This document provides information about Chittaranjan Locomotive Works (CLW) in India. It discusses the history and establishment of CLW, some key milestones and locomotives produced. It also describes the quality policy, environmental policy and different types of locomotives produced at CLW, including their specifications. Finally, it lists some of the shops visited during a training program at CLW.

1. A PRESENTATION ON
CHITTARANJAN LOCOMOTIVE WORKS
PRESENTED BY : -
NAME : - ANKAN DEY
BRANCH : - MECHANICAL
INSTITUTE ROLL NO : - 131961028
UNIVERSITY ROLL NO – 27300713010
NSHM KNOWLEDGE CAMPUS , DURGAPUR

2. ACKNOWLEDGMENT
MR. SUBRATA GHOSH, Principal, TTC/CLW/CHITTARANJAN
MR. NAG, VOCATIONAL TRAINING INCHARGE,
TTC/CLW/CHITTARANJAN
ALL SENIOR SECTION ENGINEERS, JUNIOR ENGINEERS, SUPERVISORS
AND EMPLOYEES OF CLW CHITTARANJAN

3. ABOUT CHITTARANJAN LOCOMOTIVES WORKS
FIRST LOCOMOTIVE BUILDING WORKSHOP IN INDIA
PREMIER PRODUCTION UNIT OF INDIAN RAILWAYS
PRODUCTION INAGURATED ON 26TH JANUARY 1950 BY SMT. BASANTI DEVI, W/O OF GREAT PATRIOT
DESHBANDHU CHITTARANJAN DAS.
ABOUT CHITTARANJAN LOCOMOTIVES WORKS

4. • 26TH JANUARY 1950 - PRODUCTION INAGURATED BY SMT. BASANTI DEVI, W/O OF GREAT PATRIOT DESHBANDHU
CHITTARANJAN DAS.
SOME SPECIAL MOMENTS
• 14TH OCTOBER 1961 – FIRST CLW BUILT WCM-5 ELECTRIC LOCO “LOCKMANYA”
• 16TH NOVEMBER 1963 – FIRST CLW BUILT WAG-1 25KV AC ELECTRIC LOCO “BIDHAN”
• 1968 – FIRST CLW BUILT DIESEL HYDRAULIC LOCOMOTIVES “INDRAPRASTHA”
• 1971 – LAST STEAM ENGINE PRODUCED “ANTIM SITARA”
• 1992 –FIRST 5000HP HIGH ADHESION WAG-7 ELECTRIC LOCOMOTIVE “SHANTIDAN” PRODUCED
• 1980 – FIRST RAJDHANI ELECTRIC LOCO WAP-1 PRODUCED
• 1994 – WAP-1 ELETRIC LOCO “PRAGATISHEEL” PROVIDED WITH HITHACHI TRACTION MOTOR
• 1996 – ISO-9001 & 9002 CERTIFIED
• 1998 – FIRST 3ɸ 6000HP WAG-9 LOCOMOTIVE “NAVYUG” INAGURATED BY HONARABLE MINISTRY OF INDIAN
RAILWAYS SHRI NITISH KUMAR
• 1994 – FIRST 5000HP WAP-4 PASSENGER TRAIN “ASHOK” FAGGED OFF
• 2000 – “NAVKIRAN” FIRST WAP-7 LOCO ROLLED OUT
• 2000 – “NOVODIT” FIRST WAP-5 LOCO ROLLED OUT
• 2000 – “NAVASAKTI” FIRST WAG-9H LOCO ROLLED OUT

5. • 2002 – ISO-14001 CERTIFICATION AWARDED TO CLW
• 2003 – ISO-9001-2000 CERTIFICATION AWARDED TO CLW
• 2006 – CLW IS CONFERRED WITH THE GOLDEN PEACOCK AWARD FOR ENVIRONMENT MANAGEMENT BY THE
WOLD ENVIRONMENT FOUNDATION
• 2006 – CLW AWARDED WITH SAFETY INNOVATION AWARD 2006 BY THE INSTITUTE OF ENGINEERS
• 2008 – CLW WEBSITE LAUNCHED
• 2008 – CLW ADOPTED ORACLE BASED FINANCIAL APPLICATION
• 28TH JANUARY 2009 STEPS INTO DIAMOND JUBILEE YEAR

