Risk Matrix | |||||
Likelihood | |||||
Descriptor | Level | Definition | |||
Rare | Level 1 | The event may occur only in exceptional circumstances | |||
Unlikely | Level 2 | The event may occur at sometime, say once in 10 years | |||
Possible | Level 3 | The event should occur at sometime, say once in 3 years | |||
Likely | Level 4 | The event will probably occur in most circumstances, say once a year | |||
Almost Certain | Level 5 | The event is expected to occur in most circumstances | |||
Consequence | |||||
Descriptor | Level | Definition | |||
Insignificant | Level 1 | No Injury | |||
Minor | Level 2 | Injury/ill health requiring first aid | |||
Moderate | Level 3 | Injury/ill health requiring medical attention | |||
Major | Level 4 | Injury/ill health requiring hospital admission | |||
Severe | Level 5 | Fatality | |||
Risk Matrix | |||||
Likelihood | Consequence | ||||
Minor | Moderate | Major | Severe | ||
HIGH | HIGH | EXTREME | EXTREME | EXTREME | |
Likely | MEDIUM | HIGH | HIGH | EXTREME | EXTREME |
Possible | LOW | MEDIUM | HIGH | EXTREME | EXTREME |
Unlikely | LOW | LOW | MEDIUM | HIGH | EXTREME |
Rare | LOW | LOW | MEDIUM | HIGH | HIGH |
Key | |||||
Extreme: | Notify Workplace Manager and/or Management OHS Nominee immediately. Stop Action/task/process immediately. Corrective actions should be taken immediately. | ||||
High: | Notify Workplace Manager and/or Management OHS Nominee immediately. Corrective actions should be taken within 48 hours of notification | ||||
Medium: | Notify Nominated employee, HSR / OHS Committee. Nominated employee, OHS Representative / OHS Committee is to follow up that corrective action is taken within 7 days. | ||||
Low: | Notify Nominated employee, HSR / OHS Committee. Nominated employee, HSR / OHS Committee is to follow up that corrective action is taken within a reasonable time. | ||||
Risk Controls | |||||
Elimination | Completely remove the hazard e.g. removal of hazardous substance from the workplace. | ||||
Substitution | Change a work practice, substance or piece of equipment to provide a safer environment e.g. substitute old office chairs to ergonomic chairs to reduce the risk of ergonomic injuries. | ||||
Engineering | Modify the design of the workplace or plant and/or environmental conditions e.g. the use of a fume extraction system to remove fumes generated by hazardous substance use in labs. | ||||
Administrative | Developing procedures and systems to control the interaction between people and hazards e.g. reducing the amount of time of exposure to noise by requiring people to be remote from equipment during operation, providing manual handling training to persons so they are better able to identify/report/control/avoid hazards in the workplace. | ||||
Personal Protective Equipment (PPE) | Implementing PPE to prevent physical contact between a person and a hazard e.g. Correct footwear, gloves etc. | ||||
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Risk Matrix
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