The Risk Factor is calculated by considering the Likelihood of the incident occurring and the Consequences of the possible resulting injury. For example, if something is Likely to happen and the Consequences are considered to be Moderate, then the Risk Factor is High.
| Likelihood/Consequences | Negligible | Minor | Moderate | Significant | Severe |
| Almost Certain | Moderate | High | High | Extreme | Extreme |
| Likely | Moderate | Moderate | High | High | Extreme |
| Possible | Low | Moderate | Moderate | High | Extreme |
| Unlikely | Low | Moderate | Moderate | Moderate | High |
| Rare | Low | Low | Moderate | Moderate | High |