Indian Railways (reporting mark IR / भा. रे) is an Indian state-owned enterprise, owned and
operated by the Government of India through the Ministry of Railways. It is one of the world's largest railway networks comprising 115,000 km (71,000 mi) of track over a route of 65,436 km (40,660 mi) and 7,172 stations.
Railways were first introduced to India in 1853 from Bombay to Thane. In 1951 the systems were nationalised as one unit, the Indian Railways, becoming one of the largest networks in the world. IR operates both long distance and suburban rail systems on a multi-gauge network of broad, metre and narrow gauges. It also owns locomotive and coach production facilities at several places in India and are assigned codes identifying their gauge, kind of power and type of operation. Its operations over twenty nine states and seven union territories and also provides limited international services to Nepal, Bangladesh and Pakistan.
Indian Railways is the world's ninth largest commercial or utility employer, by number of employees, with over 1.307 million employees. As for rolling stock, IR holds over 239,281 Freight Wagons, 62,924 Passenger Coaches and 9,013 Locomotives (43 steam, 5,345 diesel and 4,568 electric locomotives).
Since 1960, almost all electrified sections on IR use 25,000 Volt AC traction through overhead catenary delivery.

History:

The history of rail transport in India began in the mid-nineteenth century. The core of the pressure for building Railways in India came from London. In 1848, there was not a single kilometre of railway line in India. A British engineer, Robert Maitland Brereton, was responsible for the expansion of the railways from 1857 onwards. The Allahabad-Jabalpur branch line of the East Indian Railway had been opened in June 1867. Brereton was responsible for linking this with the Great Indian Peninsula Railway, resulting in a combined network of 6,400 km (4,000 mi). Hence it became possible to travel directly from Bombay to Calcutta. This route was officially opened on 7 March 1870 and it was part of the inspiration for French writer Jules Verne's book Around the World in Eighty Days. At the opening ceremony, the Viceroy Lord Mayo concluded that “it was thought desirable that, if possible, at the earliest possible moment, the whole country should be covered with a network of lines in a uniform system”.
By 1875, about £95 million were invested by British companies in India guaranteed railways. By 1880 the network had a route mileage of about 14,500 km (9,000 mi), mostly radiating inward from the three major port cities of Bombay, Madras and Calcutta. By 1895, India had started building its own locomotives, and in 1896, sent engineers and locomotives to help build the Uganda Railways.
In 1900, the GIPR became a government owned company. The network spread to the modern day states of Ahom Kingdom, Rajputhana and Madras Presidency and soon various autonomous kingdoms began to have their own rail systems. In 1905, an early Railway Board was constituted, but the powers were formally vested under Lord Curzon. It served under the Department of Commerce and Industry and had a government railway official serving as chairman, and a railway manager from England and an agent of one of the company railways as the other two members. For the first time in its history, the Railways began to make a profit.
In 1907 almost all the rail companies were taken over by the government. The following year, the first electric locomotive made its appearance. With the arrival of World War I, the railways were used to meet the needs of the British outside India. With the end of the war, the railways were in a state of disrepair and collapse.
In 1920, with the network having expanded to 61,220 km (38,040 mi), a need for central management was mooted by Sir William Acworth. Based on the East India Railway Committee chaired by Acworth, the government took over the management of the Railways and detached the finances of the Railways from other governmental revenues.
The period between 1920 and 1929, was a period of economic boom; there were 41,000 mi (66,000 km) of railway lines serving the country; the railways represented a capital value of some 687 million sterling; and they carried over 620 million passengers and approximately 90 million tons of goods each year. Following the Great Depression, the railways suffered economically for the next eight years. The Second World War severely crippled the railways. Starting 1939, about 40% of the rolling stock including locomotives and coaches was taken to the Middle East, the railways workshops were converted to ammunitions workshops and many railway tracks were dismantled to help the Allies in the war. By 1946, all rail systems had been taken over by the government.

Railway Zones:
Indian Railways is divided into several zones, which are further sub-divided into divisions. The number of zones in Indian Railways increased from six to eight in 1951, nine in 1952 and sixteen in 2003 and now seventeen.Each zonal railway is made up of a certain number of divisions, each having a divisional headquarters. There are a total of sixty-eight divisions.
Each of the seventeen zones is headed by a general manager who reports directly to the Railway Board. The zones are further divided into divisions under the control of divisional railway managers (DRM). The divisional officers of engineering, mechanical, electrical, signal and telecommunication, accounts, personnel, operating, commercial, security and safety branches report to the respective Divisional Manager and are in charge of operation and maintenance of assets. Further down the hierarchy tree are the station masters who control individual stations and the train movement through the track territory under their stations' administration.

