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Normas ASTM – AENOR
ASTM C968-99

ASTM C968-99

Standard Test Methods for Analysis of Sintered Gadolinium Oxide-Uranium Dioxide Pellets

Fecha:
2017-08-16 /Historical
Superseeded by:
Scope:

1.1 These test methods cover procedures for the analysis of sintered gadolinium oxide-uranium dioxide pellets to determine compliance with specifications.

1.2 The analytical procedures appear in the following order:

Sections Carbon (Total) by Direct Combustion-Thermal Conductivity Method 6 to 15 Chlorine and Fluorine by Pyrohydrolysis Ion-Selective Electrode Method 16 to 22 Gadolinis Content by Energy-Dispersive X-Ray Spectrometry 23 to 32 Hydrogen by Inert Gas Fusion 33 to 40 Isotopic Uranium Composition by Multiple-Filament Surface- Ionization Mass Spectrometric Method 41 to 49 Nitrogen by Distillation-Nessler Reagent (Photometric) Method 50 to 60 Oxygen-to-Metal Ratio of Sinterod Gadolinium Oxide-Uranium Dioxide Pellets 61 to 70 Spectrochemical Determination of Trace Impurity Elements 71 to 77 Total Gas by Hot Vacuum Extraction 78 to 85 Ceramographic Determination of Free Gd2O3 and Free UO2 to Estimate the Homogeneity of (U,Gd)O2 Pellets 86 to 93

1.3 The values stated in SI units are to be regarded as the standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords:
Atomic ratio oxygen-to-metal ratio, of sintered gadolinium oxide-uranium dioxide pellets, method, Carbon content-nuclear materials Oxygen-to-metal ratio Trace elements content-spectrochemical analysis sintered gadolinium oxide-uranium dioxide pellets, method, Ceramographic determination free gadolinium oxide/uranium dioxide, to estimate homogeneity of gadolinium oxide-uranium dioxide pellets, method, Chlorine content sintered gadolinium oxide-uranium dioxide pellets, by pyrohydrolysis ion-selective electrode method, method, Direct combustion-thermal conductivity method Thermal conductivity carbon (total) content of sintered gadolinium oxide-uranium dioxide pellets, method, Gadolinia content sintered gadolinium oxide-uranium dioxide pellets, by energy-dispersive x-ray spectrometry, method, Gadolinium oxide-uranium dioxide pellets analysis of sintered gadolinium oxide-uranium oxide pellets, method, Gases-radioactive Hot-vacuum extraction Vacuum testing total gas content of sintered gadolinium oxide-uranium dioxide pellets, by hot vacuum extraction, method, Homogeneity gadolinium oxide-uranium dioxide pellets, method, Hydrogen content-nuclear materials sintered gadolinium oxide-uranium dioxide pellets, by inert gas fusion method, method, Inert gas fusion hydrogen content of sintered gadolinium oxide-uranium dioxide pellets, method, Ion selective electrode method Pyrohydrolysis ion-selective electrode method chlorine/fluorine content of sintered gadolinium oxide-uranium dioxide pellets, method, Nessler reagent method nitrogen content of sintered gadolinium oxide-uranium dioxide pellets, method, Nitrogen content-nuclear materials sintered gadolinium oxide-uranium dioxide pellets, by distillation-Nessler reagent method, method, Spectrographic analysis trace elements content of sintered gadolinium oxide-uranium dioxide pellets, method, Spectrometry-mass Uranium Uranium content isotopic uranium composition in sintered gadolinium oxide-uranium dioxide pellets, by multiple filament surface-ionization mass spectrometric method, method, Spectrometry-x-ray fluorescence (XRF) X-ray fluorescence (XRF) gadolinia content of sintered gadolinium oxide-uranium dioxide pellets, method, Spectroscopy-emission thorium content of sintered gadolinium oxide-uranium dioxide pellets, method, Thorium content sintered gadolinium oxide-uranium dioxide pellets, by emission spectroscopy, method, Uranium isotopic analysis sintered gadolinium oxide-uranium dioxide pellets, by multiple-filamant surface-ionization mass spectrometric method, method, Volatile matter content-nuclear materials sintered gadolinuim oxide-uranium dioxide pellets, by hot vacuum extraction, method
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