Determining a realistic ranking of the most dangerous process equipment of the ammonia production process: A practical approach

OCI Nitrogen seeks to gain knowledge of (leading) indicators regarding the process safety performance their ammonia production process. The current research determines most dangerous equipment by calculating effects resulting from a loss containment using DNV GL's Phast™ dispersion model. In this paper, flammable and toxic release main an plant have been calculated. Such encompassing approach, which can be carried out for entire plant, is innovative has never conducted before. By model, it demonstrated that arising event failure are largest in containing pressurized synthesis gas ‘warm’ liquid ammonia, meaning buffer tanks, product pumps, separator. Most importantly, document substantiates possible rank hazardous based on adverse impact humans calculated effect distance as starting point chance death at least 95%. results calculations used risk mapping chemical or employed applied layer protection analysis (LOPA) establish mitigation measures.