Standard Test Method for Determining Plutonium by Controlled-Potential Coulometry in H2SO4 at a Platinum Working Electrode

Importancia y uso:

5.1 This test method is used to ascertain whether or not materials meet specifications for plutonium concentration or plutonium mass fraction.

5.1.1 The materials (nuclear grade plutonium nitrate solutions, plutonium metal, plutonium oxide powder, and mixed oxide and carbide powders and pellets) to which this test method applies are subject to nuclear safeguards regulations governing their possession and use. However, adherence to this test method does not automatically guarantee regulatory acceptance of the resulting safeguards measurements. It remains the sole responsibility of the user of this test method to ensure that its application to safeguards has the approval of the proper regulatory authorities.

5.1.2 When used in conjunction with appropriate certified reference materials (CRMs), this test method can demonstrate traceability to the international measurements system (SI).

5.2 Fitness for Purpose of Safeguards and Nuclear Safety Application—Methods intended for use in safeguards and nuclear safety applications shall meet the requirements specified by Guide C1068 for use in such applications.

5.3 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)

Subcomité:

C26.05

Referida por:

C0759-18, C0758-18, C1128-23, C0698-16, C0697-16

Volúmen:

12.01

Número ICS:

27.120.30 (Fissile materials and nuclear fuel technology)

Palabras clave:

controlled-potential coulometry; plutonium analysis; plutonium at platinum electrode; plutonium in sulfuric acid; plutonium-uranium mixtures ;