3 Occasional (monthly) 2 Limited (few times each year) 1 No significant exposure Step 6: Determine the probability of loss or how likely things may go wrong when a task is performed (e.g. with line locating, although it is done often, minor incidents may happen rarely, therefore may be assigned a ‘2’). 4 Likely to be expected 3 Occurs but not expected 2 Known to happen 1 Remotely possible Step 7: Calculate the likelihood that the loss will occur using the following table – frequency of exposure multiplied by the possibility of loss (e.g. for line locating the likelihood that a loss would occur is ‘8’). 4 4 8 12 16 3 3 6 9 12 2 2 4 6 8 1 1 2 3 4 Probability of Loss 1 2 3 4 Frequency of Exposure Step 8: Determine how severe the loss would be based on predictions of the type and source of loss (e.g. for line locating, you might expect a minor injury, so you would assign a ‘2’). Severity Health Safety Environmental Impact Financial Loss Public Impact Category 6 One or more Catastrophic – Major environmental Extensive Serious impact fatalities external impact to neighboring damage & - large disaster receptors (public extended community response streams, vegetation, air, downtime ground water) (corporate) 5 Serious injury – Serious threat Off-site release or Major Serious impact permanent – internal repeated downtime – small disability, disaster issues with (Division/Area) community response potential for significant occupational adverse impact illness 4 Serious injury – Significant Contained within the Minor Minor – disabling threat – facility – large impact or damages or families
3 Occasional (monthly) 2 Limited (few times each year) 1 No significant exposure Step 6: Determine the probability of loss or how likely things may go wrong when a task is performed (e.g. with line locating, although it is done often, minor incidents may happen rarely, therefore may be assigned a ‘2’). 4 Likely to be expected 3 Occurs but not expected 2 Known to happen 1 Remotely possible Step 7: Calculate the likelihood that the loss will occur using the following table – frequency of exposure multiplied by the possibility of loss (e.g. for line locating the likelihood that a loss would occur is ‘8’). 4 4 8 12 16 3 3 6 9 12 2 2 4 6 8 1 1 2 3 4 Probability of Loss 1 2 3 4 Frequency of Exposure Step 8: Determine how severe the loss would be based on predictions of the type and source of loss (e.g. for line locating, you might expect a minor injury, so you would assign a ‘2’). Severity Category Health Safety Environmental Impact Financial Loss Public Impact 6 One or more fatalities Catastrophic – external disaster response Major environmental impact to neighboring receptors (public streams, vegetation, air, ground water) Extensive damage & extended downtime (corporate) Serious impact - large community 5 Serious injury – permanent disability, occupational illness Serious threat – internal disaster response Off-site release or repeated issues with potential for significant adverse impact Major downtime (Division/Area) Serious impact – small community 4 Serious injury – disabling Significant threat – Contained within the facility – large impact or Minor damages or Minor – families
0002Section2HazardIDandAssessmentdocx.docx