CPI 23'-0" x 20" ASME Cryogenic Storage Tank — 34.1 cu ft, 5500 PSIG

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

This is an ASME Code fabricated vessel. ASME certification allows it to be used as a stationary storage vessel at your facility; it cannot be transported filled on public roads, which requires DOT certification. If you need a transportable unit, you'll want to look for DOT-rated cylinders or tube trailers instead.

What is the MAWP and capacity at service pressure?

The vessel is rated for 5500 PSIG with a capacity of 34.1 cubic feet. The listing does not specify whether this capacity is at the maximum allowable working pressure or at a different fill condition, so confirm with the seller whether 34.1 cu ft is the water capacity or the gas capacity at rated pressure.

What is the requalification or inspection status?

The listing does not provide information on current inspection status, last hydrostatic test date, or remaining certification validity. You'll need to ask the seller for the last retest date and any available inspection records; ASME vessels typically require periodic internal and external inspection per your jurisdiction and the National Board, though unlike DOT cylinders there's no federally mandated retest interval.

What should I inspect before putting it into service?

Have a qualified inspector review the ASME U-1 nameplate data, examine the outer vessel and vacuum jacket for dents or impact damage, and verify the vacuum integrity if this is a vacuum-insulated design. Check all valves, pressure relief devices, and piping connections; request any available hydrostatic test records and past service history to determine if a new hydro test or internal inspection is warranted before pressurization.