What is the correct sequence to locate a high-pressure steel gas service?

The correct sequence to locate a high-pressure steel gas service is to start with the body of the pipe, followed by the valve or vent. This approach makes sense because the body of the pipe is what contains the gas and is essential for understanding the overall structure and flow of the system. By identifying the body of the pipe first, you can ensure that you are pinpointing the source of gas transportation prior to checking any valves or vents, which are used to control or release gas but do not provide the same level of information about the pipe's condition and integrity.

Understanding the location of the body of the pipe helps technicians assess potential leaks or damages and is crucial for safety. Once the body of the pipe is located, the subsequent identification of valves or vents can verify operational integrity and facilitate maintenance or emergency procedures.

This sequence ensures a logical flow to the inspection process, prioritizing the main structure before considering the control mechanisms associated with it.