Dry Storage of Spent Nuclear Fuel

Dry storage is an interim management approach in which irradiated nuclear fuel is cooled and shielded in sealed systems, typically after an initial period in wet storage. It supports continued operation, fuel-cycle flexibility, and long-term management while disposal, reprocessing, or repository pathways develop. The field is shaped by regulatory assurance, storage-system integrity, site security, transport interfaces, spent-fuel inventories, and public confidence. National policies differ substantially, but all require demonstrable control of radiological, thermal, structural, and safeguards risks.

The landscape is shifting from short-term capacity relief toward extended-duration stewardship. Regulators and operators are placing greater emphasis on aging management, inspection methods, retrievability, fire protection, extreme-event resilience, cybersecurity, and documented safety cases for storage periods that may exceed original planning assumptions. Standardized canister designs, modular storage concepts, digital records, and improved handling equipment can support operational consistency, but they also create dependencies on qualification evidence, supply-chain reliability, and future compatibility with transport and disposal systems. Public engagement and transparent oversight remain essential because interim storage decisions increasingly intersect with repository siting, decommissioning, and national energy policy.

Artificial intelligence can contribute to dry-storage programs by detecting anomalies in inspection data, prioritizing maintenance, improving image and sensor analysis, and supporting digital records for fuel, containers, and site assets. Machine-learning tools may help identify patterns associated with corrosion, temperature changes, seal performance, or equipment degradation, but their use must remain subordinate to qualified engineering judgment and regulatory requirements. Explainability, data quality, cybersecurity, model validation, human oversight, and continuity of operations are particularly important in nuclear applications. AI should therefore be deployed as a controlled decision-support capability rather than treated as an autonomous safety function.

North America combines extensive operating experience with active attention to extended storage, transportation readiness, and eventual disposal pathways. Latin America is more heterogeneous, with national programs generally focused on strengthening institutional capacity, regulatory capability, and storage infrastructure. Europe places strong emphasis on harmonized safety principles, national responsibility, and the relationship between interim storage and geological disposal, while the Middle East is building nuclear governance and fuel-management capabilities alongside newer reactor programs. Africa’s priorities include regulatory development, skills, financing, and sustainable institutional arrangements. Asia-Pacific contains both mature nuclear operators and expanding programs, making long-duration storage, technology qualification, workforce development, and cross-border knowledge exchange central concerns.

ASEAN members vary widely in nuclear experience, but regional cooperation can support emergency preparedness, regulatory training, and common approaches to radioactive-material control. BRICS countries encompass major nuclear powers and emerging programs, creating opportunities for technical exchange while preserving distinct fuel-cycle and waste policies. The European Union promotes shared safety expectations, reporting, and cooperation, although implementation remains national. G7 members generally have mature regulatory and industrial capabilities and are focused on aging management, resilience, and disposal strategy. GCC states are developing nuclear-sector institutions and should prioritize early spent-fuel governance. NATO members must account for physical protection, security coordination, and resilience while maintaining the civilian regulatory independence required for nuclear safety.

Australia has no commercial power-reactor spent-fuel inventory but maintains specialized radioactive-material governance. Brazil operates nuclear facilities and continues to require robust institutional control of spent fuel and storage interfaces. Canada has substantial experience with reactor fuel management and emphasizes long-term stewardship and disposal planning. China is expanding nuclear capacity and associated fuel-management infrastructure under centralized oversight. France, Germany, Italy, Spain, and the United Kingdom combine mature regulation with different positions on reprocessing, interim storage, decommissioning, and geological disposal. India and Russia maintain broad nuclear fuel-cycle capabilities and distinct national approaches to spent-fuel management. Japan and South Korea prioritize resilience, aging management, and secure storage amid dense populations and significant reactor-related inventories. Mexico operates a smaller nuclear program and must preserve regulatory capability and trained personnel. The United States has extensive dry-storage experience and faces continuing policy, licensing, security, transport, and repository challenges.

Industry leaders should maintain a clear chain of responsibility from fuel discharge through interim storage, transport, and final disposition. They should fund aging-management programs early, preserve retrievability, qualify inspection and repair methods, and keep safety cases current as storage durations evolve. Procurement strategies should include multiple qualified suppliers where practicable, traceable records, spare-part plans, and compatibility with future transport and disposal systems. Operators should strengthen physical protection and cybersecurity together, validate AI tools conservatively, and retain skilled personnel through structured knowledge transfer. Engagement with regulators, host communities, emergency organizations, and the public should be continuous, evidence-based, and transparent about uncertainties and decision points.

This executive summary uses a qualitative synthesis of publicly documented nuclear-safety principles, regulatory practices, government and intergovernmental guidance, national spent-fuel policies, operator disclosures, and established technical literature. The assessment compares recurring decision factors, including storage-system integrity, aging management, security, transport, institutional capability, repository interfaces, and public governance across the specified regions, groups, and countries. It does not estimate commercial value, market size, market share, or future market performance. Conclusions are framed as cross-jurisdictional themes rather than as a substitute for site-specific licensing, safety assessment, or engineering analysis.

Dry storage provides a technically established means of managing spent nuclear fuel after wet cooling, but it is not a replacement for durable national policy and final-disposition planning. Long-term success depends on disciplined aging management, independent oversight, secure sites, qualified personnel, reliable records, and compatibility with future transport and disposal decisions. Regional and national differences will persist, yet the common priorities are clear: preserve safety margins, strengthen institutional continuity, use digital and AI tools responsibly, and maintain public trust through transparent governance. Leaders that treat dry storage as a lifecycle responsibility rather than a temporary capacity solution will be better positioned to manage changing technical, regulatory, and societal conditions.