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2 . 0 Overview of Evaluation Procedures <br /> A total of 45 tests were conducted for this evaluation on the TMS3000 console as well <br /> as the TMS4000 console . The test conditions for these tests are provided in Table 3 . <br /> Out of the 45 Hourly tests that were performed , 23 were run with no leak and 22 were <br /> run with a leak . Testing was conducted with temperature differentials between the <br /> ground and the fuel (that was circulated through the pipeline) at temperature three <br /> different temperature differentials including + 10 , 0 and - 10 degrees Fahrenheit . <br /> Testing was carried out using the manufacturer' s normal test routine . The <br /> Pneumercator LLP -203 Series PLLD was installed with the TMS3000 and TMS4000 <br /> series consoles in the line in its usual configuration . The temperature of the product in <br /> the pipeline tank was varied relative to the surrounding soil temperature . Product was <br /> then circulated through the line for twice the line volume and leaks were induced at <br /> rates equivalent to 3 gal/h at 10 psi for the Hourly testing as specified in the US EPA <br /> protocol . Tests were also run with a zero leak rate ; that is , with the line in the tight <br /> condition . The induced leak rates were established during the circulation period by <br /> introducing a controlled flow through a variable cross-sectional area flow meter. <br /> Testing for this evaluation was performed in accordance with the US EPA protocol . The <br /> EPA test protocol requires that 21 leak tests , 21 tight tests and 3 tests with vapor <br /> present in the line to be conducted , for each of the hourly testing , with various <br /> temperature differentials between product in the line and the ground . <br /> Briefly summarized , the test procedures were as follows : <br /> 1 ) Product was conditioned in the pipeline tank to the required temperature . The <br /> soil temperature was monitored throughout the entire test at distances of 2 , 41 <br /> and 12 inches from the pipeline to determine proper temperature differentials . <br /> 2 ) Product was circulated through the pipeline at a rate of approximately 10 gal/min <br /> for twice the volume of the pipeline ( 118 minutes ) . <br /> 3) Flow in the line was stopped by closing the outlet valve while the submersible <br /> pump was still on . <br /> 4 ) A leak was induced in the line equivalent to 3 gal/h at a pressure of 10 psi for the <br /> Hourly test . <br /> 5 ) The submerged pump dispenser switch was shut off and the leak detector <br /> conducted the test . <br /> Steps 1 through 5 were repeated for every set of tests with both tight tests and induced <br /> leak tests . <br /> 3 <br />