Waste and Residues Historic Records Assessment

There are a variety of wastes and residues awaiting disposal or reuse are stored on nuclear sites. As many are unknown or poorly understood, the first step in its treatment is a study of all available historic data.

Our service

The aim of our historic records assessment is to positively identify the waste or residue stream. This means the correct processing route can then be chosen. Typically, we'll review one or more of the following:

  • "Hard" historic data such as reports, plant records, instructions and drawings
  • "Soft" historic data such as staff memories
  • Accountancy and transport data, used to provide information on where the material arose and whether any analogous material has been processed


We can positively identify the composition of many wastes and residues at an early stage. Sentencing can then be chosen based on the following: 

  • If processible through an existing process, the residue will be recommended for processing via that process
  • If potentially processible by way of an existing method, the residue will be recommended for standard laboratory leach testing to confirm/reject the existing processing route
  • If clearly not processible via any existing process, we'll recommend a process be developed to specify a treatment route and equipment

If there are any residues not positively or fully identified. Or, if composition is unclear, they will need characterisation before they can be transported or assessed for processing.


Email: customers@nnl.co.uk 

Waste Residues Historic Records Assessment