When fire pumps are required to be monitored, what type of signal shall be considered supervisory signals?

Supervisory signals are designed to indicate the operational status of fire protection systems, including fire pumps. In the context of fire pumps, signals that provide information about system readiness and potential issues are crucial for maintaining safety and effectiveness.

The correct choice indicates that any signal that alerts personnel to a supervisory condition—meaning a state that warrants attention but does not indicate an active fire condition—is classified as a supervisory signal. This includes signals related to various operational aspects of the fire pump, such as maintenance needs or system integrity, which do not directly indicate that the pump is running or that there is an active water flow event.

In contrast, other options describe specific operational scenarios rather than supervisory conditions. For instance, a pump running signal is indicative of the pump being active, while a water flow alarm signals an incident requiring immediate action. A pressure gauge signal can provide useful information about the system's performance but may not cover the range of supervisory conditions reflected in broader monitoring requirements.