What does API 650 recommend to prevent leakage in chemical tanks?

• A. Regular inspections of tank operators
• B. Using low-cost materials to construct tanks
• C. Assessing compatibility of materials with tank contents
• D. Eliminating the need for venting

Answer: (C)

The recommendation to assess the compatibility of materials with tank contents is critical for preventing leakage in chemical tanks. API 650 emphasizes the importance of selecting materials that are not only structurally sound but also resistant to the chemical substances they will store. Different chemicals can have varying effects on materials; for instance, certain substances might corrode metals more quickly than others, leading to leaks. By choosing compatible materials for tank construction, the integrity of the tank is maintained, thus minimizing the risk of leakage and ensuring safe storage practices.

While regular inspections of tank operators are important for overall operational safety, they do not specifically address the fundamental aspect of material compatibility that directly prevents leakage. Using low-cost materials may lead to cost savings in the short term but could compromise the tank’s integrity, leading to failures. Furthermore, eliminating the need for venting is not practical or safe, as proper venting is necessary to accommodate pressure changes within the tank and prevent potential rupture or structural failure. Therefore, assessing the compatibility of materials is the most directly effective approach to preventing leakage.