STANDARD OPERATING PROCEDURE
Form No.: EHSMSM/__/___ Form Rev. No.: __ Effective date: 31/11/2023
SOP No. TSK/QMS/CRM/EM/CAL/SOP/50 Effective Date 31/11/2023 REVISION No 00
SOP DESC LT motor Maintenance Section CAL
DEPARTMENT CRM TSK Page 1 of 6
1.0 Purpose : This SOP defines the steps involved in the process of LT motor Maintenance
2.0 Scope : This SOP is applicable for the process of SOP for LT motor Maintenance
3.0 Reference : NEW
4.0 Definition : LT motor Maintenance
5.0 Annexure : NA
6.0 Distribution : IEM Electrical
O P
S
Note.: SOP may be revised at any point of time suiting circumstances and without compromising the safety of the working environment. Revised SOP will be
d
circulated as and when changed and required
a l i
V
O P
PREPARED BY
Name and Designation: Shyamsundar Mondal
CHECKED BY
Name and Designation: Amit Kumar (Sr. Manager)
APPROVED BY
d S
Name and Designation: Sourabh Basu (Head
/JE
Signature with Date:31/11/2023 Signature with Date:
a l i
Elentrical Maint CRM)
Signature with Date:
Printed By -NEHA KUMARI(702766) Print valid till - 10-Feb-2025
V
Printed on - 31-Jan-2025 SOP Valid Till - 22-Oct-2025
STANDARD OPERATING PROCEDURE
Form No.: EHSMSM/__/___ Form Rev. No.: __ Effective date: 31/11/2023
SOP No. TSK/QMS/CRM/EM/CAL/SOP/50 Effective Date 31/11/2023 REVISION No 00
SOP DESC LT motor Maintenance Section CAL
DEPARTMENT CRM TSK Page 2 of 6
PPE & TOOLS REQUIREMENT: -
List Of PPE
Safety Gumboot Safety Flash Proof Insulated Ear Plug Dust Mask Visor Torch
Helmet Goggles Jacket Gloves
Required
O P × × ×
1.
2.
Power tester
Discharge Rod
S
List of Tools
3.
4.
5.
Megger
Multimeter
ATP
l i d
6.
7.
winding resistance kit
Blower
V a
O P
PREPARED BY
Name and Designation: Shyamsundar Mondal
CHECKED BY
Name and Designation: Amit Kumar (Sr. Manager)
APPROVED BY
d S
Name and Designation: Sourabh Basu (Head
/JE
Signature with Date:31/11/2023 Signature with Date:
a l i
Elentrical Maint CRM)
Signature with Date:
Printed By -NEHA KUMARI(702766) Print valid till - 10-Feb-2025 Printed on - 31-Jan-2025
V SOP Valid Till - 22-Oct-2025
STANDARD OPERATING PROCEDURE
Form No.: EHSMSM/__/___ Form Rev. No.: __ Effective date: 31/11/2023
SOP No. TSK/QMS/CRM/EM/CAL/SOP/50 Effective Date 31/11/2023 REVISION No 00
SOP DESC LT motor Maintenance Section CAL
DEPARTMENT CRM TSK Page 3 of 6
Sl. No. Associated Hazards Mitigation Measures
1 6 DIRECTIONAL HAZARDS Directional hazards should be mentioned in work permit.
