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ASTM-C1295:2005 Edition(Redline)

ASTM-C1295:2005 Edition(Redline)

$23.40

C1295-05 Standard Test Method for Gamma Energy Emission from Fission Products in Uranium Hexafluoride and Uranyl Nitrate Solution (Redline)

Published By Publication Date Number of Pages
ASTM 2005 5
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Significance and Use

The gamma-ray emitting fission products in UF 6 are identified and quantified using a high-resolution gamma-ray energy analysis system, which includes a high-resolution germanium detector. This test method shall be used to meet the health and safety specifications of C 787, C 788, and C 996 regarding applicable fission products in reprocessed uranium solutions.

1. Scope

1.1 This test method covers the measurement of gamma energy emitted from fission products in uranium hexafluoride (UF6) and uranyl nitrate solution. It is intended to provide a method for demonstrating compliance with UF6 specifications C 787 and C 996 and uranyl nitrate specification C 788.

1.2 The lower limit of detection is 5000 MeV Bq/kg (MeV/kg per second) 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 detector efficiency and background.

1.3 The 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. Other gamma energy-emitting fission nuclides present in the spectrum at detectable levels should be identified and quantified as required by the data quality objectives.

1.4 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C761 Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride C787 Specification for Uranium Hexafluoride for Enrichment C788 Specification for Nuclear-Grade Uranyl Nitrate Solution or Crystals

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