What is Emergency Shutdown System (ESD) ?

What is Emergency Shutdown System (ESD) ?

Because of the threat presented to the compressor station, human life, or physical damage to the equipment, a quick shutdown of the gas turbine and compressor is essential. Delayed shutdown options are not acceptable.

The Emergency Shutdown System (ESD) is intended to reduce the severity of emergency scenarios such as uncontrolled floods, hydrocarbon escape, or fire outbreaks in hydrocarbon-carrying areas or other potentially hazardous places.

Emergency Shutdown System (ESD)


An emergency shutdown (ESD) valve and its related valve actuator are part of a process control system’s emergency shutdown system. In the case of a process control system failure, an emergency shutdown (ESD) controller sends output signals to the ESD valve.

The ESD controller activates a solenoid valve, which causes the actuator to fail. The ESD valve is tested using a digital valve controller (DVC). An impedance booster device allows the solenoid valve and DVC to be powered by dc over a two-wire line while still allowing digital communication over the same two-wire line.


Risk evaluations have traditionally found that the Emergency Shutdown system requires a high Safety Integrity Level, usually SIL 2 or 3.

The system is made up of field-mounted sensors, valves, and trip relays, as well as system logic for signal processing, alarm, and HMI units.

The system may process input signals and activate outputs in line with the installation’s Cause and Effect charts.

Typical Actions from an Emergency Shutdown System

  • Parts of systems and equipment are turned off.
    Hydrocarbon stockpiles should be kept separate.
    Electrical equipment should be isolated.
  • Stop the situation from getting out of hand.
  • halt the flow of hydrocarbons
  • Blowdown / Depressurize
  • Ventilation control in an emergency
  • Close all waterproof and fireproof doors.
  • For both safety and process requirements, centralized project development is required.

You can handle your process control and functional safety demands with a common control platform because the ESD System is designed on the same control platform as the Process Automation System. Both process control and functional safety applications can be developed using a single Control System.

To aid in the verification and validation of the safety plan, static analysis tools are offered. Esoteric can deliver solutions for Process, Discrete, and Functional Safety applications using a single platform and software workbench, minimizing the need for spares, training, and maintenance while saving money.

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