Unloading Rail Tank Cars: Checklist for Pressure Transfer

This method uses dry air or nitrogen (N2) to pump or pressure transfer material from the cargo tank of the railcar to the storage tank. The Unloading Rail Tank Cars: Checklist for Pressure Transfer app is a checklist that guides the employee through the considerations and safety elements of this potentially hazardous process. Generally, this unloading method is accomplished with 15-35-psig. Vapor discharge from the receiving tank may need to be treated during normal unloading operations. When dealing with hazardous and flammable liquids, safety is critical. The tank containers must be meticulously inspected and evaluated for any cracks or leakage of vapor, and the capacity of the containers should be known before any pumping commences. All workers in close proximity to the unloading should be utilizing the correct personal protective equipment for the own safety and the potential hazards should be fully understood. Personnel involved in unloading operations of rail tank cars containing hazardous materials must be trained and certified in accordance with appropriate transportation regulations both for their safety and the safety of those around them.