6. Quality Policy Of Chittaranjan Locomotive Works
CLW has well-established Quality System.
The quality policy adopted by CLW are as follows : -
• To meet customer’s need by establishing a quality
management system and reviewing the quality policy and
quality objective for continual improvement.
• Quality Policy is communicated and understood by all in the
organisation and reviewed periodically.
• Ensure quality of purchase material by establishing an
effective system of vendor product performance.
• Constantly reviewing and updating design specification and
progress to improve product performance.
• Having an effective system of communication, proper training and motivate to every
employee of CLW to implement and maintain the quality policy

7. Environmental Policy Of Chittaranjan Locomotive Works
• Waste generated in Shops have been reduced by 5% from the
previous year by improvement of operational procedures.
• Air Pollution Control Device has been installed in Integrated Paint
Shop to reduce air pollution.
• ·Dust collector has been installed in Sand Plant/SF for reduction of
air pollution.
• To reduce air pollution, stack height of D. G. sets in Central Power
House has been increased.
• Air Pollution Control Device has been installed at GEC Arc Furnaces in Steel Foundry.
• Consumption of water in plant area has been reduced by 5% by arresting major leakages and
provision of water meters have been made for regular monitoring of water consumption.
• Consumption of electricity in plant and Township has been reduced by use of energy efficient lights,
installation of capacitor bank etc.

8. • 50,000 trees have been planted in the CLW Township. Another 50,000 trees will be planted during the
current year.
• Use of polybags has been totally banned inside the Township.
• New Sewage Treatment Plant (Bio-filter Plant) has been commissioned and under operation for
improvement of effluent quality before discharge to surface inland and nearby water bodies.

9. LOCOMOTIVE ENGINE NOMENCLATURE
W - Broad Gauge
(1.676 m)
Y - Meter Gauge
(1m )
Z – Narrow Gauge
(2’6’’)
N – Narrow Gauge
(2’)
1, 2, 3,4…….
Denotes
Model No
M – Mixed Traffic
G – Goods
P – Passenger
S – Shunting
L – Light Duty
R – Rail Car
Alphabets like
E, H etc.
Denotes
rectified locos.
A – AC Power
(25KV)
C – DC Power
(1500V)
D – Diesel Loco
CA – AC/DC
Traction
Locos except older steam ones have classification codes that identified them. The code is as follows : -
[Gauge] [Power] [Load] [Series] [Suffix]

10. EXAMPLE
[W] [A] [P] [4] [E]
WAP 4E
W Means Broad Gauge
i.e. the track width is 1.676m
A Means this is AC powered loco
P Stands for Passenger Train
4 Stands for Model No
E Stands for Rectified loco

11. DIFFERENY TYPES OF ENGINES PRODUCED BY CLW
1. WAG-9
2. WAP-7
3. WAP-5
4. WAP-4
5.WAG-7
3 Phase Drive
Single Phase/ DC Drive

12. 01. WAG-9
Salient Details :-
Track Gauge - 1676mm
Total HP - 6000
Starting Tractive effort - 460KN (47t)
Max. Service Speed - 100 KMPH
Breaking - Air, Regenerative & Parking
Wheel Arrangement - Co-Co
System Voltage - 25KV AC, 50 Hz
Weight of loco - 123t 1%
Type Of Bogie - Fabricated
Wheel Dia. - 1092mm
No Of Traction Motor & Type - 6 No Type-FRA 6068
Total Width Of Locomotive – 3130mm
Minimum Radius Curve Negotiable - 174m

13. 02.WAP-7 Salient Details :-
Track Gauge - 1676mm
Total HP - 6000
Starting Tractive effort - 460KN (47t)
Max. Speed - 140 KMPH
Breaking – Air Regenerative & Parking
Wheel Arrangement - Co-Co
System Voltage - 25KV AC, 50 Hz.
Weight of loco -123t 1%
Type Of Bogie - Fabricated
Wheel Dia. - 1092mm
No Of Traction Motor & Type - 6 No Type-FRA 6068
Total Width Of Locomotive – 3130mm
Minimum Radius Curve Negotiable - 174m

14. 03. WAP-5 Salient Details :-
Track Gauge - 1676mm
Total HP - 5450
Starting Tractive effort - 258KN
Max. Service Speed - 160 KMPH
Breaking - Air, Regenerative & Parking
Wheel Arrangement - Bo-Bo
System Voltage - 25KV AC, 50 Hz
Weight of loco - 78t 1%
Type Of Bogie - Fabricated
Wheel Dia. - 1092mm
No Of Traction Motor & Type - 4 No & Type-
FXA 7059
Total Width Of Locomotive – 3130mm
Minimum Radius Curve Negotiable - 174m

