ASTM C1408-16 PDF

Scope: 5.1 Uranium dioxide is used as a nuclear-reactor fuel. Gadolinium oxide is used as an additive to uranium dioxide. In order to be suitable for this purpose, these materials must meet certain criteria for impurity content. This test method is designed to determine whether the carbon content meets Specifications C753, C776, C888, and C922.

1.1 This test method covers the determination of carbon in nuclear-grade uranium oxide powders and pellets to determine compliance with specifications.

1.2 Gadolinium oxide (Gd₂O₃) and gadolinium oxide-uranium oxide powders and pellets may also be analyzed using this test method.

1.3 This test method covers the determination of 5 to 500 μg of residual carbon.

1.4 This test method describes an induction furnace carrier gas combustion system equipped with an infrared detector. It may also be applied to a similar instrument equipped with a thermal conductivity detector.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5.1 The preferred system of units is micrograms carbon per gram of sample (μg/g sample) or micrograms carbon per gram of uranium (μg/g U).

1.6 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.

ASTM C1408-16 Referenced Document

ASTM C753 Standard Specification for Nuclear-Grade, Sinterable Uranium Dioxide Powder
ASTM C776 Standard Specification for Sintered Uranium Dioxide Pellets for Light Water Reactors
ASTM C859 Standard Terminology Relating to Nuclear Materials
ASTM C888 Standard Specification for Nuclear-Grade Gadolinium Oxide (Gd₂O₃) Powder
ASTM C922 Standard Specification for Sintered Gadolinium Oxide-Uranium Dioxide Pellets for Light Water Reactors*， 2024-04-20 Update

2016 ASTM C1408-16 Standard Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method
2009 ASTM C1408-09 Standard Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method
1998 ASTM C1408-98(2004) Standard Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method
1998 ASTM C1408-98 Standard Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method