Final answer:
The hazard probability category that identifies hazards likely to occur immediately or within a short period of time is the high probability category.
Step-by-step explanation:
The hazard probability category that identifies hazards that are likely to occur immediately or within a short period of time is high probability category.
This category includes hazards such as a fire alarm indicating a serious fire or potential for extreme physical danger. These hazards are considered more likely to happen soon and require immediate attention and action.
For example, in the National Fire Protection Agency (NFPA) hazard diamond, a red diamond indicates a hazard in the high probability category, such as flammable materials that can cause an immediate fire or explosion.
The hazard probability category that identifies hazards which are likely to occur immediately or within a short period of time is typically referred to as 'imminent' or 'high probability'. This category applies to situations where there is a high likelihood of danger or impact in the near future, such as potential for a serious fire after an alarm is triggered. This categorization can be seen in systems like the National Fire Protection Agency (NFPA) hazard diamond, which communicates the major hazards of a chemical substance including the immediate danger it poses.