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Sep 2020

Corrosion under insulation (CUI) : how to prevent it

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Corrosion under insulation (CUI) is one of the most prevalent issues in the process industry. It poses a significant threat to productivity, revenue stream, and most importantly the safety of those on the job site. Roughly 60% of pipe leaks in refinery and plant piping are linked directly to CUI, meaning that finding a detection solution is paramount to your business’ success.


There’s no one environment that guarantees a specific corrosion rate, however, there are conditions that may lead to a higher incidence of CUI. These include:

· Hot or humid environments

· Climates with high precipitation

· Marine environments

· Atmospheres that are conducive to sweating, or contain chlorides and sulphides


A key part of avoiding corrosion is diligent inspection. While visual assessment is possible in some cases, it is by far the most expensive and time-consuming as it involves the removal and replacement of insulation. Therefore, finding suitable non-destructive testing methods is extremely beneficial. The Russell Bracelet Probe, for example, can detect corrosion at speeds of up to 5 feet/minute through insulation, fireproofing, and aluminium and stainless-steel jackets.

Once corrosion has been detected, you will be able to repair pipes, tanks, and vessels before significant damage occurs. As a result, you save time, money, and ensure the longevity of your equipment. Contact Russell Technologies India today and let us put together an inspection plan that suits your needs.

Corrosion under insulation (CUI) : how to prevent it


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