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Organization Profile



The Organization Profile

Introduction and historical backdrop…

Administrative Building, PLW

Diesel locomotives were introduced in Indian Railways in late 1950s, when first lot of diesel locomotives was imported from M/s. ALCo, USA.  With the setting up of Diesel Locomotive Works (DLW) at Varanasi in the year 1961, the additions to diesel locomotive fleet started at a regular pace. In the earlier years of diesel operation, a limited demand of spares was being met either by imports or by manufacturing in DLW, Varanasi, but the demand increased with the increasing size and age of the loco fleet.

To meet the ever-growing demand of high precision components required for maintenance of diesel loco fleet, a decision was taken in the year 1979 to set up a dedicated Diesel Component Works at Patiala. The Foundation Stone of Diesel Component Works (DCW), Patiala was laid on October 24, 1981 and production started in 1986. Besides manufacturing diesel engine components, DCW also started rehabilitation of Traction Machines (Traction Motors and Traction Alternators), Engine Blocks (Crank-case) and Power Packs, giving them a new lease of life.


A bird’s eye view of PLW Workshop

Production Shops were also set up for chrome plating of cylinder liners and manufacturing of carbon brushes of various types for traction and auxiliary machines. A dedicated Bogie Shop was set up for manufacturing of Motorized Truck Assemblies (Bogies) and Motorized Wheel Sets for supply as unit exchange spares to diesel loco maintenance sheds.

Later, a decision was taken to carry out Mid-life Rebuilding (MLR) of diesel locomotives which has rendered a service life of 16-18 years.  Accordingly, Phase-II project of DCW was sanctioned and the MLR work started in 1989. During MLR, retro-upgrades of technology were also applied to increase the horse power of locomotives from 2600HP to 3100HP, improve their fuel efficiency and also reduce their maintenance periodicity. With this, the unit was rechristened from DCW to Diesel Loco Modernization Works (DMW) in July,2003 to signify the modernization of diesel locomotives being done here. Since inception, 2296 ALCo diesel locos have been rehabilitated/modernized by DMW.

DMW also started manufacturing new WDM3D 3300HP ALCO Locomotives in 2010-11 but the activity was discontinued after 2015-16.  Till then 227 new WDM3D locomotives were manufactured by DMW. To cater to the shunting requirements, Multi-Genset Locos were conceived which were having fuel saving of 15-20%. First such loco was turned out in Mar’13 and three such locos were manufactured thereafter.


     Rebuilt WDP1 ALCo Diesel Locomotive

Fuel-Efficient Multi-Gen Set WDM2G Diesel Locomotive

DMW acted as a nodal agency to provide maintenance support for the entire fleet of ALCo design diesel locomotives owned by Indian Railways. It included bulk procurement and distribution of critical maintenance spares to all Zonal Railways, entering into AMCs and RCs for critical systems, planning and execution of retro-upgrades on locomotives sanctioned under Rolling Stock Program of Indian Railways.

From the last few years (from 2017-18), Indian Railways has embarked on the path of complete electrification of all its routes, at an accelerated pace. As a result, DMW had to realign itself with the changing requirements of nation. Leveraging its inherent strength of lean and agile working, it quickly transformed itself into a new electric locomotive manufacturing unit. The first 3-Phase IGBT based 6000HP WAP7 Electric Loco was turned out from DMW in Feb’18 and its series production was started from 2018-19 onwards.

3 phase IGBT based 6000HP WAP7 Passenger
Electric Locomotive
8- Wheeler Diesel Electric Tower Car (DETC/US)

Adding another feather to its cap, DMW started manufacturing much needed Tower Cars for the massive electrification projects being under taken by Indian Railways. The first 8-Wheeler Diesel Electric Tower Car (DETC) was manufactured in Dec’2018 and its series production was started from 2019-20. As the pandemic forced Railways to give priority to freight traffic, DMW introduced manufacturing of electric freight locos for the first time and the first WAG9HC locomotive was turned out in March 2021.

DMW also took up a project to convert diesel locomotives to a 10000 HP twin electric loco, and the prototype WAG10 loco was turned out from DMW in March’21.

Again, due to these major changes in its product profile, it has been renamed as Patiala Locomotive Works (PLW) on 28.01.22, giving it a full-fledged status of a Production Unit of Indian Railways.


