ABSTRACT
An assessment study of air quality and metallic material degradation was carried out in the Sarpsborg/Fredrikstad region in 1982–83. Based on air quality modelling, the developed dose-response function for steel was also modelled and mapped for the region. This type of mapping can now be improved.
In the UN ECE International Cooperating Programme for Materials dose-response functions for a range of materials and mapping procedures based on the “critical/acceptable load” concept have been developed. By using these functions and procedures together with the available air quality data and dispersion models the corrosion is modelled and mapped for Oslo for 1985 and 1993. The corrosion modelling in the ArcView geographical information system (GIS) is presented in the ENSIS integrated environmental surveillance and information system as a new AIRQUIS CORROSION module. Integrated in this module is also information from the building register GAB, containing all buildings in Norway. Application of such mapping for cost benefit assessments and maintenance planning is discussed.
