The Office for Nuclear Regulation (ONR) has closed an improvement notice issued to AWE Plc after the company successfully addressed a safety concern at its Aldermaston site in West Berkshire.
The enforcement was served last October when an explosive component was unintentionally damaged by workers assembling a unit for testing purposes.
The damage was caused when workers failed to follow appropriate procedures when manually handling the component.
The improvement notice required AWE Plc to better plan, oversee and control activities in the Explosive Technology Centre at the site.
The activities being undertaken in that facility cannot lead to any radiological risk. There was no risk to the public or the environment from this incident.
ONR worked closely with AWE Plc throughout the compliance period, conducting regular site visits that included structured discussions, reviewing safety arrangements and observing the implementation of improved procedures.
Tim Allmark, ONR's Head of Regulation for Weapons Sub-Directorate, said: “AWE Plc has constructively and proactively engaged with us throughout the compliance process for this notice.
“The licensee has taken clear and coordinated action to address the identified shortfalls and we are satisfied that it has demonstrated compliance with the notice."
ONR will continue its routine regulatory oversight of the site.