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Atomic Absorption Spectroscopy: Lab

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Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
12:22

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films

Published on: November 9, 2015

Developments in plutonium waste assay at AWE.

T J Miller1

  • 1AWE, Aldermaston, Reading, Berkshire RG7 4PR, UK. Timothy.Miller@awe.co.uk

Journal of Radiological Protection : Official Journal of the Society for Radiological Protection
|May 21, 2009
PubMed
Summary
This summary is machine-generated.

A new assay technique for low-level plutonium (Pu) in waste was developed. This method, initially for low-density waste, is now being expanded for denser materials, improving nuclear waste management.

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Area of Science:

  • Nuclear Chemistry and Waste Management
  • Radiological Assay Techniques

Background:

  • A 2002 paper introduced a method for assaying low-level plutonium (Pu) in soft drummed waste.
  • This technique allowed the UK's Atomic Weapons Establishment (AWE) to meet Low Level Waste Repository at Drigg (LLWRD) acceptance criteria.
  • The method's initial application was limited to low-density waste due to reliance on Am-241 photon yield.

Purpose of the Study:

  • To review the effectiveness of the assay technique across a large dataset.
  • To present evidence for expanding the technique's application to denser waste streams.
  • To enhance nuclear material accountancy and waste characterization.

Main Methods:

  • Utilized a previously developed assay technique measuring Am-241 photon yield.
  • Applied the technique to assay over 10,000 soft drummed waste packages.
  • Analyzed results to assess applicability to varying waste densities.

Main Results:

  • Successfully assayed a significant volume of low-level plutonium waste.
  • Demonstrated the technique's robustness across numerous waste packages.
  • Identified potential for adaptation to assay denser waste streams.

Conclusions:

  • The assay technique has proven effective for low-level plutonium in soft drummed waste.
  • Further development is warranted to extend its application to denser waste matrices.
  • This advancement supports improved nuclear waste management and regulatory compliance.