Office for Nuclear Regulation

Sellafield Site – Inspection ID: 52118

Executive summary

Date(s) of inspection:

  • May 2023

Aim of inspection

The purpose of this inspection was to gain assurance that Special Nuclear Materials (SNM) are compliant with the Ionising Radiations Regulations 2017 (IRR17) and associated Sellafield Limited procedures and standards for work associated with operations within SNM North.

The inspection focussed on the following IRR17 Regulations:

  • Regulation 8 – Radiation risk assessments;
  • Regulation 9 – Restriction of exposure;
  • Regulation 15 – Information, instruction and training; and
  • Regulation 18 – Local rules and radiation protection supervisors for work undertaken within SNM North.

Subject(s) of inspection

  • IRR17 – Rating: Green

Key findings, inspector’s opinions and reasons for judgement made

The inspection was undertaken on 11 May 2023 by the ONR Site Inspector for the   Special Nuclear Materials (SNM) Value Stream   and supported by Radiological Specialist Inspectors.

The inspection comprised a facility visit and discussions with Sellafield Limited personnel, review of records, documents and processes specific to  SNM North.

From my review of the sample of records and discussions with Sellafield Limited personnel, I am satisfied that Sellafield Limited has adequately implemented the corporate arrangements for compliance with IRR17.

I am content that there are no significant gaps in compliance with those requirements of the IRR17 regulations examined, and that progress is being made by Sellafield Limited in the further development of regulation 8 on radiation risk assessment.


I consider that, on the basis of evidence sampled at the time of this inspection, the licensee has implemented its corporate arrangements for compliance with  Ionising Radiations Regulations 2017  at SNM North. I, therefore, consider that an inspection rating of Green (No Formal Action) is appropriate.