In a suspended personnel platform without boom motion controls, who must communicate with the operator according to ASME B30.23?

In the context of a suspended personnel platform without boom motion controls, the role of the signalperson is crucial for ensuring safety and effective communication between the operator and the personnel on the platform. According to ASME B30.23 standards, the signalperson is specifically trained and qualified to give clear signals that the operator can understand, which is essential when there aren't any boom motion controls.

The signalperson is responsible for evaluating the situation and directing the operator based on the ongoing activities around the platform. This includes providing timely and accurate signals to manage the movement of the suspended personnel platform and addressing any potential hazards that might arise during the operation. The training and expertise of the signalperson in this scenario are key to maintaining safety and ensuring that lifting operations proceed smoothly.

While other roles, such as a spotter or site foreman, may have important responsibilities, they do not directly engage in the communication processes required for maneuvering the platform in this specific situation. The designated person typically refers to someone with overall responsibility for the task but does not necessarily interact in real-time during the operation as a signalperson does. Thus, the signalperson's specific training and role make them the correct choice for this scenario.