Which type of system requires automatic supervision of detection devices?

In fire protection systems, the deluge system requires automatic supervision of detection devices to ensure that all components are functioning correctly before water is released. This system operates by opening all discharge nozzles simultaneously upon activation of the detection devices, which typically consist of heat or smoke detectors.

The need for automatic supervision is crucial because the deluge system does not allow for water to be stored in the pipes until an event occurs; it instead relies on the activation of the detection systems to flood an area with water when fire is detected. Therefore, any failure in the detection devices can lead to ineffective fire suppression, making the supervision essential for system integrity and reliability.

In contrast, other systems like dry pipe or wet pipe do not have the same immediate demand for simultaneous activation across all discharge points, nor do they pose the same level of risk if a detection device fails, which emphasizes why the deluge system stands out in needing supervision of its detection devices.