15. 04. WAP-4
Salient Details :-
Track Gauge - 1676mm
Total HP - 5000
Starting Tractive effort - 294KN (30t)
Max. Service Speed - 140 KMPH
Breaking – Air & Hand Brake
Wheel Arrangement - Co-Co
System Voltage - 25KV AC, 50 Hz
Weight of loco – 112.8t 1%
Type Of Bogie - Casting
Wheel Dia. - 1092mm
No Of Traction Motor & Type - 6 No Type- HS-15250 AH
Total Width Of Locomotive – 3050mm
Minimum Radius Curve Negotiable - 174m

16. 05. WAG-7
Salient Details :-
Track Gauge - 1676mm
Total HP - 5000
Starting Tractive effort - 412KN (30t)
Max. Service Speed - 140 KMPH
Breaking – Air & Hand Brake
Wheel Arrangement - Co-Co
System Voltage - 25KV AC, 50 Hz
Weight of loco – 123t 1%
Type Of Bogie - Fabricated
Wheel Dia. - 1092mm
No Of Traction Motor & Type - 6 No Type- HS-15250 AH
Total Width Of Locomotive – 3055mm
Minimum Radius Curve Negotiable - 174m

17. BRIEF SUMMARY OF IMPORTANT ITEMS USED IN 3-PHASE LOCO
01. Main Transformer
Function- To convert the overhead line voltage(25KV) to the lower operating voltage.
02. Power Converter
Function- To convert single phase 25KV AC supply into 3-Phase AC with variable voltage and variable frequency
and feed it to Traction motor.
03. Auxiliary Converter
Function- To convert single phase 1000 volts supply (from auxiliary winding of main transformer ) into three phase
415 volts (variable voltage variable frequency) to different three phase auxiliaries.
04. Control Electronics
Function- All the functions of the Locomotive are controlled by the Control Electronics .
05. Traction Motor
Function- There are total 6 traction motors in WAG-9/WAP-7 loco .TM 1-2-3 are mounted in bogie -1 and are fed from
Power Converter 1 where as TM 4-5-6 are fed from Power Converter -2. In case of WAP-5 Loco there are 4 Traction
motors in which Power Converter -1 feeds to TM-1-2 and Power Converter 2 feeds power to TM-3-4. Traction Motors are
asynchronous squirrel cage Induction Motor. Power converter providing the power sources.

18. 06. Primary voltage transformer
Function - Potential transformer situated on the loco roof reduces the Catenary voltage approx. 25 KV to 200 volts
for metering purpose.
07. Surge Arrestor
Function- It is for high voltage protection for the Locomotive situated on the roof of the Loco.
08. Pantograph
Function- To collect the power from the overhead 25 KV supply to the Loco.
09. Vacuum Circuit Breaker
Function- It is protective circuit breaker of Locomotive for any abnormal situation in the Loco and disconnects the
loco from the supply.
10. Speedometer
Function- For indicating speed of the Loco

19. 11. Transformer oil pump
Function- To circulate oil from Transformer to Oil Cooling unit and back
12. Converter oil pump
Function- To pump to circulate oil from Converters to Oil Cooling unit and back.
13. Oil Cooling Unit
Function- For cooling Transformer oil and Power Converter Oil by taking air from air.
14. Temperature Sensor
Function- For detecting temperature of Transformer oil (maximum allowable oil temperature is 150 degree Celsius).
15. Pressure Sensor
Function- For detecting pressure of Transformer oil pump.
16. Machine room blower
Function- To cool machine room( to keep temperature below 70 degree Celsius) by ducting and limit the temperature
of control Electronics below 70 degree Celsius.

20. 17. Machine room scavenge blower
Function- To clean dust from air filters of Machine Room.
18. Traction motor blower
Function- For ventilation of the Traction motors (connected with bogie 1&2) by forced air.
19. TM / oil cooling scavenge blower
Function- To clean dust from Traction Motors and oil cooling units.
20. Fire Detection Unit (FDU)
Function- Through a ring line with apertures at regular distances air in the machine room is extracted with a fan and
checked for traces of smoke by a detector. The unit is equipped with two smoke sensors.
21. Fire Extinguisher
Function- The loco is equipped with 4 Fire Extinguishers, one in each Driver Cab and two in Machine Room. The Fire
Extinguishers are to be operated manually to extinguish fire.

