What does a high-level alarm indicate in tank management?

A high-level alarm in tank management serves as a critical safety measure indicating that the liquid level in a tank has reached a point where there is a risk of overfilling. This alarm is designed to alert personnel to take immediate action to prevent spillage or potential hazards associated with an overfilled tank, such as environmental contamination or damage to the tank and associated equipment.

When the alarm is activated, it signifies that the liquid level is approaching the maximum allowable limit, which is a key operational threshold. By addressing this warning promptly, operators can intervene before the situation escalates to a dangerous condition, ensuring safe handling of the materials stored in the tank. This precaution is especially crucial in industries where hazardous materials are involved, as it helps maintain compliance with safety regulations and protects both personnel and the environment.

The other alternatives do not accurately reflect the function of a high-level alarm. While it relates to capacity management, it specifically emphasizes the risk of overflow, rather than just indicating maximum capacity or issues with securing cargo or measurement systems.