Ayda Movahed Vala - Master student of railway engineering, IUST/railway department,
Fatemeh Sadat Sajjadian - Master student of railway engineering, IUST/ railway department,
Mahmood Mohammadi - Master student of railway engineering, IUST/ railway department,

All over the world, and particularly in industrialized countries, the transport of hazardous materials has till years a continuously increasing trend. Public concern is focused mainly on road and rail transport, since the routes used for road and rail transportation of hazardous substances necessarily come closer and sometimes also cross densely populated areas. Accidental releases of flammable and toxic material from road or rail tankers were the initiating event of accidents with multiple fatalities. This article compares the risk of LPG transportation by road and rail. The main goal of this research is to assess the transportation risk of this material to Zahedan and finally choosing the best shipping method. This research evaluates risk scenarios in terms of area and population affected by the incident with QRA (Quantitative Risk Analysis) method, and uses ALOHA and GIS software in order to risk assessment. According to previous studies, we have concluded that rail transportation risk of LPG to Zahedan is lower than road.

risk analysis, rail transportation, road transportation, QRA, hazardous materials