Fiberglass reinforced plastic (FRP) tanks are common storage tanks for a wide variety of hazardous chemicals from hydrochloric acid to sodium hydroxide both with pHs ranging from 2 to 14, respectively. The resin layer is the designed to protect the tank shell from corrosion, or chemical attack, that can thin or penetrate through the resin layer and attack the structural layer. Many FRP tanks that store hazardous products a part of a closed process and therefore can not be r