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Inherently, petrochemical plants are home to a host of hazardous, combustible gases which present significant risks during production. It is paramount that all plant practices, warnings, and emergency procedures are observed at all times.

At any point a large and complex amount of gases, which lead to atmospheric contamination hazards, will be present. With gases such as nitrogen and sulphur present at any time, workers are exposed to the risks of explosion, corrosiveness and asphyxiation. Combined and in a potential enclosed space, these gases pose much more of a threat than they would individually.


  1. Confined Space Entry
  2. Chemical Production
  3. Shutdown and Turnaround
  4. Valve and Flange Checkpoints

Common gas hazards include:

  1. Ammonia (NH3)
  2. Carbon Dioxide (CO2)
  3. Carbon Monoxide (CO)
  4. Chlorine (Cl2)
  5. Combustible Gases
  6. Hydrogen (H2)
  7. Hydrogen Chloride (HCl)
  8. Hydrogen Sulphide (H2S)
  9. O2 (Enrichment/Deficient)
  10. Sulphur Dioxide (SO2)
  11. Volatile Organic Compounds (VOC).

Chemical plants manufacture a vast number of products and feedstocks. The diversity of chemicals used on site during manufacturing processes provides danger to plant and personnel in the form of toxic and flammable gases.