Office for Nuclear Regulation

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Ionising Radiations Regulations 2017

What you need to know - the 'graded approach'

From January 2018, all employers who undertake work with ionising radiations on nuclear premises* are required to either notify, register, or obtain consent via the ONR process in compliance with the Ionising Radiations Regulations 2017.

Of the Ionising Radiation Regulations 2017, employers must comply with:

The above three regulations together represent the UK's transposition of the 'Graded Approach' introduced in the EU Directive 2013/59/EURATOM.

What you need to do


A notification of any relevant work with ionising radiation, in accordance with Regulation 5.

Make a notification


A registration of any registerable practices, in accordance with Regulation 6.

Apply for a registration


One or more applications for consent to carry out a specified practice, in accordance with Regulation 7.

Apply for a consent

Further information

Graded approach

General requirements needed to comply with the safety requirements and criteria.

Find out more


Frequently asked questions that may help guide you.



ONR will charge a small fee in relation to the graded approach

More on charges

* nuclear premises means premises which are or are on: