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TECHNICAL INFORMATION BULLETIN <br />THE GA27P (ARMOR SPRAY) <br />GA27P is a specially formulated, chemically resistant, <br />epoxy resin -based product, structurally reinforced with glass <br />fibers. It is specifically designed as a 1/8" thick coating, <br />fusion bonded to the inside surface of an exisitng tank, <br />reinforced with various materials forming an impervious shell <br />that prevents and stops leaks. It eliminates corrosion from <br />within the tank and retards corrosion from outside elements <br />in the soil. <br />This technical bulletin outlines the specifications of <br />Bridgeport Chemical Corporation's Glass Armor method for <br />solving the extremely serious, costly, and hazardous problem <br />of replacing leaking underground gasoline storage tanks in <br />the service station. <br />Gasoline by itself cannot cause corrosion, but water and <br />oxygen that gasoline picks up does the damage. At high - <br />product temperatures, gasoline is more heavily saturated with <br />air and water than at lower temperatures. Then as the <br />product cools, the solubility of water in gasoline decreases <br />and droplets of water form and settle out on the tank metal. <br />When the gasoline temperatures drop from 140'F. to 80-F., as <br />much as 0.5 lbs. of water comes from 100 lbs. of hydrocarbon <br />(about 1,616 lbs. of gasoline). These figures indicate a <br />6,000 gallon tank could have approximately 23 gallons of <br />water in each load. <br />The rate of corrosion also depends on the type of <br />gasoline and the type of crude used in the refining process. <br />The most highly aromatic fuels have a greater water <br />solubility and are more corrosive (premium is more corrosive <br />than regular which in turn is more corrosive than kerosene). <br />The Glass Armor epoxy resins have long been recognized <br />by corrosion engineers as a superior material unique in <br />properties that make them one of the most valued tools to <br />combat corrosion. <br />Bridgeport Chemical Corporation, who pioneered the <br />process of lining leaking gasoline tanks, has factory trained <br />franchise applicators serving the petroleum industry from <br />coast to coast. All Glass Armor applicators follow this <br />specification using the GA27P line of epoxy coatings. <br />GA27P bonded to the interior surface of the steel <br />storage tank results in a corrosion -proof liner built within <br />the shell of the existing steel tank. This material gives a <br />Page 1 <br />