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Quizzed article | REF: BE8566 V3

Hydrogen Fuel. Uses

Authors: Farida LAMARI, Patrick LANGLOIS, Pierre MALBRUNOT

Publication date: May 10, 2023

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3. Hydrogen hazards and safety

During operations involving hydrogen, an ignition or explosion would occur if the following three conditions were simultaneously met  :

  • presence of hydrogen in its flammable range ;

  • presence of oxygen in excess of the oxygen concentration limit (5% oxygen at ambient pressure and temperature);

  • ignition source (spark, electrostatic discharge, hot spot, open flame, hot surfaces, etc.) exceeding the minimum ignition energy of hydrogen (16 to 17 μJ in air).

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