Miscellaneous ILW storage

In parallel with running down and eventual cessation in 1998 of emplace­ment of ILW into the wet silo, an above ground ILW store was brought into operation that allows retrievable storage of ILW in 200 litre drums in shielded vertical channels. Emplacement is carried out by conventional transport flasking operations.

Plutonium-contaminated material (PCM) storage

Waste is generated that has the gamma and beta radioactivity levels in the LLW range but is alpha contaminated. It is contact handleable with precau­tions, and referred to as PCM. There is an operational above ground vault store which accommodates the PCM in 200 litre mild steel drums awaiting further treatment and a final end-point being identified.

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