Abstract
The comparative analysis of key features of the software systems TOXI+Risk and ALOHA is presented. The authors made a comparison of domestic (TOXI+Risk) and foreign (ALOHA) software systems allowing to give the quantitative assessment of impact areas (pressure, thermal, toxic) in case of hypothetical emergencies in potentially hazardous objects of the oil, gas, chemical, petrochemical and oil-processing industry. Both software systems use different mathematical models for assessment of the release rate of a chemically hazardous substance from a storage tank and its evaporation. The comparison of the accuracy of definition of impact areas made by both software systems to verify the examples shows good convergence of both products. The analysis results showed that the ALOHA software can be actively used for forecasting and immediate assessment of emergency situations, assessment of damage as a result of emergencies on the territories of municipalities.
Highlights
Complexity at risk assessment is that it is difficult to assess damages adequately because of lack of reliable information
From all the range of casual parameters exerting impact on risk magnitude the most significant ones are equipment defects, wear rate leading to its depressurization, hazardous substances emissions and emergencies development [6,7,8,9,10]
ALOHA software is intended for chemical emissions modeling for emergency rescue services and designers
Summary
Complexity at risk assessment is that it is difficult to assess damages adequately because of lack of reliable information. Numerous casual parameters (climatic conditions (wind and snow loads), dangerous substance characteristics (mixture or homogeneous state), equipment wear rate, etc.) exert influence on the damage scope. From all the range of casual parameters exerting impact on risk magnitude the most significant ones are equipment defects, wear rate leading to its depressurization, hazardous substances emissions and emergencies development [6,7,8,9,10]. In this research work the authors made a comparison of domestic and foreign software systems that allowed giving quantitative assessment of impact areas (pressure, thermal, toxic) in case of hypothetical emergencies in PHOs of oil, gas, chemical, petrochemical and oil-processing industry.
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