Mechhoud El-ArkamZennir Youcef2024-06-052024-06-052017-12-012543-3792http://dspace.univ-skikda.dz:4000/handle/123456789/1988In this paper we present a HAZOP Assistant based on D-higraphs and dedicated to a functional modeling technique that gathers functional and structural information of the process under study. This work is applied to the study of an industrial case - High Density Polyethylene reactor part of the CP2K plant situated in the petrochemical platform of Skikda- and its results are compared with the conventional HAZOP study and SADT method.enArticle