Arpa Engineering Enterprise




An electrostatic precipitator, commonly known as ESP is basically an electrical equipment where high DC voltage is used to separate dust particles from flue gases in many industrial processes. Due to its many-fold advantages like low pressure drop, low sensitivity to high temp. & aggressive gases, high collecting efficiency well in excess of 99% and low maintenance, electrostatic precipitator has gained popularity over other dust collectors.

Major components of ESP are –

  • ESP Casing
  • Hoppers
  • Inlet & Outlet Funnels
  • Discharge Electrodes with rapping system
  • Collecting Electrodes with rapping system
  • Gas Distribution Screen with rapping system at inlet & without rapping system at outlet (if reqd.)
  • High Voltage Transformer-Rectifier Sets
  • High Voltage Insulators
  • Dust Disposal System
  • Control Panels for TR Sets
  • Auxiliary Control Panel for rapping & dust disposal system

Principle of electrostatic precipitation has four distinct phases i.e. ionization or corona generation, charging of particles, migration & precipitation of particles & removal of deposited dust.

Flue gas carrying dust particles enters the ESP casing through inlet funnel & gets homogeneously distributed throughout the ESP cross section while passing through the inlet gas distribution screen.

High negative DC voltage is imparted through emitting / discharge electrodes creating an electrical field / corona around it. Dust particles carried by the gas while passing through the electrical field is charged to saturation & electrical force causes the charged particles to migrate towards the grounded collecting electrode of opposite polarity where they are deposited as dust layer. As soon as a substantially thick layer of dust is formed, vibration of the collecting electrodes is actuated by the use of rapping mechanism using tumbling hammers, thereby dislodging the accumulated dust layer into collecting hoppers placed below ESP casing and is evacuated through the dust disposal system. Discharge electrodes are also provided with similar rapping system to dislodge small amount of dust collected on them. Ultimately treated flue gas is passed through ID fan to stack.



Electrical  Shutdown is a process that takes place in many integrated circuits, that greatly reduces power consumption when the device is not in use. Short circuits, voltage overload, and output overload all result in automatic shutdown.

 Mechanical Technicians carry out planned or unplanned maintenance and repair activities on a wide range of equipment e.g. pumps, engines, turbines.   


Typical Day/Duties:

  • Carries out maintenance and testing activities
  • Fault-finding and repair of plant, systems and equipment
  • Modifies, repairs or replaces plant, systems and equipment
  • Participates in Risk Assessments  as part of Integrated Safe System Of Work (ISSOW) / Permit to Work preparation
  • Interprets technical drawings
  • Prepares reports on work done.

How this role fits in with the rest of the industry:

This role is vital to the safe and effective delivery of offshore production/onshore processing of oil and gas or in ensuring that plant and equipment used onshore and offshore is in a safe condition and meets safety and technical standards.  They can be based offshore, at an oil and gas processing plant or at onshore yard/workshop sites.

 Mechanical Technicians carry out planned or unplanned maintenance and repair activities on a wide range of equipment e.g. pumps, engines, turbines.   


 ARPA ENGINEERING. has a separate business division to adhere the O & M service of any Air pollution system for a continued / designated tenure.



Erection, commissioning or 

installation of plant, "machinery, 

equipment or structures 


 ARPA Engineering provides after sales services to all the equipment supplied by us.