What type of tank has legs on the roof?

Prepare for the NCCR Boilermaker Test. Includes flashcards and multiple-choice questions with hints and detailed explanations to ensure your success. Gear up for your examination!

Multiple Choice

What type of tank has legs on the roof?

Explanation:
A tank that has legs on the roof is described by a floating roof design. The key idea here is that the roof sits on the surface of the stored liquid and moves up and down as the liquid level changes. To keep the roof stable and properly sealed as it floats, it’s supported by structures around the rim, sometimes referred to as legs or supports. This configuration minimizes the vapor space above the liquid and reduces evaporation. A fixed roof stays rigid and does not ride on the liquid, so it wouldn’t have those roof-support legs. A floating dome roof is just a dome-shaped variant of a floating roof, and a floating roof with supports is essentially the same concept expressed with its supports in mind; the common, concise term used is floating roof.

A tank that has legs on the roof is described by a floating roof design. The key idea here is that the roof sits on the surface of the stored liquid and moves up and down as the liquid level changes. To keep the roof stable and properly sealed as it floats, it’s supported by structures around the rim, sometimes referred to as legs or supports. This configuration minimizes the vapor space above the liquid and reduces evaporation. A fixed roof stays rigid and does not ride on the liquid, so it wouldn’t have those roof-support legs. A floating dome roof is just a dome-shaped variant of a floating roof, and a floating roof with supports is essentially the same concept expressed with its supports in mind; the common, concise term used is floating roof.

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