Oxygen pipeline purging plan
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Esteemed experts, I have a question and would be grateful if you could help answer it. I currently have an oxygen pipeline over 800 meters long that needs to be purged. The pipeline is available in two specifications: 273 and 219. It features square expansion bends, valves, etc., with a large number of vertical pipes and bends. Blasting purging is planned to be used, but the pipeline is too long and has too many bends; if a full-scale purging is carried out, it may be difficult to clean it thoroughly. If purging is done in segments, there is no purge gas supply along the line, and installation is inconvenient. I was wondering if anyone could provide a more ideal solution. Thank you!
Blasting purging can be employed; all debris such as weld slag, flux residue, mechanical impurities, and dust within the pipeline are expelled along with the airflow, thereby achieving the removal of such debris from the pipeline
Segmented purging should still be used. The valves on the pipeline can be used directly. After the previous stage of purging is completed, to use it as the gas source for the next stage, it is sufficient to disconnect the pipeline.