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1 . 0 Introduction The federal Environmental Protection Agency ( EPA) has provided a series of documents ' that describe the procedures that are to be used to verify that leak detection equipment meets the performance requirements of the Federal Register . 2 At the minimum , a leak detector that is capable of detecting leaks of 3 . 0 gallons per hour (gal/hr) at 10 psi or larger on an hourly basis must be installed on all pressurized pipelines . The probability of detecting a leak of stated size must be 95 % or greater with a probability of a false alarm (declaring a tight line to be leaking ) of no more than 5 % . This report presents the results of an independent evaluation of the performance of the Pneumercator LLP-203 Series PLLD for testing on rigid , semi- rigid , flexible and combined pipelines when used in combination with a Pneumercator TMS2000 , TMS3000 or TMS4000 series console . The evaluation was conducted by Ken Wilcox Associates , Inc . at the Fuels Management Research Center in Grain Valley , Missouri . Testing for this evaluation was performed in accordance with the US EPA protocol " Standard Test Procedures For Evaluating Release Detection Methods : Pipeline Release Detection " , May 2019 . A total of 42 tests were conducted to verify that the leak detector could detect 3 gal/hr leaks on Flexible , Rigid and Hybrid pipelines containing diesel fuel . The results of this testing indicate that the Pneumercator LLP -203 Series PLLD for testing on rigid , flexible , and combined pipelines , when used in combination with the Pneumercator TMS2000 , TMS 3000 and TMS4000 console , will successfully perform Hourly Testing on Flexible , Rigid and Hybrid pipeline systems . The TMS2000 series console is identical to the TMS3000 series console with the exception being that the TMS3000 series console has expansion capacity for additional level probes and leak sensors , whereas the TMS2000 series is fixed at 2 level probes and 8 leak sensors . Considering this , only the TMS3000 was used during this evaluation and the results are equally applicable to the TMS2000 console as well . It is also noted that the TMS3000 and TMS4000 had identical performance with the alarm time and passing test time each being 100 % identical for every test since they performed tests on the same pipeline with a shared pressure sensor . The identical results are due to the fact that each console utilizes the same sensor and test algorithm to determine a leak . Considering this , one shared results table is being presented in this report for the TMS2000 , TMS3000 and TMS4000 consoles since they performed tests simultaneously . 2 1 " Standard Test Procedures For Evaluating Release Detection Methods : Pipeline Release Detection " , May 2019 . 2 40CFR Part 280 , Subpart D .