PRACTICAL EXPERIENCE ON INSPECTIONS OF ORIFICE PLATES MEASUREMENT SYSTEMS FOR NATURAL GAS

摘要

Everyday, in many countries producers and importers supply large volumes of natural gas produced from domestic fields or purchased abroad. To attend to this need, a whole host of interlinked and coordinated activities and technical installations are required both on the purchase and the sales side. Besides the production and processing facilities, compression stations, transmission and distribution pipelines, operation and control stations, many measuring systems are necessary to quantify the huge volumes of gas commercialized among parts. Natural gas measurement systems can be found in gas production plants, custody transfer stations, citygates, gas processing units and industrial gas consumers. Due to the commercial aspects involved, in most of these cases, gas deliverers and gas receivers operate its own independent measurement systems, always checking if the differences between both measurements are under the tolerances agreed through detailed contracts.