Crunch the Numbers
To more precisely determine the risk of a job, you may want to quantify it with a numerical value or score.
Quantifying risk helps justify why you have prioritized jobs based on the risk of injury or illness.
Using the two tables on the right, you can develop "risk scores" to indicate the degree of risk in each job.
For example, a job in which exposure to a danger zone is likely to result in an injury or illness would receive a Probability Score of "6" in the table to the right.
In this case, a job in which exposure might result in a lost time injury to one worker would receive a Severity Score of "50".
Multiplying the Probability Score (6) by the Severity Score (50) in the example to the right would result in a Risk Score of 300.
If more than one employee is exposed while performing the task, you would multiply the Risk Score by the number of employees. In this case, let's say two employees are working together on the job. Both are equally exposed. Using the formula below, the total Risk Score would by doubled to 600.
Risk = Probability (6) x Severity (50) x Exposure (2) = 600
You might consider any job with a risk score of 200 or higher to be a high risk and, therefore, the Risk Score in this example indicates conducting a JHA on this job should be a top priority.
Knowledge Check Choose the best answer for the question.
1-9. How can quantifying the risk of a job be beneficial in the JHA?
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