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Pneumatic test in refinery construction

Kuakoon

Mechanical
Jun 11, 2025
3
In the refinery construction project, the Instrument Air Line Classification List specifies a pneumatic test at 10 bar.

Please advise on the most appropriate method for this test.

Should we use an air compressor or nitrogen gas?

This line runs throughout the area, with a total length of approximately 400 meters and a pipe size of 6-½ inches.

There are no break flanges along the line, which makes the test setup more challenging.

If you have any recommendations or alternative approaches, I would appreciate your advice so I can discuss it further with the client.
 
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This subject discussed within several threads . I will suggest you to look previous threads. When ever i hear pneumatic test , i get nervous. Check with local authorities for the permission and necessary measurements.

 

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  • Air PNEUMATIC TEST shanghai_lng_terminal_failure.pdf
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