JSA and a (Qualitative) Risk Assessment (QRA) are different hazard and risk management tools. When you're doing a JSA, you are not, in fact, performing a risk assessment, which is a completely separate tool in risk management tool box.
In a JSA, the work team goes through a fairly simple analysis by breaking a job down into task-steps and then running through a six-step process to identify the following information: 1) the hazards in each step; 2) the triggers that could release the hazards; 3) the incidents that could occur in each step should the hazard be uncontrollably released; 4) the potential consequences of an uncontrolled hazard; 5) the prevention controls to be used to control the hazard; and 6) the mitigation and recovery controls to be used to manage any emergency and recover control over the hazard. I call the above process "Think 6, Look 6" to describe what workers need to do to complete a JSA!
In QRA, a team assesses the risk (likelihood) of any given incident (identified in step 3 above) occurring, that results in a given consequence (in step 4 above), and taking account of the controls being used (identified in steps 5 + 6). This assessment provides what we call the "residual" risk - the risk "left-over" once our controls are in place. The "raw" or inherent risk is assessed by simply not factoring in the use of controls.
Taken from: LinkedIn Group Discussion by the courtesy of Zahid
Zahid B.
EHS Head - Construction Vertical ( UAE, KSA, Qatar)
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