Leak Detection and Repair
The Act requires industrial facilities to implement a Leak Detection and Repair (LDAR) program to monitor and audit a facility's fugitive emissions of volatile organic compounds (VOC). The program is intended to identify and repair components such as valves, pumps, compressors, flanges, connectors and other components that may be leaking. These components are the main source of the fugitive VOC emissions.
Testing is done manually using a portable vapor analyzer that read in parts per million (ppm). Monitoring frequency, and the leak threshold, is determined by various factors such as the type of component being tested and the chemical running through the line. Moving components such as pumps and agitators are monitored more frequently than non-moving components such as flanges and screwed connectors. The regulations require that when a leak is detected the component be repaired within a set amount of days. Most facilities get 5 days for an initial repair attempt with no more than 15 days for a complete repair. Allowances for delaying the repairs beyond the allowed time are made for some components where repairing the component requires shutting process equipment down.
Read more about this topic: Clean Air Act (United States)
Famous quotes containing the words leak and/or repair:
“The office ... make[s] its incumbent a repair man behind a dyke. No sooner is one leak plugged than it is necessary to dash over and stop another that has broken out. There is no end to it.”
—Herbert Hoover (1874–1964)
“The United Nations cannot do anything, and never could; it is not an animate entity or agent. It is a place, a stage, a forum and a shrine ... a place to which powerful people can repair when they are fearful about the course on which their own rhetoric seems to be propelling them.”
—Conor Cruise O’Brien (b. 1917)