https://engineering.purdue.edu/P2SAC/presentations/documents/Corrosion%20Under%20Insulation%20-%20graduate%20student%20project.pdf

https://insulation.org/fall-summit-2016/wp-content/uploads/sites/7/2016/11/Efficient-Design-to-Mitigate-CUI_2.pdf

Dear Dr. Muhammad Rizwan,

corrosion under insulation (CUI) is any type of corrosion that occurs due to a moisture buildup on the external surface of insulated equipment. The corrosion itself is most commonly galvanic, chloride, acidic, or alkaline corrosion. If undetected, the results of CUI can lead to the shutdown of a process unit or an entire facility, and in rare cases it may lead to a process safety incident.

CUI is one of the (petro)chemical processing industries worse problems having a very elevated cost for its mitigation.

[Source: https://www.eddyfi.com/oil-gas/corrosion-under-insulation-plague-what-you-need-to-know/]

Herewith are two recent papers:

- Corrosion under insulation (CUI): A review of essential knowledge and practice

Reza Javaherdashti

Journal of Materials Science Materials Science & Surface Engineering, 2, (2014).

- Investigating the Corrosion under Insulation (CUI) on Steel Pipe Exposed to Arabian Gulf Sea Water Drops

Elsadig Eltai, K. Alkhalifa, A. Al-Rayashi, E Mahdi, A.M.S Hamouda

Key Engineering Materials, 689:148-153 (2016)

....and two books:

- Comparison of Insulation Materials and Their Roles on Corrosion under InsulationThunyaluk Pojtanabuntoeng (Curtin University) | Hoda Ehsani (Curtin University) | Brian Kinsella (Curtin University) | Michael Brameld (Woodside Energy Limited), NACE International Publisher (2017)

Document ID: NACE-2017-9287

- Corrosion Under Insulation (CUI) Guidelines (2nd Edition), S Winnik Ed., Woodhead Publishing (2015) - eBook ISBN: 9780081007396 - Hardcover ISBN: 9780081007143

Best regards, Pierluigi Traverso

1. https://www.sciencedirect.com/science/article/pii/B9780081011058000176

2. https://www.sciencedirect.com/science/article/abs/pii/S1004954116303366

https://engineering.purdue.edu/P2SAC/presentations/documents/Corrosion%20Under%20Insulation%20-%20graduate%20student%20project.pdf

https://insulation.org/fall-summit-2016/wp-content/uploads/sites/7/2016/11/Efficient-Design-to-Mitigate-CUI_2.pdf