On 28 September 2026 the Nuclear Decommissioning Authority updated the industry guidance it had released on 7 December 2021. The page presents a combined way to hold packages of intermediate-level radioactive waste, shortened to ILW, so that temporary storage stays safe.
The document takes in package behaviour and design, how a store is arranged and how conditions inside it are managed, and the running of storage work. It also covers surveillance and checks, care of assets, keeping know-how and records, sustainability, and routines that hold safety, security and fitness for disposal while packages remain in storage for a long stretch.
Sites that must keep ILW packages for a long period now have one updated reference linking design, store conditions, checks and records to safety, security and fitness for disposal.
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