What type of tanks operates with a pressure above 15 PSI?

The correct answer identifies high pressure tanks as those that operate with a pressure above 15 PSI. High pressure tanks are specifically designed to store gases or liquids at elevated pressures, which can range significantly, often well above the 15 PSI threshold. These tanks must be constructed to withstand the stress associated with the increased pressure, ensuring they maintain structural integrity and prevent leaks or ruptures during operation.

Low pressure tanks, on the other hand, are designed to operate at pressures below 15 PSI, making them unsuitable for storage applications requiring higher pressures. Non-pressure tanks do not operate under pressure and are typically used for bulk liquid storage without the safety concerns associated with pressurized conditions. Vacuum tanks are specialized for creating and maintaining a vacuum rather than operating at positive pressures, further distinguishing them from high pressure tanks.

Understanding the distinctions between these types of tanks is crucial for emergency responders, as recognizing the characteristics and potential hazards of high pressure tanks can significantly impact safety protocols and response strategies during HAZMAT incidents.