User:Milton Beychok/Sandbox
Large LNG storage tanks are cylindrical and have a low aspect ratio (i.e.,height to width ratio). They are typically constructed with a post-tensioned concrete outer wall and a high-nickel steel inner wall, with insulation between the inner and outer walls.[1] The tanks have domed roofs made of steel or concrete. The storage pressure in such tanks is quite low, less than 10 kPa (0.10 atm). Sometimes underground or partially underground tanks are used for storage.
Smaller cylindrical LNG storage tanks, about 1,000 m3 (264,000 gallons) or less, are usually vacuum-jacketed, pressure vessels. The storage pressure in such tanks may range from less than 50 kPa (0.50 atm) to over 1,000 kPa (10 atm) and they may be either horizontal or vertical.