Chittaranjan Locomotive Works

Chittaranjan Locomotive Works (CLW) is an electric locomotive manufacturer based in India. The works are located at Chittaranjan in the Asansol Sadar subdivision of West Bengal, with an ancillary unit in Dankuni. The main unit is 32 km from Asansol and 237 km from Kolkata. CLW has stores and offices in Kolkata, as well as inspection cells in New Delhi, Mumbai, Kolkata, and Bangalore. It is the largest locomotive manufacturer unit in the world, producing 431 locomotives in 2019–20.[1]

Chittaranjan Locomotive Works
FormerlyLoco Building Works
TypeGovernment
IndustryElectric locomotive
Founded26 January 1950 (1950-01-26)
HeadquartersChittaranjan, Asansol, West Bengal, India
ProductsWAP-4
WAP-5
WAG-5
WAP-7
WAG-7
WAG-9
ParentIndian Railways
Websitewww.clw.indianrailways.gov.in

History

In the late 1930s, a committee consisting of M/s Humphries and Shrinivasan was created to consider the economic possibilities of establishing locomotive manufacturing facilities in India. The initial project at Chandmari, east of Kalyani in West Bengal, was found to be unsuitable due to the partition. A new survey led to the present site at Chittaranjan being established, which was approved by the railway board in 1947.[2] A survey of the proposed area began on January 9, 1948; the rocky soil was an advantage in erecting structural foundations, and the undulating terrain solved the problem of drainage for the township. The Damodar Valley Corporation (DVC) envisioned hydro-electric and thermal power stations in the area, assuring adequate power availability for the project.[3]

The project was launched as Loco Building Works in 1950 to produce 120 average-sized steam locomotives. It also had the capacity to manufacture 50 spare boilers. Production of steam locomotives commenced on January 26 1950. The first President of India, Rajendra Prasad, dedicated the first steam locomotive to the nation on 1 November 1950, and on the same day, the Loco Building Works was renamed as Chittaranjan Locomotive Works after Deshbandhu Chittaranjan Das. The nearby Mihijam Station was also renamed as Chittaranjan.

In 1962-63, a steel foundry was set up to manufacture cast steel locomotive parts. Production of diesel-hydraulic locomotives began in 1968. After manufacturing 2351 steam locomotives of 5 types and 842 diesel-hydraulic locomotives of 7 types, production of both of these classes was discontinued from 1973 to 1974 and 1993 to 1994, respectively.[4][5] Electric locomotive production commenced in 1961. The first Prime Minister of India, Pandit Jawaharlal Nehru, commissioned the first 1500 V DC Locomotive named Lokmanya on 14 October 1961. The production of 25 kV AC DC locomotives commenced on 16 November 1963, with the WAG-1 series, a broad-gauge 25 kV A.C. freight locomotive with 2840 hp and a maximum speed of 80 km/h. The first WAG-1 locomotive was named Bidhan.

CLW gradually began upgrading their locomotives to produce 6000 hp and achieve 160 km/h, and also started building the 25 kV AC/1500 V DC, AC/DC WCAM-1 series for hauling mail/express trains on the Western Railway. Additionally, production of DC traction motors and control equipment commenced in April 1967. CLW became the first manufacturer in India (as well as the second in Asia and fifth in the world) to manufacture a 3-phase GTO Thyristor-controlled electric locomotive. The first WAG-9 series locomotive—the first indigenous 6000 hp freight electric locomotive—was rolled out on 14 November 1988, and christened Navyug. During 2000-2001, Navodit, the first passenger version of the WAP-5 series with a service speed of 160 km/h and the potential to reach 200 km/h, was manufactured; the project's highest-priority items are the development of material sourcing, indigenization, and cost reduction.

CLW has in-house facilities for machining and assembly of wheelsets, fabrication, bogies, etc. The facilities include modern CNC machines, plasma cutting machines, and inert gas welding sets. The factory obtains its iron & steel from SAIL, RINL and MDN, and sometimes from private steel plants like TATA, Jamshespur, and Jindal Steel. Hydroelectric power comes from PGCIL and the DVC's Maithon dam.

