ASTM C1295-24
Standard Test Method for Gamma Energy Emission from Fission and Decay Products in Uranium Hexafluoride and Uranyl Nitrate Solution

Standard No.

ASTM C1295-24

Release Date

2024

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C1295-24

Scope

1.1 This test method covers the measurement of gamma energy emitted from fission products in uranium hexafluoride (UF6) and uranyl nitrate solution. This test method may also be used to measure the concentration of some uranium decay products. It is intended to provide a method for demonstrating compliance with UF6 Specifications C787 and C996, uranyl nitrate Specification C788, and uranium ore concentrate Specification C967.

1.2 The lower limit of detection is estimated at 5000 MeV Bq/kg (MeV kg-1 /s-1 ) of uranium and is the square root of the sum of the squares of the individual reporting limits of the nuclides to be measured. The limit of detection was determined on a pure, aged natural uranium (ANU) solution. The value is dependent upon the detector efficiency and background that can be achieved.

1.3 The fission product nuclides to be measured are 106 Ru/ 106 Rh, 103 Ru, 137 Cs, 144 Ce, 144 Pr, 141 Ce, 95 Zr, 95 Nb, and 125 Sb. Among the uranium decay product nuclides that may be measured is 231 Pa. Other gamma energy-emitting fission and uranium decay nuclides present in the spectrum at detectable levels should be identified and quantified as required by the data quality objectives.

1.4 The values stated in SI units are to be regarded as standard. Additionally, the non-SI units of kiloelectron volts and megaelectron volts are to be regarded as standard. No other units of measurement are included in this standard.

1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 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 C1295-24 Referenced Document

• ASTM C1022 Standard Test Methods for Chemical and Atomic Absorption Analysis of Uranium-Ore Concentrate
• ASTM C761 Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride
• ASTM C787 Standard Specification for Uranium Hexafluoride for Enrichment
• ASTM C788 Standard Specification for Nuclear-Grade Uranyl Nitrate Solution
• ASTM C859 Standard Terminology Relating to Nuclear Materials
• ASTM C967 Standard Specification for Uranium Ore Concentrate
• ASTM C996 Standard Specification for Uranium Hexafluoride Enriched to Less Than 5% 235U1
• ASTM D3649 Standard Test Method for High-Resolution Gamma-Ray Spectrometry of Water
• ASTM E3376 Standard Practice for Calibration and Usage of Germanium Detectors in Radiation Metrology for Reactor Dosimetry

ASTM C1295-24 history

• 2024 ASTM C1295-24 Standard Test Method for Gamma Energy Emission from Fission and Decay Products in Uranium Hexafluoride and Uranyl Nitrate Solution
• 2015 ASTM C1295-15 Standard Test Method for Gamma Energy Emission from Fission and Decay Products in Uranium Hexafluoride and Uranyl Nitrate Solution
• 2014 ASTM C1295-14 Standard Test Method for Gamma Energy Emission from Fission and Decay Products in Uranium Hexafluoride and Uranyl Nitrate Solution
• 2013 ASTM C1295-13 Standard Test Method for Gamma Energy Emission from Fission and Decay Products in Uranium Hexafluoride and Uranyl Nitrate Solution
• 2005 ASTM C1295-05 Standard Test Method for Gamma Energy Emission from Fission Products in Uranium Hexafluoride and Uranyl Nitrate Solution
• 1998 ASTM C1295-98 Standard Test Method for Gamma Energy Emission from Fission Products in Uranium Hexafluoride

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