Risk assessment for a steam generator (1050 G1) Skikda refinery Algeria, using HAZOP and RQA methods

Similar to other petrochemical plants, different accidents may occur in the refineries and this is due to the treatment of dangerous products in high temperatures. These accidents may lead in some cases to disasters that cause the die of persons similar to that happened in Skikda in 2004 in a LPG plant which cause the die of twenty seven persons, the origin of this accident is an explosion of a steam generator. To avoid such accident in Skikda Refinery steam generators, a HAZOP risk assessment method was chosen to identify the various possible deviations of the system, their causes and consequences on humans, facilities and the environment. A quantification of major risks at the 1050G1 steam generator was performed with the Phast software to estimate the distance effects and consequences of such accidents and to implement suitable means of prevention and mitigation.