ASTM C1854

ASTM C1854 is the ASTM standard for determining hydrogen, total from all sources, in mixed oxide ((U, Pu)O2) sintered pellets using inert gas fusion followed by thermal conductivity measurement. It provides a focused test method for evaluating hydrogen content in a nuclear fuel form where accurate compositional control is important. By defining a repeatable analytical approach, the standard helps support consistent testing, product evaluation, and quality control for mixed oxide pellets.

What is ASTM C1854?

ASTM C1854 describes a test method for measuring total hydrogen in mixed oxide ((U, Pu)O2) sintered pellets. The title indicates two key steps: inert gas fusion to release the hydrogen from the specimen, followed by thermal conductivity measurement for detection and quantification. This makes the document a technical reference for laboratory analysis of pellet material, with a clear emphasis on chemical determination rather than general performance testing. It is typically used where precise analytical results are needed for material assessment.

Where is ASTM C1854 used?

This standard is commonly used in laboratory and production environments that handle mixed oxide sintered pellets for nuclear fuel-related applications. It is relevant wherever hydrogen content in ((U, Pu)O2) pellets must be measured as part of material characterization, acceptance testing, or process monitoring. ASTM C1854 supports workflows that rely on controlled sample preparation, inert gas fusion equipment, and thermal conductivity measurement systems used for elemental analysis.

Why is ASTM C1854 important?

ASTM C1854 helps provide a consistent, recognized method for measuring hydrogen in a sensitive nuclear material. That matters for compliance, procurement, and quality control because analytical results need to be repeatable and suitable for comparison across laboratories and production lots. By standardizing the test approach, the document can reduce ambiguity in reporting and support more reliable material evaluation. ASTM C1854 is especially useful when hydrogen content must be tracked with care during specification or acceptance decisions.

• Hydrogen determination in mixed oxide pellets
• Inert gas fusion test method
• Thermal conductivity measurement step
• Laboratory quality control support
• Material evaluation for ((U, Pu)O2) sintered pellets