30 minutes


By the end of the session the trainee should be able to:

  • understand the use of scales for severity and likelihood to rate the risk

  • evaluate whether the risk is adequately controlled.

Risk Rating

Explore rating of severity and likelihood

Explain that the factors of severity and likelihood of harm from a hazard can be placed on a scale against numbers or words. Below are two examples from different sources. Use these as an illustration of scales which can be used for severity and likelihood, or use the scales from the risk-rating system which you use in your own company.

Scales from Croner-i



10 (Multiple death)

10 (Certain)

8 (Single death)

8 (Very likely)

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