Development of a neutron-activated concrete powder reference material

Harms, Arvic; Gilligan, Chris

doi:10.1016/j.apradiso.2009.11.031

Cited by 18 publications

(6 citation statements)

References 9 publications

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“…To meet the needs of RMs in the field of D&D, it is tempting to make one from the samples taken on the construction sites and dedicated to destructive analyses in the laboratory [11], [12]. However, in the field of radiological analysis, often an ILC will allow verifying that the material is suitable for use as RM, from the consensus values obtained.…”

Section: Rm Scarcity and Use Of Ilcs In Radioactivity Measurementsmentioning

confidence: 99%

New approaches for interlaboratory comparisons analysis using dark uncertainty applied to radioactive materials

Crozet

Rivier

Lourenço

et al. 2022

Talanta

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Section: Rm Scarcity and Use Of Ilcs In Radioactivity Measurementsmentioning

confidence: 99%

New approaches for interlaboratory comparisons analysis using dark uncertainty applied to radioactive materials

Crozet

Rivier

Lourenço

et al. 2022

Talanta

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“…As a summary, reliable gamma emitter analysis requires properly maintained and calibrated detector, suitable measurement geometry for the sample size and activity level and coincidence correction especially with short source-to-detector distance. Additionally, the most reliable efficiency calibration is possible using experimental measurements with reference material as close as possible to sample matrix [33]. However, the analysis of 152 Eu is more complicated compared to 60 Co, since 152 Eu decays with electron capture, positron emission and β − sending out X-rays (4 photons), betas and gammas (132 photons).…”

Section: Critical Considerations In the Gamma Emitter Analysismentioning

confidence: 99%

Intercomparison exercise on difficult to measure radionuclides in activated concrete—statistical analysis and comparison with activation calculations

Leskinen

Gautier

Räty

et al. 2021

J Radioanal Nucl Chem

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This paper reports the results obtained in a Nordic Nuclear Safety Research project during the second intercomparison exercise for the determination of difficult to measure radionuclides in decommissioning waste. Eight laboratories participated by carrying out radiochemical analysis of 3H, 14C, 36Cl, 41Ca, 55Fe and 63Ni in an activated concrete. In addition, gamma emitters, namely 152Eu and 60Co, were analysed. The assigned values were derived from the submitted results according to ISO 13,528 standard and the performance assessments were determined using z scores. The measured results were compared with activation calculation result showing varying degree of comparability.

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“…The lack of suitable reference materials in the NORM industries is a significant issue [2,[7][8][9][10][11][12], which also makes initial validation of procedures challenging. Candidate reference soil and sediment materials from British Geological Survey (BGS) were digested using lithium borate fusion and the concentration of 232 Th and 238 U calculated and compared with the reference values as an initial validation of the method.…”

Section: Characterisation Of Reference Materials For Naturally Occurring Radioactive Materialsmentioning

confidence: 99%

“…Additionally, the accurate characterisation of radionuclides is reliant on measurement of certified reference materials (CRM) that ensure quality control and metrological traceability through method validation and calibration of instruments [7]. Owing to the wide range of sample types across industrial sectors, the current lack of CRM is a significant constraint [2,[7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Complete dissolution of solid matrices using automated borate fusion in support of nuclear decommissioning and production of reference materials

Braysher

Russell

Woods

et al. 2019

J Radioanal Nucl Chem

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Accurate measurement of natural and anthropogenic radionuclide concentrations is of critical importance to end users in the nuclear sector to ensure correct classification prior to storage, recycling, reprocessing or disposal. Uncertainties in the characterisation of solid matrices and materials could lead to safety, quality and financial implications. Robust sample preparation methods are vital, in particular effective sample digestion, as under-estimated chemical yield recovery results in a corresponding under-estimation of activity levels. Borate fusion has been proven to effectively digest a range of complex sample matrices in the geosciences but is not used routinely elsewhere. In this study, we describe an automated procedure for borate fusion of multiple matrices encountered in nuclear decommissioning, containing diverse radionuclides over a range of activity concentrations. The impact of digestion flux, sample mass and sample to flux ratios are described, as well as the subsequent separation and measurement techniques. The results contribute to accurate and precise measurement of radionuclides in various matrices, as well as to characterisation of reference materials, providing greater confidence in nuclear industry programmes worldwide.

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Development of a neutron-activated concrete powder reference material

Cited by 18 publications

References 9 publications

New approaches for interlaboratory comparisons analysis using dark uncertainty applied to radioactive materials

New approaches for interlaboratory comparisons analysis using dark uncertainty applied to radioactive materials

Intercomparison exercise on difficult to measure radionuclides in activated concrete—statistical analysis and comparison with activation calculations

Complete dissolution of solid matrices using automated borate fusion in support of nuclear decommissioning and production of reference materials

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