Facility Siting of an Ammonia-Urea Complex Based on Risk Analysis

Abstract

In this study facility siting of an existing ammonia-urea complex is evaluated based on risk analysis. A number of critical process units of the plant are selected as the sources of toxic release and overpressure. Locations of control room and two operators’ shelters are considered with respect to four critical units. The consequences due to toxic release and blast overpressure are modeled for various worst case scenarios developed in critical units. Both structural damage and human mortality/injury are converted into risk factors and locations with minimum risk factors within plant area are identified for the probable siting of the control room and operators’ shelters. The findings are compared with the existing layout of the ammonia-urea complex considered.