ESS (European Spallation Source) is a neutron source facility for the study of materials at molecular and atomic levels. The facility design and construction include a linear proton accelerator built in a tunnel 3-4 meters below the ground. ESS will extract protons from hydrogen gas stored under pressure in a storage bottle with the help of an electromagnetic field for the accelerator.
Due to hydrogen’s flammability properties, the Swedish Rescue Services requires ESS to assess the extent of a potential accidental hydrogen release inside the accelerator tunnel. The extent of the flammable cloud from the hydrogen release needs to be fully understood so that ESS can identify ATEX zones and implement the necessary preventive and mitigative measures to comply with area classification and personnel safety regulations.
What you will learn
In this case study, you will learn:
- Realistic geometry modelling of installations has significant influences on the accuracy and reliability of the results
- How confinement and ventilation can influence the gas dispersion process
- Realistic modelling of hydrogen gas dispersion improves the understanding of risk and gives better decision support for the cost-effective implementation of preventive and mitigative measures in the facility
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