In fuel gas systems, what does the term 'upstream' refer to?

The term 'upstream' in fuel gas systems refers to the side of the system before the gas reaches the appliance. This encompasses all the components and infrastructure that supply the gas, including pipes, valves, and regulators, prior to its point of use. Understanding this concept is crucial for maintenance and safety procedures since it delineates the flow of gas from its source to the appliance where it is utilized.

Using this terminology helps professionals in the field to communicate effectively about the various points within a gas system, especially in terms of pressure management, gas quality, and troubleshooting potential issues. Recognizing what 'upstream' encompasses allows for better planning and execution of installations and repairs, ensuring that systems are safe and compliant with regulations.