PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY
Gas detection. Two firefighters using a portable multi-gas detector to determine if there is a gas leak. A gas can be flammable, toxic and/or an asphyxiant, and can only be treated appropriately once it has been identified. The firefighters are wearing breathing apparatus and protective clothing. The detector can identify which gas is present by analysing gas concentrations present in the atmosphere.
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