What consideration is necessary regarding the floating roof level after a new tank bottom has been installed?

What consideration is necessary regarding the floating roof level after a new tank bottom has been installed?

• A. The floating roof will find its own level
• B. The support legs can be jacked up or shortened by the same amount as the thickness of the cushion and new bottom plate
• C. The support legs can be jacked up or shortened by the same amount as the thickness of the cushion only
• D. The support can be jacked up or shortened by the same amount as the thickness of the new bottom plate only

Answer: (B)

The answer regarding the necessary considerations for floating roof level after a new tank bottom has been installed highlights the importance of both the cushion thickness and the new bottom plate thickness when adjusting the support legs. When a new tank bottom is installed, it typically involves either replacing or adding thickness to the existing bottom. This thickness affects the elevation of the floating roof. The key factor is that the floating roof must be at the correct operational level to maintain proper function, including managing the vapor space and ensuring that the roof floats correctly on the liquid inside the tank. By jacking up or shortening the support legs by the combined thickness of both the cushion and the new bottom plate, you ensure that the floating roof remains at the appropriate level relative to the tank's liquid content. This adjustment accommodates any additional elevation that arises from both the cushion material, which is typically installed to provide a seal and support the roof, and from the new thickness of the bottom plate itself. Such consideration is critical for maintaining safety, operational efficiency, and structural integrity of the tank system.

The answer regarding the necessary considerations for floating roof level after a new tank bottom has been installed highlights the importance of both the cushion thickness and the new bottom plate thickness when adjusting the support legs.

When a new tank bottom is installed, it typically involves either replacing or adding thickness to the existing bottom. This thickness affects the elevation of the floating roof. The key factor is that the floating roof must be at the correct operational level to maintain proper function, including managing the vapor space and ensuring that the roof floats correctly on the liquid inside the tank.

By jacking up or shortening the support legs by the combined thickness of both the cushion and the new bottom plate, you ensure that the floating roof remains at the appropriate level relative to the tank's liquid content. This adjustment accommodates any additional elevation that arises from both the cushion material, which is typically installed to provide a seal and support the roof, and from the new thickness of the bottom plate itself. Such consideration is critical for maintaining safety, operational efficiency, and structural integrity of the tank system.