Production Units:

Indian Railways manufactures much of its rolling stock and heavy engineering components at its six manufacturing plants, called Production Units, which are managed directly by the Ministry. Popular rolling stock builders such as CLW and DLW for electric and diesel locomotives; ICF and RCF for passenger coaches are Production Units of Indian Railways. Over the years, Indian Railways has not only achieved self-sufficiency in production of rolling stock in the country but also exported rolling stock to other countries. Each of these production units is headed by a general manager, who also reports directly to the Railway Board. The production units are:- 




Other Subsidiaries:
There also exist independent organisations under the control of the Railway Board for electrificationmodernisationresearch and design and training of officers, each of which is headed by an officer of the rank of general manager. A number of Public Sector Undertakings, which perform railway-related functions ranging from consultancy to ticketing, are also under the administrative control of the Ministry of railways.
There are fourteen public undertakings under the administrative control of the Ministry of Railways.
·         Bharat Wagon and Engineering Co. Ltd. (BWEL)
·         Centre for Railway Information Systems (CRIS)
·         Container Corporation of India Limited (CONCOR)
·         Dedicated Freight Corridor Corporation of India Limited (DFCCIL)
·         Indian Railway Catering and Tourism Corporation Limited (IRCTC)
·         Indian Railway Construction (IRCON) International Limited
·         Indian Railway Finance Corporation Limited (IRFC)
·         Konkan Railway Corporation Limited (KRCL)
·         Mumbai Railway Vikas Corporation (MRVC)
·         Railtel Corporation of India Limited (Rail Tel)
·         Rail India Technical and Economic Services Limited (RITES)
·         Rail Vikas Nigam Limited (RVNL)
·         High Speed Rail Corporation of India (HSRC)
·         Burn Standard Company
·         Braithwaite and Co. Ltd
Delhi Metro Rail Corporation Limited (DMRC), that has constructed and operates Delhi Metro network, is an independent organisation not connected to the Indian Railways. Similar metro rail corporations in other cities (except Kolkata Metro in Kolkata) are not connected to the Indian Railways.

Rolling Stock

Locomotives:
Locomotives in India consist of electric and diesel locomotives. Biodiesel locomotives are also being used on experimental basis. Steam locomotives are no longer used, except in heritage trains. In Indialocomotives are classified according to their track gauge, motive power, the work they are suited for and their power or model number. The class name includes this information about the locomotive. It comprises 4 or 5 letters. The first letter denotes the track gauge. The second letter denotes their motive power (Diesel or Alternating - on Electric) and the third letter denotes the kind of traffic for which they are suited (goods, passenger, Multi or shunting). The fourth letter used to denote locomotives' chronological model number. However, from 2002 a new classification scheme has been adopted. Under this system, for newer diesel locomotives, the fourth letter will denote their horsepower range. Electric locomotives don't come under this scheme and even all diesel locos are not covered. For them this letter denotes their model number as usual.
A locomotive may sometimes have a fifth letter in its name which generally denotes a technical variant or subclass or subtype. This fifth letter indicates some smaller variation in the basic model or series, perhaps different motors, or a different manufacturer. With the new scheme for classifying diesel locomotives (as mentioned above) the fifth item is a letter that further refines the horsepower indication in 100 hp increments: 'A' for 100 hp, 'B' for 200 hp, 'C' for 300 hp, etc. So in this scheme, a WDM-3A refers to a 3100 hp loco, while a WDM-3D would be a 3400 hp loco and WDM-3F would be 3600 hp loco.
Note: This classification system does not apply to steam locomotives in India as they have become non-functional now. They retained their original class names such as M class or WP class.

Goods wagons or freight cars:
The number of freight car or goods wagons was 205,596 on 31 March 1951 and reached the maximum number 405,183 on 31 March 1980 after which it started declining and was 239,321 on 31 March 2012. The number is far less than the requirement and the Indian Railways keeps losing freight traffic to road. Indian Railways carried 93 million tonnes of goods in 1950–51 and it increased to 1010 million tonnes in 2012–13.
However, its share in goods traffic is much lower than road traffic. In 1951, its share was 65% and the share of road was 35%. Now the shares have been reversed and the share of railways has declined to 30% and the share of road has increased to 70%.

Passenger coaches:
Indian Railways has several types of passenger coaches.
Electric Multiple Unit (EMU) coaches are used for suburban traffic in large cities – mainly Mumbai, Chennai, Delhi, Kolkata, Pune, Hyderabad and Bangalore. These coaches numbered 7,793 on 31 March 2012. They have second class and first class seating accommodation.

Freight

Indian Railways earns about 70% of its revenues from freight traffic (Rs. 686.2 billion from freight and Rs. 304.6 billion from passengers in 2011–12). Most of its profits come from transporting freight, and this makes up for losses on passenger traffic. It deliberately keeps its passenger fares low and cross-subsidises the loss-making passenger traffic with the profit-making freight traffic.

