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| Reference Number | NIA2_SGN0044 | |
| Title | Hydrogen Ignition Risk from Static & Autoignition - Stage 1 | |
| Status | Completed | |
| Energy Categories | Hydrogen and Fuel Cells (Hydrogen, Other infrastructure and systems R&D) 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 SGN |
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| Award Type | Network Innovation Allowance | |
| Funding Source | Ofgem | |
| Start Date | 01 December 2023 | |
| End Date | 31 March 2024 | |
| Duration | ENA months | |
| Total Grant Value | £72,267 | |
| Industrial Sectors | Energy | |
| Region | South East | |
| Programme | Network Innovation Allowance | |
| Investigators | Principal Investigator | Project Contact , SGN (99.998%) |
| Other Investigator | Project Contact , Northern Gas Network (NGN) North East (0.001%) Project Contact , SGN - Southern England (0.001%) |
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| Industrial Collaborator | Project Contact , Wales and West Utilities (0.000%) Project Contact , Cadent Gas (0.000%) |
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| Web Site | https://smarter.energynetworks.org/projects/NIA2_SGN0044 |
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| Objectives | This initial stage of the project will be a desktop study that will collate existing information regarding types of ignition for existing natural gas operations, hydrogen installation from other industries, and academic papers. The focus will be on autoignition and static built up in pipes or from tooling and clothing, but other ignition sources may be identified. The differences between types of static will be highlighted, and terminology used will be clarified and defined to remove any confusion.During this process the supplier will provide an interpretation of the current theory within realistic parameters.Areas of concern will be highlighted, and it is expected that a number of relevant ignition types for which there are gaps in evidence will be identified. The supplier will research the mechanisms by which static and autoignition arise, and whether and how ignition could occur in real-world situations.A programme of experiments will be outlined, designed to provide sufficient evidence to fill the gaps highlighted. This is work will be carried out in stage 2 of the project and will likely be substantially different for transmission and distribution. The scope of work for Stage 1 of this project is as follows: -WP1 Literature Search & Summarise TheoryThis work pack will begin with a literature search to find and collate relevant prior material. Terminology used will be defined to ensure clarity. This will involve an overarching theoretical exploration into potential causes for unexplained or spontaneous ignition, including ignition from static and autoignition. The scope of the project will be defined, providing a set of parameters within which ignition types may occur.WP2 Autoignition desktop studyAutoignition is referred to as a possible cause of ignition of flammable gas, and hydrogen. This work pack is a more detailed investigation into autoignition. Anecdotal and recorded examples of natural as and hydrogen ignition will be explored. As many of the examples are expected to come from other industries, the possibility of this occurring within the parameters of this project will be determined. The mechanisms through which autoignition of hydrogen could occur will be investigated and presented within the context of this scope. This should be tied back to reality as much as possible. This will be approached to cover both distribution and transmission pressure bands.WP3 Static desktop study Ignition from electrostatic charge will also be explored. This work pack is split into two parts generation of static, and ignition from static. Static charge can be generated through a variety of methods, which will be explored. The main ways are expected to be through tooling, clothing, and gas flow through electrically insulated pipes. The likelihood of these happening in mains gas operations will be investigated. We will examine how factors such as material pressure, flow rate affect generation of static. We expect to investigate how much charge is generated, the energy released (which includes a time factor), and the incendivity of any spark created. This should be tied back to reality as much as possible, including consideration of realistic minimum ignition energies adjusted for factors such as concentration and gas velocity, and gas concentrations at which ignitions can occur.WP4 Map way forwardBased on the findings from WP2 and WP3, a programme of experiments will be designed. These may be intended to provide evidence supporting developedtheory, or to determine limits and likelihood of occurrences. With respect to a comparison between hydrogen and natural gas we anticipate experiments to address or demonstrate:· Autoignition possibility, and differences in how sufficient heat could be generated· Differences in potential for autoignition· Differences in static generation between the two gases· Differences in potential for ignition from staticAny recommendations or hazard mitigations discovered will be highlighted. Note that we expect that this may evolve into two different proposals of how to move forward, covering distribution and transmission pressure bands separately.WP5 PM and ReportingThis work pack covers the management of the project. Bi-weekly meeting are anticipated which will ensure the project is on course and is providing the evidence required. A final report will be provided, presenting the findings and recommendations from the project, and support will be provided to cover ENA closure form. The objectives of this study are as follows:· Fully understand the parameters for static ignition and autoignition in the context of the distribution and transmission gas networks.· Present the information in a clear and easily accessible way to highlight potential areas of concern.· Determine which ignition types are relevant and realistically possible, with an indication of hazard change from natural gas.· Outline a programme of experimental work that will provide evidence to highlight any significant increases in hazard, reassure stakeholders if risk level is minimally changed, and provide information to allow the change in risk to be objectively assessed.· Examine mitigation options as appropriate.Ensure key messages are disseminated and fully understood. | |
| Abstract | This project will aim to help the gas industry fully understand the hydrogen ignition risk from static and autoignition. Stage 1 of the project will be an initial desktop study to review the existing information regarding types of ignition for existing natural gas operations, hydrogen installations from other industries, and academic papers. The focus will be on autoignition and static built up in pipes or from tooling and clothing, but other ignition sources may be identified. Areas of concern will be highlighted and it is expected that a number of relevant ignition types for which there are gaps in evidence will be identified. The project will research the mechanisms by which static and autoignition arise, and whether and how ignition could occur in real-world situations. | |
| Data | No related datasets |
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| Projects | No related projects |
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| Publications | No related publications |
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| Added to Database | 02/10/24 | |
