Fiberglass composites designed for chemical process equipment are generally engineered with a corrosion barrier and a structural layer that will vary in thickness based on its intended use. This paper will focus only on the corrosion barrier, sometimes referred to as a liner, and its various types and intended uses. Three typical types of liner functionality will be covered: chemical resistance/electrical conductivity/abrasion resistance. Without addressing these requirements, optimization of the service life of FRP equipment will not be achieved. Furthermore, neglecting liner considerations could result in a considerable reduction in the structural integrity of the part, similar to under engineering the composite. Corrosion liner considerations are therefore very important in the design and construction of FRP equipment.
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