An Investigation of the Performance of Oxygen Depletion Sensors
SGN, Cadent and Scotland Gas Networks
Phil Bradwell (SGN), Andy Lewis (Cadent)
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Network Innovation Allowance
GD - Future of gas
Health and Safety and Gas Distribution Networks
There is a desire to reduce carbon emissions by the GDNs where several projects have looked at both widening the gas WI and introducing hydrogen blends. Therefore, the learning from this will be beneficial to all networks by allowing the introduction of other gases into the network.
The project aims are to evidence the ODS performance on wider gas qualities and to undertake extensive testing on ODS devices and appliances, coupled with research and analysis on non-methane components (i.e. hydrogen, ethane and propane) to fully understand and inform industry on the safety aspects of ODS systems. Report on the various effect of potential future gases on ODS performance and if/how test standards could be improved to accommodate future gases.
The objectives of this project are to:
- Investigate and analyse the current performance of ODS systems with natural gas containing hydrogen, ethane and propane.
- Understand the underlying science and associated behaviour through extensive laboratory data sets.
- Understand ODS in the modern-day home to evaluate if they still contribute to safety based on a detailed desktop study.
- Confirm (or otherwise) that there are ODS designs and/or methods of deployment that still operate safely with increased amounts of non-methane components such as ethane, propane or hydrogen and determine the levels of these that may limit performance.
- Develop recommended changes to the standards for ODS testing, reflecting the range of gases expected in the networks currently and in the future.
- Liase with the Heating and Hotwater Industry Council (HHIC) to consider a revision to the ODS performance testing standards that may include testing with limit gases.
- Collaborate with the HHIC to progress changes to ODS performance tests in future versions of standards.
The ability to safely inject other gases into the gas networks to increase UK gas availability and de-carbonise the networks.
This project is at a low TRL and it is therefore not possible to provide an accurate estimate of the potential saving. The project can provide savings by the avoidance of nitrogen ballasting and supports the pathway to decarbonisation.