
East Palestine: NTSB Examining Tank Car Hatch Covers
Following the completion of damage assessment inspections of the 11 Norfolk Southern (NS) hazardous materials (hazmat) tank cars, including the five carrying vinyl chloride, that derailed in East Palestine, Ohio, on Feb. 3, the National Transportation Safety Board (NTSB) says it is “concerned that aluminum protective housing covers on some tank cars melted or were consumed when pressure relief devices (PRDs) vented burning gas while functioning as designed to relieve tank pressure.”