21. 22. Battery
Function- It is a NI-Cd Battery, which consists of 78 cells, which are connected in series. It is in two halves which are
located on each side of the loco. All electrical components in the control current circuit are designed for a nominal
voltage 110V DC.
23. Main Compressor
Function- It is a pressure creating equipment for necessary pressure for entire Pneumatic circuit of the loco.
24. Auxiliary Compressor
Function- It is a pressure creating equipment for raising the Pantograph
25. Master Controller
Function- It is a device used by Driver of the loco for controlling loco during motion in the forward and reverse
direction .
26. Emergency Flasher light
Function- It is a flasher light
(amber colour ) glow during Emergency condition (during Emergency Chain Pulling and during Emergency Braking).

22. 27. Front & Rear Marker Light
Function- It is the light for making the presence of Loco during stop condition of the in the rail track to avoid accident.
28. Head light
Function- It is the light used for clear visibility of rail track during loco movement in the night time.
29. Auxiliary Transformer
Function- To supply 415 V single phase power to two machine room blowers, two scavenge blowers etc.
30. Air drier
Function- It is used for purifying and separating moisture from air at intake. It is actuated when one of the main
compressors is switched on
31. Hydraulic Damper
Function- To dampen the rebound rate of springs.
32. Side buffer
Function- To take care the buffing load

23. 33. Brake System
Function- To control the main pneumatic brake system of loco.
34. Axle box complete
Function- It is housing for axle bearing.
35. Gears & Pinions
Function- It transmits traction power to the wheels.
36. CBC
Function- It is mainly used for coupling.
37. Spring
Function- It is a suspension from axle to bogie and bogie to body. Suspension system minimise the shock caused by
vibration of the track and also carry weight of the loco body.

24. SHOPS VISITED DURING TRAINING
1. WS-09
2. TR-52
3. ELF-17
4. ELB-12
5. SFS-03
6. HMS-08
7. ELB-18
8. ELF-26
9. ELDO
10. ELA-16
11. ELF-15

25. 01. WHEEL SHOP-09 (WS-09)
AXLE FORMATION
WHEEL PRESS
WHEEL SURFACE FINISHING
AXLE SURFINISHING
GEAR FACE RUN OUT
GEAR PRESS
SUSPENSION TUBE ADDED
BEARING AND AXLE BOX ADDED

26. 02. TOOL ROOM – 52
TOOL ROOM IS NOT BASICALLY A PRODUCTION UNIT FOR RAILWAYS. THIS IS THE PLACE WHERE
• TOOLS ARE MADE UP
• DAMAGED TOOLS ARE REPAIRED
• BASIC MACHINING OPERATIONS ARE CARRIED OUT
➢ LATHE OPERATION
➢ FITTING
➢ MACHINING
➢ REPAIRING
➢ MILLING
SMALL COMPONENTS MANUFACTURED IN TOOL ROOM
• HOLDER
• FORK HEAD
• SUPPORT
• SUSPENSION EYE
• SUSPENSION PLATE
• GUIDE PLATE
• AXLE HOLDER
• AXLE GUIDE BEARING
• HOLDERSEAL PLATE
• SUSPENSION EYE
• SUSPENSION PLATE
• WEB

27. 03. ELECTRIC LOCO FABRICATION SHOP-17
Fabrication Of Different Parts
• Fabrication Of Head Stock (2 Nos.)
• Fabrication Of Central Under Frame (1 Nos.)
• Fabrication Of Bolsters (2 Nos.)
• Fabrication Of Central Sill (1 Nos.)
• Fabrication Of Side Sill (2 Nos.)

28. 04. ELECTRIC LOCO BOGIE-12 (ELB-12)
Different stages are-
1. Underframe of loco
For WAP-4
1. Manipulator
➢ For turning the underframe
➢ And welding of different positions
2. RWU-1
➢ Corridor angle and corridor plate
3. USD (Upside down position)
➢ Central pivot
➢ Reservoir/Draft Gear
4. Shell
➢ Cab+ side wall+ roof
➢ CBC

29. 05. SMITY & FORGE SHOP-03 (SFS-03)
Mainly operation done for
➢ Ducting parts
➢ Head Stock manufacturing
➢ Production of Handle, Operating Rod, resting hook, pipe plate bending
➢ Oxy-cutting Profile machine
➢ Bending & forging done by Pneumatic Hammer.
HEAD STOCK PRODUCTION
➢ Take bottom plate – Tagging with a rigid table
➢ Front plate tagging
➢ Tagging of web plate & collision plate to the bottom plate and welding
➢ Rear plate tagging and weld with webs and collision plate.
➢ Top plate placed after the manipulator operation and welding
➢ Side top plate
➢ Buffer and triangle plate set-up
➢ Coupler plate positioning

