France Advances Dismantling of Chinon A2 Reactor

Chinon A2, one of six gas-cooled reactors (Uranium Naturel Graphite Gaz, or UNGG) in France, is a key focus of EDF's immediate dismantling strategy. These six reactors, located at Bugey, Chinon, and St Laurent-des-Eaux, entered service between 1963 and 1972. Chinon A2 is designated as the lead site for this strategy, with the goal of dismantling facilities in the shortest possible timeframe.

A decisive milestone has been reached with the validation of the contractual strategy for dismantling Chinon A2's heat exchangers. This follows over three and a half years of joint studies by teams from EDF's Deconstruction and Waste Projects Department (DP2D) and Cyclife Engineering. This validation enables the launch of the first operational phase for dismantling the world's first UNGG reactor.

The initial operation, pending the entry into force of the dismantling decree, will involve the systematic dismantling of equipment within the four heat exchanger rooms of Chinon A2. These heat exchangers were crucial for transferring heat from carbon dioxide, heated in the reactor core, to the water of the secondary circuit, which then produced steam. The project is expected to take six years, with operations slated to begin in mid-2028, following a public inquiry into the UNGG reactor dismantling strategy scheduled for 2027.

Lessons learned from the dismantling of Chinon A3 reactor heat exchangers are expected to benefit this operation. Stéphanie Proust, EDF Chinon A-AMI project manager, highlighted the significance of this step in preparing for an industrial project that will serve as a benchmark for EDF's entire UNGG program.

In December 2019, EDF and Veolia established Graphitech, a joint venture focused on decommissioning graphite technology reactors. Graphitech's initial objective was to provide EDF with an optimized decommissioning scenario for the Chinon A2 reactor by 2028 and to develop a testing program for evaluating necessary technological solutions. This program commenced in 2022 with a development and qualification phase, utilizing full-scale models to prepare remote-operation tools for the Chinon reactor's decommissioning. Graphitech has also outlined a decommissioning methodology for the remaining five UNGG reactors, aiming to transpose the Chinon A2 methodology where feasible, and identifying additional engineering work where necessary. Graphitech plans to pursue contracts for assisting in the dismantling of gas-cooled reactors in various countries, including France, Italy, Japan, Lithuania, Spain, and the UK.

Nuward SMR Targets European Deployment and Collaboration

Nuward, a wholly-owned subsidiary of EDF Group, is progressing with its small modular reactor (SMR) design, following the completion of its initial design phase. The company plans to develop a series of 10 Nuward SMRs across five European countries. The goal is to commercialize the technology by 2029, begin construction in 2030, and commence initial production by 2035. The Nuward SMR is designed for multi-energy applications, including industrial clusters and district heating, with load-following flexibility.

The project emphasizes a collaborative approach, with discussions already held with stakeholders in Italy, Poland, Belgium, and Finland to foster a strong European alliance. Nuward aims for its SMR to be recognized as a European technology, leveraging existing manufacturing facilities and fuel supply chains. The construction timeline for Nuward SMRs is projected to be 48 months.

The European Industrial Alliance on SMRs is working to accelerate the development and deployment of SMRs in Europe. The alliance targets the operation of the first SMRs in the European Union by the early 2030s, with a broader objective of achieving between 17-53 GW of SMR capacity by 2050. The alliance's objectives include enhancing industrial competitiveness, supporting decarbonization, ensuring strategic independence, and securing energy supply through affordable, clean, and domestically sourced energy.

Regarding the nuclear fuel cycle, representatives from Urenco and Orano stated that Europe should optimize, harmonize, and strengthen its existing fuel cycle for light water reactors. For advanced reactors, there is a need to quickly identify and invest in the necessary industrial capabilities for fuel production. The Nuward project, initially launched in September 2019 by the French Alternative Energies and Atomic Energy Commission, EDF, Naval Group, and TechnicAtome, has evolved its design. The Nuward SMR will deliver 400 MW of power and offer cogeneration options up to approximately 100 MWt, utilizing established nuclear technologies to meet market demands.

Framatome Discusses Modernizing Safety I&C Systems

The American Nuclear Society hosted a Supplier Showcase webinar titled “Modernizing Safety I&C: Practical Strategies and a Path Forward for Analog and Digital Systems.” The event featured two speakers from Framatome: Logan Davenport, supervisor of product development and life cycle maintenance, and Erica Hindle, an I&C safety system software engineer.