CLW's environment conservation efforts have been recognized by the World Environment Foundation, and was awarded the Golden Peacock Award for Environment Management 2006. CLW has fully complied with the provisions of the Industrial Safety Act, 1948 and was awarded the Safety Innovation Award in 2006 and 2009 by India's Institute of Engineers..

Location

Chittaranjan is situated within 15 km of West Bengal’s rich coal belt, and 10 km from the DVC's Maithon Dam which supplies the site's hydroelectric energy. The Maithon reservoir provides a perennial source of water for the township and CLW, and the hilly nature of the area allows for easy drainage. The workshop and town are spread over an area of over 18 km2.[6]

Water supply

The principal source of the water supply is the Ajay River, a slender hill stream, which passes around the township. As the river dries up during April, May, and June, an artificial lake with a capacity of 163,600,000 litres was built by constructing a 1,600 ft long and 40 ft high dam across one of the main out-fall streams. A submerged dam across the Ajay leads water through a sealed channel into an intake well and then to the filter beds in the centre of the township with a capacity of 90 lakh (9,000,000) litres per day.[7]

Power supply

Electricity was first generated by several small portable plants. Three 600 kW thermal standby sets were later installed to provide electricity, and in December 1950, power started being generated from the DVC's temporary packet sets at Kamardhubi. Since January 1952, power is supplied from Sindri. Of the three thermal standby sets, one has been released to the N.E. Railway, Gorakhpur, while the other two will remain until the DVC power supply is fully established.

