Improved Performance of Neutron Activation Analysis Laboratories by Feedback workshops following Interlaboratory Comparison Rounds

The IAEA implemented an innovative project from 2010-2015 for assisting neutron activation analysis laboratories in improving the validity of their results by feedback workshops for discussion of results from participation in interlaboratory comparisons rounds. The participants learned during these meetings to identify the most probable sources of errors in their analysis procedures and how to implement corrective actions to prevent reoccurrence. The evaluation of the results clearly shows an improvement in the fraction of results considered as 'metrologically excellent' under the conditions applied. Moreover, there is a clear indication that improvements are consolidated in most laboratories but also stimulate laboratories to develop to a higher level of excellence. (author)