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Is a salt water pipeline a pressure pipeline?

2019-05-19View Original

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I would like to ask: if the diameter of the salt water pipeline is greater than or equal to DN50 and the pressure is greater than 0.1 MPa, does it count as a pressure pipeline? Since salt water is corrosive, based on the definition of pressure pipelines, I personally think it should be classified as one. Also, when the installation company prepares the documentation for pressure pipelines, why is it necessary to create line diagrams for non-welded materials? For example, in the case of CPVC materials, line diagrams can be used to indicate weld points; but I’m not sure why this is necessary for non-metallic materials. Could you please explain?
Reply #22019-05-20
First, learn the definition of pressure pipelines; then the common knowledge questions that confuse you will no longer be a problem.
Reply #32019-05-26
This one isn’t; there are other requirements besides the pipe diameter and pressure rating.
Reply #42019-05-28
Brine is corrosive; it has a strong corrosive effect on both stainless steel and carbon steel. Given this corrosive nature, does it qualify as a pressure pipeline?
Reply #52019-05-28
To the residents of each building: Saltwater is corrosive; it has a strong corrosive effect on both stainless steel and carbon steel. Given this corrosive nature, does it constitute a pressure pipeline? The original poster mentioned the corrosiveness of the medium. . . How should we understand that the medium is corrosive? Is the corrosion of stainless steel by chloride ions considered corrosion? Is it still corrosive like acids and bases?
Reply #62019-05-28
Brine is corrosive; it has a strong corrosive effect on both stainless steel and carbon steel. Given this corrosive nature, does it qualify as a pressure pipeline? The original poster mentioned the corrosiveness of the medium. . . How should we understand that the medium is corrosive? Is the corrosion of stainless steel by chloride ions considered corrosion? Is it still corrosive like acids and bases?
Reply #72019-06-20
At the end of the regulations, there is an appendix that explains what constitutes corrosive media… As for pressure pipelines, it refers to the degree of hazard, and such hazards include corrosivity… If what you say is true—that eating too much salt can also be fatal—then isn’t salt considered a hazardous substance?
Reply #82019-06-21
Saltwater pipelines are not considered pressure pipelines. Companies that add root pressure pipelines have to pay for inspections, and the cost of these inspections is quite substantial! If a pipe that isn’t actually a pressure pipe is classified as one in your case, be careful lest your boss deducts part of your salary: lol

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