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Terminal Automation > Major subsystems of a typical TAS

The major subsystems of a typical terminal automation system include the gantry automation subsystem, tank farm management subsystem, control room subsystem, and entry-exit subsystem.

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Gantry Automation Subsystem


The Gantry Automation subsystem forms the heart of the Terminal Automation system, required to transfer and control the flow of the product. Its various components include:

Batch Controller

(SmartLoad DL-6000 : earlier known as Danload® DL-6000)


The SmartLoad accurately dispenses batches of products/blends of up to 4 components by volume or mass and controls up to 6 additives. It updates Smart Terminal Manager with the progress of the load and alarms.


The SmartLoad can be configured for in-line proportional or in-line non-proportional or sequential blending using turbine meter, control valve etc.

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Flow Metering Subsystem


Consists of Positive Displacement or Turbine Meters or Coriolis Meters for Volumetric and /or Mass Measurement, Set/Stop Control Valve (diaphragm/ piston/pneumatic type), Strainer, Air Eliminator/ Degasser and Safety Valve.

Additive Injection Subsystem


The combination of Additive Block and SmartLoad ensures that the correct amount of additive is dispensed, eliminating need for Smart Injection Systems.

Safety Interlock Subsystem


Earth, Overspill and Arm Position detectors are connected to the Preset to ensure safe loading.

ID Reader


ID reader (Proximity type/Touch type) can be interfaced directly to SmartLoad providing security in the local operating mode.

Local Control Panel


An Ex-proof panel consisting of indicator lights and push buttons at each loading point provides a simplified driver interface.

Tank Farm Management Subsystem


This subsystem manages the product stored in large tanks before distribution, and constantly monitors the product level per tank, as well as other important information like density and temperature. Components include tank gauges, temperature sensors, tank side indicators, water bottom interface, inlet and outlet motor operated valves, communication interface units and tank farm software.

Control Room Subsystem


This subsystem is used to control and monitor the operation of the entire Terminal Automation System. It includes redundant supervisory computers, operator-interface computers (OIC), printers, networking components, programmable logic controllers, uninterruptible power supplies, panels and cubicles and related systems. The STM software is installed on the supervisory computers as well as OICs.

Access Control Subsystem


This subsystem is responsible for controlling vehicle entry and exit at the facility. The various components include barrier gates, card readers, traffic lights, vehicle sensors, a security station, and other related accessories.