ASTM C 1769 : 2015
Current
The latest, up-to-date edition.
Standard Practice for Analysis of Spent Nuclear Fuel to Determine Selected Isotopes and Estimate Fuel Burnup (Withdrawn 2023)
Hardcopy , PDF
English
22-07-2015
CONTAINED IN VOL. 12.01, 2015 Specifies the quantity and atomic ratios of uranium and plutonium isotopes, neodymium isotopes, and selected gamma-emitting nuclides ([137]Cs, [134]Cs, [154]Eu, [106]Ru, and [241]Am).
Committee |
C 26
|
DocumentType |
Standard Practice
|
Pages |
7
|
PublisherName |
American Society for Testing and Materials
|
Status |
Current
|
1.1A sample of spent nuclear fuel is analyzed to determine the quantity and atomic ratios of uranium and plutonium isotopes, neodymium isotopes, and selected gamma-emitting nuclides (137Cs, 134Cs, 154Eu, 106Ru, and 241Am). Fuel burnup is calculated from the 148Nd-to-fuel ratio as described in this method, which uses an effective 148Nd fission yield calculated from the fission yields of 148Nd for each of the fissioning isotopes weighted according to their contribution to fission as obtained from this method. The burnup value determined in this way requires that values be assumed for certain reactor-dependent properties called for in the calculations (1, 2).2
1.2Error associated with the calculated burnup values is discussed in the context of contributions from random and potential systematic error sources associated with the measurements and from uncertainty in the assumed reactor-dependent variables. Uncertainties from the needed assumptions are shown to be larger than uncertainties from the isotopic measurements, with the largest effect arising from the value of the fast fission factor. Using this factor will provide the most consistent burnup value between calculated changes in heavy element isotopic composition.
1.3This standard practice contains explanatory notes that are not part of the mandatory portion of the standard.
1.4The values stated in SI units are to be regarded as the standard. Mathematical equivalents are given in parentheses.
1.5This 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.
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ASTM D 1193 : 1977 : R1983 : EDT 1 | Standard Specification for Reagent Water |
ASTM C 1625 : 2012 : REDLINE | Standard Test Method for Uranium and Plutonium Concentrations and Isotopic Abundances by Thermal Ionization Mass Spectrometry |
ASTM D 1193 : 2006 : R2011 | Standard Specification for Reagent Water |
ASTM C 1625 : 2019 | Standard Test Method for Uranium and Plutonium Concentrations and Isotopic Abundances by Thermal Ionization Mass Spectrometry |
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ASTM C 1625 : 2005 | Standard Test Method for Uranium and Plutonium Concentrations and Isotopic Abundances by Thermal Ionization Mass Spectrometry |
ASTM D 1193 : 1991 | Standard Specification for Reagent Water |
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ASTM D 1193 : 2006 | Standard Specification for Reagent Water |
ASTM D 1193 : 1999 | Standard Specification for Reagent Water |
ASTM D 1193 : 2006 : R2018 | Standard Specification for Reagent Water |
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