What is the pressure range in a cryogenic tank car?

The pressure range in a cryogenic tank car is typically between 10 and 75 psi. This range is crucial for the safe storage and transport of cryogenic liquids. Cryogenic materials, such as liquefied natural gas or liquid nitrogen, are kept at very low temperatures and require specific pressure conditions to maintain their liquid state.

Maintaining pressure within this range ensures that the contents do not evaporate and turn into gas, which could lead to increased pressure in the tank and potentially dangerous situations. Additionally, pressure safety relief devices are often designed to function within this specific range, ensuring the safe operation of the tank car. Understanding this pressure range is critical for emergency responders and anyone handling cryogenic materials, as it influences how they approach any potential incidents involving these tanks.