Monitoring internal corrosion of a pipeline

In summary, internal corrosion is the gradual deterioration of pipeline walls due to chemical reactions with the transported fluid. It is monitored through various techniques such as ultrasonic testing and corrosion coupons. The main causes of internal corrosion are corrosive substances in the fluid and pipeline material and conditions. Monitoring helps maintain pipeline integrity through early detection and preventive measures. Neglecting to monitor internal corrosion can result in serious consequences, including pipeline failures, environmental damage, and safety hazards.
  • #1
chetanladha
59
0
Hi All,

I am wondering if there is any way to monitor internal corrosion in pipelines (without using pigs and interrupting the flow)?

May be ultrasound waves could be used for this purpose, however I am not sure if it would be able to give a clear picture of extent of corrosion.

Thanks for reading.
 
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  • #2
ultrasound can show material loss, depending on the modulation of the waves used. Comparing different modes can show this.
 

1. What is internal corrosion and why is it a concern for pipelines?

Internal corrosion is the gradual deterioration of the inside walls of a pipeline due to chemical reactions between the pipeline material and the transported fluid. It is a concern because it can weaken the pipeline, leading to leaks, ruptures, and potentially catastrophic failures.

2. How is internal corrosion monitored in pipelines?

There are several methods for monitoring internal corrosion in pipelines, including direct assessment techniques such as ultrasonic testing and internal visual inspections, as well as indirect methods such as corrosion coupons, electrical resistance probes, and corrosion monitoring pigs.

3. What are the common causes of internal corrosion in pipelines?

The main causes of internal corrosion in pipelines are the presence of corrosive substances in the transported fluid, such as oxygen, carbon dioxide, or hydrogen sulfide, as well as the type and condition of the pipeline material, temperature, and flow rate of the fluid.

4. How does monitoring internal corrosion help maintain the integrity of pipelines?

Regular monitoring of internal corrosion allows for early detection and identification of potential corrosion issues in pipelines. This enables operators to take proactive measures, such as cleaning, coating, or repairing the pipeline, to prevent further corrosion and ensure the integrity and reliability of the pipeline system.

5. What are the consequences of not monitoring internal corrosion in pipelines?

If internal corrosion is not properly monitored, it can lead to severe consequences, including pipeline failures, environmental damage, and safety hazards. It can also result in costly repairs, downtime, and disruptions to the transportation of fluids, affecting the economy and public health and safety.

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