Which of the following is NOT included in emergency preparation for confined space entry?

In the context of emergency preparation for confined space entry, it is vital to ensure that all equipment and protocols are geared toward safety and efficiency. The option regarding training the observer to remove a worker is not typically included as part of emergency preparation protocols.

The primary focus in confined space entry preparation includes having reliable communication methods, appropriate evacuation points, ensuring adequate air supply, and other safety mechanisms. The role of the observer is generally to monitor the situation, provide real-time updates, and alert emergency services if required, rather than physically extracting a worker themselves. This will often fall under the responsibilities of trained rescue personnel who have specific training in rescue techniques and the hazards of confined spaces.

In contrast, the other options are essential components of a solid emergency preparation plan. An aerosol emergency horn serves as an effective alerting device, while having a unit evacuation and assembly point ensures that workers can quickly and safely evacuate to a predetermined location. Adequate fresh air breathing equipment is crucial to ensure the safety and health of workers within the confined space, providing necessary oxygen and protecting against hazardous atmospheres.

Thus, while the role of the observer is important, actively training them to perform rescue operations deviates from the principles of proper emergency protocols in confined spaces.