ASTM C1625-19 PDF

Scope: 1.1 This test method covers the determination of the concentration and isotopic composition of uranium and plutonium in solutions. The purified uranium or plutonium from samples ranging from nuclear materials to environmental or bioassay matrices is loaded onto a mass spectrometric filament. The isotopic ratio is determined by thermal ionization mass spectrometry, the concentration is determined by isotope dilution. 1.2 The values stated in SI units are to be regarded as the standard. Values in parentheses are for information only. 1.3 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 safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM C1625-19 Referenced Document

ASTM C1008 Standard Specification for Sintered (Uranium-Plutonium) Dioxide
Pellets&x2014;Fast Reactor Fuel
ASTM C1068 Standard Guide for Qualification of Measurement Methods by a Laboratory Within the Nuclear Industry
ASTM C1128 Standard Guide for Preparation of Working Reference Materials for Use in the Analysis of Nuclear Fuel Cycle Materials
ASTM C1156 Standard Guide for Establishing Calibration for a Measurement Method Used to Analyze Nuclear Fuel Cycle Materials
ASTM C1168 Standard Practice for Preparation and Dissolution of Plutonium Materials for Analysis
ASTM C1347 Standard Practice for Preparation and Dissolution of Uranium Materials for Analysis*， 2023-01-01 Update
ASTM C1411 Standard Practice for the Ion Exchange Separation of Uranium and Plutonium Prior to Isotopic Analysis
ASTM C1415 Standard Test Method for ²³⁸Pu Isotopic Abundance by Alpha Spectrometry
ASTM C753 Standard Specification for Nuclear-Grade, Sinterable Uranium Dioxide Powder
ASTM C757 Standard Specification for Nuclear-Grade Plutonium Dioxide Powder, Sinterable
ASTM C776 Standard Specification for Sintered Uranium Dioxide Pellets for Light Water Reactors*， 2022-07-01 Update
ASTM C833 Standard Specification for Sintered (Uranium-Plutonium) Dioxide Pellets
ASTM C859 Standard Terminology Relating to Nuclear Materials
ASTM D3084 Standard Practice for Alpha-Particle Spectrometry of Water

2019 ASTM C1625-19 Standard Test Method for Uranium and Plutonium Concentrations and Isotopic Abundances by Thermal Ionization Mass Spectrometry
2012 ASTM C1625-12 Standard Test Method for Uranium and Plutonium Concentrations and Isotopic Abundances by Thermal Ionization Mass Spectrometry
2005 ASTM C1625-05 Standard Test Method for Uranium and Plutonium Concentrations and Isotopic Abundances by Thermal Ionization Mass Spectrometry