GB/T 27752-2011Validation of the strength of uranium reference solution, plutonium reference solution and potassium dichromate reference solution (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

This standard uses redrafted Law Amendment uses ISO 10980:1995 "Measurement of concentration of standard solution concentration with confirmation" (in English).

This standard and ISO 10980:1995 technical differences exist compared to the terms of these differences has been involved through its outer margin bits Opposing vertical single line (-) were indicated in Appendix I are given a list of corresponding technical differences and their causes.

This standard and ISO 10980:1995 compared to the main technical differences are as follows.

--- Standard name changed to "uranium, plutonium, and the concentration of potassium dichromate standard solution confirmation";

--- Uranium metal in Appendix A to the standard substance Triuranium reference material, and the corresponding modification of the preparation procedure;

--- Appendix B of plutonium metal reference material to plutonium dioxide plutonium reference materials, and modify the corresponding preparation procedures;

Local --- numerical example of the re-calculated, for example, a standard text (this standard) in 4.3.5,5.4, Appendix E, Appendix F and attached Record G.

The standard proposed by China National Nuclear Corporation.

This standard by the National Standardization Technical Committee on Nuclear Energy (SAC/TC58) centralized.

This standard was drafted. Institute of Nuclear Industry Standardization.

1 Scope

This standard specifies the procedure for preparing the uranium, plutonium, and potassium dichromate standard solution and confirm its concentration program.

This standard applies to confirm the uranium, plutonium and preparation and concentration of potassium dichromate standard solution preparation and concentration of other substances in the standard solution Confirm also refer to use.

2 Normative references

The following documents for the application of this document is essential, dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

ISO 7097-1 nuclear fuel technology solutions, uranium hexafluoride and solids in the first part of the determination of uranium. iron (II) reduction/potassium dichromate Oxidation titration (Nuclearfueltechnology-Determinationofuraniuminsolutions, uraniumhexafluoride andsolids-Part 1. Iron (II) reduction/potassiumdichromateoxidationtitrimetricmethod) Determination of milligram quantities of nitric acid solution of potassium dichromate amperometric titration method after ISO 8298 fuel technology Cerium (IV) oxide (II) reduction Grade plutonium (Nuclearfueltechnology-Determinationofmiligramamountsofplutoniuminnitricacidso-lutions-PotentiometrictitrationwithpotassiumdichromateafteroxidationbyCe (IV) andreduction byFe (II)) Principle 3 Uranium, plutonium and potassium dichromate standard solution independently prepared. There are prepared using certified reference materials or high-purity uranium material, plutonium and standard potassium dichromate solution Solution. accurately weighed these substances completely dissolved, the obtained solution was accurately weighed, calculated according to the known solution composition weighing data and reference material concentration.

With analysis of these solutions can be compared with each other between the inspection accuracy of the prepared solution concentration, so that the computed Relative deviation from the average concentration between repeated measurements is less than a certain limit. The reference material according preparing solutions Level, the standard solution can be in two grades.

--- A standard solution;

--- Secondary standard solution.

4 a standard solution