Vulnerabilidade populacional ao risco tecnológico: a dutovia implantada no ambiente urbano da cidade de Madre de Deus/BA

Abstract

The risks of dangerous products raise the prospect of an increased accident in transport through the pipeline, implanted in the urban environment of the municipality in order to affect, through fatality, the group of people living in and around the city. As a result, vulnerable areas were defined in order to determine the number of people affected by the damaging effects of thermal load and overpressure resulting from an accident on the pipeline. Due to the proximity between the pipeline and urban structures, it was necessary to assess the number of people exposed to the harmful effects of an extended accident. The evaluation was carried out through the standards of tolerability of individual risk and social risk which were determined from the iso-risk contour curves and the F-N curves, respectively. Through the risk analysis, it was possible to evaluate the degree of reliability of the pipeline facilities, thus seeking to establish the parameters to reduce and maintain the risk levels to acceptable standards. The determination of vulnerable areas was indicated through 3 reference levels 1%, 50% and 99%, percentages that correspond to the coverage curves of the vulnerable areas, which were represented graphically on the thematic maps for better spatial visualization of the curves reach. The accidental scenarios were carried out from simulations, corresponding to the initiating events with the respective accidental scenarios. For the development of the simulations, several parameters were adopted as input data for the computer system. From the simulated events at the pipeline facilities, the tolerability of the individual risk profile indicated the need to implement measures to reduce the risk and for the social risk, the tracings of the F-N curves, indicated that measures must be applied to reduce the risks in the pipeline.