In a petrochemical industry, an explosion due to a terrorist action occurred in the propylene pipe in the pipe rack resulting in a big fire. About 25 minutes later, caused by the big fire, a second explosion in the butane/propane piping took place. As a result, a huge fire developed in the pipe rack. No people are injured during the accident. The External Emergency Plan is activated. The fire is totally extinguished after 60 hours of fighting by about 100 firemen. The railway is interrupted for 5 days.