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Title: Airborne differential absorption Lidar - a fast, efficient, and sensitive method of natural gas pipeline monitoring
Category: Pigsource Papers
Downloadable: Yes 
Catalog No.: pg3544
Date of Publication: Oct 1 2009 12:00AM
Price: $25.00 US
Authors: Rulon Simmons
Abstract: In 2004, ITT’s Airborne Natural Gas Emission Lidar (ANGEL) Services introduced a revolutionary method of inspecting pipelines for natural gas leaks, i.e., Differential Absorption Lidar (DIAL) flown on an airplane. This very sensitive, highly-accurate method facilitates inspections of up to 120 miles of pipeline per hour. As natural gas pipeline operators seek ways to increase product volume and profits, some are choosing to uprate their lines to higher pressure. But to do so, each pipe segment must be inspected at the higher pressure to insure safety and integrity before the line can be put back into operation. Traditional methods of inspection cause considerable delay and therefore loss of potential revenue. With its one-of-a-kind system, ANGEL Services can now reduce the days of delay by orders of magnitude. In typical ANGEL Services pipeline surveys, data is shipped overnight to the Ground Data Processing Facility in Rochester, NY, where it is generally evaluated the next day. When companies uprate pipelines, they often desire results even more quickly. To accommodate, ANGEL Services has demonstrated that it can deploy analysts to a survey site and deliver results within hours. Resources for evaluating uprated and/or rehabilitated pipelines have never been better.
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