TAGs provide guidance to ONR inspectors on how to interpret and apply the Safety Assessment Principles (SAPs) and Security Assessment Principles (SyAPs). Some TAGs also support the enforcement of Licence Conditions, complementing the Technical Inspection Guides.
Because they cover a wide range of regulatory topics, TAGs are relevant to all ONR Inspectors, regardless of their specific role. They also help licensees and dutyholders understand ONR’s expectations for the technical content of safety cases and security plans.
Each TAG focuses on a specific technical area and is used at the Inspector’s discretion.
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NS-TAST-GD-097 - Criticality Safety Assessment of Transport Packages
Issue 2.1; Review date: June 2030
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NS-TAST-GD-117 - Safety culture assessment and improvement
Issue 1; Review date: June 2028
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NS-TAST-GD-094 - Categorisation of safety functions and classification of structures, systems and components (SSCs)
Issue 2.1; Review date: May 2028
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CNS-TAST-GD-10.3 - Clarity of Command, Control and Communications Arrangements During and Post a Nuclear Security Event
Issue 3.1; Review date: March 2028