What is the oxygen capacity of a railroad tank car?

Answer 1

The question is vague, not formed unambiguously. However, if you mean how much breathable oxygen is inside if you are inside one cleaning it, assuming you have ventilated it properly before going in, then the answer is the capacity of the railcar, generally 10,000 to 34,500 gallons or 1337 to 4613 cubic feet of air maximum, minus anything unbreathable in there. If you mean how much compressed oxygen can be transported in a railcar, then the answer is that oxygen is not transported in tank cars, it is transported in compressed gas cylinders such as you see in hospitals and welding shops. GATX has tank cars of 17,000 to 33,500 gallon capacity for pressurized gases such as carbon dioxide, chlorine, anhydrous ammonia, and LPG at up to 375 psi internal pressure. Tank cars for liquid transport, when returning empty, would contain air, but at or near atmospheric pressure.