Gujarat Fluorochemicals DCS Panel Operator Interview Questions and Answers for Experienced

DCS operation in a chemical plant involves monitoring and controlling various processes through a centralized control system.

• DCS stands for Distributed Control System

• Operators use DCS to monitor and control processes such as temperature, pressure, flow rates, and levels

• DCS helps in optimizing plant operations, improving efficiency, and ensuring safety

• Examples of DCS systems used in chemical plants include Honeywell Exp

Endpoints communicate with DCS through protocols like OPC, Modbus, Ethernet/IP, etc.

• Endpoints send data to DCS using communication protocols like OPC (OLE for Process Control), Modbus, Ethernet/IP, etc.

• DCS receives data from endpoints and sends control commands back using the same communication protocols.

• Endpoints can be sensors, actuators, PLCs, HMIs, etc., connected to the DCS network.

• Communication can be wired or wi

The heat rate of a turbine is a measure of its efficiency in converting fuel into electricity. It is calculated by dividing the total energy input by the electricity output.

• Heat rate is calculated by dividing the total energy input (in BTUs) by the electricity output (in kWh).

• Normal parameters for DCS boiler/turbine include temperature, pressure, flow rates, and efficiency.

• Condenser capacity is the amount of heat that ...read more

Safety instruments in reactors include pressure relief valves, temperature sensors, level indicators, and emergency shutdown systems.

• Pressure relief valves are used to release excess pressure in the reactor to prevent explosions.

• Temperature sensors monitor the temperature inside the reactor to ensure it stays within safe limits.

• Level indicators help operators maintain the correct level of coolant or other substances in...read more

The working temperature of the Boiler DCS Operator is 400±5 °C and the working pressure is 45 kg/cm2.

• The Boiler DCS Operator is responsible for monitoring and controlling the temperature and pressure of the boiler.

• They need to ensure that the temperature is maintained within the range of 400±5 °C.

• They also need to ensure that the pressure is maintained at 45 kg/cm2.

• Any deviations from the specified temperature and pres...read more

Work Rely in PLC panel is a device that monitors the status of a machine and sends signals to the PLC to control its operation.

• Work Rely is used to detect the presence or absence of voltage or current in a circuit

• It is used to control the operation of motors, pumps, and other machines

• It can be used to monitor the status of safety devices such as emergency stop buttons and safety gates

• Examples of work rely include proxi...read more

Motherboard in a PLC panel acts as the central hub for all the components to communicate and work together.

• Motherboard provides power and connectivity to all the components in the panel

• It houses the processor and memory chips that control the PLC operations

• It also has input/output modules that receive and send signals to the external devices

• Examples of motherboards used in PLC panels are Siemens SIMATIC S7-1200 and All