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ASTM C1165-12

Historical Revision

Standard Test Method for Determining Plutonium by Controlled-Potential Coulometry in H<inf>2</inf>SO<inf>4</inf> at a Platinum Working Electrode

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1.1 This test method covers the determination of milligram quantities of plutonium in unirradiated uranium-plutonium mixed oxide having a U/Pu ratio range of 0.1 to 10. This test method is also applicable to plutonium metal, plutonium oxide, uranium-plutonium mixed carbide, various plutonium compounds including fluoride and chloride salts, and plutonium solutions.

1.2 The recommended amount of plutonium for each aliquant in the coulometric analysis is 5 to 10 mg. Precision worsens for lower amounts of plutonium, and elapsed time of electrolysis becomes impractical for higher amounts of plutonium.

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

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. Specific precautionary statements are given in Section 8.

This test method is to be used to ascertain whether or not materials meet specifications for plutonium content or plutonium assay, or both.

A chemical calibration of the coulometer is necessary for accurate results.


FIG. 1 Example of a Cell Design Used at Los Alamos National Laboratory (LANL)

SDO ASTM: ASTM International
Document Number C1165
Publication Date June 1, 2012
Language en - English
Page Count 6
Revision Level 12
Supercedes
Committee C26.05
Publish Date Document Id Type View
Jan. 1, 2023 C1165-23 Revision
July 1, 2022 C1165-22 Revision
Nov. 1, 2017 C1165-17 Revision
June 1, 2012 C1165-12 Revision
Aug. 10, 2000 C1165-90R00E01 Revision
June 1, 2005 C1165-90R05 Reaffirmation