Mohammad Minepour - B.SC.Student,Departemant of Safety Engineering, Petroleum University of Technology, Abadan,Iran

Hazop study is most comprehensive and systematic method for identification of hazards in process plant that include the thorough identification about items of equipments also provides high level of confidence in detection of hazards. This project is derived in a computer- aided way for appropriate Hazop study or generate through reports. It describes the one of Hazop tools that used to improve the Hazop models. It also converse the case study plants with items and some detail about them .Hazop model needs data about operation and maintenance condition of process. The main case study in this paper is recycle gas compressor, this items has high potential for operating or quality problems. We consider abnormal condition in recycle gas compressor such as shut down, impacted hydrogen condition, and other problems associated with causes and consequences are assigned in this paper. The Hazop+ software was designed as an aid to the Hazop team by providing an easy method of customizing, recording, managing and reporting the study. In this study we consider total deviation for all element or parameter as a set of guidewords. Finally we prepare recommendation for each problem which they prevent the losses and damages.

Hazop study; Likelihood; Severity; Guideword; parameter; Catalytic Reformer unit