Office for Nuclear Regulation

AWE Aldermaston – Inspection ID: 50468

Executive summary

Date(s) of inspection:

  • December 2022

Aim of inspection

The aim of this inspection is to sample progress on L1 regulatory issue 10506.

Subject(s) of inspection

  • Leadership & Management for Safety

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

The effectiveness of governance arrangements was sampled at a number of levels within the licensee and was judged to be adequate to deliver outcomes for safety documentation adequacy and currency.

Governance arrangements for delivery of decommissioning outcomes are maturing following a review of extant arrangements. I will sample again in autumn 2023.

The revised internal regulation strategy was judged to be adequate however I will seek further assurance that there is suitable and sufficient focus on conventional health and safety and permissioning.

I will seek further assurance on AWE’s internal challenge of the effectiveness of the internal regulation strategy including sustainable capacity and adequate training and development of capability to deliver outcomes.


I judge that the governance and assurance sampled demonstrated adequate progress by the licensee in delivering actions in regulatory issue 10506.

I judge that this supports routine regulatory attention level for the internal assurance and challenge criteria in ONR-GEN-GD-013, “Guidance on the assignment of dutyholder attention levels”.