Derailment of Freight Train No 50501 in Voluyak – Hrabarsko Interstation Section on 03.09.2016.

At approximately 06:20 AM on 03.09.2016, freight train No 50501 composed by 18 full with coal wagons and electric locomotive no 46033.7 with a gross mass of 1340 tonnes, departed from Voluyak station towards the Goljamo selo station. During the train movement, the twelfth wagon derailed at km 14+055. Since the towing locomotive was very powerful, the crew did not feel the sense of the derailed wagon. Upon entering of the train in the right track curve at km 23 755 and due to a fall in the pressure in the train main air pipe, the locomotive driver undertook quick stopping. In result of the inspection done afterwards, it was found that after the twelfth wagon derailed and inclined were the immediate following five wagons, as the last one of the composition did not derail.

Nobody from the crew was injured. Around 9700 meters of track were destroyed and serious material damage were caused to the derailed six wagons. The movement of trains in the section Voluyak - Pernik was suspended.