Spent Nuclear Fuel passive gamma analysis and reproducibility : Application to SKB-50 assemblies
(2023) In Annals of Nuclear Energy 192.- Abstract
This work studies the reproducibility of passive gamma spectroscopy measurements for spent nuclear fuels (SNFs). The fifty assemblies used for this study span over a variety of initial enrichments, burnups, and cooling times. These SNFs have been measured in two different gamma axial measurement campaigns. The net peak counts are determined for Cs-137, Eu-154 and Cs-134. Furthermore, a sensitivity analysis of the relative position of the SNF and the detector is performed. Most importantly, this work describes a methodology using an intrinsic self-calibration procedure that can be used to compare the relative activities of the radionuclides without the need for detailed knowledge about the measurement set-up and its properties. The... (More)
This work studies the reproducibility of passive gamma spectroscopy measurements for spent nuclear fuels (SNFs). The fifty assemblies used for this study span over a variety of initial enrichments, burnups, and cooling times. These SNFs have been measured in two different gamma axial measurement campaigns. The net peak counts are determined for Cs-137, Eu-154 and Cs-134. Furthermore, a sensitivity analysis of the relative position of the SNF and the detector is performed. Most importantly, this work describes a methodology using an intrinsic self-calibration procedure that can be used to compare the relative activities of the radionuclides without the need for detailed knowledge about the measurement set-up and its properties. The reproducibility of the Cs-137 net peak count rate ranges between 2% and 4%. Systematic reproducibility of the ratio of Eu-154 and Cs-134 to Cs-137 is between 0,4% - 5 % using the intrinsic self-calibration method.
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- author
- Solans, Virginie ; Sjöstrand, Henrik ; Jansson, Peter ; Schillebeeckx, Peter ; Grape, Sophie ; Branger, Erik and Sjöland, Anders LU
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Gamma measurements, Reproducibility, SKB-50, SNF
- in
- Annals of Nuclear Energy
- volume
- 192
- article number
- 109941
- publisher
- Elsevier
- external identifiers
-
- scopus:85161998442
- ISSN
- 0306-4549
- DOI
- 10.1016/j.anucene.2023.109941
- language
- English
- LU publication?
- yes
- id
- 3fd5bb93-aba0-40dc-a6f5-1caa74dd9561
- date added to LUP
- 2023-08-29 14:30:54
- date last changed
- 2023-08-29 14:30:54
@article{3fd5bb93-aba0-40dc-a6f5-1caa74dd9561, abstract = {{<p>This work studies the reproducibility of passive gamma spectroscopy measurements for spent nuclear fuels (SNFs). The fifty assemblies used for this study span over a variety of initial enrichments, burnups, and cooling times. These SNFs have been measured in two different gamma axial measurement campaigns. The net peak counts are determined for Cs-137, Eu-154 and Cs-134. Furthermore, a sensitivity analysis of the relative position of the SNF and the detector is performed. Most importantly, this work describes a methodology using an intrinsic self-calibration procedure that can be used to compare the relative activities of the radionuclides without the need for detailed knowledge about the measurement set-up and its properties. The reproducibility of the Cs-137 net peak count rate ranges between 2% and 4%. Systematic reproducibility of the ratio of Eu-154 and Cs-134 to Cs-137 is between 0,4% - 5 % using the intrinsic self-calibration method.</p>}}, author = {{Solans, Virginie and Sjöstrand, Henrik and Jansson, Peter and Schillebeeckx, Peter and Grape, Sophie and Branger, Erik and Sjöland, Anders}}, issn = {{0306-4549}}, keywords = {{Gamma measurements; Reproducibility; SKB-50; SNF}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Annals of Nuclear Energy}}, title = {{Spent Nuclear Fuel passive gamma analysis and reproducibility : Application to SKB-50 assemblies}}, url = {{http://dx.doi.org/10.1016/j.anucene.2023.109941}}, doi = {{10.1016/j.anucene.2023.109941}}, volume = {{192}}, year = {{2023}}, }