Nuclear Data Week 2026 (CSEWG/NDAG/NDWG)

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 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.

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.

Jointly hosted by the American Nuclear Society and the Nuclear Energy Institute, NECX brings together utilities, advanced reactor developers, suppliers, regulators, policymakers, investors, engineers, researchers, project leaders, and innovators. Programming includes executive plenaries, technical sessions, and expert-led discussions focused on nuclear deployment, commercialization, investment, and industry growth. Focus areas include advanced nuclear deployment; manufacturing and AI innovation; regulatory affairs; project integration; supply-chain sourcing; workforce development; plant reliability and engineering; and emergency preparedness. The expo-hall Spotlight Stage features presentations on emerging technologies, practical insights, and solutions related to nuclear deployment, operations, innovation, and commercialization.

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 brings together industry and government experts to discuss nuclear security program implementation inspections, lessons learned, industry trends, and Nuclear Regulatory Commission updates. The event includes general sessions, breakout sessions, regional security association meetings, and an exhibit hall featuring security technology and services. Intended participants include technical security experts, advanced reactor developers and security program managers, plant security executives, security program auditors, security training staff, researchers, licensing and regulatory affairs personnel, and vendors and suppliers serving nuclear professionals.

The program spans project execution, nuclear energy, and grids, AI, and infrastructure. Sessions address financing and delivering the U.S. energy buildout; grid capacity, interconnection, transmission, reliability, and cost allocation; and the effects of data-center and industrial demand on power planning. Nuclear topics include power for data centers, first-of-a-kind project cost and delivery, nuclear finance, HALEU and fuel supply, utility choices among large reactors, SMRs, and microreactors, and pathways to SMR deployment. Other sessions cover LNG security, trade, and investment; energy storage and grid-edge technologies; AI in energy operations; and project bankability, permitting, policy, supply-chain, and delivery risks. The program also includes executive roundtables, a project-execution clinic, and an energy startup pitch competition.

The conference covers fundamental, computational, and experimental thermal hydraulics; verification, validation, and uncertainty quantification; plant operations; severe accidents; next-generation reactor technologies; LWR, SMR, and MMR systems; AI/ML for nuclear thermal hydraulics; and special topics. Specific subjects include two-phase flow and heat transfer, boiling and condensation, computational fluid dynamics, experimental methods and instrumentation, CFD benchmarks, licensing challenges, spent-fuel heat transfer, severe-accident modeling, microreactors, molten-salt and liquid-metal reactors, digital twins, and machine-learning model trustworthiness. The program includes an opening plenary, keynote presentations, technical-session blocks, and a closing plenary. The call for papers describes full-paper presentations and digital proceedings, with selected papers considered for publication in special issues of Nuclear Technology, Nuclear Science and Engineering, Nuclear Engineering and Design, and/or Fusion Science and Technology.

Government, industry and market perspectives address domestic fuel supply security; uranium markets; conversion and enrichment; fuel fabrication and supply-chain capacity; government policy and regulatory developments; advanced reactor fuel requirements; investment, contracting and trade; nuclear fuel transportation; and long-term fuel demand. The general session focuses on domestic and global market developments, emerging challenges, future fuel supply and legislative initiatives. The forum is closed to media.