Laserfiche WebLink
Executive Summary <br /> This report presents the results of an independent evaluation of the Vaporless <br /> PLC-5000 Site Controller with Automatic Electronic Line Leak Detection and the 98 LD- <br /> 2000 and LD-2000 PLC Mechanical Line Leak Detectors. The Mechanical Line Leak <br /> Detector portion of the Vaporless system was tested with an electrical interface (LD- <br /> 2000 PLC) and without an electrical interface (LD-2000). The test procedures used <br /> were those described in the EPA protocol "Standard Test Procedures for Evaluating <br /> Leak Detection Methods: "Pressurized Pipeline Leak Detection Systems", <br /> EPA/530/UST-90/010, September 1990. The testing was conducted at an <br /> instrumented test facility which meets the requirements described in Section 4 of the <br /> protocol. The test procedures where those described in Section 7 of the protocol for <br /> systems which use a preset threshold. <br /> A full EPA evaluation was conducted for Monthly Monitoring/Annual Line <br /> Tightness with 0.1 gal/h leak simulations on a fiberglass pipeline that was 3.25 inches in <br /> diameter by 200 ft. in length. The fiberglass pipeline contained gasoline and had a total <br /> volume of 86 gallons. Abbreviated testing was conducted on the fiberglass pipeline to <br /> verify that the mechanical line leak detector portion of the system could detect a 3 gal/h <br /> leak in the same manner as previously evaluated versions of the LD-2000.' <br /> Abbreviated testing was also conducted on a 215 ft. flexible pipeline for Hourly Testing <br /> (3 gal/h) and for Monthly Monitoring/Annual Line Tightness Testing with 0.1 gal/h leak <br /> simulations to demonstrate the system's performance on flexible piping. The flexible <br /> pipeline contained gasoline and had a total volume of 19.7 gallons. <br /> The Vaporless system exceeded the EPA performance standards for leak <br /> detection systems which require a probability of detecting a leak of stated size be 95% <br /> or greater with a probability of a false alarm (declaring a tight line to be leaking) of no <br /> more than 5%. The formal results of the evaluation are reported on the official EPA <br /> forms in Attachment A of this report. <br /> ' Three previous evaluations were conducted on versions of the LD-2000 for Hourly Testing. <br /> Evaluation reports written by KWA, Inc. for the following models of the LD-2000 are available from <br /> Vaporless Manufacturing: LD-2000 and LD-2000S, 11/19/90; LD-2000E and LD-2000E-S, 12/11/92; LD- <br /> 2000T and LD-2000T-S, 7/13/93. <br /> iv <br />