Milestones
1947 Sep Site for Chittaranjan Locomotive Works located
1948 Mar Construction work started
Apr Workshop set up
1950 26 Jan Production inaugurated by Smt. Basanti Devi, wife of Chittaranjan Das
1 Nov Namkaran ceremony of CLW's first steam locomotive, performed by President of India Rajendra Prasad
1951 12 Feb KG Hospital formally opened by His Excellency Dr. K.N.Katju, Governor of West Bengal.
1952 1-2 Mar Prime Minister of India Pandit Jawaharlal Nehru visits Chittaranjan accompanied by Dr. B.C.Roy, Chief Minister of West Bengal
21 Oct Railway Minister Shri Lal Bhahadur Shastri visits CLW
1953 10 Oct Dr. Sarvapalli Radhakrishnan, Vice President of India, visits CLW
1954 6 Jan 100th Steam Loco, CHITTARANJAN 100, inaugurated by Railway Minister Shri Lal Bahadur Shastri
1955 27 Apr Rajendra Prasad drove the 200th locomotive from the works
28 Nov Visit by Their Majesties the King, Tribhuvan Bir Bikram Shah, and Queen of Nepal
17 Dec Visit by Their Excellencies Mr. N.A. Bulganin and Mr. N.S. Khruschev from Russia
1956 14 Nov Visit by His Imperial Majesty Mr. Haile Selassie, Emperor of Ethiopia
12 Dec Visit by Mr. Chou En-lai, Prime Minister of the People's Republic of China
1957 13 Jan Visit by Their Holinesses, the Dalai Lama and the Panchen Lama
1958 18 Mar Visit by Mr. Churu Stoika, Prime Minister of Romanian People's Republic
20 Nov Visit by Mr. Marcel Roberts, Chief Occupational Safety & Health Division, International Labour Organisation
1960 25 Jan Technical collaboration agreement signed with Messrs. F.H.Lloyd & Co. Ltd., Wednesbury, to establishing a steel foundry at Chittaranjan
16 Apr 1000th locomotive produced
Apr Visit by Mr. Gamal Abdel Nasser, President of the United Arab Republic
1961 Jan Steel foundry set up
2 Feb Visit by Kumari Anita Bose, daughter of Netaji Subhas Chandra Bose
16 Apr Opening of Rabindra Manch and open air theatre
14 Oct First WCM-5 DC electric loco, Lokmanya, commissioned by Pandit Jawaharlal Nehru.
1962 Oct Electric Loco Shop set up
1963 16 Nov First WAG-1 25 KV AC electric loco, Bidhan, commissioned by Pandit Jawaharlal Nehru.
1966 Traction Motor Shop set up
1967 16 Apr 1st traction motor built, the largest in India at the time.
1968 6 Jan 1st diesel-hydraulic shunter, INDRAPRASTHA, commissioned by Railway Minister Shri C.M.Poonacha
1971 Last steam engine, Antim Sitara, produced
1972 1st TAO-659 traction motors despatched
30 Jan 1st WCAM-1 AC/DC Dual Voltage electric loco, Vallabh, commissioned by Shri Sidhartha Shankar Ray, Chief Minister of West Bengal
1980 1 Oct 1st Rajdhani electric loco WAP-1 commissioned
1985 3-4 Jul Flagging off of the 600th diesel loco, MOHANDAS, by Shri Madhav Rao Scindia, Minister of Railways
1986 2 Nov Visit by Professor Nurul Hassan, Governor of West Bengal
1987 6 Apr JAWAHAR (WAP-3) commissioned and christened by Shri Madhav Rao Scindia, Minister of State for Railways, for Shatabdi Express services
1988 Apr First batch of Hitachi traction motors despatched
1989 May Collaboration agreement signed with Rockwell International Corporation .
1990 31 Mar 105th electric loco, KIRTIMAN, inaugurated by Mr. R.D. Kitson, member of the Mechanical Railway Board
1991 7 Jan Flagging off of 1500th electric loco, SUKANYA, to mark the International Year of the Girl Child
1992 3 Aug 1st 5000 hp high-adhesion WAG-7 electric locomotive, SHANTIDAN, christened by Mother Teresa
1993 6 Apr Last BG diesel shunter, VIRAM, and last NG diesel locomotive, ITI, produced for the 1992–93 year
11 Jun Inauguration of the Sidhu Kanu Setu bridge over the Ajay river by R.K. Shukla, GM/CLW
1994 23 Jan WAP-1 electric loco, PRAGATISHEEL, built with Hitachi traction motor
27 Aug First 5000 hp WAP-4 passenger locomotive ASHOK flagged off.
1996 13 Jul ISO-9001 certification awarded to CLW by IRQS.
8 Aug ISO-9002 certification awarded to the steel foundry by IRQS.
14 Sep First modular WAG-7 loco KARAMVIR flagged off
27 Dec Production 3-phase 6000 hp WAG-9 locomotive (CKD/SKD) flagged off
1998 29 Apr Flagging off of the 2500th electric loco SWARNA ABHA by Nitish Kumar, Minister of Railways
14 Nov 1st WAG-9 loco NAVYUG inaugurated by Nitish Kumar
21 Nov Inauguration of WAG-7 500 hp electric loco SAMARPAN by Shri Jyoti Basu, Chief Minister of West Bengal
1999 10 Jan 1st batch of 6 CLW-built 1000 hp traction motors for the WAG-9 series inaugurated by Shri K .Balakesari, member of staff
12 Apr Flagging off of NAVJYOTI by His Excellency the Governor of West Bengal, Mr. A.R. Kidwai