2 ELECTRICAL HAZARD Electrical energy source isolation must be done.
3 ENVIRONMENTAL HAZARDS Adequate light must be available in the specified area.
4 QUALITY OF TOOLS Use of Proper tools/ insulated tools should be ensured.
Existi Probability
Residual Resid Resi
Activity Conseq P/A/C ng Consequ of Ris
Recomm Probabilit ual dua Risk
(Routine Hazardou uence /E safeg ences Occurrenc k
Job Hazard Cause endation y of Conse l Owne
or Non s Event uard e
(OFIs) Occurrenc quenc Ris r
Routine (Impac
e es k
t)
1 Routine Electric Shock
Electrocuti
on Shock Burn P
O P
Yes High Low High
Discharge
Before Job Low High Low JE-IEM
d S Start
l i
NOTE:- Once the “Hazard Identification and Risk Assessment” is available in below format, it should be attached instead of above table
a
What (Activity)
Where (Location)
When (Frequency)
Maintenance
CAL
Yearly
V
Why (Reason) PBM
Who (Responsibility) IEM- JE
How (Procedure) As mentioned below
O P
PREPARED BY
Name and Designation: Shyamsundar Mondal
CHECKED BY
Name and Designation: Amit Kumar (Sr. Manager)
APPROVED BY
d S
Name and Designation: Sourabh Basu (Head
/JE
Signature with Date:31/11/2023 Signature with Date:
a l i
Elentrical Maint CRM)
Signature with Date:
Printed By -NEHA KUMARI(702766) Print valid till - 10-Feb-2025 Printed on - 31-Jan-2025
V SOP Valid Till - 22-Oct-2025
STANDARD OPERATING PROCEDURE
Form No.: EHSMSM/__/___ Form Rev. No.: __ Effective date: 31/11/2023
SOP No. TSK/QMS/CRM/EM/CAL/SOP/50 Effective Date 31/11/2023 REVISION No 00
SOP DESC LT motor Maintenance Section CAL
DEPARTMENT CRM TSK Page 4 of 6
Sl. No. What Requirements/Hazards/Impact Who Operating steps References
Requirements before start of Job:
Ensure all safety equipment to be i)Conduct toolbox talk to educate the workers regarding the job
used. hazards and use of PPE's.
Pre-requisition
Associated Hazards: - ii)Identification of hazards around the working area and
1. for the IEM-JE
SAFETY: ESI & SOP collection discuss with all working team and take care of them. Arrange
Job/Safety
ENVIRONMENT: N/A appropriate tools.
Induction
QUALITY: N/A iii)If new person joined the group conduct toolbox talk.
Impact:- N/A
Requirements before start of Job: i) Take the Work permit approval & power cutting clearance in
Take General clearance before form as per ESI.
starting the job ii)Put OFF the LT breaker.
2.
General
Clearance &
Power cutting of
Associated Hazards: -
SAFETY: Proper PI to be provided
ENVIRONMENT: N/A
IEM-JE
O P iii)In addition to work permit take proper power clearance
from concerned person.
iv) Barricade the motor area where job is to be performed.
Feeder. QUALITY: Ensure proper approval
from Operation team authority
d S v)Check the power cable with power tester
vi)De-energize all parts capable of storing energy prior to
maintenance
a l i
Requirements before start of Job: -
Use proper tools & tackles at the time
iv)Ensure Load end mechanical isolation.
i)Clean the motor using blower. Clean air ducts for proper
ventilation, Clean fan chamber and coupling.
3.
Inspection and
cleaning
of working.
V
Associated Hazards: -
SAFETY-: Electrocution.
ENVIRONMENT: N/A
IEM-JE
ii)Open the terminal box, check terminal marking on cable and
motor busbar check with power tester and discharge using
discharge rod, then do the blowing
iii)If unclean, clean with Cotton cloth. Cable box must be
QUALITY: Proper Cleaning required. cleaned.
Impact: - Hazard due to the above iv)Check the permanent terminal marking on R , Y & B phase
safety. cables & motor terminations to avoid phase mismatch during
reconnection.
O P
PREPARED BY
Name and Designation: Shyamsundar Mondal
CHECKED BY
Name and Designation: Amit Kumar (Sr. Manager)
APPROVED BY
d S
Name and Designation: Sourabh Basu (Head
/JE
Signature with Date:31/11/2023 Signature with Date:
a l i
Elentrical Maint CRM)
Signature with Date:
Printed By -NEHA KUMARI(702766) Print valid till - 10-Feb-2025
V
Printed on - 31-Jan-2025 SOP Valid Till - 22-Oct-2025
STANDARD OPERATING PROCEDURE
Form No.: EHSMSM/__/___ Form Rev. No.: __ Effective date: 31/11/2023
SOP No. TSK/QMS/CRM/EM/CAL/SOP/50 Effective Date 31/11/2023 REVISION No 00
SOP DESC LT motor Maintenance Section CAL
DEPARTMENT CRM TSK Page 5 of 6
Requirements before start of Job: - i)Check cable Termination. If found loose, check tightness with
Associated Hazards: - proper spanner or tools.