30. 06. HEAVY MACHINE SHOP-08 (HMS-08)
MAINLY PRODUCED –
1. Magnet Frame
2. Suspension Tube
3. Stator
4. Equilizer

31. 07. ELECTRIC LOCO BOGIE -18 (ELB-18)
Mainly Operation done
• Motor with wheel assembly
• Running test
• Bogie assembly with bogie wheel
TRACTION MOTORS
3-PHASE TRACTION MOTOR
TYPE 6FRA6068
3-PHASE TRACTION MOTOR
TYPE 6FXA 7059
HITAHI TRACTION MOTOR
TYPE HS15250A

32. 08. ELECTRIC LOCO FABRICATION-26ELF-26
01. RWU-1 (Right Way Up-1) 03. RWU-2 (Right Way Up-2)
• Cab
• Partition plate
• Side wall (Tightening & Centring)
• Roof guarder
• Corner angle
• Cable tray bracket & angle
• Cable tray assembly
• Rear wall
• CBC & Cattle guard & Striker casting
• Jig fitment for placing Brackets
• Blower fitment
• Minor works
➢ Trail of roofs 1, 2, 3
➢ Matching or not with roof guarder
➢ Tacking operation of inside threads
➢ Strip, Caliper & Square bar welding
➢ Rain guard fitment
➢ Final Inspection
➢ Main stages of RWU-2
04. Roofing work
➢ Shell stage
➢ Machine Room
➢ Air Ventilation Assembly
➢ End fill plate
➢ Channel
➢ Drilling operation for CBC
➢ Reservoir base fitment
02. USD (Upside Down)
➢ Compressor leg
➢ Battery mounting leg
➢ Junction box
➢ Central pivot
➢ Housing work
➢ Manipulator guide
➢ Spring box
➢ Draft gear
➢ Inspection

33. 09. ELECTRIC LOCO DESIGN OFFICE (ELDO)
There are four sections in ELDO (mechanical ) –
Here Mainly design of loco works are done.
➢ Pneumatic Section
➢ PPO Section
➢ Bogie Section
➢ Superstructure Section

34. 10. ELECTRIC LOCO ASSEMBLY-16 (ELF-16)
Here work has been done in two ways-
➢ Mechanical work
➢ Electrical work
In mechanical basically following assemblies are done
➢ Buffer fitment
➢ Window fitment
➢ Transformer fitment
➢ Final wheeling on Motor bogie
➢ Front glass, final window fitment, door fitment&
other various operations are done.
➢ Pipeline fitment
➢ Assembly of a lot of parts

35. 11. ELECTRIC LOCO FABRICATION-15 (ELF-15)
Four Operation are done-
1. Shearing operation
➢ Nibbling
➢ Punching etc.
2. Bending operation
➢ Cold bending up to 25mm
3. Fabrication
➢ Small fabrication- ducting, security panel
➢ Heavy fabrication- Headstock
4. Welding
➢ MMAW done for single phase loco
➢ MIG done for three phase loco

36. ADVANTAGES OF THREE- PHASE LOCO
∙ Low cost of manufacturing, running and maintaining locomotives and multiple units
∙ Higher power-to-weight ratio resulting
∙ Less noise pollution
∙ Faster acceleration clear lines quicker to run more trains on the track of urban areas
∙ Reduced power loss
∙ Independence of running cost from fluctuating fuel prices
∙ Service to underground stations where diesel engines cannot work properly
∙ Reduced environmental pollution
∙ More comfortable ride on multiple units
∙ High energy efficiency
➢ Fewer locomotives
➢ Faster locomotives
➢ Higher practical limit of power
➢ Higher speed

37. NEW PROJECTS
➢ Electric Locomotive Factory at Dankuni, West Bengal
The unit will work as an ancillary unit of CLW. Initially state of art 3-phase high HP locomotive
with regenerative breaking of 6000 HP (WAG-9) electric locomotive will be turned out.
Subsequently, the infrastructural facilities shall be utilized for the production of 9000 HP
locomotives in future.
➢ Centre of excellence for design, development & evaluation of advanced technology
system for electrical rolling stock.
The purpose of establishing the Centre of Excellence is to develop capability for designing,
development and evaluation of advanced technology systems for Electric Rolling Stock. The
idea is to become a technology exporter from present status of technology importer in
Rolling Stock equipment. The main benefit that will accrue from this project is that we shall
become self-reliant in the field of development of Electric Rolling Stock equipment which will
come in a big way not only for the domestic requirement of adoption of new technology in
rolling stock but we shall be in a position to cater to the emerging world market as per the
customized requirement of different countries.