22nd International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-22)

Joint meeting of the 15th International Topical Meeting on Nuclear Plant Instrumentation, Control & Human-Machine Interface Technologies and the 9th International Symposium on Future I&C for Nuclear Power Plants. Organized by the Human Factors, Instrumentation & Controls Divisions of the American Nuclear Society and the Korean Nuclear Society, it brings together industry leaders, academic researchers, and regulatory experts to explore the state of technology and future directions in nuclear I&C and human factors engineering. The technical program is planned to include peer-reviewed podium presentations, technical panels, and student paper competitions, with accepted papers published in the conference proceedings. Paper areas include advanced sensor technology; online monitoring, diagnostics, and prognostics; autonomous reactor control and operation; cybersecurity in nuclear reactors, I&C, and wireless technologies; digital twins; I&C for advanced reactors, small modular reactors, and integrated energy systems; I&C system reliability; machine learning and artificial intelligence; remote operation, monitoring, and maintenance; robotics; structural health monitoring; large language models in nuclear energy; and verification, validation, and uncertainty quantification. Human-factors areas include design and analysis methods; computerized procedures and digital instructions; human-factors considerations for AI, autonomy, balance of plant, control-room modernization, remote operations, verification and validation, advanced visualization, cybersecurity, and novel concepts of operations; operator studies; human-automation interaction; human performance evaluation; human reliability analysis; interface and alarm design; operating experience; staffing and qualification; task analysis; and workstation design. These are suggested paper topics rather than final session titles.

The technical program solicits new, significant work relevant to the nuclear industry, with summaries and abstracts presented orally. Topics include advanced reactors and power systems; energy storage integration with nuclear plants; fusion; nuclear fuel recycling, waste forms, transmutation and disposal; AI applications in nuclear safety and materials research; nuclear nonproliferation; advanced and additive manufacturing; and thermal hydraulics. Embedded topics include Decommissioning Environmental Sciences and Remote Technology, covering robotics and remote systems, decommissioning, environmental remediation, nuclear cleanup, used-fuel management, and related AI, digital-twin and regulatory topics. Accelerator Applications covers accelerator facilities and design, nuclear data, materials science, medical and industrial applications, security and forensics, and environmental studies. Accepted and presented summaries are slated for publication in ANS Transactions.

The conference covers four technical tracks: SR-1 and spacecraft reactors, including reactor physics, fuels and materials, power conversion, thermal management, controls, testing and civil, commercial, defense, and science mission applications; LR-1 and planetary surface reactors, including lunar and Mars power architectures, deployment, power distribution, and integration with habitats, mobility, ISRU, and science payloads; Dragonfly and radioisotope power systems, including isotope production, fuel fabrication, testing, safety, and mission operations; and building the space nuclear industrial base, including infrastructure, manufacturing and qualification supply chains, regulatory frameworks, safety, standards, workforce, and industrial partnerships. Special programming includes the 2nd Workshop for Fission Instrumentation and Controls for Space, on sensors, actuators, software, and conditioning electronics, and a special session on innovative spacecraft structures and thermal systems for nuclear propulsion and power, including deployable assemblies, vehicle aggregation, in-space assembly, and mission flexibility. Accepted and presented papers and abstracts will be published in the conference proceedings. Submissions are evaluated for originality, methodological rigor, quality of results, and scientific impact.

The conference theme is “Going Critical: Creating a Durable Nuclear Resurgence.” Plenary discussions address how technology, finance, and public policy can sustain nuclear energy momentum, and how public confidence, domestic supply chains, workforce development, investment, and state leadership can support deployment at scale. John Wagner, Laboratory Director at INL, is a featured speaker; the opening plenary also includes U.S. NRC Commissioners Douglas Weaver and Bradley Crowell. The technical program features expert-led presentations and peer-reviewed research on advanced reactors, fuel cycle and waste management, reactor physics, fusion, AI and machine learning, materials science, instrumentation and controls, criticality safety, and robotics. Named session topics include nuclear energy markets, financing and economics; hybrid and integrated energy systems; maritime and data center applications; nuclear safeguards; cybersecurity; molten salt reactor fuels and materials; and advanced/additive manufacturing. Panels address uranium mining remediation, environmental review, digital twins, advanced reactor fuel supply and fabrication, and nuclear deployment pathways.