Since the 1990s, Indian Railways has stopped single-wagon consignments and provides only full rake freight trains.

Track and gauge
Indian railways uses four gauges, the 1,676 mm (5 ft 6 in) broad gauge which is wider than the 1,435 mm (4 ft 8 12 in) standard gauge; the 1,000 mm (3 ft 3 38 in) metre gauge; and two narrow gauges762 mm (2 ft 6 in) and 610 mm (2 ft). Track sections are rated for speeds ranging from 75 to 160 km/h (47 to 99 mph).
The total length of track used by Indian Railways is about 115,000 km (71,000 mi) while the total route length of the network is 65,000 km (40,000 mi). About 23,541 km (14,628 mi) or 36% of the route-kilometre was electrified as on 31 March 2013.
Broad gauge is the predominant gauge used by Indian Railways. Indian broad gauge—1,676 mm (5 ft 6 in)—is the most widely used gauge in India with 105,000 km (65,000 mi) of track length (91% of entire track length of all the gauges) and 56,000 km (35,000 mi) of route-kilometre (86% of entire route-kilometre of all the gauges).
In some regions with less traffic, the metre gauge (1,000 mm (3 ft 3 38 in)) is common, although the Unigauge project is in progress to convertall tracks to broad gauge. The metre gauge has about 8,000 km (5,000 mi) of track length (7% of entire track length of all the gauges) and 7,000 km (4,300 mi) of route-kilometre (10% of entire route-kilometre of all the gauges).
The Narrow gauges are present on a few routes, lying in hilly terrains and in some erstwhile private railways (on cost considerations), which are usually difficult to convert to broad gauge. Narrow gauges have 2,000 route-kilometre. The Kalka-Shimla Railway, the Kangra Valley Railway and the Darjeeling Himalayan Railway are three notable hill lines that use narrow gauge, but the Nilgiri Mountain Railway is a metre gauge track. These four rail lines will not be converted under the Unigauge project.
The share of broad gauge in the total route-kilometre has been steadily rising, increasing from 47% (25,258 route-km) in 1951 to 86% in 2012 whereas the share of metre gauge has declined from 45% (24,185 route-km) to 10% in the same period and the share of narrow gauges has decreased from 8% to 3%. About 21,500 route-km of Indian railways is electrified.
Sleepers (ties) are made up of prestressed concrete, or steel or cast iron posts, though teak sleepers are still in use on a few older lines. The prestressed concrete sleeper is in wide use today. Metal sleepers were extensively used before the advent of concrete sleepers. Indian Railways divides the country into four zones on the basis of the range of track temperature. The greatest temperature variations occur in Rajasthan.

Railway Links to adjacent Countries:

Existing rail links:
·         Nepal – Break-of-gauge – Gauge conversion under uni-gauge project.
·         Pakistan – same Broad Gauge. Thar Express to Karachi and the more famous Samjhauta Express international train from Lahore, Pakistan to Amritsar (Attari).
·         Bangladesh – Same Broad Gauge. The Maitri express between Dhaka and Kolkata started in April 2008 using the Gede-Darsana route, in addition to a Freight Train service from Singhabad and Petrapole in India to Rohanpur and Benapole in Bangladesh. A second passenger link between Agartala, India and Akhaura Upazila, Bangladesh was approved by the Government of Bangladesh and India in September 2011.

Under construction / Proposed links:
·         Bhutan – railways under construction – Same gauge
·         Myanmar – Manipur to Myanmar (under construction)
·         Vietnam – On 9 April 2010, Former Union Minister of IndiaShashi Tharoor announced that the central government is considering a rail link from Manipur to Vietnam via Myanmar.
·         Thailand – possible if Burma Railway is rebuilt.

UNESCO World Heritage Sites

There are two UNESCO World Heritage Sites on Indian Railways. – The Chatrapati Shivaji Terminus and the Mountain Railways of India. The latter consists of three separate railway lines located in different parts of India:
·         Nilgiri Mountain Railway, a 1,000 mm (3 ft 3 38 in) metre gauge railway in the Nilgiri Hills in Tamil Nadu.
·         Kalka-Shimla Railway, a narrow gauge railway in the Shivalik mountains in Himachal Pradesh. In 2003 the railway was featured in the Guinness Book of World Records for offering the steepest rise in altitude in the space of 96 kilometer.




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A Rail Enthusiast. Born and brought up in Calcutta. Have interests in rolling stock and Locomotives and their control techniques. Also love to collect information and trivia on our Indian Railway network... Have worked with ABB, Siemens, Bombardier Transportation and Larsen & Toubro as an intern. I majored in Electronics and Communications Engineering as my undergraduate degree on 2nd August 2016.