Which statement about plate lining is NOT correct?

Which statement about plate lining is NOT correct?

• A. Lining is installed on the inside of the vessel
• B. Lining can be plate or weld buildup
• C. Lining is welded to the shell
• D. Usually the lining is a less corrosion resistant material than the shell

Answer: (D)

The statement that usually the lining is a less corrosion resistant material than the shell is not correct because, in practice, linings are specifically chosen to enhance corrosion resistance in comparison to the material of the shell. The purpose of applying a lining is generally to protect the underlying base material from corrosive substances encountered in the service environment of the pressure vessel. Therefore, lining materials are typically selected for their superior corrosion-resistant properties, allowing them to act as a protective barrier. For instance, if the shell is made of carbon steel, the lining might be composed of a more corrosion-resistant material like stainless steel or a polymer that provides better longevity and protection against corrosive agents. The first three statements are accurate; lining is indeed installed on the inside of the vessel and can be achieved through plate or weld buildup. Moreover, linings are typically welded to the shell to create a strong bond for effective protection. This specific selection of lining materials is crucial for maintaining the integrity of the vessel and extending its lifespan in corrosive environments.

The statement that usually the lining is a less corrosion resistant material than the shell is not correct because, in practice, linings are specifically chosen to enhance corrosion resistance in comparison to the material of the shell. The purpose of applying a lining is generally to protect the underlying base material from corrosive substances encountered in the service environment of the pressure vessel.

Therefore, lining materials are typically selected for their superior corrosion-resistant properties, allowing them to act as a protective barrier. For instance, if the shell is made of carbon steel, the lining might be composed of a more corrosion-resistant material like stainless steel or a polymer that provides better longevity and protection against corrosive agents.

The first three statements are accurate; lining is indeed installed on the inside of the vessel and can be achieved through plate or weld buildup. Moreover, linings are typically welded to the shell to create a strong bond for effective protection. This specific selection of lining materials is crucial for maintaining the integrity of the vessel and extending its lifespan in corrosive environments.