Standard Operation Procedure Dc Motor - Power Plant

STANDARD OPERATION PROCEDURE FOR 

ELECTRICAL DEPARTMENT–CPP

DC Motors Operation 

1. Objective.................................................................................................. 
   
   
2. Scope........................................................................................................ 
   
   
3. Responsibility .........................................................................................
   
   
4. Input ........................................................................................................
   
   
5. Output .....................................................................................................
   
   
6. Process ....................................................................................................
   
   
7. Process Performance Parameter and Process Control Parameter............
   
   
8. Related Documents..................................................................................
   
   
9. Safety Precautions ...................................................................................
   
   
10. Environmental Precautions:.....................................................................

1.0 Purpose:
The purpose of operation procedure is to maximize the performance of equipment by ensuring that the equipment performs regularly and efficiently, by attempting to prevent the breakdowns or failures and minimizing the losses resulting from breakdowns or failures while starting the equipment.

2.0 Scope:
This SOP is applicable for standard Operation for the DC Motor.

3.0 Responsibility:
HOD Electrical Maintenance

4.0 Input
 Related Standard operation procedure.

5.0 Output:

•   Restored Equipment
  
•   Updated Log Book
  
•   Maintain the records
• 
  6.0 Process:
  

  Sr.No		Activity	Responsible
  1		Organize PEPTALK before assigning the job	Engineer
  2		Check the motor Bed Bolt tightness and Coupling freeness by hand.	Engineer
  3		Ensure power supply is off.	Electrician
  4		Check the armature and field resistance if the motor with Multimeter.	Electrician
  5		Check the brush holder tightness and also check the brush sitting clearance.	Engineer
  6		Clean the Commutator & carbon brushes.	Electrician
  7		Segments also check the pressure on brushes.	Electrician
  8		Techno coupling, connections, mounting checking.	Electrician
  9		Check the megger value of the motor power cable.	Electrician
  10		Check the Cooling fan tightness or Cooling air blower motor available check the termination and megger value of the blower motor.	Electrician
  11		Check the motor termination, cable gland seating area and also tightness of the terminal block.	Electrician
  12		Switch on the SFU/Breaker.	Electrician
  13		Take clearance from Turbine Engineer / shift in charge	Engineer/ Shift in charge
  14		Start the motor from locally and check the speed variation is correct timing as per the drawing.	Electrician / Shift in charge
  15		Check the pressure of the pump discharge at full rpm of the motor and stop the motor .	Electrician / Shift in charge
  16		Keep the motor in DCS with Auto mode for safety purpose and check once from Remote / DCS also	Electrician / Shift in charge
  17		Clean the work place & equipment’s after completed the job.	Engineer/ Shift in charge

  
  

  7.0 Process Performance Parameter and Process Control Parameter
  

  •   % deviation from Target Mean Time Taken to Repair
    
  •   Adherence to Equipment Checklist and running parameter of the motor (Current, Voltage, Bearing temperature and Vibration) should be, maintain in the records.Cost of Spares used or Replaced

  Check for Megger values with in specified limits. Check trip circuit healthiness for DC Motor.
  Check for starting and running loads during trial run. Check for any excessive heat generation in motor.

  
  

  8.0 Related Documents:

  
  

  Sr. No				Reference No. of Record	Location of record	Retention Time
  		Title of Record
  1	Electrical logbook				Shift office
  2	Equipment history card				Electrical HOD
  3	Equipment details of the control desk.				Electrical HOD

  
  

  
  

  9.0 Safety Precautions

  
  

  	Sr. No		Activity			Responsibility
  1			Ensure Proper range of the Multimeter and Megger			Engineer
  2			Insulated general tools to be used.			Electrician
  3			Ensure good housekeeping of maintenance site.			Electrician
  4				Chance of Getting the Personal Injury		Electrician
  5				Chance of Damaging the Equipments		Electrician
  6				Follow the work instruction properly as given by the shift engineer or any higher authority		Electrician
  7				Every person is aware of the first aid procedure.		Electrician
  8				Class one permit should be taken from Safety department		Electrician

     
  

  10.0 Environmental Precautions
   NIL  NIL