The Five Steps to Risk Assessment is sometimes carried out by using knowledge from research about the risk in general and knowledge about what is the best prevention.

The first step is to identify the hazards and the next step is to find out who can be harmed. To make the risk assessment for these two steps it is relevant to search for relevant knowledge from research to tell about the risk in number and severity from similar operations.  To find effective prevention measures, is also needed to search for knowledge from experience and from research. The prevention is implemented in step 4 and evaluated in step 5. If the evaluation show there is no or too little effect of the prevention measure we need to correct and do the same process once more.