The failure of the Replacement Analytical Project illustrates the need to improve asset management at Sellafield. Sellafield is frequently in a race against time to complete work before assets (such as buildings or equipment) reach the end of their life or risks materialise (particularly as changes to planning assumptions can affect many other facilities on the site). Poor asset management caused Sellafield Ltd’s long–term plan for analysing waste to become incoherent: it did not understand what physical state its laboratories were in, or do the right remedial work to address their deterioration. Although Sellafield has resolved some of the maintenance issues which emerged during the COVID–19 pandemic, there is still a growing backlog of maintenance tasks that need to be performed. There are worrying implications for safety: malfunctioning equipment has limited Sellafield Ltd’s ability to retrieve waste from its oldest facilities, while its safety experts have warned that the deteriorating condition of assets is making the site increasingly unsafe. recommendation Alongside the Treasury Minute response to this report, Sellafield Ltd should write to the Committee to explain how it is addressing the deteriorating condition of its assets. This should include information about the specific actions it is taking to increase the productivity of its maintenance teams, and what impact these actions have had, and are expected to have.