2000 25 Jan CLW celebrates 50 years of service
24 Feb 1st CLW-built 3-phase 6 FXA-7059 traction motor for the WAP-5 series inaugurated.
10 May NAVKIRAN, the first WAP-7 locomotive, rolled out of CLW.
17 May NAVODIT, the first WAP-5 locomotive, rolled out of CLW.
30 June A first day cover commemorating CLW's golden jubilee is released by Shri M.K. Banerjee, Post Master General for Kolkata
30 June NAVSHAKTI, the first WAG-9H locomotive, rolled out of CLW.
18 Nov Commissioning of a new facility for polyurethane painting of electric locomotives with grit blasting and paint-drying oven facilities
2001 12 Feb NAVBHARATI, the second WAP-7 locomotive, flagged off by Minister of Railways, Ms. Mamata Banerjee
16 Apr H.E. Viren J. Shah, Governor of West Bengal, was the chief guest at the 46th Railway Week function, and also flagged off the WAG-9 loco NAVASHA
31 May NAVJAGRAN, a WAP-5 locomotive, flagged off by the Honourable MOSR (D) Shri Digvijay Singh
2002 26 Apr ISO-14001 certification awarded to CLW by IRQS
2003 6 Apr NAVCHETAK, a WAP-7 locomotive, flagged off by the Honourable MOSR(A) Shri A.K. Murti
2-3 Aug NAVGHANSHAKTI, a WAG-9 locomotive, flagged off by ML/RB, Shri S.C. Gupta.
25 Sep ISO-9001-2000 certification awarded to CLW for its quality management system
28 Oct Nitish Kumar inaugurated a book published by CLW entitled STORY OF CLW, written by Shri R. K. Vir, Ex-GM/CLW at the Railway Board, New Delhi
2004 10 Jan NAVGATI, a WAP-7 locomotive, flagged off by Addl. ML/RB
29 Mar YUGANTAR, a WAP-4 locomotive, flagged off by GM/CLW
2005 Feb Manufacturing of cast steel bogie frames for the WDS-4 series begins by the steel foundry
2006 9 Jun CLW is conferred with the Golden Peacock Award for Environment Management by the World Environment Foundation
29 Jul WAG-9 & WAG-9H series locomotives with Satellite Remote Diagnosis System, Dr. Silver, inaugurated by Shri Laloo Prasad, Minister of Railways
6 Sep CLW awarded the Safety Innovation Award 2006 by the Institute of Engineers
2007 23 Mar Flagging off of the 100th WAG-9 loco NAVPRAGATI
31 Mar 1st loco for 2007-08 inaugurated
31 Mar 1041st traction motor produced for the year 2006-07
2008 25 May CLW website launched
11 Jul CLW adopts ORACLE-based financial applications
2009 26 Jan CLW enters its diamond jubilee year
30 Sep CLW is awarded the Safety Innovation Award 2009 by the Institute of Engineers
2010 4 Jan CLW hosted the 66th All-India Railway Football Championship knock-out round in Chittaranjan
16 Apr Inauguration of 2nd IGBT-based WAG-9i locomotive
1 May CLW wins the gold medal in the 30th All-India Archery Competition
3 Jun Indian Railways' first Head-on Generation (HOG) scheme loco produced at CLW
4 Oct Inauguration of CLW's first fully IGBT-based three-phase locomotive
19 Nov All-India Railway Bridge Championship held in Chittaranjan
14- 27 Nov CLW took part in the India International Trade Fair (IITF) 2010 held in New Delhi
2011 1 Feb Flagging off of the first three-phase loco fitted with an AC cab produced by CLW
25 Feb Visit by Japanese delegation to CLW
30 Mar Visit by Member Electrical/Railway Board to CLW
18 Nov Visit by Member Electrical/Railway Board to CLW
15 Dec 13th All-India Railway Archery Championship held at CLW
2012 5-12 Feb All-Indian Inter-Railways Football Championship held at CLW
11 Jul Record production of electric locomotives in CLW (258 produced)
11 Jul 3-phase locomotive equipped with IGBT-based propulsion system and TCN-compliant VCU produced
19 Jul Visit of Member Electrical/Railway Board to CLW
2013 5 Mar 2012-13 All-India Railway Bridge Championship held in Chittaranjan
31 Mar Record production of electric locomotives in CLW (270 produced)
Mar Best ever first-quarter production performance
24 Jun Inauguration of ventilator machine at KG Hospital
17 Jul Inauguration of new CNC vertical torret lathe Machine
17 Jul Inauguration of new auto-analyzer machine at KG Hospital
14 Aug Production and flagging off of the 100th locomotive of 2013-14
9 Sep Visit by Member Electrical/Railway Board to CLW
18 Dec All-India Railway Archery Championship held at CLW
2014 1 Mar Visit by Addl. Member Electrical/Railway Board to CLW
5 Apr Visit by Adviser of Railway Stores/Railway Board to CLW
11 Apr Inauguration and flagging of the first locomotive of 2014, WAG-7 (28667)
22 Apr Visit by Member Engineering/Railway Board to CLW
18 Jul Visit by Member Electrical/Railway Board to CLW
