Australia Model Code of Practice: How to Manage Work Health and Safety Risks 3.2a: 3.2 Work out how each hazard could cause harm as a chain of events

Incidents usually come from a chain of events in which one or more links fail, so stopping or changing one link can eliminate or reduce the risk. One method is to find the starting point where things go wrong and ask what could happen next. Consider how effective existing controls are against every type of harm, how work is really done rather than what manuals say, infrequent or abnormal situations, and harm during maintenance, cleaning, breakdowns and failure of controls. Appendix C shows the method.