Leak detection and repair have become increasingly critical to the safe and reliable delivery of natural gas and to protecting the environment. Yet many gas distribution companies are finding that their pipelines are aging at a faster rate than they can be surveyed and repaired. That’s because the traditional flame-ionization leak-detection process is hard-pressed to keep pace with emerging demand for more frequent, accurate and efficient surveys and repairs.
For pipeline operators, deciding to implement leak detection is easy. However, determining how to accomplish it is hard. Leak detection is a good tool for quickly raising alarms for theft, identifying product loss due to wear and corrosion to the pipe, and/or preventing environmental events caused by spills. Whether driven by safety and production concerns or regulatory requirements, the method chosen for leak detection has a significant impact on its effectiveness.
For operators of underground transmission pipelines and/or aboveground natural gas processing facilities, finding and fixing “fugitive emission” leaks continues to be a business-critical task.
The Altair® 5 Multigas Detector is described as the ideal choice for confined space entry.
ITT says the corporation’s Airborne Natural Gas Emission Lidar (ANGEL) Services delivers the energy industry’s most comprehensive natural gas aerial leak survey.
Energy Solutions says its PipeWorks provides a suite of software products that includes LeakWarn.
Detcon’s Model 880-N4X is a PLC-based control-and-alarm system designed to monitor and control multiple gas-detection sensors and other field devices.
Crowcon says its new IREX infrared (IR) flammable gas detector is an alternative to pellistor-(catalytic bead) type flammable gas detectors.
Weatherford offers a brochure on its website devoted to subsea pipeline leak detection. Weatherford’s Pipeline & Specialty Services (P&SS) group offers multiple independent leak-detection systems.
MBW offers a vapor extraction unit – V.E.U. – that helps LDC crews locate the actual leak site and remove the residual gas quickly and safely.