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You will find powerpoints from the presentations under "Documents" after the webinar.

Na Liu
Researcher at UiB

Risks of sulfate-reducing bacteria in underground hydrogen storage: microbial consumption, bioclogging, and wettability changes.

Underground hydrogen storage (UHS) in subsurface reservoirs, such as saline aquifers and depleted hydrocarbon reservoirs, presents a promising and cost-effective solution for large-scale energy storage. However, hydrogen also serves as an electron donor for subsurface microorganisms, particularly sulfate-reducing bacteria (SRB), which can trigger several risks. These include hydrogen loss, gas composition changes, Hâ‚‚S formation affecting safety and quality, biocorrosion of technical equipment, and reservoir property alterations due to biofilm formation and mineral precipitation. This talk will explore these microbial-induced challenges and their implications for UHS operations.

As part of the EU-fundedÌýproject , this research will supplement the SSO field data through the inclusion of bio-geochemical sampling of natural hydrogen seeps and accumulations. This talk will explore how microbial communities that naturally thrive in hydrogen-rich environments interact with geological formations over time, highlighting the microbial-induced challenges of UHS and their implications for storage integrity, operational efficiency, and risk mitigation strategies.

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Farhana Yasmine Tuhi
PhD candidate at NTNU

Technical failures in green hydrogen production and reliability engineering responses: Insights from database analysis and a literature review

Green hydrogen represents a promising solution for renewable energy application and carbon footprint reduction. However, its production through renewable energy powered water electrolysis is hindered by significant cost, arising from repair, maintenance, and economic losses due to unexpected downtimes. Although reliability engineering is highly effective in addressing such issues, there is limited research on its application in the hydrogen field.

To present the state-of-the-art research, this study aims to explore the potential of reducing these events through reliability engineering, a widely adopted approach in various industries. For this purpose, it examines past accidents occurred in water electrolysis plants from the hydrogen incident and accident database (HIAD 2.1). Besides, a literature review is performed to analyze the state-of-the-art application of reliability engineering techniques, such as failure analysis, reliability assessment, and reliability-centered maintenance, in the hydrogen sector and similar industries. The study highlights the contributions and potentials of reliability engineering for efficient and stable green hydrogen production, while also discussing the gaps in applying this approach. The unique challenges posed by hydrogen’s physical properties and innovative technologies in water electrolysis plants necessitate advancement and specialized approaches for reliability engineering.

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Microsoft TeamsÌý

Meeting ID: 332 877 506 102
Passcode: dC6tE3Jk

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