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THE ULTIMATE ANTI-CORROSION PROTECTION FOR YOUR STEEL STRUCTURES
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orrosion is a costly problem. A study by the worldwide corrosion authority NACE International indicated that the global cost of corrosion is estimated to be US$2.5 trillion, equivalent to 3.4% of the world’s Gross Domestic Product (2013)1; Malaysia’s annual cost of corrosion is about RM6.7 billion from RM207.4 billion of GDP2. By definition, corrosion is natural process that converts a refined metal into a more chemically stable form such as its oxide, hydroxide or sulphide state, which resulted in deterioration of the material. It can occur all the time and appears in different forms at different environments. When exposed to open air, immersed in water or surrounded by soil, all unprotected steel is subject to corrosion and consequently will undermine a building’s structural integrity. Therefore, corrosion protection is essential as it will optimise the performance and maximise the lifetime of the steel structure to which it is applied. ISO 12944 CORROSION PROTECTION It is important to note that selecting a coating system that complies with ISO 12944 can provide you with the confidence
26 July-August 2021 | www.b-i.biz
and peace of mind that the corrosion protection you specify will fulfil your project and purpose. ISO 12944 standard aims to assist engineers and corrosion experts in adopting best practices in corrosion protection of structural steel in new constructions. It is widely adopted and globally accepted industry standard, recognised by specifiers worldwide. When selecting the best coating system for your project, you must first consider the environment and then the desired durability. 1. Determine Environment It is crucial to determine the environment surrounding your project. This can be classified as atmosphere category (where the corrosion can occur in interior and exterior of the building), and immersed category (for buildings immersed in water or buried in soil). 1 NACE International. (2016, March). International Measures of Prevention, Application, and Economics of Corrosion Technologies Study. Author. Retrieved from http://impact.nace.org/ documents/Nace-International-Report.pdf 2 Saupi, S. R. A., Sulaiman, M. A., & Masri, M. N. (2015). Effects of Soil Properties to Corrosion of Underground Pipelines: A Review. Journal of Tropical Resources and Sustainable Science, 3, 14–18. Retrieved from https://jtrss.org/JTRSS/volume3/UN-18/3-1-14-18.pdf
