The HAZID knowledge-based system was developed as part of the EC-funded “STOPHAZ” project, whose brief was to investigate the use of software tools for improving safety in chemical process plants. HAZID models the behaviour of a plant qualitatively, so that the potential hazards of equipment failures can be detected. The models in HAZID are based around the signed directed graph, and hazard ide...

PT. Cahaya Baru Shipyard is a company engaged in ship repair. Activities shipyards have various risks, one of which work accidents. The research aims to determine the risk accidents from shipbuilding activities, control and suggestions for improvement. This study identifies risks using Job Safety Analysis (JSA) method assisted by Hazard And Operability Study (HAZOP) potential hazards recommenda...

As part of a preliminary hazard analysis for a new phenol plant, the results of a hazard and operability study (HAZOP) conducted in the initial stages of the project design were re-evaluated due mechanical failure detected during the test operation. Out of the possible mechanical defects for the crude phenol column (CPC), the fact that the lowest risk grade was given to the column without consi...

Standard safety analysis techniques are often ineeective when computers and digital devices are integrated into plant control. The Safeware methodology and its set of supporting safety analysis techniques (and prototype tools) includes modeling and hazard analysis of complex systems where the components may be a mixture of humans, hardware, and software. This paper describes one of the Safeware...