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Projects: Projects for Investigator
Reference Number NIA_NGGD0089
Title MEG Saturation Monitoring
Status Completed
Energy Categories Fossil Fuels: Oil Gas and Coal(Oil and Gas, Refining, transport and storage of oil and gas) 100%;
Research Types Applied Research and Development 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Physics) 50%;
ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 50%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
Cadent Gas
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 January 2017
End Date 01 December 2017
Duration 11 months
Total Grant Value £523,847
Industrial Sectors Technical Consultancy
Region London
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , Cadent Gas (100.000%)
Web Site http://www.smarternetworks.org/project/NIA_NGGD0089
Objectives The objectives of the project Validate the adsorption tube method including how gas flows from main to sample tube (or if too variable understand the variability). Look at whether adsorption tube procedures and equipment could be improved leading to improved accuracy, fewer failed results and possibly higher reported saturation levels. Improve the Owlstone method by creating a configuration that minimises variability, test and clean down time and by robustly packaging the unit such that it is easy to use on-site. Validate the Owlstone method and ensure it is well correlated to the tube method. Identified improvements to the existing methodology that could be implemented and lead to improvement in results. Successful demonstration of Owlstone rig giving accurate MEG saturation test results.
Abstract The introduction of dry natural gas in the 1970s caused the yarn in these joints to dry out, creating leakage paths. For many years National Grid has replaced the lost moisture by operating gas conditioning plant, which injects mono-ethylene-glycol (MEG) into the gas stream at selected system source points chosen because of high levels of lead yarn joints downstream. The MEG is adsorbed by the yarn causing it to swell and re-seal the leak path. The current method of measurement of MEG saturation levels in the system requires the taking of samples and analysis by a laboratory. This can give rise to inaccuracies and a time lag to receive results. Therefore, there is a need to review the current testing methodology and/or develop a methodology that can give immediate accurate results to enable further MEG fogging projects. A test rig will be developed, built and commissioned to accurately add a known amount of MEG vapour to an air or natural gas stream at stand-pipe flow rates. This rig will then be used to investigate, improve and validate the existing adsorption tube method and the new Owlstone based method considering the entire process from gas leaving the main to being measured. The new Owlstone based method will be packaged into a robust unit suitable for on-site use.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
Publications (none)
Final Report (none)
Added to Database 10/09/18