ASTM C1817-16 PDF

Scope: 5.1 MOX is used as a nuclear-reactor fuel. This test method is designed to determine whether the O/M ratio meets the requirements of the fuel specification. Examples for establishing a fuel specification are given in Specification C833.

5.2 This method is suitable for all sintered MOX pellets containing up to 12 weight % PuO₂ when the UO₂ and PuO₂ meet the requirements of Specifications C753 and C757.

1.1 This practice is an alternative method to Test Method C698 for the determination of the oxygen-to-metal atom ratio (O/M) in sintered mixed oxide fuel (MOX) pellets. The method presented in Test Method C698 is a one-step thermogravimetric method for determining O/M ratio in sintered MOX powders and pellets. As stated in Test Method C698, thermogravimetric methods using a two-step heating cycle are also satisfactory (1, 2).2 The method presented in this test method is a two-step heating cycle method. This test method is applicable to sintered MOX pellets containing up to 10 weight percent PuO₂.

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

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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM C1817-16 Referenced Document

ASTM C1068 Standard Guide for Qualification of Measurement Methods by a Laboratory Within the Nuclear Industry
ASTM C1672 Standard Test Method for Determination of the Uranium, Plutonium or Americium Isotopic Composition or Concentration by the Total Evaporation Method Using a Thermal Ionization Mass Spectrometer
ASTM C698 Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O₂)
ASTM C753 Standard Specification for Nuclear-Grade, Sinterable Uranium Dioxide Powder
ASTM C757 Standard Specification for Nuclear-Grade Plutonium Dioxide Powder, Sinterable
ASTM C833 Standard Specification for Sintered (Uranium-Plutonium) Dioxide Pellets
ASTM C859 Standard Terminology Relating to Nuclear Materials
ASTM D1193 Standard Specification for Reagent Water
ASTM D1356 Standard Terminology Relating to Sampling and Analysis of Atmospheres*， 2024-04-20 Update
ISO 21484 Nuclear Energy - Fuel technology - Determination of the O/M ratio in MOX pellets by the gravimetric method

2016 ASTM C1817-16 Standard Test Method for The Determination of the Oxygen to Metal (O/M) Ratio in Sintered Mixed Oxide ((U, Pu)O2) Pellets by Gravimetry
2015 ASTM C1817-15 Standard Test Method for The Determination of the Oxygen to Metal (O/M) Ratio in Sintered Mixed Oxide ((U, Pu)O2) Pellets by Gravimetry