3 phase 6000HP freight Locomotive (WAG9HC) 10000HP Converted Electric Locomotive (WAG10)

Not sitting on these laurels, PLW has transformed its existing infrastructure to cater to changing requirements of Indian Railways. The facilities, which were earlier dedicated to diesel locomotives have been converted for providing maintenance support to electric loco sheds. In this direction, it started overhauling and rehabilitation of traction motors used on Hitachi as well as new generation 3-Phase electric locomotives. To fully utilize the existing infra-structure, PLW started producing new 3-Phase 6FRA6068 Traction Motors in-house for meeting its own needs of new loco manufacturing.

The Bogie Shop of PLW, which is unique of its kind, has catapulted itself to manufacturing new Motorized Bogies and Motorized Wheel Sets for electric locos for supply to Zonal Railways. It has now developed capabilities to manufacture all kinds of bogies for diesel as well as electric locos.

With its inherent strengths, PLW is all geared up to achieve new heights and serve the nation to the best of its capabilities.



Foundation Stone of the Project laid Oct'81
Loco Components manufacturing started Jan’86
First Rebuilt WDM2 Locomotive turned Out Nov’89
First Rebuilt WDM3A (3100 HP) Locomotive turned out Jan'00
First Rebuilt WDM3C (3300 HP) Locomotive turned out Nov’02
First WDM3D ALCO Locomotive manufactured Mar’11
Fitment of Electronic Fuel Injection System in ALCO Loco Aug'11
Fitment of Auxiliary Power Unit (APU) for fuel saving Oct’12
First Multi Gen Set Loco manufactured Mar’13
First WDG3A loco was supplied to NRC (NTPC) Mar’16
First 3-Phase IGBT based 6000 HP WAP7 Electric Loco produced Feb’18
First  8-W Diesel Electric Tower Car (DETC) produced Dec’18
First 6FRA 6068 Traction Motor Manufactured in-house Dec’18
First 3-Ph IGBT based 6000 HP WAG9HC Electric Loco produced Mar’21
First 10000 HP WAG10 Twin Electric Locomotive produced by conversion of Diesel Locos Mar’21
200th DETC turned out from PLW Feb’22
300th 3-Phase electric loco turned out Feb’22



Land & Buildings

(i) Workshop area (Sq m) 837936
(ii) Township area (Sq m) 1416800
(iii) Total Area (Sq m) 2254736 (557 Acres)
(iv) Covered area in Workshop (Sq m) 90718
(v) Covered area of other service buildings (Sq m) 74588

                 Staff Quarters

Type-I Type-II Type-III Type-IV Type-IV (Special) Type-V PLW House Total
329 949 274 86 64 52 1 1755

Township is self-sufficient in all basic amenities such as Hospital, School, Shopping Centers, Bank, Post Office, Recreational and Sports facilities.

Electrical Services

Electrical power requirement  
     (i)  Average demand (monthly) 3262 kVA
    (ii)  Maximum demand (monthly) 3645 kVA
Number of H.T. sub stations 11
Roof-top Solar Power generation capacity 2150 kWp
Electrical Energy Consumption incl. Solar (2020-21) 98.84 lakh kWh
Renewable energy generated (2020-21) 26.00 lakh kWh
Standby power generation capacity (DG sets) 820 kVA

Water Supplies

Water consumption (lakhs of liters/day) (2020-21) 48.03
Rain Water Harvesting Pits (nos.) 21

Railway Hospital

No. of beds in hospital 50



Manufacturing & Support Shops

  • Light Machine Shop
  • Heat Treatment Shop
  • Traction Machine Shop
  • Heavy Machine Shop
  • Carbon Brush Shop (under closure)
  • Plant Maintenance Shop
  • Tool Room
  • Electronics Lab

Assembly and Testing Shops

  • Loco Assembly Shop
  • Power Pack Shop
  • Bogie Shop
  • Light Fabrication Shop
  • Electrical & Commissioning Shop
  • Air Brake Shop
  • Loco Testing & Paint shop

Manpower Resources

Sanctioned Strength
On Roll
76+1 (WC)
Level-1 (Erstwhile Grp “D” now Grp “C”)



