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Ameron Dualoy° Pipe Monitoring System <br /> bottom to top. This method is expected to result in small amounts of air to remain <br /> trapped in the upper portions of some containment fittings. The effects of these two <br /> methods are compared against a known amount of air being injected, in a third test. <br /> The test system was then filled with brine (30% CaC12 by weight) through the <br /> Schrader valve located at the end of the pipe furthest from the reservoir. An air bleed <br /> valve was also located in the short crossover section of the test assembly <br /> approximately four feet from the reservoir. These locations are indicated in Figure 2. <br /> The bleed locations were also used for adding or removing liquid from the interstice <br /> during the testing. <br /> Res�rtl <br /> a <br /> Connector <br /> Crossover <br /> Connector,- <br /> Figure 3. Photo of test apparatus. <br /> Water rather than fuel was circulated through the primary line for safety reasons. <br /> Temperature conditioned water was contained in an insulated barrel and was pumped <br /> through the line at a nominal rate of 6 gal/h. Heating was provided by an automotive <br /> block heater that had the capability to heat the water to more than 100 deg F. Cooling <br /> to 32 deg F was accomplished by adding ice to the reservoir. A surplus of ice assured <br /> that the water would stay near 32 deg during the circulation. A submerged pump <br /> circulated the temperature conditions water through the line. <br /> Pressurization of the primary line was produced by using a small diaphragm <br /> pump capable of producing over 100 psig. Leaks were simulated by using a peristaltic <br /> pump and measuring the rate of brine removal using volumetric methods. <br /> Pipeline Characteristic Tests <br /> Page 4 of 12 <br />