Above ground pressure facility tanks are categorized into which two types?

• A. Low-pressure and mid-pressure
• B. Low-pressure and high-pressure
• C. High-pressure and vacuum
• D. Compressed and liquefied

Answer: (B)

Above ground pressure facility tanks are categorized into low-pressure and high-pressure types based on the pressure they can safely contain. Low-pressure tanks are designed to operate at pressures typically below 0.5 psig (pounds per square inch gauge), which means they are suitable for storing liquids that do not require high pressure to be maintained. In contrast, high-pressure tanks can safely hold liquids at greater pressures, often exceeding 15 psig, making them suitable for storing gases or liquids that must be kept under substantial pressure to remain in a liquid state.

Understanding the categorization is crucial for proper handling, operational procedures, and safety measures. It helps in determining the appropriate design specifications, material requirements, and safety features of the storage tanks, ensuring that they meet regulatory guidelines and reduce the risk of leaks or catastrophic failures. As such, recognizing the distinction between low-pressure and high-pressure tanks is essential for anyone involved in the management and operation of hazardous materials storage.