Leakage issues in underground circulating water pipelines
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In the recent production cycles, our installation has frequently encountered leaks in the underground circulation water pipelines, and these incidents are becoming more and more common. Is there any way to improve this situation? (It’s been a device for over a decade); what is the service life of the underground circulation water pipeline network in your device? What are the main causes of problems with circulating water pipelines? I hope the teachers can provide some guidance. Thank you!
Caused by internal and external corrosion. Internal corrosion is mainly related to water quality, as well as scale formation, pitting under scale, and cavitation.
It is recommended to replace the pipelines during major repairs. It is important to pay attention to controlling water quality on a regular basis
Replace the pipeline decisively; it can’t be repaired. Our factory by the sea has been in use for 8 years, and the underground fire protection pipelines are leaking as well. It’s like playing whack-a-mole – repairs are needed everywhere. We had to use excavators constantly for these repairs. In the end, we decided that it would be more convenient to install pipelines above ground, so we redid the piping system.
Overhead pipelines are good, but the load on the pipe supports must be taken into consideration
This question is unclear; first, we need to understand the cause of the leakage. Internal corrosion, corrosion of the medium inside the pipe ； External corrosion: the outside of the pipe is not protected against corrosion, or it is due to poor quality of the pipe’s anti-corrosion treatment; the backfill soil also causes corrosion to the pipe ； Welding quality factors. Once these three factors are clearly analyzed, the issue can be resolved.
It’s mainly internal corrosion; the external pipelines have anti-corrosion protection, and there are issues with the quality of the circulating water.
This is inevitable. It depends on the quality of corrosion protection of the buried pipes at the time of installation, as well as whether the composition of the water over time is corrosive; our company experiences leaks from time to time, but not very frequently
Since the cause is known, it is necessary to improve the medium or replace the pipes with corrosion-resistant materials.
Since the cause is known, it is necessary to improve the medium or replace the pipes with corrosion-resistant materials.
Corrosion and leakage of underground pipes are mainly caused by soil corrosion. The mechanisms involved are not complicated: oxygen-induced depolarization corrosion, oxygen concentration cell corrosion, and microbial corrosion (both anaerobic and aerobic microorganisms). Damage to the coating due to impacts during pipeline installation, resulting in a \"small anode – large cathode\" configuration, can all lead to corrosion that affects the pipes over a period of more than 7 years. ””