At what level does the high-level alarm actuate on a cone roof with a floating pan?

The high-level alarm on a cone roof with a floating pan is designed to activate just before reaching the high-level shutoff level. This configuration serves as a critical safety mechanism to prevent overfilling of the tank.

By triggering the alarm prior to the shutoff point, operators are given an early warning, allowing them to take corrective actions to manage the tank's contents effectively. This proactive approach helps to prevent potential spills or overflows, which could lead to environmental hazards or safety incidents.

In industrial settings, alarms play a vital role in monitoring and controlling operations. The timing of the high-level alarm is strategically set to provide a buffer, ensuring there is sufficient time for personnel to respond appropriately to avoid any adverse outcomes. This concept reflects standard safety practices in fluid management systems, reinforcing the importance of timely alerts in maintaining operational safety and integrity.