11-20 Oct CLW archers won the bronze medal at the 70-meter team event in the 35th Senior National Archery Championships, held in New Delhi
2015 28-31 Jan West Bengal State Ranking Junior Badminton Tournament at CLW.
21 Feb Visit by Addl. Member Railway Stores (AMRS)/Railway Board to CLW
20 Mar Inauguration of new stores shed at CLW
5 May CLW awarded OHSAS 18001 certification by M/s Certification Services Pvt Ltd.
7 Aug Inauguration of last WAG-7 shell
10 Sep Visit by a delegation from the Raniganj Chamber of Commerce
2 Dec Visit by Member Electrical/Railway Board
6 Dec 47th All-India Railway Cross-country Championship held at CLW
28 Dec Visit of Financial Commissioner/Railway Board to CLW
2016 20 Jan Energy-efficient LED bulbs installed at CLW
27 Jan CLW staff receive the President's Medal
4 Mar Inauguration of new locomotive piping shed and cable harness section
8 Mar First locomotive produced at CLW's Electric Locomotive Assembly & Ancillary Unit (ELAAU), Dankuni, rolled out
1 Jul Visit by Member Electrical/Railway Board to CLW and inauguration of the 25th hotel load loco WAP-7 (30482)
2 Jul Visit by Member Electrical/Railway Board to ELAAU, Dankuni, and flagging off of the first loco of the 2016-17 year, WAG-9H (31751)  
25 Jul Member Mechanical/Railway Board and the former Official Secretary to the Govt. of India visit CLW, and the 750th WAG-9H freight locomotive (31763) was ceremonially flagged off
9 Sep Shri Rajen Gohain, Minister of State for Railways, dedicated the ELAAU to the nation at a remote video conference.
21 Oct IROCON 2016 - 17th CME & 10th Annual Conference of IROPA held at CLW
7 Nov 73rd All-India Railway Football Championship knock-out round held at CLW
2017 28 Jan CLW's Cultural Association organised the Hindustani Sangeet Samagam
2-4 Mar Inter-Railway Cultural Music competition held at CLW
25 Mar Inauguration of Bulk Messaging System
28 Apr The 700th IGBT technology-based electric loco WAG-9H (31871) was ceremonially flagged off by Shri Ghanshyam Singh, Member Traction/Railway Board and former Official Secretary to the Govt. of India during his visit to CLW
20 May 900th WAG-9H freight loco (31900) flagged off by Shri Rajen Gohain, Minister of State for Railways
1 Jun Inauguration of the water closet system in a WAG-9H loco by Shri V.P. Pathak, GM, CLW
27 Nov CLW became the first production unit of Indian Railways to join the Integrated Material Management System (IMMS) platform, which was formally inaugurated by Shri V.P. Pathak, G.M., on 27 November 2017
13 Dec Visit by Shri Ghanshyam Singh to CLW, and the flagging off of WAG-9H (32101)
27 Dec Visit by DG/RS Shri A.K.Goel
2018 16 Jan ISO 50001 awarded to CLW
6 Mar First conversion of the diesel loco WAGC-3-001 by CLW
7 Mar The 300th loco WAG-9H (32092) from DKAE unit flagged off
8 Mar All-Women Employees Cell created in CLW's traction motors shop on International Women's Day
21 Mar CLW surpasses its target by sending off its 325th electric loco of 2017-18 before the closure of the financial year
1 Apr CLW produces a record 350 electric locomotives in the 2017-18 year
19  Apr CLW receives Best Production Unit Shield award from the Railways Minister
24 Oct CLW produces its first WAP-5 loco with an aerodynamic design capable of acheiving 200km/h
25 Dec 9800th loco inaugurated
2019 7-9 Feb 9th All-India Railway Archery Championship 2018-19 organised at CLW
19 Mar CLW Football Team win the 75th All-India Railway Football Championship held at Maligaon
31 Mar 402nd loco from CLW flagged off by Shri Ghanshyam Singh, MTR and Shri Praveen Kumar Mishra, GM, CLW
31 Mar First 9000 hp loco from CLW flagged off by Shri Ghanshyam Singh, MTR and Shri Praveen Kumar Mishra, GM, CLW
14 Jul CLW participated in an exhibition in connection with the 64th Railway Week National Awards
12 Aug 100th locomotive from ELAAU (Dankuni) inaugurated by CLW's General Manager
12 Aug Successful trial run of a WAP-7 loco at 180 km/h by CLW's Kota division.
23-25 Aug CLW participated in the 6th India International MSME Startup Expo & Summit 2019 at New Delhi
15 Oct 200th loco for the year 2019-20 rolled out in a record 158 days.
7-9 Nov 10th All-India Railway Archery (M&W) Championship organised at CLW
18 Dec CLW awarded second place in the NECA (National Energy Conservation Award) by BEE
21 Dec 300th loco for the year 2019-20 rolled out in a record 216 days.
2020 31 Jan 350th loco for the year 2019-20 rolled out in a record 250 days
1 Jan CLW produces 446 locos in the 2019 calendar year

