TS ISO 12749-3

TS ISO 12749-3 is a vocabulary standard for nuclear energy and radiological protection. This part focuses on the terminological data used around nuclear installations, processes and technologies, so its role is to align naming and definitions rather than to prescribe design or operating rules.

Technical areas covered by the vocabulary

According to the scope, the vocabulary includes terms used in fuel cycle activities, ex-reactor nuclear criticality safety, analytical methodologies, transport of radioactive materials, materials characterization, radioactive waste management and decommissioning. These are distinct but connected areas within the nuclear lifecycle, and consistent terminology is essential for technical specifications, procedures, training material and communication across disciplines.

Why terminology standardisation matters

In general technical practice, the nuclear field brings together safety, material behaviour, process control and lifecycle management. A vocabulary standard helps reduce ambiguity by giving common terms a shared meaning across organisations and documents. In this part, the emphasis is on the language used in standards related to planning, design, construction, operation and decommissioning of installations involving radioactive materials.

• Provides a common vocabulary framework for nuclear installations and associated processes.
• Includes application areas such as radioactive materials transport and waste management.
• Brings together terminology used in criticality safety, analytical methods and materials characterisation.
• Annex A refers to the methodology used to develop the vocabulary.