Abstract

The operations carried out by the Laboratory of Radiation Research are embedded in a quality system. An important part of the laboratory efforts form the determination of radioactivity levels in environmental samples to establish the quality of the environment (under normal and emergency conditions), to carry out monitoring and inspection tasks and for the purpose of process studies. Analytical methods routinely carried out are described in the Standard Operating Procedures. (SOPs). One of the aspects involved quality assurance of radioactivity measurements by regular participation in (inter)national intercomparison exercises. This report reflects the results of intercomparison runs to which LSO participated. Both standard LSO methods and methods for which no standard operating procedure have been developed were used for the determinations.