Lined tank equipped with leak detection and monitoring system

A lined tank equipped with a monitoring system comprising:

• a tank having a cavity surrounded by an air tight conductive shell;
• a liner intermediate the cavity and the shell about the volume of the shell;
• a first electrode located within the cavity of the tank;
• a first ground connected to the shell of the tank;
• a monitor connected by a first lead to the first electrode and a second lead to the ground, said monitor having a processor, said processor measuring the voltage between the first electrode and the ground and then comparing the measured voltage to a predetermined limit, and if the measured voltage exceeds the predetermined limit, activating an alarm condition;
• a power source connected to the monitor, said power source providing an electrical signal to the first electrode relative to the first ground, said processor securing from the measurement of the voltage between the first electrode and the first ground, and determining an effective resistance intermediate the electrode and the first ground, and if the effective resistance drops below a limit, activating the alarm condition;
• a second ground, and said processor determines a resistance value intermediate the first and second grounds, and if said resistance value exceeds a predetermined value, said processor triggers a fault condition, and said alarm indicator indicating a fault condition upon receipt of a fault condition signal from the monitor;
• and
• an indicator, said indicator indicating an alarm condition upon receipt of a signal from the monitor.

A monitoring system for use with lined tanks storing electrolytic fluids comprising:

• a tank having a substantially airtight cavity therein surrounded by a shell;
• a liner intermediate the shell and the cavity normally preventing fluid communication from the cavity to the shell;
• a probe extending into the cavity from an access hole in the tank and having a first electrode connected thereto;
• a first ground connected to the tank;
• a monitor having a processor therein and a first and second lead communicating with the processor;
• said monitor in electrical communication through a first lead with the first electrode, said first ground in electrical communication through a second lead with the monitor, said monitor having a processor configured to take a reading from the first and second leads and compare the reading to a predetermined limit, and if the reading passes the predetermined limit, triggering an alarm condition;
• and
• a second ground on the tank and a fourth lead in electrical communication with the second ground, said fourth lead connected to the monitor, and said processor providing a voltage across the second and fourth leads and providing a third reading, said third reading causing a fault condition if a second predetermined limit is passed, and said indicator providing indication of the fault condition.