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Title: The Developing Rold Of Dual Rotor Gas Turbine Meters
Author: Matthew J. Forcey
Source: 2000 International School of Hydrocarbon Measurement
Year Published: 2000
Abstract: The aging North American pipeline systems are posing new challenges for todays transmission, and utility companies. While billions of dollars worth of natural gas are moved through the domestic pipeline system each year, more than 50% of it is moved in pipelines that are 30 or more years old. These systems are now more susceptible to corrosion, wear, harsh flow profiles, and fluid in the gas stream. These in-line problems are a concern as most meter technologies are unable to measure accurately under conditions of harsh flow profile and contamination even a minor accuracy shift can result in millions of dollars in under and or over billings each year. These problems are exacerbated by a reduction in maintenance budgets at pipeline and utility companies that can allow excessive component wear to develop within meters and unstable meter or upstream conditions to go undetected. Todays gas measurement devices, therefore, must be able to maintain their accuracy despite harsh flow profiles, corrosion, and component wear, while performing selfdiagnostics to replace information formerly gathered by maintenance personnel.

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