Select here to view this work scenario. We’re going to apply HIRAC to the trenching worksite, beginning again with hazard identification. ‘Dial Before You Dig’ plans have been received and no underground services have been identified.

This time, you’ll go through the process without the Risk Assessment Matrix and Hierarchy of Controls tables visible. You’ll still have the scores and descriptors available.

Looking at the site, which hazards can you identify? Select the three correct answers.]]>

]]> Personnel are working in trenches greater than 1.5 metres, putting them at risk of engulfment in a ground collapse

]]> Contact with overhead power cables

]]> Pedestrians (workers and public) are at risk of falling into the trench

]]> Excess excavated material, when stockpiled at the trench’s edge, can collapse into it

]]> Correct.

]]> Incorrect.

]]> Failed.

]]> Not quite. There are no power cables visible. Also note that these are all just some of the hazards associated with this task. Additional hazards may be identified, and must be addressed in any SWMS for the task.

]]> That’s right. All of these things can be hazards in this worksite; however, there are no power cables visible. Also note that these are all just some of the hazards associated with this task. Additional hazards may be identified, and must be addressed in any SWMS for the task.

]]>