Laserfiche WebLink
PLC-5000 Site Controller, LD-2000 and LD-2000 PLC <br /> 2.0 Background <br /> The federal Environmental Protection Agency (EPA) has provided a series of <br /> documents' which describe the procedures which are to be used to verify that leak <br /> detection equipment meets the performance requirements of the Federal Register.4At <br /> the minimum, a leak detector which is capable of detecting leaks of 3.0 gallons per hour <br /> (gal/hr) or larger on an hourly basis must be installed on all pressurized piping. Other <br /> options include the use of equipment which is capable of detecting 0.20 gal/hr on a <br /> monthly basis or an annual test capable of detecting leaks of 0.10 gal/hr. The <br /> probability of detecting a leak of stated size must be 95% or greater with a probability of <br /> a false alarm (declaring a tight line to be leaking) of no more than 5%. <br /> To provide a mechanism for achieving compliance with the requirements for leak <br /> detection on pressurized piping, the EPA has developed a test protocol "Standard Test <br /> Procedures for Evaluating Leak Detection Methods: Pressurized Pipeline Leak <br /> Detection Systems", EPA/530/UST-90/010, September, 1990. The Vaporless PLC- <br /> 5000 Site Controller with Automatic Electronic Line Leak Detection and the 98 LD-2000 <br /> and LD-2000 PLC Mechanical Line Leak Detectors were evaluated according to this <br /> protocol. <br /> 3 "Standard Test Procedures for Evaluating Leak Detection Methods," EPA/530 UST-90/001-7, <br /> March to October 1990. Seven different procedures were developed for different leak detection methods <br /> and released between March and October 1990. <br /> 4 40CFR Part 280, Subpart D. <br /> Page 2 <br />