US Steel ASME Cryogenic Storage Vessel — 11.1 cu ft, 3900 PSIG

Is this ASME or DOT rated, and what does that allow me to do with it?

This vessel is ASME-certified. ASME vessels are stationary pressure vessels permitted for fixed installation at your facility but not for transport of compressed gases in commerce, which requires DOT certification. You can use this for on-site storage of cryogenic liquids or high-pressure gases within your plant footprint.

What is the MAWP and capacity at service pressure?

The listing states a 3900 PSIG operating pressure rating and 11.1 cubic foot capacity. Whether this operating pressure represents the MAWP or a derated service pressure is not specified—ask the seller for the nameplate MAWP and original design pressure. Confirm whether the 11.1 cu ft is internal volume or usable capacity at rated pressure.

What is the requalification or inspection status?

The listing does not state the last inspection date, requalification status, or National Board number. ASME vessels in cryogenic service typically require periodic inspection per the National Board Inspection Code and your jurisdiction's regulations—ask the seller for the last internal inspection date, hydrostatic test records, and any documented repairs or alterations.

What should I inspect before putting it into service?

Verify the nameplate is legible and matches registration records, then check for visible deformation, corrosion, or cracking especially at welds and nozzles. Cryogenic vessels are prone to thermal cycling fatigue and inner vessel support damage—have a qualified inspector perform NDE on critical welds and pressure test to rated pressure before service. Given the high design pressure, confirm relief valve sizing and setpoint match your intended service, and inspect all vacuum insulation ports and penetrations if this is a vacuum-insulated design.