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News Release from: Krohne | Subject: Krohne Optimass
Edited by the Processingtalk Editorial
Team on 25 May 2005
Krohne helps Advantica evaluate gas pipe
material
Advantica at Spadeadam in Cumbria, is using Krohne Optimass Coriolis mass flowmeters in critical tests to evaluate new pipe material for transporting gas from offshore fields to refineries
The Advantica world leading test centre, the Spadeadam Test Site in Cumbria, is using Krohne Optimass Coriolis mass flowmeter in critical tests to evaluate new pipe material for transporting gas from offshore fields to refineries Natural gas is a complex mixture of gases which can vary in composition from field to field
This article was originally published on Processingtalk on 15 Jan 2008 at 8.00am (UK)
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To ensure pipes will withstand the conditions in which they will operate, trials of new pipe materials are carried out with precisely the same combination of gasses that the pipe will carry.
The Krohne Optimass mass flowmeter is being used in complex tests on a 300 metre length of pipe constructed from the new material.
It is being used to replicate precisely the gas conditions found at the place of installation to test the pipe's toughness and resistance to fracture.
Further reading
Wax maker selects Optimass Coriolis for accuracy
UK wax manufacturer Kerax has installed a Krohne Optimass 7300 Coriolis mass flowmeter to improve the accuracy of production processes at its plant in Chorley, Lancashire
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Krohne Optimass Coriolis mass flowmeters have been installed by oil company OJSC Ulyanovskneft at two loading stations at the Ulyanovsk oil fields in Russia
These are required to meet stringent regulations and standards.
During an eighteen stage process to test the pipe material, different gases, including propane, ethane, carbon dioxide and butane, are pumped through the Optimass and into the pipe at rates of between 550 and 1,500 kg/hr and temperatures from - 30C to 15C.
The gases range in density from 584 to 460 kg/m3 and viscosities from 0.081 to 0.16 cp.
The Optimass measures precisely the amount of each gas passed into the pipe and enables scientists at Spadeadam to reproduce exactly the natural gas and conditions found at the field where the pipe is planned to be installed.
Measurement data from the Optimass is output to a data logger which records the amount of gas introduced during each step in the experiment.
Sensors in the pipe itself are linked to a gas chromatograph that analyses the gas composition.
Testing the new pipe materials is an expensive and lengthy process.
Trials can take a year to complete and the different gases used can cost in excess of GBP100,000.
Because of this there is often only one chance to carry out live tests.
"We chose to use the Optimass because it is the best instrument on the market," said Dr John Evans at Advantica.
"We evaluated several others but because of the critical nature of our experiment and the costs involved we needed to be totally confident in the measurement accuracy of the flowmeter we used." The Wellingborough-based Krohne Optimass Coriolis mass flowmeter was the first of its kind to incorporate a single straight tube design.
It is available in a range of sizes and can be used for low and high flow rate applications.
Designed to meet ATEX, FM and CSA standards, the Optimass is suitable for use in hazardous conditions.
Wetted parts of the instrument can be manufactured from titanium, stainless steel or Hastelloy and each unit is made in accordance with European Pressure Equipment Directives (PED).
The Optimass will operate reliably and accurately under the most demanding conditions.
It incorporates Krohne patented ASP (Adaptive Sensor Technology) which tunes each meter independently of external forces and fluid density.
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