Intercomparison exercise on difficult to measure radionuclides in activated steel: statistical analysis of radioanalytical results and activation calculations
Anumaija Leskinen,Susanna Salminen-Paatero,Celine Gautier,Antti Räty,Merja Tanhua-Tyrkkö,Pascal Fichet,Tommi Kekki,Wenzhong Zhang,Jacques Bubendorff,Elodie Laporte,Gabriel Lambrot,René Brennetot +11 more
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In this paper, the results obtained during an intercomparison exercise for the determination of difficult to measure radionuclides in activated reactor pressure vessel (RPV) steel samples were reported.Abstract:
This paper reports the results obtained during an intercomparison exercise for the determination of difficult to measure radionuclides in activated reactor pressure vessel (RPV) steel samples. In total, eight laboratories participated analysing 14C, 55Fe and 63Ni activity concentrations in RPV steel. In addition, some laboratories also analysed 60Co activity concentrations. Corresponding activity concentrations were also determined using activation calculations. Robust statistical techniques were utilised for the analysis of the results according to ISO 13528 standard. The results showed good agreement for 55Fe and 63Ni results whereas 14C results had significant differences. 60Co results were in quite good agreement.read more
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Towards the application of electrokinetic remediation for nuclear site decommissioning.
TL;DR: In this paper, electrokinetic remediation (EKR) is applied to remove contaminants from the treated media, which retains high removal efficiencies in low permeability substrates such as concretes or clays.
Journal ArticleDOI
Intercomparison exercise on difficult to measure radionuclides in activated concrete - statistical analysis and comparison with activation calculations
Anumaija Leskinen,Celine Gautier,Antti Räty,Tommi Kekki,Elodie Laporte,Margaux Giuliani,Jacques Bubendorff,Julia Pauliina Laurila,Julia Pauliina Laurila,Kristian Otto Aleksi Kurhela,Kristian Otto Aleksi Kurhela,Pascal Fichet,Susanna Salminen-Paatero +12 more
TL;DR: In this article, 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 are reported.
Journal ArticleDOI
Development of 3H, 14C, 41Ca, 55Fe, 63Ni radiochemical analysis methods in activated concrete samples
Journal ArticleDOI
Accurate measurement of 55 Fe in radioactive waste
Celine Gautier,Elodie Laporte,Gabriel Lambrot,Margaux Giuliani,Christèle Colin,Jacques Bubendorff,Marielle Crozet,Caroline Mougel +7 more
TL;DR: In this article, a radiochemical method was developed for the accurate 55Fe determination in various radioactive waste, in particular samples contaminated with 241Pu, which consisted of three purification steps based on first ammonium hydroxide precipitation, and then anion exchange separation followed by TRU®-based extraction chromatography.
DTM-Decom II - Intercomparison exercise in analysis of DTM in decommissioning waste
Anumaija Leskinen,Merja Tanhua-Tyrkkö,Susanna Salminen-Paatero,Julia Laurila,Kristian Kurhela,Xiaolin Hou,Filippa Bruzell,Tommy Suutari,Satu Kangas,Satu Rautio,Cato C. Szacinski Wendel,Marie Bourgeaux-Goget,solveig Stordal,Joe Moussa,Ingunn Isdahl,Celine Gautier,Elodie Laporte,Margaux Giuliani,Jacques Bubendorff,Pascal Fichet +19 more
Abstract: An intercomparison exercise was carried out for difficult to measure radionuclides in activated reactor pressure vessel steel samples. The results were analysed accorging to ISO 13528 standard. The performance assessment was carried out using z score. Report includes an overview of the radioanalytical procedures, preliminary and final results, and preformance assessments.
References
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Journal ArticleDOI
Representative Sampling for reliable data analysis: Theory Of Sampling
TL;DR: A summarizing set of only seven Sampling Unit Operations (SUOs) that fully cover all practical aspects of sampling and provides a handy “toolbox” for samplers, engineers, laboratory and scientific personnel are presented.
Journal ArticleDOI
Isotopic depletion and decay methods and analysis capabilities in scale
TL;DR: The calculation of fuel isotopic compositions is essential to support design, safety analysis, and licensing of many components of the nuclear fuel cycle, from reactor physics and severe accident an... as discussed by the authors.
Journal ArticleDOI
Rapid analysis of 14C and 3H in graphite and concrete for decommissioning of nuclear reactor
TL;DR: A rapid oxidizing combustion method using a commercial Sample Oxidizer has been investigated to determine separately the 14C and 3H activities in graphite and concrete and shows good agreement for graphite samples.
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Determination of 63Ni and 55Fe in nuclear waste samples using radiochemical separation and liquid scintillation counting
TL;DR: In this paper, an analytical method for the determination of 63 Ni and 55 Fe in nuclear waste samples such as graphite, heavy concrete, aluminium and lead was developed, where different decomposition methods (i.e. ashing, acid digestion and alkali fusion) were investigated for the decomposition of the samples and for the separation of Fe and Ni from the matrix.
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Determination of 36Cl in nuclear waste from reactor decommissioning.
TL;DR: The method has been used to determine 36Cl in heavy concrete, aluminum, and graphite from the Danish DR-2 research reactor and the detection limit of this analytical method for 36Cl is 14 mBq.