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`S.� 100 <br /> The benefits of Xerxes® fiberglass underground storage tanks <br /> The best choice for underground storage of petroleum products <br /> is a structurally strong, corrosion-resistant, easily installed and <br /> cost-effective vessel.That's what a customer finds in every Xerxes <br /> V tank,which is designed and manufactured with high-quality resin <br /> and glass,and features unique integral ribs.Like structural beams, <br /> integral ribs add strength, and because the ribs and tanks are <br /> r„ made of the same materials and are manufactured simultane- <br /> ously, the result is an extremely robust product. <br /> kN. The solution to new corrosion concerns <br /> Made of corrosion-resistant materials, Xerxes fiberglass tanks <br /> eliminate the possibility of either external or internal rusting of <br /> in the tank. For years, the concern in the petroleum industry was <br /> about external corrosion.Since fiberglass doesn't rust,and steel <br /> can, this gave fiberglass tank manufacturers a natural edge. <br /> v Today,corrosion concerns in petroleum tanks center on internal <br /> corrosion, an even more pressing matter because of new fuels, <br /> such as ethanol blends and biodiesels.Together, the removal of <br /> lead from gasoline and the growing popularity of biofuels have <br /> led to heightened awareness about corrosive environments inside for and removal of water from tank bottoms. In contrast, fiber- <br /> storage tanks. glass tanks require no maintenance against corrosion. <br /> A certain amount of water usually exists in the bottom of tanks, Many believe that this new concern about internal corrosion is <br /> and that can lead to the microbial-induced corrosion(MIC)in steel the reason the Steel Tank Institute(STI)and some steel-tank man- <br /> tanks.Ethanol increases the likelihood of water in tanks,and the ufacturers have significantly reduced their warranty coverage, <br /> resulting microbial growth.To date,there is not a single reported from 30 to 10 years.Since Xerxes fiberglass tanks are compatible <br /> instance in a fiberglass tank of failure due to internal corrosion with the new biofuels, including E10, E85 and biodiesel blends, <br /> caused either by MIC or by water bottoms. Based on widely dis- Xerxes confidently holds to its longstanding 30-year warranty, <br /> tributed advice, combatting internal corrosion in steel tanks re- which explicitly provides 30 years of internal corrosion coverage <br /> quires regular maintenance—in the form of frequent inspection "with or without water bottoms." <br /> V <br /> s <br /> 7773 <br /> .r a <br /> r <br /> I <br /> 3 <br />