclear Power Plant proves that SamcoFlex is not just a product vendor but a strategic HVAC engineering partner. This high-stakes, compliance-intensive project required more than supply it demanded precision collaboration, custom engineering, and nuclear-grade performance.
SamcoFlex continues to be a trusted name for critical HVAC ducting systems, particularly in environments where safety, documentation, and performance are mission-critical.
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If you’re working on a high-stakes infrastructure project and need custom-engineered, Class ‘O’ fire-rated insulated flexible ducts with end-to-end technical support, SamcoFlex can deliver.
Phone: 0120-4507370
Email: sales@samcoflex.com
Website: samcoflex.com
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