Analytical calculation of the collimated detector response for the characterization of nuclear waste drums by segmented gamma scanning

2012 ◽  
Vol 292 (3) ◽  
pp. 1325-1328 ◽  
Author(s):  
Nan Qian ◽  
Thomas Krings ◽  
Eric Mauerhofer ◽  
Dezhong Wang ◽  
Yunfei Bai
Keyword(s):  
Nuclear Waste ◽  
Analytical Calculation ◽  
Detector Response ◽  
Waste Drums ◽  
Gamma Scanning

scholarly journals SiLiF Neutron Counters to Monitor Nuclear Materials in the MICADO Project

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2630
Author(s):  
Luigi Cosentino ◽  
Quentin Ducasse ◽  
Martina Giuffrida ◽  
Sergio Lo Meo ◽  
Fabio Longhitano ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Detector Response ◽  
Nuclear Materials ◽  
Spent Fuel ◽  
Neutron Detectors ◽  
Intermediate Level Radioactive Waste ◽  
Eu Project ◽  
Interim Storage ◽  
Waste Drums

In the framework of the MICADO (Measurement and Instrumentation for Cleaning And Decommissioning Operations) European Union (EU) project, aimed at the full digitization of low- and intermediate-level radioactive waste management, a set of 32 solid state thermal neutron detectors named SiLiF has been built and characterized. MICADO encompasses a complete active and passive characterization of the radwaste drums with neutrons and gamma rays, followed by a longer-term monitoring phase. The SiLiF detectors are suitable for the monitoring of nuclear materials and can be used around radioactive waste drums possibly containing small quantities of actinides, as well as around spent fuel casks in interim storage or during transportation. Suitable polyethylene moderators can be exploited to better shape the detector response to the expected neutron spectrum, according to Monte Carlo simulations that were performed. These detectors were extensively tested with an AmBe neutron source, and the results show a quite uniform and reproducible behavior.

Kernel-Integration Scatter Model for the Characterization of Nuclear Waste Drums by Gamma Emission Tomography

2002 ◽  
Vol 41 (Part 1, No. 9) ◽  
pp. 5757-5761
Author(s):  
Predrag M. Marinkovic ◽  
Vladan Lj. Ljubenov
Keyword(s):  
Nuclear Waste ◽  
Emission Tomography ◽  
Gamma Emission ◽  
Kernel Integration ◽  
Waste Drums

High-Energy X-Ray Imaging Applied to Nondestructive Characterization of Large Nuclear Waste Drums

2015 ◽  
Vol 62 (6) ◽  
pp. 3104-3109 ◽  
Author(s):  
Nicolas Estre ◽  
Daniel Eck ◽  
Jean-Luc Pettier ◽  
Emmanuel Payan ◽  
Christophe Roure ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
High Energy ◽  
X Ray ◽  
X Ray Imaging ◽  
Waste Drums ◽  
Nondestructive Characterization

Chemical, Physical and Engineering Characterization Of Candidate Backfill Clays and Clay Admixtures for a Nuclear Waste Respository-Part I

1981 ◽  
Vol 6 ◽  
Author(s):  
Sudesh K. Singh
Keyword(s):  
Nuclear Waste ◽  
Morphological Changes ◽  
Deionized Water ◽  
Engineering Properties ◽  
Nuclear Waste Repository ◽  
Exchange Cation ◽  
Mineral Components ◽  
Waste Repository ◽  
Mineralogical Compositions

ABSTRACTFourteen Canadian clays and clay admixtures were subjected to simulated nuclear waste repository environments. The present work is concerned with the montmorillonite-dominant materials only. The montmorillonite-dominant samples showed significant leaching on interaction with deionized water. On heating the samples at 200°C for 500 hours, montmorillomites lost intermicellar water completely and acquired cusp-like to cylindrical morphologies. The loss of water and the morphological changes in montmorillonites significantly altered the engineering characteristics. Permeability, shrinkage limits, compactability and shear strength varied in response to the dominant exchange cation in the structure of montmorillonites and the presence of other mineral components in the materials. The synthetic granite water reacted with montmorillonites and led to changes in chemical and mineralogical compositions, crystalline state and engineering properties.

The Role of Colloids in Nuclear Waste Disposal

1983 ◽  
Vol 26 ◽  
Author(s):  
A. Avogadro ◽  
G.De Marsily
Keyword(s):  
Ground Water ◽  
Nuclear Waste ◽  
Waste Disposal ◽  
Column Experiments ◽  
Colloidal Transport ◽  
Container Material ◽  
Colloidal Fraction ◽  
Filtration Model

ABSTRACTAspects of formation and characterization of a radioactive colloidal fraction released by the waste form or produced by association with microcolloids naturally existing in ground water or produced either by corrosion of container material or by degradation of backfill material are discussed. A filtration model has been developed in order to describe colloidal transport under field conditions. Comparison between data obtained with laboratory column experiments and theoretical evaluations is presented.

Reconstruction of the isotope activity content of heterogeneous nuclear waste drums

2012 ◽  
Vol 70 (7) ◽  
pp. 1100-1103 ◽  
Author(s):  
Thomas Krings ◽  
Eric Mauerhofer
Keyword(s):  
Nuclear Waste ◽  
Waste Drums

Characterization of a Titanate Based Ceramic for High Level Nuclear Waste Solidification

1979 ◽  
pp. 211-217 ◽  
Author(s):  
J. K. Johnstone ◽  
T. J. Headley ◽  
P. F. Hlava ◽  
F. V. Stohl
Keyword(s):  
Nuclear Waste ◽  
High Level Nuclear Waste ◽  
High Level
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