The document provides an overview of industrial training received at Sri Lanka Railways from January to April 2015. It begins with introducing the history and operations of Sri Lanka Railways, and describes the vision and mission of the railway's technical training center. It then outlines the workshops that perform locomotive repair, tool making, and other maintenance tasks. The document details the key components and systems of diesel-electric locomotives, as well as various metalworking processes like casting, heat treatment, and machining. It also discusses safety management and highlights the practical experience gained during training, such as assembling machinery and learning to work safely in different environments. In conclusion, it provides suggestions like adopting new technologies and prioritizing employee safety.

1. INDUSTRIALTRAININGAT
SRI LANKA RAILWAYS (SLR)
26th January 2015 - 24th April 2015
Lakshitha M.A.R
EG/2012/1980
Department of Mechanical and Manufacturing
Faculty of Engineering
University of Ruhuna

2. Presentation Outline
 Introduction to Sri Lanka Railways
 Introduction to the training establishment
 Chief Mechanical Engineer’s workshops
 Safety management
 Training experience
 Suggestions
1 of 14

3. Introduction to Sri Lanka Railways
History
Introduced in Sri Lanka in 1864 to transport coffee by the British colonial government. Till 1953,
Ceylon's railways operated steam locomotives. In the golden era, it enhanced its service by changing to
diesel locomotives, under the leadership of most respected chief mechanical engineer B.D Rampala.
Services
Operates both intercity and express services, connecting major population centres, and commuter rail,
serving Colombo commuter traffic. The railways also transport freight.
Sri Lanka Railway department is Sri Lanka's railway owner and primary operator. Presently the Sri
Lankan Railway network consists of 1,508 kilometers.
2 of 14

4. Introduction to the Training Establishment
Vision
To provide technical training conforming to international standard in order to produce
competent and skilled man power required to maintain timely operated efficient
steady and reliable passenger and good train series.
Mission
To become the training institute with the highest level of acceptance in Sri Lanka in
order to produce skilled craftsman having national vocational skill level who are
capable to go forward with a new technical developments to railway and Sri Lanka.
Sri Lanka German Railway technical training center is the key organization which
provides railway technicians to the nation.
3 of 14

5. Chief Mechanical Engineer’s workshops
The total area of the workshops is 77 acres. In these, workshops repairing and modifying of
locomotive, making of required railway maintenance tools and several other tasks are done.
Main types of workshop Groups
1. Locomotive Group
2. Carriage and Wagon Group
3. Production Group
4. Electrical Group
4 of 14

6. Diesel Electric Locomotive
• Prime mover is a diesel engine.
• The diesel engine is connected to an electrical generator, creating
electricity that powers electric traction motors.
Diesel Electric transmission
Prime mover
Traction motor
5 of 14

7. Diesel Engine Auxiliaries
 Turbocharger
 Supercharger
 Compressor
 Water pump
 Oil pump
 Radiator
 Oil cooler
6 of 14

8. Fuel Injection
Atomizing fuel through a small nozzle under high pressure,
Injector Pump
The device that pumps diesel (as the fuel) into the cylinders of a diesel engine.
Types
1. Inline pump
2. Unit pump
3. Individual pump
4. Common rail system
Injector
This is the part that converts pressurized fuel liquid coming from the pump, into fine droplets.
Fuel Injector
Injector Pump
7 of 14

9. Foundry Shop
Sand Casting Process
• Molding
Preparing a mold for receiving
the metal.
• Melting and pouring
Preparing molten metal of the proper
composition and temperature and pouring into
the mold
• Cleaning
Includes all the operations after pouring
8 of 14

10. Heat Treatment
• Heating at a specific
rate
• Soaking at a temperature
for a period of time
• Cooling at a
specified rate
Annealing
Heating to above the re-crystallization temperature
and then cooling.
Tempering
Heat material according to material tempering color
chart and cool in atmospheric condition
Quench hardening
Heating material to a certain temperature and then
rapidly cooling the material.
9 of 14

11. Machining
Lathe Machine
Radial drilling machine
Milling Operation
10 of 14

12. Safety Management
Safety Equipment
11 of 14

13. Training Experience
I could gain practical experience about
 Assembling and dissembling of machinery
 Welding
 Production
 How to work in a real working environment
 How to work with different types of people
12 of 14

14. Suggestions
 Use new technologies.
 Stop political placements.
 Make practically success regulations and rules.
 Give the instructions about the employees’ safety and advise them to
follow the safety instructions.
 Make good travelling system within the workshops.
13 of 14

15. 14 of 14