Back to Library·DG Set Operation
Engineering
Intermediate
Last updated: Jul 8, 2026
Official signed PDF · SIPL/ENI/001
The authoritative document as issued. View or download below.
Open PDF Download
Chrome blocks embedding this signed PDF inline for security. Open it in a new tab to read, or download a copy.
Open PDF in new tab Download

DG Set Operation

PURPOSE

  • 1.1 To define a procedure for operation of DG Set.

SCOPE

  • 2.1 This SOP applies to Utility section of Engineering department.

REFERENCE(S) & ATTACHMENTS

  • 3.1 References

    • 3.1.1 In-house

  • 3.2 Attachments

    • 3.2.1 Attachment- I : DG Set Log Sheet SIPL/ENI/001/F01/00

    • 3.2.2 Attachment- II : PM Check List SIPL/ENI/001/F02/00

RESPONSIBILITY

  • 4.1 Engineering Department Person:

    • 4.1.1 To prepare the SOP.

    • 4.1.2 To prepare a list of the SOP in Engineering Department.

  • 4.2 Engineering Head:

    • 4.2.1 To ensure the training of the SOP to all concerned personnel involved in implementation of the SOP.

    • 4.2.2 To ensure the implementation of the SOP after training.

  • 4.3 Quality Assurance Person:

    • 4.3.1 To check the SOP.

    • 4.3.2 To maintain the original copy of the SOP.

    • 4.3.3 To issue controlled copy of the SOP.

    • 4.3.4 To maintain issuance record of SOP.

    • 4.3.5 To retrieve the controlled copy of the SOP when it is superseded/obsolete and maintain its record.

  • 4.4 QA Head:

    • 4.4.1 To approve new or revised SOP.

    • 4.4.2 To ensure the implementation of the defined system.

  • 4.5 Plant Head:

    • 4.5.1 To approve new or revised SOP.

    • 4.5.2 To ensure the implementation of the defined system.

DISTRIBUTION

  • 5.1 Quality Control

  • 5.2 Production

  • 5.3 Engineering

DEFINITION(S) & ABBREVIATION(S)

  • 6.1 Definitions

    • 6.1.1 DG Set: Diesel Generator Set produces electrical power by consuming diesel. It works as alternate power back-up of the plant.

  • 6.2 Abbreviations

    • 6.2.1 B/C: Bus Coupler

    • 6.2.2 ACB: Air Circuit Breaker

    • 6.2.3 SOPs: Standard Operating Procedures

    • 6.2.4 M/C: Machine

    • 6.2.5 Amp: Ampere

PROCEDURE

  • 7.1 Pre-Start Checking:

    • 7.1.1 Clean the outer surfaces of the DG Set using cotton cloth.

    • 7.1.2 Check the fuel (diesel) level using stick having a minimum marking level. It should be above the minimum level.

    • 7.1.3 Check the coolant water level. It should be visible from the top of the radiator.

    • 7.1.4 In the DG electrical panel, select the key to 'Run' mode. Check the battery voltage in the DG electrical panel. The value should show minimum 22 volt DC.

  • 7.2 Start-up Procedure:

    • 7.2.1 In the DG electrical panel, select the key to 'Run' mode.

    • 7.2.2 In the Power Control Centre area, go to the DG Breaker panel. Select the switch to Auto mode.

    • 7.2.3 In the Power Control Centre area, go to the B/C Breaker panel. Select the switch to DG-2.

    • 7.2.4 In the Power Control Centre area, go to the DG Breaker panel. Pull the lever of the breaker on by moving it from right to left side.

    • 7.2.5 Similarly, switch on the B/C Breaker.

  • 7.3 Checks While Running:

    • 7.3.1 Check the voltage in the display located in the DG electrical panel. LL (Line to Line) voltage should not be less than 220 volts.

    • 7.3.2 Keep checking the fuel level every half an hour. The level should not be below the minimum level.

    • 7.3.3 Every half an hour, keep checking the temperature in the temperature display located at the DG electrical panel. It should not be more than 80 °C.

    • 7.3.4 Every half an hour, keep checking the oil pressure in the display located at the DG electrical panel. It should not be less than

  • 2.5 kg/cm².

    • 7.3.5 Every half an hour, keep checking the load (Amp) in the display located at the DG electrical panel. It should not be more than as per machine

  • 7.4 Closing of DG Set:

    • 7.4.1 In the Power Control Centre area, first switch off the breaker of B/C by pressing the 'Trip' push button.

    • 7.4.2 In the Power Control Centre area, switch off the breaker of DG-2 by pressing the 'Trip' push button.

    • 7.4.3 Wait for ten minutes for the DG Set to cool off.

    • 7.4.4 In the Power Control Centre area, go to the DG Breaker panel. Select the switch to Manual mode.

    • 7.4.5 In the DG electrical panel, select the key to 'Off' mode.

REVISION HISTORY

+----------------+----------------+----------------+----------------+----------------+----------------+ | Revision No. | 00 | Effective | | CC No. | | | | | Date | | | | +----------------+----------------+----------------+----------------+----------------+----------------+ | Details of revision: New SOP | +-----------------------------------------------------------------------------------------------------+

Have questions?
Ask our AI Trainer — it can explain this SOP.
Ask AI Trainer →