What must be done to prepare for a confined space entry?

Preparing for a confined space entry is a multifaceted process that includes essential safety measures to mitigate risks associated with working in such environments. Choosing "All of the above" reflects a comprehensive approach to ensuring safety and successfully managing potential hazards.

Assessing atmospheric conditions is crucial because confined spaces can have dangerous levels of oxygen deficiency, toxic gases, or flammable vapors. Conducting a thorough atmospheric assessment helps identify whether the space is safe for entry and what protective measures must be in place.

Ensuring clear communication among team members involved in the entry is vital for coordinating activities and responding quickly in case of an emergency. Effective communication can prevent misunderstandings and ensure that everyone is aware of the current situation and any changes that occur during the operation.

Establishing rescue procedures is another critical component of preparation. This ensures that there are specific plans and trained personnel ready to act swiftly in the event of an incident, such as a worker becoming unconscious or trapped inside the confined space.

By recognizing that all these elements are essential parts of confined space entry preparation, it becomes evident why selecting "All of the above" represents the most thorough and safe approach to preparing for such work.