At what tank level does the standby pump start in a mercury system?

In a mercury system, the standby pump is designed to activate at a 60% tank level. This operational protocol is essential to ensure that the system maintains an adequate pressure and flow rate for effective functioning. Starting the standby pump at this level helps minimize the risk of the main system pump running dry, which could potentially lead to equipment damage or operational failures.

This 60% threshold is specifically chosen based on safety considerations, allowing enough liquid to remain in the tank while providing a buffer that ensures sufficient mercury is available for operational continuity. Operating parameters like this are crucial in systems dealing with hazardous materials to maintain safety standards.