SOP for Preventive maintenance of Boiler Scrubber EN-31

The objective of this Standard Operating Procedure preventive maintenance of Boiler Scrubber is to outline the steps and guidelines for conducting preventive maintenance on a boiler scrubber to ensure its optimal performance, compliance with environmental regulations, and safe operation.

SOP for Preventive Maintenance of Boiler Scrubber

• OBJECTIVE:
  • To lay down the procedure for preventive maintenance of Boiler Scrubber installed in utility area.
• SCOPE:
  • This SOP is applicable to preventive maintenance of Boiler Scrubber installed in utility area.
• RESPONSIBILITY:
  • Technician/ Operator / Engineer shall be responsible for proper execution of preventive maintenance as per SOP.
  • Engineering – Head shall be responsible for reviewing the SOP and for ensuring proper execution of preventive maintenance of Boiler Scrubber.
• ACCOUNTABILITY:
  • Engineering – Head shall be accountable for proper implementation of the SOP.
• DEFINITIONS:
  • Nil
• PROCEDURE:
  • Preventive maintenance shall be executed as per the SOP No.: SOP/EN/XXXYYY – Execution of preventive maintenance of Boiler Scrubber.
  • Ensure that the spare parts are available at the time of preventive maintenance of Boiler Scrubber.
• Preventive maintenance of Boiler Scrubber – Mechanical
• Clean strainers in water circulation pump
  • Switch off the water circulation pump.
  • Close the isolation valve of pump.
  • Open the flanges of strainer, remove the mesh; clean and replace if required.
  • Put the mesh inside the strainer, tight the nut and bolts of flanges.
  • Open the valve.
  • Cleaning frequency of strainer shall be after every month ± 5 days.
  • Check the operation of damper valve
  • Check and clean the flue gas duct damper valve; it should be easily closed and opened.
  • If the closing and opening movement is not properly, then open the damper valve.
  • Check for the gasket; if found damaged, cut, deform size and shape change then replace the gasket.
  • The checking of damper valve shall be after every three months ± 7 days.
• Lubrication of motor bearings
  • Lubricate the pump and blower motor bearings with recommended lubricating grease.
  • The lubrication shall be done after every three months.
• Check and clean the sprinkler nozzle
  • Check and clean the water sprinkler nozzle for proper water distribution.
  • Check the nozzles for tight connections and any leakages if required tighten the same.
  • Check and clean the flow strainer.
  • Check and inspect the flow pattern, so as there will not be weeping in the packed column.
  • Checking of nozzles shall be done after every six month ± 15 days.
• Check of duct work
  • Check and clean the flue gas duct.
  • Check the end connection of flue gas duct; if required tightens the same.
  • Check and inspect the duct for any damage and deterioration.
  • Check the chimney for erosion and plugging.
  • Checking shall be done after every six month ± 15 days.
• Checking and cleaning of the packed column
  • Check and inspect the any leakage; check for the tightness of end connections if required tight the same.
  • Check the gasket for damaged; cutting, deformation, leaching if required replace the same.
  • Clean the packing media, thoroughly cleaning with water.
  • Check the condition of media rings; inspect the packing for damage and settling if required replace the same.
  • Check the water re-circulation tank for sediment deposition; if required wash thoroughly form inside and flush out the dust.
  • Check the support strength and fasteners, if required tight the same.
  • Checking shall be done once in a year ± 30 days.
  • Check the nozzles for tight connections and any leakages if required tighten the same.
  • Check and clean the flow strainer.
• Preventive maintenance of Boiler Scrubber – Electrical
• Checking of Terminals and Wiring
  • Ensure that the power supply to the machine is switched off.
  • Visually check all the power and control wiring and terminals in the electric panel and on the field instruments.
  • Check and ensure by using screwdriver that all the wires are properly tightened.
  • Checking shall be done monthly ± 5 days.
• Checking of motor
  • Physically check the insulation resistance of motor winding with the help of meagger.
  • Check the phase continuity and winding continuity of motor with the help of tong tester.
  • Physically check the motor terminal box and terminal connections.
  • Check the voltage drawn by motor with the help of multimeter.
  • Check the current drawn by motor with the help of tong tester.
  • Physically check the direction of rotation; it should be as per recommended direction.
  • Checking shall be done after every six month ± 15 days.
• Checking of Contactors
  • Switch off the main switch on the electrical panel.
  • Remove all wires from the contactor.
  • Remove the contactor from the panel and visually check all the contacts for pitting and carbon deposits on the contacts.
  • Remove the dust from control panel with help of air blower.
  • Clean all the contacts with carbon tetra chloride (CTC) or with contactor cleaner.
  • Replace the contacts if found damaged or welded.
  • Put back the contactor in the panel and connect the wires in their respective panels.
  • Check the earthing of the panel body.
  • A good earthing shall show less than 2 Volts between the Neutral Wire of the Incoming Power supply and Panel Body.
  • Checking of contactors shall be done after every six month ± 15 days.
• Post Preventive maintenance of Boiler Scrubber – Check List
  • Record the Preventive Maintenance details as per the Format No.: SOP/EN/XXXYYY“Preventive Maintenance Checklist & Record for Boiler Scrubber”.
  • Whenever any modifications and major works are carried out to the equipment, the same shall be mentioned in the equipment history card as per the respective SOP.
  • Connect the equipment main power supply and start the equipment.
  • Ensure that the equipment is running smoothly, without any abnormality.
  • If any abnormality is observed in the above, same will be attended in co-ordination with User department Head.

• ABBREVIATIONS:
  • CRF No.   :     Change Request Form number
  • QA            :     Quality Assurance
  • EN           :      Engineering
• REFERENCES:
  • Execution of Preventive Maintenance                                       :    SOP/EN/XXXYYY
• DISTRIBUTION LIST:
  • SOP shall be distributed to following departments Quality Assurance, Engineering as per user request.
• ANNEXURES
  • Preventive Maintenance Record for Boiler Scrubber System            :           SOP/EN/XXXYYY
•  

Check List and Records for the Preventive Maintenance of Boiler Scrubber

You may also read about Good Laboratory Practices (GLP)