Which subcategory of Mishap Probability is assigned to events likely to occur immediately?

The subcategory of Mishap Probability that is assigned to events likely to occur immediately is the highest level of probability, which is categorized as 'A.' This designation indicates a high likelihood of occurrence in a very short time frame, suggesting that the event is almost certain to happen unless preventive measures are taken.

Understanding the implications of this classification is crucial for risk management and safety planning, as it drives the urgency in implementing mitigation strategies to avoid potential hazards. The 'A' category emphasizes that immediate action may be necessary to address situations that are deemed highly probable, focusing resources and attention where they are needed most to prevent adverse outcomes.