Surveillance system for air pollutants by combination of the decision support system COMPAS and optical remote sensing systems

摘要

Abstract: COMPAS is a decision support system designed to assistin the assessment of the consequences of accidentalreleases of toxic and flammable substances. One of thekey elements of COMPAS is a feedback algorithm whichallows us to calculate the source term with the aid ofconcentration measurements. Up to now the feedbacktechnique is applied to concentration measurements donewith test tubes or conventional point sensors. In thispaper the extension of the actual method is presentedwhich is the combination of COMPAS and an opticalremote sensing system like the KAYSER-THREDE K300 FTIRsystem. Active remote sensing methods based on FTIRare, among other applications, ideal for the so-calledfence line monitoring of the diffuse emissions andaccidental releases from industrial facilities, sincefrom the FTIR spectra averaged concentration levelsalong the measurement path can be achieved. Theline-averaged concentrations are ideally suited ason-line input for COMPAS' feedback technique.Uncertainties in the assessment of the source termrelated with both shortcomings of the dispersion modelitself and also problems of a feedback strategy basedon point measurements are reduced. !5