Basic HSE information about H2S Hydrogen sulfide and set of tools to be used at work.

H2S - Hydrogen sulfide

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  1. You must be familiar with the hazards of H2S.
  2. Know what the exposure limit is for H2S.
  3. Know what to do in case of an H2S alarm or exposure.
  4. Ask your company about wearing protection and H2S detection.
  5. Use the correct PPE.


Hydrogen sulfide (H2S) is a colorless gas with with a distinctive foul odor of rotten eggs. It causes a wide range of health effects. Workers are primarily exposed to hydrogen sulfide by breathing it. The effects depend on how much hydrogen sulfide you inhale and the exposure period. Exposure to very high concentrations can quickly lead to death. Maximum caution and care is required!


Hydrogen sulfide is extremely poisonous, corrosive, and flammable. It inhibits the absorption of oxygen. It is very harmful to your health and the environment.



  • you must have permission from your HSE Manager to enter a hydrogen sulfide location
  • you must be familiar with the hazards of H2S
  • ask your company for their policies and procedures about wearing protection and H2S detection
  • ask your company for their exposure limit relating to H2S


Use the correct Personal Protection Equipment (PPE). Ask your company about this.



  • immediately stop all work, leave your workplace and report to your HSE Manager
  • ask your company for the specific rules about what to do and the wearing of protection
  • go to an assembly point located upwind
  • plant at sea: go to an assembly point according to instructions
  • leave the workplace directly at right angles to the wind direction


  • plant on land: immediately notify the person responsible for first aid in your company and call an ambulance
  • plant at sea: immediately notify the person responsible for first aid in your company and call the medic
  • do not attempt any rescue actions; ask your company about what to do

Start your daily work with safety!

Onscreen presentation is very useful to use during work preparation or toolbox meetings. It provides short and concrete information. Five questions and answers at the end of presentation can be used to make the meeting more interactive and to give conversation a boost.

Be always prepared for the work!

It is of utmost importance to be well prepared before you start the work.
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