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Nuclear Safety (TAGs)

This page contains Technical Assessment Guides (TAGs). These primarily provide guidance to ONR inspectors on the interpretation and application of the SAPs and SyAPs. However, some also contain guidance relevant to principles underlining the enforcement of licence condition compliance, which supplements the Technical Inspection Guides. Thus the TAGs have relevance to all inspectors within ONR, regardless of function. The TAGs also provide information to licensees and dutyholders regarding ONR's expectations of the nature and content of relevant technical elements of safety cases and security plans.

The TAGs provide guidance in particular technical areas, and they are to be used at the discretion of inspectors.

Responsibility for the maintenance of TAGs is shared between ONR's Professional Leads for individual technical areas and the Regulatory and Technical Standards sub programme within ONR's Technical Division. The guides available below are the latest issues. As revised versions are produced they will replace the older versions.

Feedback

Should you have any feedback on our guidance, please email contact@onr.gov.uk

NOTE: ONR operates a robust governance process for the review, and update as appropriate, of our regulatory standards and guidance. As a regulator, we are involved in the management of a range of relevant international standards and guidance, including International Atomic Energy Agency (IAEA) Safety Standards and Security Guidance, and the Western European Nuclear Regulators Association (WENRA) Safety Reference Levels (SRL). We ensure that all relevant expectations are reflected in the appropriate ONR internal guidance once those international documents are formally published.

In some cases, our guidance documents are updated in advance of the stated formal review date (because of a significant change in relevant good practice, updated international standards or guidance, or amendments to UK legislation). In other instances, where we have judged that there have been no changes that would materially affect our guidance and it therefore remains appropriate to continue use of the existing version, then the formal review date may be passed.

Where published documents have passed their formal review date, we confirm that there are no significant changes in relevant good practice, modifications to international standards or guidance, or amendments to UK legislation that might significantly alter the content of that internal guidance. Consequently, this has no impact on our robust regulation and our inspectors continue to hold the industry account against the high standards required under UK law.

Any documents that have passed their review date remain subject to our review processes, as stated on our website, and the review dates will be updated in due course.

Full list of guidance in this series