CANDU fuel manufacturing brings together specialized materials, controlled processes and quality activities throughout the production cycle. At CONUAR, this capability supports the fuel supply for Embalse Nuclear Power Plant and provides relevant industrial experience for participation in the nuclear supply chain.
Series production of nuclear fuel elements requires consistent quality across every component and completed assembly. Dimensional accuracy, cleanliness, traceability and repeatability are essential requirements throughout the process, from incoming raw materials to the delivery of finished fuel to the nuclear power plant.
CONUAR has developed and consolidated this capability through technology, established procedures and specialized teams, integrating nuclear component manufacturing, process engineering and quality assurance with a clear industrial objective: maintaining a reliable fuel supply over time.
What Is CANDU Nuclear Fuel?
CANDU nuclear fuel is used in reactors moderated and cooled by heavy water. In its conventional configuration, it uses natural uranium, eliminating the need for an enrichment stage in the fuel supply process.
Another characteristic of CANDU technology is the ability to refuel the reactor during operation. This feature contributes to plant availability and makes the continuous supply of fuel elements an important part of maintaining operational continuity.
How Is a CANDU Fuel Element Designed?
A CANDU fuel element consists of a group of fuel rods containing ceramic uranium dioxide (UO₂) pellets encapsulated in zirconium alloy tubes.
The rods are assembled with structural components to form a complete fuel element, also known as a fuel bundle, designed for the intended reactor service conditions.
Raw material quality, dimensional tolerances and assembly precision are fundamental aspects of the manufacturing process. Each component must meet the established requirements and maintain its conformity when integrated into the finished fuel element.
How Is CANDU Fuel Manufactured at Production Scale?
One of the main industrial challenges in CANDU fuel production is maintaining uniformity throughout an entire production series. This requires controlled processes, specialized equipment and qualified personnel to perform and verify each manufacturing stage.
At CONUAR, manufacturing procedures and workforce training support consistent production criteria from incoming materials through final fuel delivery.
Process repeatability is complemented by records that identify the materials used and document the operations and verifications performed. This combination of production capability and nuclear fuel traceability provides documented evidence of compliance with the quality requirements applicable to each supply.
Quality Assurance Throughout the Manufacturing Process
Quality assurance is integrated into the manufacturing process from its earliest stages. Production activities include dimensional and visual inspections, material controls, non-destructive testing and leak-tightness verification, together with process audits.
These activities provide evidence of product conformity and are supported by traceable documentation. Their integration enables verification of applicable requirements throughout the different stages of production and during final acceptance.
Accumulated manufacturing experience also supports process refinement and stronger working practices, incorporating knowledge gained over time into day-to-day production.
CANDU Fuel for Embalse Nuclear Power Plant
CANDU fuel manufacturing at CONUAR supports the fuel supply for Embalse Nuclear Power Plant and contributes to the operational continuity of Argentina’s nuclear power system.
Maintaining this capability in Argentina means having the infrastructure, technical knowledge and specialized personnel required to support the operation of a strategic nuclear facility. It also contributes to technological autonomy and reduces dependence on external nuclear fuel suppliers.
This experience has consolidated capabilities in nuclear manufacturing, quality control and supply management that form part of CONUAR’s technological expertise and Argentina’s broader nuclear industry.
Industrial Experience for the Global Nuclear Supply Chain
CONUAR’s sustained experience in CANDU fuel manufacturing provides a relevant industrial foundation for participation in the global nuclear supply chain. It demonstrates the ability to manufacture nuclear components under demanding quality requirements, maintain repeatable production processes and support each supply with technical documentation and traceability.
These capabilities provide an industrial foundation for participation in projects, supplies and services associated with CANDU reactors and other nuclear applications, according to the specific requirements of each project.
The knowledge accumulated through manufacturing, process engineering, quality control and inspection also provides a technical foundation for supporting future developments and emerging needs within the nuclear industry.
Explore CONUAR’s nuclear fuel manufacturing capabilities and contact our team for technical inquiries and collaboration opportunities.
