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Impaired mental and physical ability caused by alert/notification to respond

Hazard Knowledge

When a person receives notification to respond to an emergency incident they may experience a range of emotions and subsequent physical reactions. These reactions may impair their cognitive appraisal of the situation and so increase the likelihood of making errors of judgement. This temporary physical and mental impairment can increase the likelihood of accidents occurring.

HSG48 states that to evaluate the risks from the hazards it is important to decide if the risks vary due to human influences. For example, there is a higher likelihood of human error between 02:00 and 05:00 when physiology dictates that the human body should be asleep. The risks will also be influenced by how well trained people are, whether they have had sufficient rest before starting a shift, and whether they have taken alcohol or used drugs.