Organic Wastes and Residues

Organic compounds serve a number of purposes across uranium chemical, metal and ceramic processing plants. During the course of operations, they become contaminated with uranic material, preventing off-site disposal.

NNL's Oil Waste Leaching (OWL) Process is fully industrialised and used to treat contaminated oils. We've treated some 200 tonnes of uranium-contaminated oil to date. Better still, the OWL process is continuously refined for a range of oils, including:

  • Water emulsifiable cutting oils
  • Lubricating oils
  • Hydraulic oils/fluids
  • Fomblin (fully fluorinated) oils

Solvent Treatment Advanced Rig (STAR)

The OWL process can treat solvents and oils alike, but the highly volatile/flammable nature of many solvents calls for additional precautions. In response, we've developed the Solvent Treatment Advanced Rig (STAR). STAR is a flameproofed installation operated under an inert atmosphere. A small "module" (100 dm3 volume), STAR allows the treatment of both water miscible and immiscible solvents.

Springfields Washing Machine Process (SWAMP)

We use this process to treat uranium contaminated "combustible wastes" such as ventilation filters, gloves, wipes, flexible plastics, filter cloths, lagging (e.g. Rockwool) and mopheads. We use slightly modified industrial washing machines and a range of chemical treatments, making waste suitable for disposal and landfill.


Uranium is recovered for recycle to fuel or conditioning for storage, while wastes are rendered suitable for disposal.


Barney Whyte, Business Leader
t: 019467 79173
m: 07734 784356