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MR- GREEN Transport – Hydrogen safety – physical properties

      • Hydrogen’s physical property of buoyancy means that, if not confined, it will disperse into the atmosphere. So ventilation is the primary safety measure to prevent accumulation to a flammable level.
      • It’s very lean flammability limit and low energy density means that there is little contained energy in a flammable mixture.
      • It’s low radiated heat means that consequential damage from a flame is smaller than damage created by the flame of other gases.
      • There are already mature standards used throughout the world for hydrogen.
      • For the automotive sector, the EC79/2009 standard governs application of hydrogen as a fuel to road vehicles.
      • The ADR regulations cover carriage of dangerous goods including compressed and flammable gas like hydrogen.