6/12/2026 at 7:16:15 PM
For anyone else out there that looked at the picture and their first thought was "are those tanks open to the rain?" thinking they were just open cylindersseems it's called a floating roof tank :
https://en.wikipedia.org/wiki/External_floating_roof_tank
And it prevents vapor loss or needing vapor overhead as the roof floats directly on the surface. Rain/snow water is pumped out off the top of the roof as needed.
by ticulatedspline