The tables below provide guidance for ranking risk factors and determining the risk level.

Ranking risk factors by likelihood
 Ranking risk factors by consequence
Very Likely
Expected to occur in most circumstancesFatality
May cause death and/or severe irreversable disability, and/or permanent ill health
Likely
Will probably occur in most circumstancesMajor
Severe injury or illness
Possible
Might occur occasionallyMinor
Minor (usually reversible) injury or illness resulting in days off work
Unlikely
Could happen at some timeFirst Aid
First aid level medical treatment
Highly Unlikely
May happen only in exceptional circumstancesNegligible
No treatment required

Consequence
Likelihood
Very likely
Likely
Possible
Unlikely
Highly unlikely
Fatality
Extreme
High
High
High
Medium
Major injury
High
High  
High  
Medium
Medium
Minor injury  
High
Medium
Medium
Medium
Medium
First aid  
Medium
Medium
Medium
Low Low
Negligible
Medium
Medium
Low
Low
Low

Control Hierarchy
Elimination
Remove hazard
Substitution
Use a less hazardous alternative
Isolation Restrict access, use in a closed container
EngineeringEg: Plant guards
Administration
Eg:Training, Safe Work Procedure
PPEC - Personal Protective Equipment & Clothing Eg: Gloves, respirator, safety glasses

Prioritising Hazards

Risk Level

Priority 

 Action

Timeframe for implementation of corrective action

Extreme

1

The activity should cease immediately and short term safety controls implemented.
Notify manager and assess activity.
A hazardous activity rated as extreme must not be undertaken until safety controls have been implemented, and reviewed and approved by the relevant Executive Dean, Deputy Vice-Chancellor, Pro-Vice-Chancellor, Vice-President or the Vice-Chancellor.

Immediate
High

2

Implement short term safety measures immediately.
Notify manager and assess activity.
A hazardous activity rated as high must not be undertaken until safety controls have been implemented, and reviewed and approved by the relevant Dean of School/Divisional Head.

Within 24 hours
Medium

3

Implement short term safety controls.
Notify manager and assess activity.
Within 14 days
Low 

Implement long term safety controls.
Notify manager and assess activity. 
Within 28 days (if possible) or
demonstrate that it is not reasonably
practicable to achieve further
minimization of the risk

See Hazard Management Policy for further details.