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ASTM C 1855 : 2018

Current

Current

The latest, up-to-date edition.

Standard Test Method for Determination of Uranium and Plutonium Concentration in Aqueous Solutions Using Hybrid K-Edge Densitometry and X-Ray Fluorescence

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-06-2018

€61.92
Excluding VAT

Committee
C 26
DocumentType
Test Method
Pages
16
PublisherName
American Society for Testing and Materials
Status
Current

1.1This test method specifies the determination of the volumetric uranium and plutonium concentrations, typically, in nitric acid solutions through the combination of K-Edge absorption Densitometry (KED) and K X-Ray fluorescence (XRF) using an X-Ray generator. It is known as the “Hybrid K-Edge” (HKED) technique whose original implementation is described in Ref (1).2 The method is applicable to dissolver (input) solutions and product solutions. The test method also specifies the determination of low concentrations (<50 g/L) of U and Pu using XRF measurements alone (the “stand-alone XRF” mode). Using the XRF measurement in the stand-alone mode, solutions in the 0.2 g/L to 50 g/L range of Pu with or without U and solutions in the 0.2 g/L to 50 g/L range of U with or without Pu are commonly measured.

1.2This test method is applicable to the following common-use conditions:

1.2.1Spent nuclear fuel reprocessing and fuel production.

1.2.2Homogeneous aqueous solutions contained in cylindrical vials or cuvettes. HKED systems may use two separate sample containers, namely a rectangular cuvette for KED and a cylindrical vial for XRF. Alternatively, there are HKED systems that use a sample contained in a single cylindrical vial, for both K-Edge and XRF.

1.2.3The results produced by the two sample configuration (a rectangular cuvette for K-Edge densitometry and a cylindrical vial for XRF) are compliant with the International Target Values (ITV) (1).

1.2.4The precision results produced by the single cylindrical vial configuration are degraded in comparison to the two container system.

1.2.5This test method is applicable to facilities that do not adopt the ITVs, but have their own Data Quality Objectives (DQO).

1.2.6Solutions which contain uranium and plutonium with uranium concentration of 150 to 250 g/L and a U:Pu ratio of 100:1 typically, in the presence of fission products with β, γ, activity of up to 10 TBq/L.

1.2.6.1This test method is not applicable to samples where a minor element such as U needs to be quantified in which Pu is the major element.

1.2.6.2This test method is applicable for common use process control applications for quantifying Pu in the 5 g/L to 30 g/L range using XRF only in the presence of up to ~10 % (~100 000 ppm) of transuranic impurities (predominantly U and Am). In this application, the impurity concentration in the Pu samples is not quantified. Additional uncertainties must be estimated and factored in the Pu concentration results.

1.2.7Solutions containing 50 g/L to 400 g/L of uranium alone.

1.2.8Solutions containing 50 g/L to 400 g/L of plutonium alone.

1.2.9Solutions with low concentrations of U and Pu, typically in the 0.2 g/L to 50 g/L range.

1.2.10The concentration ranges given in 1.2.6 – 1.2.9 are application of the HKED technique for Materials Control and Accountancy (MC&A) purposes. For process control applications where precision requirements are less stringent, KED method can be used to assay samples with lower concentrations of U or Pu (down to 30 g/L).

1.3Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4This 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.

