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Projects: Projects for Investigator
Reference Number NIA_NGGD0022
Title Study of crater formation threshold during gas leakage on high pressure pipes
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 ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 100%
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 2014
End Date 01 February 2016
Duration 25 months
Total Grant Value £92,400
Industrial Sectors Energy
Region London
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , Cadent Gas (99.999%)
  Other Investigator Project Contact , National Grid Gas Transmission (0.001%)
Web Site http://www.smarternetworks.org/project/NIA_NGGD0022
Objectives To develop and validate a methodology and a model in order to determine the limit between crater formation and dispersion of gas in soil for high pressure pipes. The experimental work will be able to identify the conditions (pressure and leak sizes) under which gas soil migration rather than crater behaviour would occur. This would result in the development of a model that could be used to predict future behaviour.
Abstract In order to meet to meet its obligations under current safety legislation including the Pipelines Safety Regulations, National Grid have developed risk models so that it can predict the likelihood and consequences of pipeline failure. These models currently assume that high pressure pipeline leaks always result in a release to atmosphere directly around the location of the failure. However it is known that very small leaks could potentially lead to gas migration through the soil into nearby properties. If this occurs it could significantly affect the predicted level of risk to individuals living near the pipeline. Therefore National Grid are proposing to co-operate in a joint industry project to undertake some large scale experiments to determine when gas migration rather than crater behaviour will occur. The project will perform full scale tests on an experimental site in order to collect data and develop a model that can be used to determine the circumstances under which the gas released from a small leak in a high pressure pipeline will migrate through the soil rather than coming to the surface and forming a crater. The project comprises of four key elements: Literature studyExperimental StudyGround movement 3D videoModel developmentNote : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
Publications (none)
Final Report (none)
Added to Database 14/12/18