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OV E rV I E W O F T H E S A F E T Y M O D E L

One way to implement this safety model is to conduct a job hazard analysis (JHA). This involves development of a chart: 1) Column 1, breaking down the job into its separate task or steps; 2) Column 2, evaluating the hazard(s) of each task, and 3) Column 3, developing a control for each hazard. See the example below.

JHA: Changing a Wall Ground Fault Circuit I

nterrupter (GFCI)

Task analysis

Hazard analysis

Hazard abatement

Removing the cover

Electric shock from exposed

live wires

De-energize by opening circuit breaker or removing fuse

Removing old GFCI

Possible other live wires in opening

Test wires with appropriate voltmeter to ensure all wires are de-energized

Installing new GFCI

Possible connecting wires incorrectly

Check wiring diagrams to ensure proper connections

Replace cover and re-energize

Possible defective GFCI

Test GFCI

Use the safety model to recognize, evaluate, and control workplace hazards like those in this picture.

Page 20

Section 4

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