In gas pressure systems, what does "creep" refer to?

Creep in gas pressure systems refers to the gradual increase in pressure over time. This phenomenon can occur due to various factors, including thermal expansion, changes in gas composition, or even minor leaks in the system that allow gas to accumulate and build pressure slowly. Understanding creep is vital for gas fitters as it can lead to safety issues if not monitored correctly.

Monitoring systems for pressure creep is essential in preventing overpressure conditions, which could result in equipment failure or leaks. Recognizing that pressure can change gradually rather than suddenly highlights the importance of regular system checks and maintenance in gas fitting practices.