Products

Key:

   Loco currently in production

Diesel locomotives
Name Wheel

Arr.

 Quantity

Built

 Built year(s) Power Current Status Preserved units Comments Image
WDS-4 C 27 1968-1969 600 HP In service 4 A few still in service
WDS-4A C 5 1968 660 HP Retired
WDS-4B C 450 1969 700 HP Retired
WDS-4C C 7 1976-78 700 HP Retired
WDS-4D C 120 1984-97 700 HP Retired
WDS-8 Bo-Bo 5 1979-1982 800 HP Retired
YDM-2 B-B 41 1986-90 700 Retired
ZDM-3 B-B 40 1970-82 700 In service
ZDM-4/4A 1-B-B-1 10/39 1975-77/1982-90 700 In service
ZDM-5 B-B 41 1989+ 450 In service
NDM-5 B-B 11 1987-89 450 In service

Electric locomotives
Name Wheel

Arr

 Quantity

Built

 Built year(s) Power Current Status Preserved units Comments Image
WAM-4 Co-Co 500 1970-1983 3850 HP Retired 6 (earmarked)
WAP-1 Co-Co 77 1980-1996 3900 HP In service 1 (earmarked)
WAP-3 Co-Co 9, all rebuilt from WAP-1 1987-1988 3900 HP Retired/In service as WAP-1
WAP-4 Co-Co 778 1993-2015 5350 HP In service
WAP-5 Bo-Bo 198 1995– present 6000 HP In service
WAP-6 Co-Co 16 1997 5350 HP Retired/In service as WAP-4
WAP-7 Co-Co 1070 2000– present 6350 HP In service
WAG-1 B-B 112 1963-1966 2930 HP Retired 1 unit
WAG-3 B-B 10 1965 3300 HP Retired
WAG-4 B-B 186 1966-1971 3590 HP Retired
WAG-5 Co-Co 1196 1978-1998 4360 HP In service 1 unit
WAG-7 Co-Co 1970 1992 5350 HP In service 1 (earmarked)
WAG-9 Bo-Bo 1848 1996–present 6125 HP In service
WCM-5 Co-Co 21 1961-1963 3700 HP Retired 1 unit
WCM-6 Co-Co 2 1995 5000 HP In service Converted to 25 kV AC operation
WCG-2 Co-Co 57 1970-1976 4200 HP Retired 2 units
WCAM-1 Co-Co 54 1975-1979
  • 2930 HP DC
  • 3640 HP AC
 Retired First mainline bi-current locomotive and the only Indian electric loco with reversed pantographs

Traction motors
  • 3-phase 6FRA6068 (for WAG-9 and WAP-7 units) and 6FXA 7059 (for WAP-5 units) traction motors have been manufactured indigenously by CLW since 1998 and 1999 respectively.
  • CLW also previously manufactured the Hitachi HS15250A traction motor for the WAG-7 and WAP-4 units; this production has since ceased.

See also

References
  1. "Chittaranjan Locomotive Works is now world's biggest locomotive producer". The Statesman. 2 April 2019. Retrieved 12 September 2019.
  2. "About Chittaranjan Locomotive Works". Chittaranjan Locomotive Works.
  3. "ESTIMATES COMMITTEE REPORT" (PDF). eparlib.nic.in. 1955. Retrieved 17 December 2020.
  4. "ESTIMATES COMMITTEE REPORT" (PDF). eparlib.nic.in. 1955. Retrieved 17 December 2020.
  5. "ESTIMATES COMMITTEE REPORT" (PDF). eparlib.nic.in. 1955. Retrieved 17 December 2020.
  6. "ESTIMATES COMMITTEE REPORT" (PDF). eparlib.nic.in. 1955. Retrieved 17 December 2020.
  7. "ESTIMATES COMMITTEE REPORT" (PDF). eparlib.nic.in. 1955. Retrieved 17 December 2020.

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