Which factor is crucial for tank stability according to API 650?

• A. Visual design
• B. Drainage strategies
• C. Insulation type
• D. Color of the tank

Answer: (B)

The crucial factor for tank stability according to API 650 is drainage strategies. Proper drainage is essential for maintaining the structural integrity of a tank. Effective drainage helps prevent the accumulation of water or other liquids around the base of the tank, which can lead to soil erosion, instability, and potential failure due to hydrostatic pressure from excess liquid. Additionally, adequate drainage systems can mitigate the effects of water pooling, which could compromise the foundation and the overall stability of the tank. This aspect is particularly important in areas prone to heavy rainfall or flooding, where water management plays a significant role in ensuring that the tank remains safely anchored and operational.

While visual design, insulation type, and color of the tank may have their own importance in terms of function, aesthetics, or thermal management, they do not directly influence the stability of the tank structure as drainage strategies do.