Feasibility Study: Gamma Spectrometry of High Activity Waste drums

This study used HPGe detectors to assess 150 types of drums of nuclear waste and 200 different radionuclides. The characterisation of these drums helped ensure that activity levels remained within the allowed range of the CIGEO licence.

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Measurement of 235U enrichment for a variety of Uranium items

In 2006, the Imperial College Reactor Centre conducted a project to measure 235U enrichment in various uranium items due to a lack of robust historical data. Using portable High Resolution Gamma ray Spectrometry (HRGS) equipment and MGAU analysis software, CANBERRA specialists performed non-destructive assays to determine uranium isotope abundances and update inventory records. The project successfully identified 9 natural and 2 enriched uranium items, providing critical data for future storage and treatment decisions.

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Underwater measurement of activated wastes with the SMOPY Probe

In March 2014, the SMOPY probe was used to measure the activity of spent control rods from decommissioned nuclear plants underwater. This ensured compliance with storage facility requirements and regulatory standards while reducing costs and risks associated with waste shipment. The campaign accurately characterized the radioactive waste, providing essential data for safe and efficient storage.

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Activity Depth Profiling of HIFAR Reactor at ANSTO, Lucas Heights, Australia

In 2017, the HIFAR reactor at ANSTO in Australia underwent activity depth profiling using NMNTI's TruPro® technology and CANBERRA’s analytical tools to support its dismantling and disposal. Over four weeks, 100 samples from various materials were collected and analyzed on-site for radionuclide content, ensuring no cross-contamination and maintaining gamma detection limits below 0.1 Bq/g. This method provided efficient, accurate characterization of the reactor components, aiding in safe and cost-effective dismantling while keeping personnel radiation exposure to a minimum.

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Radiological Characterisation of High Dose-Rate Contaminated Soil Boxes by ISOCS Gamma Spectroscopy

At Oak Ridge National Laboratory, approximately 1000 cubic yards of contaminated soil from Tank W-1A were placed in lead-shielded boxes for disposal, requiring radiological characterization to meet Nevada National Security Site (NNSS) criteria. Using ISOCS in situ gamma spectroscopy, with LEGe detectors and dose rate probes, enabled direct quantification of radioactivity, minimizing safety risks and project costs. Over six months, 316 boxes were measured and 309 shipped, successfully characterizing the waste and maintaining low radiation exposure to personnel.

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ISOCS In-Situ Gamma Spectroscopy Analysis, for Measuring 200 litre LLW drums and 1 m3 LLW boxes

When the Waste Monitoring and Compaction Plant's (WAMAC) gamma spectrometry system at Sellafield was out of service, a portable ISOCS system was employed to verify low-level waste (LLW) drums and boxes against consignor declarations. This ensured compliance with operational and regulatory requirements. The project involved developing measurement methodologies, training staff, and performing non-destructive assays, successfully enabling WAMAC to meet waste throughput commitments within tight timelines.

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Method Development for Characterisation of Uranium in UF6 Cylinders

A feasibility study at Sellafield Ltd (Capenhurst) aimed to develop a non-destructive radiometric method to differentiate between virgin and reprocessed UF6 in storage cylinders using High Resolution Gamma ray Spectrometry (HRGS). The project involved testing four 48Y UF6 cylinders with ISOCS™ to identify gamma emissions and quantify uranium isotopes, providing essential data for future UF6 handling. The successful development of this method, validated through test measurements, offers a robust technique for routine high-throughput characterization of UF6 cylinders.

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The Efficiency Characterisation of Germanium Detectors at Energies less than 45 keV -- 10479 DOWNLOAD

The Special Properties of Massimetric Efficiency Calibrations as Compared to the Traditional Efficiency Calibration for D&D and ER Gamma Spectroscopy Measurements – 10021 DOWNLOAD

The Use of Three Dedicated Nuclear Measurement Tools for D&D Operations in Nuclear Facilities DOWNLOAD

State-of-the Art Cryocooler Solutions for HPGe Detectors DOWNLOAD

A Semi-Empirical Formula for Representing the Full Energy Peak Efficiencies of Planar GE Detectors DOWNLOAD

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