EC (European Communities) Static High-Temperature Leach Test. Summary Report of an European Community Interlaboratory Round Robin

摘要

The results of an interlaboratory static high-temperature leach test conducted by the Commission of the European Communities in 1983 over a period of 9 months are compiled and statistically evaluated. A total of 12 laboratories - 10 from Member States of the EC and one from Finland and the USA - provided information concerning the test method and the analytical test results in the frame of a round robin test (RRT). All together these laboratories tested 366 waste from specimens of the borosilicate glass UK 209 containing simulated high-level radioactive waste. Leach tests were performed on the basis of the ''Document on the EC static high-temperature leach test method'' in autoclaves at leaching temperatures of 90 sup 0 C, 110 sup 0 C, 150 sup 0 C, and 190 sup 0 C over time periods of 3, 7, 14, 28 and 56 days using dionized water as leachant. The resulting leachates were analysed for the elemental concentrations of Si, B, Sr, Nd and Cs by all laboratories and for the concentrations of the optional elements Na, Al, Ce, Mo, Cr, Fe, Li, Mg and Zn by some of the participating laboratories. Additionally, the F content of the blank leachates was analysed by all laboratories.