Pressure pipeline welding technology under pressure
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This post was last edited by kareale88 on 2019-4-9 at 11:33. How to perform pressure welding on liquid ammonia pipelines (0.9 Mpa).
Pressure welding is only applicable in certain specific situations, where the medium is water or steam and the pressure is not high. Flammable and explosive substances are absolutely prohibited.
Thank you for the owner’s suggestion; a qualified professional for leak sealing should be able to handle it.
The principle does not allow it; professional leak sealing involves repairing the leak while the system is under pressure, not welding while under pressure – the methods are different. Welding of flammable and explosive materials is not allowed; the consequences of any accident would be severe, so think carefully!
Absolutely not. After draining the liquid ammonia and purging with nitrogen, it is advisable to flush the pipeline with water. The ammonia detector provides real-time monitoring; welding can only be carried out when there is no ammonia present. Under pressure, only rapid leak sealing can be considered, and copper tools should be used during the sealing process to prevent static electricity.
Thank you to the original poster for the valuable advice:victory: