Final report on COOMET.RI(II)-K2.Eu-152: Measurement of activity concentration of radionuclide Eu-152 in a solution (COOMET project no 423/RU/08)

Abstract

The COOMET.RI(II)-K2.Eu-152 comparison of measurements of a standardized solution of Eu-152 has enabled the demonstration of the traceability to the SI of the national measurement standards of three national metrology institutes of the COOMET countries. The comparison results will be used to evaluate the degrees of equivalence for these institutes through the measurements of the linking laboratory in the BIPM.RI(II)-K1.Eu-152 key comparison.

BIPM comparison BIPM.RI(II)-K1.Eu-152 of activity measurements of the radionuclide 152Eu for the VNIIM (Russia), the LNE–LNHB (France) and the CNEA (Argentina), with linked results for the COOMET.RI(II)-K2.Eu-152 comparison

“…An international comparison for this radionuclide, COOMET.RI(II)-K2.Eu-152 was held in 2009 [4] and the three laboratories from this comparison to be added to the matrix of degrees of equivalence are given in Table 1b.…”

“…The uncertainty budgets for the three new submissions are given in Appendix 1, previous uncertainty budgets are given in the earlier K1 report [3]. The uncertainty budgets for all the participants in the COOMET.RI(II)-K2.Eu-152 comparison were published in the final report [4]. The acronyms used for the measurement methods are given in Appendix 2.…”

“…In addition, an international comparison was held in 2009 for this radionuclide, COOMET.RI(II)-K2.Eu-152 [4]. Four laboratories took part in this comparison including the VNIIM who participated in the SIR at the same time, enabling to link the COOMET.RI(II)-K2 comparison to the BIPM.RI(II)-K1 comparison.…”