Contribution to the optimization of a network for monitoring and surveillance of environmental radioactivity in Spain

The work presented involves initial action consisting of sounding out the situation of environmental radiological surveillance systems in the countries of the E.E.C. and the corresponding emergency systems with their different features: institutional, technical and managerial. As regards the analysis of the functioning of a regional centralized network, this has been undertaken using the centralized Catalan network around the two nuclear sites, taking in 8 dose rate measuring stations. The latter study enabled us to get to know the variations in exposure rates in the different localities together with the natural causes that led to them. A calculation model was designed to determine the contribution to the environmental dose from the different radioactive components in the soil and this has been validated with data from the field. Finally, as regards Spain's REVIRA programme, are presented the main outlines drawn up by the Spanish Council for Nuclear Safety. In this respect, the experience gained through this study would prove particularly useful