What steps must be taken if the level of risk is deemed unacceptable?

When the level of risk is considered unacceptable, immediate and proactive measures are needed to ensure the safety and well-being of individuals involved. The appropriate steps include evacuating to safety, reducing risk, and stopping the usage of harmful substances.

Evacuating to safety is crucial as it protects individuals from imminent harm. If a risk factor poses a threat, prioritizing the safety of all personnel must be the first response. Following evacuation, reducing risk involves implementing strategies to eliminate or mitigate the factors contributing to the unacceptable level of risk. This can include stopping the usage of harmful substances that could lead to dangerous situations or accidents.

Taking these extensive actions not only addresses the immediate threat but also helps to establish a safer environment moving forward. It emphasizes the importance of responsiveness in risk management and lays the groundwork for implementing longer-term changes that prevent the recurrence of such risks. The other options may involve beneficial practices but do not directly address the urgent need to ensure safety and mitigate immediate threats.