Caution is advisable on sealed ramps if several containers are opened at the same, so releasing carbon dioxide. The TLV (threshold limit value) for CO2 concentration is 0.49 vol.%. Testing for the atmospheric content of carbon dioxide, oxygen and many other gases is carried out using detection equipment (multi-gas detector, see TIS).
Although in container transport the risk of an accident due to a build-up of carbon dioxide or reduction in oxygen content is minimized due to opening of the container doors, attention should still be drawn to this risk as such an accident could occur in enclosed storage areas.
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