At each worksite, potential dropped object hazards must be identified.
Tools, equipment, structures, lights, suspended loads, temporary or portable appliances and any pre-existing loose items will always be a threat. Effective task planning and risk assessment will reduce the consequences and eliminate exposure to personnel.
Barriers are functions and measures designed to break a specified undesirable chain of events. In other words, their function is to prevent a hazard, such as a dropped object, from manifesting itself or to mitigate the consequences by breaking an undesirable chain of events.