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Title: Troubleshooting Liquid Pipeline Losses And Gains
Author: Joseph T. Rasmussen, Michael R. Plasczyk
Source: 2006 International School of Hydrocarbon Measurement
Year Published: 2006
Abstract: Todays pipelines are multi-dimensional systems providing multiple services for many shippers and customers. Pipeline systems may connect multiple origins and destinations, and carry various products across long distances with changing profiles, pipe dimensions and directions. Monitoring pipeline gains and losses employs tools and analysis methods developed specifically to troubleshoot pipeline variances. Examination of pipeline gains and losses uses some basic statistical tools as well as intuitive and creative insight into what controls gains and losses. The basic tool for evaluating system performance is Loss/Gain which is a measure of how well receipts, deliveries and inventory match up over a period of time. The concept is similar to that used for leak detection, but usually covers a longer time period than does leak detection. Loss/gain is a measure of the quality of the overall measurement in a system, and excessive loss/gain can signal the need for an investigation to identify causes and possible corrective actions.

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