OPERATIONS AND MAINTENANCE
LNG terminal water pipeline
A COAT FOR ALL SEASONS
How to expand the lifespan of assets that are vulnerable to corrosion I 32
n the ongoing battle against corrosion, the pursuit to extend the lifespan of assets has led to a consideration of
corrosion prevention rather than just protection. Concerns regarding coating performance often lead to disputes over responsibility, involving manufacturers, contractors, and project timelines, potentially compromising quality. However, when analysing the
suitability of a visco-elastic coating system, the performance conditions shoud be considered as well as the ability to be applied in often diff icult
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in-fi eld conditions during the design and engineering phase. Advancements in coating
technologies, particularly those incorporating coatings commonly known as visco-elastic coating, coatings, more specifi cally polyisobutene (PIB) based coatings, are proving eff icient and safer to apply than comparable products while reducing the need for maintenance over the lifetime of an asset.
CONVENTIONAL COATING SYSTEMS The conventional method of corrosion
prevention involves creating a barrier over the material surface to shield it from the environment. Traditionally, liquid coatings such as epoxies and paints are frequently used to coat many diff erent above and below- ground assets. However, these coatings often need to bond to a substrate with a specifi c surface profi le creation through abrasive blasting, and thus, require stringent surface preparation and application QA/QC before, during and post application. Within a practical application environment, for any type of coating technology, the
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