The issue of water hammer
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Why is water hammer likely to occur during the first delivery of material through a pipeline that has never been used for such deliveries? How to handle it
Commissioning of the steam pipeline? At the beginning of operation, the water was promptly cut off from the back route.
What kind of pipeline? (As long as it is operated properly, no water hammer problem should arise, regardless of the type of pipeline.)
There is gas in the pipeline, and the backpressure is low
This situation occurs quite frequently; it is mainly caused by an excessive amount of condensate resulting from the introduction of the medium. In such cases, the water should be shut off promptly, or the pipes should be warmed and drained of water before the medium is introduced.
Cold air contains moisture; uneven heating can lead to water hammer, so avoid rushing during preheating
It seems it’s due to water remaining after the pipeline hydrostatic test
It seems that everyone is talking about the issue of water hammer associated with steam or materials at high temperatures. Water hammer is a phenomenon that occurs everywhere in the transportation of liquid materials. When starting up or shutting down our several-kilometer-long pipelines, it is necessary to do so very gradually; otherwise, there will be severe vibrations
First, the pipes should be warmed up by slowly opening the valves to allow water to flow out. The drain valve should also be opened to remove the cooled water, which will prevent water hammer from occurring
I’m not sure what the medium in the pipeline you’re referring to is It may be caused by an excessive flow rate or the formation of a gas-liquid two-phase flow