Overview
EN ISO 10276:2021 (identical to ISO 10276:2019) specifies requirements for trunnion systems used for tie-down, tilting and/or lifting of packages that transport radioactive material - primarily in the nuclear fuel and spent fuel transport context. The standard addresses design, manufacture, maintenance, inspection and quality management of trunnion systems for transport packages. It does not replace or override applicable international or national regulations for lifting/tie-down or handling in nuclear facilities.
Key topics and requirements
The standard covers these technical subjects and requirements:
- Scope, terms and definitions - standardized vocabulary and symbols for trunnion systems.
- Regulatory context - guidance on relevant regulations (note: it does not supersede legal requirements).
- Design:
- Design methodology and material selection principles.
- Mechanical properties and criteria for material suitability.
- Design loads for different states: assembly, tie-down, lifting and tilting.
- Load cycle and fatigue considerations, brittle fracture evaluation.
- Analytical and FEA-based strength analysis methods and design criteria.
- Manufacture and assembly:
- Dimensional and visual inspections, non‑destructive examination (NDE).
- Mechanical, chemical and static testing during manufacture and assembly.
- Maintenance and inspection:
- Maintenance schedules, periodic inspections for removable and welded trunnions.
- Criteria for surface condition, attachment threads, bolts and feature dimensions.
- Periodic testing, component replacement and repair methods.
- Quality management system requirements to support consistent production, testing and record-keeping.
- Bibliography and normative references supporting technical implementation.
Practical applications
EN ISO 10276:2021 is applicable where robust, auditable practices are required for safe transport of radioactive material. Typical uses:
- Designing trunnions and attachment features for transport casks and packages carrying nuclear fuel or radioactive contents.
- Performing structural analysis and fatigue assessment for lifting/tie-down points using analytical or FEA methods.
- Implementing manufacturing inspection programs, NDE and component testing for trunnions.
- Developing maintenance, periodic inspection and repair procedures for in-service trunnion systems.
- Establishing quality management controls for suppliers and operators involved in package handling and transport.
Who should use this standard
- Nuclear fuel designers and mechanical engineers
- Transport package designers and certification bodies
- Manufacturers and fabricators of trunnion systems
- Maintenance and inspection engineers at utilities and transport operators
- Quality assurance and compliance teams in nuclear logistics
Related standards and notes
- EN ISO 10276:2021 complements, but does not replace, applicable national and international regulations for lifting, tie-down and radioactive material transport. Users should apply this standard alongside regulatory requirements and other ISO/CEN documents relevant to nuclear transport and lifting equipment.