Precise risk assessment for fire and explosion in the urban regeneration area

Abstract

Disaster risk assessment at the administrative division level has limitations in evaluating the risk of fire and explosion in built-up urban regeneration areas. To evaluate the risk at a more accurate level, this study proposes nine indicators for a small grid unit risk assessment on the fire and explosion in urban regeneration areas. The disaster risk score for each 10-meter grid unit is calculated by four factors. Each factor is determined by a weighted sum of several indicator scores, and the weight of the indicators is determined by the Analytic Hierarchy Process (AHP). Areas are classified into 5 grades according to the fire and explosion risk score, and in order to verify the feasibility of the assessment framework, the disaster response capabilities of safe(grade 4 and 5) and hazardous (grade 1 and 2) areas are analyzed by conducting a field survey on two areas. The findings of the field survey are compared with the risk assessment. As a result, the proposed precise risk assessment method is verified. The risk of fire and explosion in urban regeneration areas is precisely analyzed with proposed indicators.