What type of supports are used for vertical vessels?

What type of supports are used for vertical vessels?

• A. Skirt or Legs
• B. Trunnion Supports
• C. Beams and Pedestals
• D. Saddle Supports

Answer: (A)

When a vessel is mounted vertically, the support must provide a stable, direct path for the entire weight of the shell down to the foundation while keeping the vessel upright and accessible for piping, insulation, and maintenance. Skirt supports or leg supports achieve this best. A skirt is a welded ring or collar around the bottom that distributes the load to a foundation, while legs form a vertical frame connected to base plates anchored to the foundation. This arrangement gives robust vertical load transfer and stability for a tall, upright shell. In contrast, trunnion supports and saddles are designed for horizontal vessels, where the shell needs to be supported along its length and allowed to move or rotate with thermal expansion. Beams and pedestals aren’t the standard primary means of supporting a vertical vessel, as they don’t provide the same direct, stable load path to the foundation. So the typical choice for vertical vessels is skirt or legs.

When a vessel is mounted vertically, the support must provide a stable, direct path for the entire weight of the shell down to the foundation while keeping the vessel upright and accessible for piping, insulation, and maintenance. Skirt supports or leg supports achieve this best. A skirt is a welded ring or collar around the bottom that distributes the load to a foundation, while legs form a vertical frame connected to base plates anchored to the foundation. This arrangement gives robust vertical load transfer and stability for a tall, upright shell.

In contrast, trunnion supports and saddles are designed for horizontal vessels, where the shell needs to be supported along its length and allowed to move or rotate with thermal expansion. Beams and pedestals aren’t the standard primary means of supporting a vertical vessel, as they don’t provide the same direct, stable load path to the foundation. So the typical choice for vertical vessels is skirt or legs.