Type of ignition sources

  • Hot surfaces
  • Flames and hot gases
  • Mechanically produced sparks
  • Electrical equipment
  • Transient currents
  • Static electricity
  • Lightning strikes
  • Electromagnetic waves
  • Optical radiation
  • Ultrasound
  • Chemical reactions
  • People (indirectly)

The Techniques of equipment protection for use in explosive atmospheres are just a matter of controlling (eliminating) possible ignition sources (secondary explosive protection).

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