Product category:
Oil & Gas Fiscal Flowmetering systems
News Release from: Emerson Process Management | Subject: Daniel SeniorSonic
Edited by the Processingtalk Editorial
Team on 18 June 2007
Upgrade for gas fiscal monitoring in
Macedonia
Emerson has installed a Daniel SeniorSonic meter with diagnostics alongside orifice technology at a custody transfer gas metering installation in Macedonia, to demonstrate the accuracy of ultrasonics
The scope of work undertaken by Emerson Process Management included design, fabrication, inspection, test, and delivery of a complete Daniel gas metering system at the Makpetrol Border Station in Macedonia Makpetrol were keen to introduce a technologically advanced ultrasonic measurement method to the gas metering station, which measures gas flow from a pipeline originating in Russia
This article was originally published on Processingtalk on 7 Nov 2005 at 8.00am (UK)
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The original measurement system consisted of three streams utilising orifice measurement technology and Makpetrol wanted to confirm the ability of the Daniel SeniorSonic meter as an accurate, reliable, cost-effective alternative for custody transfer measurement.
Emerson assumed full system responsibility, starting with commissioning service and guaranteeing the operability, accuracy and quality of all components including conformance to local and national authority and code requirements.
The project also included a comprehensive operation and maintenance training package for site personnel.
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The new metering system was commissioned throughout 2005, with the commissioning timetable having been designed to minimise downtime.
Since then, the difference between orifice and SeniorSonic base volume flows has been typically 0.5% or less.
The advanced diagnostic checks and inter-comparisons available from the Daniel SeniorSonic metering system have given Makpetrol a higher level of confidence in the Daniel metering accuracy than was ever possible before.
This confidence, along with the stable accurate performance of the meter led to the Daniel SeniorSonic being approved for use for primary flow measurement by Makpetrol and Gazprom.
Commenting on the success of the new metering system, Milos Colovic, Manager of Metrology Dept and Head of Border Station at Makpetrol said, "We are now certain that we measure gas flow accurately as the different physical measuring principle of USM and orifice prevents a systematic error affecting the measurement result of the two gas meters.
Pay/check configuration of the metering system allows us to verify that the meters are performing correctly".
Based on the success of this installation which has been proven to be accurate, reliable and user friendly, Makpetrol is planning to extend the use of this new technology based on the Daniel SeniorSonic meter, to a third metering line.
Emerson supplied the two new Daniel metering streams as pre-assembled flow metering tubes, each containing a 10inch SeniorSonic ultrasonic flow meter, Daniel Profiler flow conditioning plate, up and downstream pipe spools and pressure and temperature transmitters.
Each stream was designed to accurately measure the full site flowrate of 180000 Standard M3/Hr and each meter, along with its own up and downstream pipe spools, was flow calibrated in high pressure natural gas at the Advantica calibration facility in the UK.
The streams are designed to comply with both AGA-9 and ISO-5167 requirements.
Flow measurement and analysis calculations, as well as PID flow control are handled by Daniel FloBoss S600 Flowcomputers.
Gas quality monitoring is provided by Daniel Model 500 Gas Chromatographs with Model 2350A controllers.
To maximise ease-of-use the system was supplied with a Daniel DMS+ Supervisory System which generates the border station hourly, daily, weekly and monthly totals for the meter readings.
To take advantage of the advanced diagnostic capability of the Daniel SeniorSonic, the operator uses Daniel CUI 4.10 software.
The PC based software allows the operator to monitor advanced diagnostic parameters such as gain, signal-to-noise ratio, performance, VOS, profile geometry checks and timing checks.
These diagnostics can be used to monitor not only the health of the USM components (transducers and electronics), but also used to check for changes in pipeline condition which could impact the accuracy of the measurement system. Request a free brochure from Emerson Process Management ...
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