Regulations regarding environmental testing have focused attention on the need for verification of containment sump integrity. Specifically, the focus is on the containment sumps used in fuel distribution sites.


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The PLC-5000 Full Shutdown System monitors and detects leaks in closed piping systems. Specifically, it is designed to meet Environmental Protection Agency (EPA) guidelines for gasoline station monitoring.

The ISM 4080/4081 Integrated Shutdown Module ensures line pressure by periodically starting the submersible pump (turbine) to repressurize the line. In addition, the line is monitored for leaks, and alarms cause shutdown of the delivery system.

The STM-4201 Staged Turbine Module has been designed both to accommodate the special requirements of multi-turbine applications and to operate with VMI’s ISM-4080/4081 family of Integrated Shutdown Modules.

When fuel is not being transferred, the pressure in the underground piping system of a gasoline station may fall due to thermal contraction of the fuel within the line.The ARM-4073 Automatic Repressure Module ensures line pressure by periodically starting the submersible pump (turbine) to repressurize the line.

The AST-4010 / 4012 Aboveground Storage Tank (AST) Controller facilitates the transfer of fuel from a delivery truck to a single storage tank. This is accomplished through control of the site-mounted transfer pump. The fuel level in the AST is monitored to prevent overfilling of the tank.

The Flow Data Logger is an in-line flow monitor specifically designed to record flow rates at one-minute intervals. Installation in the process line is uncomplicated and easily tailored to a variety of applications.