SAFETY: Electrocution. ii)During tightness checking if any lugs found damaged re-lug
ENVIRONMENT: NA the cable and put the insulation tape.
QUALITY-: Ensure optimum iii)Check all motor earthing tightness.
Maintenance & tightness of connections to avoid iv)Stator Winding - IR should be done at 500 V for 30 seconds
5. Testing of Motor electrical failures Impact: - Hazard IEM-JE using Megger.
& Cable due to the above safety. v)WDG Resistance and Inductance measure by Micro-Ohm
meter.
vi)See all the connections made during testing must be
removed otherwise, while energizing the motor, fault may
occur.
vii)IR value of the power cable.
Requirements before start of Job: -
Associated Hazards: -
SAFETY: Electrocution.
O P i)Check the tightness of Power cable and Control cable.
ii)Control TB checking, MCCB outgoing terminals checking &
cable IR value checking (If applicable)
6.
Maintenance in
JB
ENVIRONMENT: NA
QUALITY-: Ensure optimum
d S IEM-JE
i
tightness of connections to avoid
l
electrical failures Impact: - Hazard
a
due to the above safety.
7.
Greasing during
V
Requirements before start of Job: -
Associated Hazards: -
SAFETY: Electrocution.
ENVIRONMENT: NA
IEM-JE
i)Allow the motor to operate for approximately 30 to 40
minutes.
ii)Check bearing temperature of the bearing if greasing
required then do the greasing during trial run.
Trial Run QUALITY-: optimum quantity of iii)Wipe grease from the grease relief plug. This prevents
grease to be applied. foreign objects from entering the grease cavity.
Impact: - Excess Grease may cause iv)Add grease as per OEM standard.
more temperature rise.
P
v)Bearing temperature should be monitored during greasing.
O
PREPARED BY
Name and Designation: Shyamsundar Mondal
CHECKED BY
Name and Designation: Amit Kumar (Sr. Manager)
APPROVED BY
d S
Name and Designation: Sourabh Basu (Head
/JE
Signature with Date:31/11/2023 Signature with Date:
a l i
Elentrical Maint CRM)
Signature with Date:
Printed By -NEHA KUMARI(702766) Print valid till - 10-Feb-2025
V
Printed on - 31-Jan-2025 SOP Valid Till - 22-Oct-2025
STANDARD OPERATING PROCEDURE
Form No.: EHSMSM/__/___ Form Rev. No.: __ Effective date: 31/11/2023
SOP No. TSK/QMS/CRM/EM/CAL/SOP/50 Effective Date 31/11/2023 REVISION No 00
SOP DESC LT motor Maintenance Section CAL
DEPARTMENT CRM TSK Page 6 of 6
Requirements before start of Job: - i) Check all the opened terminal and box that must be properly
Associated Hazards: - closed. Seal the motor TB completely with the help of
SAFETY: Electrocution. Aluminum tape or suitable substitute.
Closing of
ENVIRONMENT: NA ii)Return Work permit & Get Power getting clearance from
General Permit &
8. QUALITY-: Ensure optimum IEM-JE Operation team.
Power cutting
tightness of connections to avoid iii)Ensure Power availability with PI Lock removal
form return
electrical failures iv)Power ON the feeder & take a trail of motor from HMI
Impact: - Hazard due to the above
safety.
Contingency Plan
Trouble
O P Action Responsibility
1. After maintenance feeder may in open condition.
2. Flash over due to short circuit (if bus bar shutter not open)
d S 1.
2.
Check the door of control circuit and take trial from HMI.
Ensure there is no Tool left inside the motor & cable chamber. M-JE
IE
a l i
V
O P
PREPARED BY
Name and Designation: Shyamsundar Mondal
CHECKED BY
Name and Designation: Amit Kumar (Sr. Manager)
APPROVED BY
d S
Name and Designation: Sourabh Basu (Head
/JE
Signature with Date:31/11/2023 Signature with Date:
a l i
Elentrical Maint CRM)
Signature with Date:
Printed By -NEHA KUMARI(702766) Print valid till - 10-Feb-2025
V
Printed on - 31-Jan-2025 SOP Valid Till - 22-Oct-2025
