A hybrid strategy for batch process hazards analysis

In this paper we present a framework that addresses the three main parts of a process hazards analysis (PHA) study - hazard identification, hazard eva luation, and hazard mitigation. The framework utilizes a hybrid methodology that effectively combines a qualitative digraph model-based technique for performing hazard identification and a quantitative optimization-based tech nique for performing hazard evaluation and hazard mitigation. The systems t hat are used to implement the framework are BatchHAZOPExpert, gPROMS and gO PT. BatchHAZOPExpert is used for hazard identification while gPROMS and gOP T are used for hazard evaluation and hazard mitigation. The application of the integrated framework is illustrated by implementing it on an industrial case study. (C) 2000 Elsevier Science Ltd. All rights reserved.