Waste Residues Characterisation
NNL provides a service to customers to help them understand and characterise wastes and residues stored on nuclear sites. Characterisation is often a requirement prior to transport or processing.
Inspection and Sampling
Sampling in the field - NNL has extensive experience of material inspection and sampling gained during the assessment of over 40,000 drums and similar items
In-house sampling - over 5000 drums have been sampled and characterised using NNL's purpose built total enclosure which is equipped with a variety of industrial equipment for drum handling
- X -ray diffraction (XRD) analysis for identification of crystalline phases
- Elemental analysis using "particle mapping" by Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX) analysis
- Thermogravimetric Analysis (TGA) and related techniques, for detection and quantification of organic material
- Infra-red (IR) spectroscopy and Mass Spectrometry for the identification of organic compounds
- Chemical testing - in some cases, small-scale chemical tests are performed, followed by a variety of instrumental and chemical analysis using our in-house UKAS accredited Measurement and Analysis team
Bulk physical characteristics include:
- Wet, damp or dry
- Free flowing or "sticky"
- Presence of free liquor, oils, tramp, bags
- Homogeneity or heterogeneity
- Storage container and its condition
Bulk chemical composition:
- Semi-quantitative for major components
- Qualitative for minor components
Potential processing and material handling issues are highlighted at an early stage, avoiding investment in expensive or inappropriate plant and processes.
Barney Whyte, Business Leader
t: 019467 79173
m: 07734 784356