Office for Nuclear Regulation

Category: AWE Aldermaston

Atomic Weapons Establishment Aldermaston – Inspection ID: 52480

December 8, 2023 - Executive summary Date(s) of inspection: June 2023 Aim of inspection ONR intends to conduct a one day thematic compliance inspection against Licence Conditions LC8 (warning notices), LC9 (instructions to persons on site) and LC11 (emergency arrangements), in XTC at the Aldermaston Site on the 14 June 2023.  This inspection is aligned to ONR’s Weapons Sub-Division […]


Atomic Weapons Establishment Aldermaston – Inspection ID: 52611

December 8, 2023 - Executive summary Date(s) of inspection: August 2023 Aim of inspection The aim of this intervention is to ensure the licensee has fit-for-purpose arrangements for the management of radioactive waste, including storage and minimisation, and confirm compliance with licence conditions 4 (Restrictions on Nuclear Matter on the Site) and 32 (Accumulation of Radioactive Waste) within the […]


Atomic Weapons Establishment Aldermaston – Inspection ID: 52771

October 17, 2023 - Executive summary Date(s) of inspection: June 2023 Aim of inspection To build ONRs regulatory confidence that the licensee is ready and able to resume operations on the A** Process Line 1 following installation and commissioning of the Thermal Watchdog.  This will support ONRs permission decision for HPCP reference A**-HPX. As part of the inspection ONR […]


Chief Nuclear Inspector publishes annual review of industry performance

September 27, 2023 - Conventional health and safety and cyber security highlighted


Atomic Weapons Establishment Aldermaston – Inspection ID: 52088

August 14, 2023 - Executive summary Date(s) of inspection: May 2023 Aim of inspection To judge the adequacy of AWE’s implementation of its arrangements made under LC 26 from a control of contractors work perspective. Subject(s) of inspection LC 26 – Control and supervision of operations – Rating: GREEN Key findings, inspector’s opinions and reasons for judgement made This […]


Fatality at AWE Aldermaston

July 10, 2023 - Construction incident at Berkshire nuclear licensed site


Atomic Weapons Establishment Aldermaston – Inspection ID: 50461

April 20, 2023 - Executive summary Date(s) of inspection: February 2023 Aim of inspection The aim of this joint intervention is to ensure the AWE Plc has fit-for-purpose arrangements for decommissioning, including post-operational close out (POCO), and confirm compliance with licence condition (LC) 35 (Decommissioning) and environmental permit QB3535DR within the Legacy Production Facility (A**). The inspection is focussed […]


AWE Aldermaston – Inspection ID: 50468

April 19, 2023 - 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 […]


AWE Aldermaston – Inspection ID: 50432

March 21, 2023 - Executive summary Date(s) of inspection: November 2022 Aim of inspection The aim of this intervention is to ensure the licensee has fit-for-purpose arrangements for the management of radioactive waste, including storage and minimisation and confirm compliance with licence conditions 4 (Restrictions on Nuclear Matter on the Site) and 32 (Accumulation of Radioactive Waste) within the Legacy Production Facility […]


AWE Aldermaston – Inspection ID: 50446

March 8, 2023 - Date(s) of inspection: November 2022 Aim of inspection The purpose of this intervention is for the Office for Nuclear Regulation (ONR) to review and examine: Evidence used to inform the Conventional Health and Safety (CHS) risk profile of the XTC’s activities. Risk management evidence used to assess the adequacy of the CHS risk prioritisation process. […]