Q. Explain about Vertical Vessels?

Vertical vessels shall normally be designed as self-supporting units, and shall resist overturn based upon wind or earthquake considerations.

1). Skirts or lugs shall be used to support tower or large vertical vessels, and are preferred for vessels having top-entering agitators.

2). Leg supports shall be limited to spherical and cylindrical vessels that meet the following requirements:

• Design temperature does not exceed 450^oF (232^oC).

• Service is noncyclic and nonpulsating.

• Vessel height-to-diameter ratio does not exceed 5. (Height is defined as the distance from base of support to the top tangent line of the vessel.