[en] Within the framework of the Nordic Nuclear Safety Research (NKS) programme four subprojects were carried out in order to assist the Nodic authorities in improving emergency response. The present report is a summary of all four subprojects; full reports of each subproject are or will be published separately. In the field of mobile measurements an exercise was carried out on Rapid Environmental Surveying using Mobile Equipment (RESUME95) in Finland in August 1995. The main purposes were to test the ability of existing airborne (10 teams), carborne (7 teams) and in situ instruments (from 8 countries) to map contaminated areas (due to the Chernobyl accident) and to establish the comparability of results obtained with different systems. Preliminary analysis showed that major features of the spatial distribution of the contaminants were identified by all teams, but that significant variations in absolute figures were observed. Quantitative analyses were undertaken to assess the comparability of the results, and the need for further development was identified. Quality assurance in sampling and analysis mainly addressed quality assurance in various aspects of gamma-ray spectroscopy with accreditation as a goal. Several details were examined; e.g. the possibility of adopting some joint reference sample geometries in the Nordic countries, the need for improving software for processing gamma-ray spectra, comparability of whole-body measurements and problems in reporting, storing and exchange of electronic data. (SM)