What is the correct term for the pressure at which a gas system must be designed?

The term "Maximum Design Pressure" refers to the highest pressure that a gas system is designed to safely withstand during its operation. This pressure is crucial for ensuring the integrity and safety of the gas system. Engineers use this parameter to select materials, dimensions, and safety margins in the design process.

Understanding this concept is vital because it dictates how the system will be built, influencing factors such as wall thickness, type of materials used, and safety features implemented.

The other terms, while related to pressure in gas systems, do not specifically denote the pressure for which the system is designed. For instance, "Standard Pressure" often refers to a reference point for measuring performance and does not represent the maximum capacity of the system. "Operating Pressure" is the pressure at which the system normally operates but may vary under different conditions. "Nominal Pressure" is a generalized term that may refer to a standard or average pressure but does not define the extremities or limits that the design needs to account for.