What is a major safety consideration when operating an aerial device on an apparatus?

The major safety consideration when operating an aerial device on an apparatus is avoiding power lines. This is crucial because power lines pose a significant risk of electrocution if an aerial device comes into contact with them. The high voltage in power lines can lead to fatal accidents for operators and individuals in the vicinity. Furthermore, even being in close proximity to power lines when maneuvering aerial devices can create hazardous situations, so it's important for operators to be aware of their surroundings and maintain a safe distance from these lines.

In addition to this, incapacitating power lines can also disrupt emergency operations, potentially delaying crucial response efforts. Therefore, ensuring that aerial devices are operated safely away from power lines is a fundamental aspect of safety training and operations for health and safety officers. This understanding underscores the importance of vigilance and thorough risk assessment when working with aerial devices in any environment.