            Certifications and Accreditations

  • IS/ISO 9001:2015 Quality Management System
  • IS/ISO 14001:2015 Environment management System
  • IS/ISO 45001:2018 Occupational Health & Safety
  • IS/ISO 50001:2018 Energy Management System
  • IS/ISO:3834-2: 2005 for welding processes
  • ISO/IEC 17025: 2005 NABL accreditation for C&M Lab
  • 5S certification for work place management.
  • It is in the process of obtaining International Railway Industry Standard (IRIS) ISO/TS/22163:2017 certification for all its business processes

             Awards, Ratings and Recognitions

  • GreenCo Certification achieved with Gold Rating (2017)
  • Green Building Certification with Platinum Rating for PLW Administrative Building (2019)
  • Golden Peacock Award – 2020 (Energy Efficiency)
  • Energy Efficient UnitNational Award-2021 by CII Hyderabad
  • Winner of Environment & Cleanliness Shield in the 66th National Railway Awards-2021


PLW team with Golden Peacock Award – 2020





Product/Type of Rolling Stock
Production during 2021-22
New WAP7 Electric Locos (Nos)
New WAG9H -Electric Locos (Nos)
New 8-Wheeler Diesel Electric Tower Cars (DETC) (nos)
Motorized Truck Assemblies (Bogies) for WAP7/ WAG9HC locos
Motorized Wheel Sets for electric and diesel locos (nos)                      
Supply of other items (value in Crs.)
Total Value of Production (in Crores of Rs.)



Technical Training Centre

A Technical Training Center is functioning at PLW, Supervisors and Technicians undergo Initial and Refresher Training Courses at Technical Training Center, PLW. Besides this, courses on Industrial Safety, Fire Fighting and First Aid are also conducted regularly. In addition, a ‘Knowledge Center for CNC Machines’ was set up in 2017, where specialized courses for Programming, Operations and Maintenance of CNC Machines are regularly conducted, not only for PLW staff but also for maintenance staff of Zonal Railways. However, for the time being these courses are being delivered online due to pandemic related constraints.



PLW has a rich sporting culture and is actively associated with the promotion of sports among its employees and their wards. PLW Sports Association is headed by Sh. S. N. Dubey, Principal Chief Administrative Officer and supported by Sh. Kuldeep Singh, President and Sh. Parmod Kumar, Sports Secy. of PLWSA.

PLW has a lush green stadium that boasts of having excellent facilities for Cricket, Kabaddi, Volleyball and Athletics. Besides the green and clean Stadium, the Golf course is another feather in our cap. On 23rd July 2021, Sh. S. N. Dubey, PCAO inaugurated a new Walking Path in PLW Stadium made especially for promoting the employees’ health and comfort while walking. 

Most advanced and wellequipped modern gymnasium having wonderful physical fitness facilities for Cardiac and Muscular Fitness for use of our Sports-persons and other employees of PLW have been installed in the PLW stadium. Two out-door gyms are also installed in PLW Colony I & II. A Synthetic Lawn-Tennis Court is also made in PLW premises.

PLW Players have performed exceptionally well, especially in Athletics:

  • Ms. Kamalpreet Kaur, represented India and bagged 6th position in Finals in Discus Throw, Tokyo Olympics 2020 (National Record-66.59m)
  • Ms. Annu Rani, represented India in Javelin Throw, Tokyo Olympics 2020 (National Record-63.24m); Bronze medallist in Asian Games 2014
  • Ms. Manpreet Kaur, represented India in Shot-put, Rio Olympics 2016
  • Ms. Gagandeep Kaur, Bronze medallist in Archery, Commonwealth Games 2010
  • Sh. Eknath Turambeker set a new national record in the 35 Kms Walking event held in World Athletics Walking TeamChampionship held at Muskat.
  • Ms. Gagandeep Kaur selected in the Indian National Squad-2022 (Shooting)for the forthcoming International competition.

Apart from the above, inter departmental tournaments are regularly organized in various sporting categories to promote physical fitness among our employees. PLWSA successfully organized last Inter departmental cricket tournament in the month of February 2021 in PLW Stadium.  An All India Railway Athletics (throw events) coaching camp for the preparation of Tokyo Olympics was also held at PLW Stadium from 15.01.2021 to 09.03.2021 under the mentor-ship of Sh. Shakti Singh, Arjuna Awardee, Senior Sports Officer of PLW.

Sports is a way of life for all of us here and we are committed to providing better sporting facilities to nurture talent and to keep work force physically fit.




Source : Welcome to PLW Official Website ! CMS Team Last Reviewed on: 30-04-2022  

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