The purging process typically involves the use of inert gases, such as nitrogen or carbon dioxide, to separate fuel from oxygen within pipelines. The manual provides detailed methodologies for conducting purging operations, including calculating the required volume of gas for effective purging and determining the optimal purge rate.  The monitoring of pressure and gas composition continuously during the process to ensure that air concentrations are reduced to acceptable levels before introducing natural gas is an essential step in this complex process.

 

Furthermore, the AGA's Purge Manual emphasizes the need for thorough documentation and training as part of the purging procedure. Operators must be well-versed in the protocols to execute purging safely and efficiently in order for risks to be properly managed. The manual stresses the significance of pre-purge assessments, including system inspections and hazard analyses, to identify potential risks and ensure that all safety measures are in place. By following the guidelines set forth in the Purge Manual, natural gas industry professionals can enhance the safety and reliability of gas operations while minimizing the environmental impact and mitigate safety risks.