What is a requirement for membrane liner patches in containment vessel standards?

Membrane liner patches used in containment vessels must have the same properties as the parent membrane material to ensure that they provide adequate protection and maintain the integrity of the containment system. This is crucial because if the patch material does not have similar physical and chemical properties, it could lead to failures such as leaks or breaches under stress, temperature changes, or exposure to corrosive substances.

Using materials with matching properties ensures that the patches will perform in the same manner as the original membrane, providing consistent resistance to environmental factors and maintaining the structural integrity of the containment system. The compatibility among materials is essential for long-term effectiveness and durability, aligning with industry standards and best practices for containment vessels.