1.5This 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 C 1168 : 2023 Standard Practice for Preparation and Dissolution of Plutonium Materials for Analysis
ASTM C 1592/C1592M : 2021 Standard Guide for Making Quality Nondestructive Assay Measurements
ASTM C 859 : 2023 Standard Terminology Relating to Nuclear Materials
ASTM C 1210 : 2018 Standard Guide for Establishing a Measurement System Quality Control Program for Analytical Chemistry Laboratories Within the Nuclear Industry
ASTM C 859 : 2014 : REV B Standard Terminology Relating to Nuclear Materials
ASTM C 859 : 2024 Standard Terminology Relating to Nuclear Materials
ASTM C 1128 : 2018 Standard Guide for Preparation of Working Reference Materials for Use in Analysis of Nuclear Fuel Cycle Materials
ASTM C 1210 : 1996 : EDT 1 Standard Guide for Establishing a Measurement System Quality Control Program for Analytical Chemistry Laboratories Within the Nuclear Industry (Withdrawn 2005)
ASTM C 1210 : 2021 Standard Guide for Establishing a Measurement System Quality Control Program for Analytical Chemistry Laboratories Within Nuclear Industry
ASTM C 1490 : 2001 Standard Guide for the Selection, Training and Qualification of Nondestructive Assay (NDA) Personnel
ASTM C 1128 : 1995 : EDT 1 Standard Guide for Preparation of Working Reference Materials for Use in the Analysis of Nuclear Fuel Cycle Materials
ASTM C 1068 : 1996 : EDT 1 Standard Guide for Qualification of Measurement Methods by a Laboratory Within the Nuclear Industry
ASTM C 1210 : 2012 Standard Guide for Establishing a Measurement System Quality Control Program for Analytical Chemistry Laboratories Within the Nuclear Industry
ASTM C 1168 : 2015 Standard Practice for Preparation and Dissolution of Plutonium Materials for Analysis
ASTM C 1128 : 2015 Standard Guide for Preparation of Working Reference Materials for Use in Analysis of Nuclear Fuel Cycle Materials
ASTM C 1068 : 2003 : R2011 Standard Guide for Qualification of Measurement Methods by a Laboratory Within the Nuclear Industry
ASTM C 1210 : 2006 Standard Guide for Establishing a Measurement System Quality Control Program for Analytical Chemistry Laboratories Within the Nuclear Industry
ASTM C 1068 : 2015 Standard Guide for Qualification of Measurement Methods by a Laboratory Within the Nuclear Industry
ASTM C 1068 : 2021 Standard Guide for Qualification of Measurement Methods by a Laboratory Within the Nuclear Industry
ASTM C 1297 : 2003 : R2011 Standard Guide for Qualification of Laboratory Analysts for the Analysis of Nuclear Fuel Cycle Materials
ASTM C 1297 : 2003 Standard Guide for Qualification of Laboratory Analysts for the Analysis of Nuclear Fuel Cycle Materials
ASTM C 859 : 2022 Standard Terminology Relating to Nuclear Materials
ASTM C 859 : 2022 : REV A Standard Terminology Relating to Nuclear Materials
ASTM C 1297 : 1995 : EDT 1 Standard Guide for Qualification of Laboratory Analysts for the Analysis of Nuclear Fuel Cycle Materials
ASTM C 1490 : 2004 Standard Guide for the Selection, Training and Qualification of Nondestructive Assay (NDA) Personnel
ASTM C 1128 : 2023 Standard Guide for Preparation of Working Reference Materials for Use in Analysis of Nuclear Fuel Cycle Materials
ASTM C 1128 : 2001 Standard Guide for Preparation of Working Reference Materials for Use in the Analysis of Nuclear Fuel Cycle Materials
ASTM C 1068 : 2003 Standard Guide for Qualification of Measurement Methods by a Laboratory Within the Nuclear Industry
ASTM C 1673 : 2007 : EDT 1 Standard Terminology of C26.10 Nondestructive Assay Methods
ASTM C 1673 : 2010 : REV A : R2018 Standard Terminology of C26.10 Nondestructive Assay Methods
ASTM C 1673 : 2010 : REV A Standard Terminology of C26.10 Nondestructive Assay Methods
ASTM C 1168 : 2001 Standard Practice for Preparation and Dissolution of Plutonium Materials for Analysis
ASTM C 1673 : 2007 Standard Terminology of C26.10 Nondestructive Assay Methods
ASTM C 1168 : 1990 : R1995 : EDT 1 Standard Practice for Preparation and Dissolution of Plutonium Materials for Analysis
ASTM C 1673 : 2010 : REV A : EDT 1 Standard Terminology of C26.10 Nondestructive Assay Methods
ASTM C 1490 : 2014 : R2023 Standard Guide for the Selection, Training and Qualification of Nondestructive Assay (NDA) Personnel
ASTM C 1128 : 2001 : R2008 Standard Guide for Preparation of Working Reference Materials for Use in Analysis of Nuclear Fuel Cycle Materials
ASTM C 1490 : 2014 Standard Guide for the Selection, Training and Qualification of Nondestructive Assay (NDA) Personnel
ASTM C 1297 : 2018 Standard Guide for Qualification of Laboratory Analysts for the Analysis of Nuclear Fuel Cycle Materials
ASTM C 1592/C1592M : 2009 Standard Guide for Making Quality Nondestructive Assay Measurements (Withdrawn 2018)
ASTM C 1490 : 2004 : R2010 Standard Guide for the Selection, Training and Qualification of Nondestructive Assay (NDA) Personnel
ASTM C 1673 : 2010 Standard Terminology of C26.10 Nondestructive Assay Methods
ASTM C 1168 : 2008 Standard Practice for Preparation and Dissolution of Plutonium Materials for Analysis

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