The technical program covers conventional and emerging power systems, including steam power systems (HRSGs, boilers, and steam turbines), gas turbines, concentrating solar power, geothermal energy, small modular reactors and advanced nuclear technologies, sCO₂ power cycles, advanced ultra-supercritical steam, and hydrogen and bulk thermal energy storage technologies. Topics include additive manufacturing, powder metallurgy hot isostatic pressing, advanced welding, cladding, fabrication processes, design approaches, material and welding qualification, standards development, and regulatory challenges. Component-specific issues include castings, forgings, blades, rotors, and valves. Materials and performance topics include creep, creep-fatigue, stress relaxation cracking, oxidation, corrosion, wear, erosion, high-temperature alloys and steels, failure analysis, life management, and fitness-for-service methodologies. Repair topics include weld repair, rejuvenation heat treatment, surface engineering, and refurbishment solutions. The conference program includes plenary sessions and breakout topical tracks. Accepted papers undergo peer review and are assigned DOIs. EPRI and ASM International jointly organize the conference.

The conference focuses on innovative technologies, research and design advances, and solutions for renewable and sustainable energy, including utility-level systems integration. Selected papers may be considered for publication in an ASME journal. Tracks cover AI for energy systems; heat pump, refrigeration and cryogenic technology; sustainable and resilient buildings; energy storage; hybrid systems and microgrids; solar optics, thermal applications, chemistry and fuels; photovoltaic and electrochemical technologies, including batteries and fuel cells; waste heat recovery, thermal desalination and water harvesting; alternative energy conversion, including geothermal, nuclear, wind, hydro, ocean and wave energy; hydrogen, bioenergy, biofuels and sustainable fuels; combustion, cogeneration and carbon capture, storage and utilization; advanced energy materials and manufacturing; space energy systems and in situ resource utilization; critical mineral recovery and supply chains; data center energy-water and cooling; and sustainability, safety, durability and recyclability of electrochemical storage. The program also includes lightning talks and poster presentations.

Hosted by Oak Ridge National Laboratory for the Department of Energy’s Thermal Energy Recovery & Management Center of Excellence, the workshop focuses on testing, validation, integration, and deployment of high-temperature heat pumps across technology readiness levels. Plenary topics include the U.S. industrial heat-pump landscape, market pathways, technology readiness, economics, deployment pathways, technology advances, R&D priorities, demonstrations, and deployment lessons. Breakout discussions cover OEM roadmaps and product readiness; working fluids, compressors, component supply chains, advanced heat exchangers, and system integration; end-user needs, controls, thermal storage, and grid flexibility; and standards, codes, testing, certification, financing, commercialization, and public-private partnerships. Report-outs and a facilitated discussion address priority needs, gaps, and recommended actions, followed by workshop synthesis on cross-cutting R&D, demonstration, deployment, and partnership priorities.

NARUC’s capstone meeting includes a year-end summary from NARUC President Ann Rendahl, topics across utility sectors, and installation of the organization’s new president and officers. The program covers utility affordability, customer assistance, ratemaking, large-load growth, data centers, demand response, and flexible load; transmission capacity, advanced transmission technologies, permitting reform, and infrastructure investment; coal-plant options, nuclear energy, natural gas, and pipeline safety; and grid resilience, distributed energy resources, virtual power plants, battery storage, and community microgrids. Other sessions address AI-enabled extreme-weather preparedness, cybersecurity in water and wastewater systems, operational technology for gas and water leak detection, telecommunications network transitions, utility data and customer service infrastructure, water infrastructure investment, federal-state energy regulation, and regulatory impacts of proposed permitting legislation. A workshop examines methods for evaluating advanced transmission technologies, including dynamic line ratings, advanced power flow controls, and advanced conductors. The agenda also includes committee business meetings and general sessions on utility infrastructure resilience and community-based resilience investments. Some meetings are closed to nonmembers or restricted to invitees.

The conference covers radioactive-material management and nuclear-facility decommissioning. Its 12 tracks include crosscutting policies and programs; high- and low-level radioactive waste, spent fuel, and long-lived alpha/transuranic waste; nuclear power plant waste and on-site spent-fuel storage; packaging and transportation; decontamination and decommissioning; environmental remediation; communications and workforce; and advanced reactors and fusion. The program highlights the United Kingdom’s nuclear-sector developments, including waste management and decommissioning for legacy sites, new nuclear capacity, small modular reactors, and advanced nuclear deployment. The featured U.S. Department of Energy site, Savannah River Site, focuses on tank waste cleanup, nuclear materials processing, advanced manufacturing, AI, and applied research and development, as well as partnerships among government, contractors, regulators, stakeholders, and surrounding communities.