
Measuring the flow velocity when purging gas pipelines
Table of Contents Purging gas pipelines is a regular process as part of repair work as well as commissioning and decommissioning. This involves either letting gas into a new or repaired pipeline or removing it from a pipeline that is already in operation. The latter is often referred to as inertisation, as the pipe is usually purging with an inert gas to displace the fuel gas. Inert gases are gases with a very slow (chemical) reactivity. The formation of an

