NSB BM92
Encyclopedia
NSB Class 92 is a class of 15 diesel multiple unit
Diesel multiple unit
A diesel multiple unit or DMU is a multiple unit train consisting of multiple carriages powered by one or more on-board diesel engines. They may also be referred to as a railcar or railmotor, depending on country.-Design:...

s built by Duewag
DUEWAG
The DUEWAG AG was one of Germany's major manufacturers for rail vehicles. The business was sold in 1999 to Siemens transportation.- History :The company was founded in 1898 as Waggonfabrik Uerdingen AG in Uerdingen...

 for the Norwegian State Railways (NSB). The two-car trains were delivered in 1984 and 1985, and put into service on the Røros Line and southern part of the Nordland Line—which later became the Trøndelag Commuter Rail. Later, they also entered service on the Meråker Line as part of the international Mittnabotåget
Mittnabotåget
Mittnabotåget is a regional train service connecting Trondheim in Norway with Sundsvall in Sweden. It includes trains operated by Veolia Transport on the Mittlinjen between Sundsvall and Östersund in Sweden, and Norges Statsbaner’s cross-border Nabotåget services from Östersund on to Trondheim in...

 service. Previously, the trains were also used on the Solør Line, further north on the Nordland Line and on the now electrified
Railway electrification system
A railway electrification system supplies electrical energy to railway locomotives and multiple units as well as trams so that they can operate without having an on-board prime mover. There are several different electrification systems in use throughout the world...

 Arendal Line
Arendal Line
The Arendal Line is a long railway line between Arendal and Simonstad in Norway. At Nelaug, north of Arendal, the line intersects with the Sørland Line. The southern section is electrified and provides a feeder passenger service. The line originally ran north from Arendal to Treungen and the...

. In 2000, a unit was involved in the Åsta accident
Åsta accident
The Åsta accident was a railway accident that occurred at 13:12:25 on 4 January 2000 at Åsta in Åmot, south of Rena in Østerdalen, Norway. A train from Trondheim collided with a local train from Hamar on Rørosbanen resulting in an explosive fire...

, which killed 19 people. The trains were refurbished in 2005 and 2006, and NSB plans to replace them by around 2019. Each twin unit seats 168 people, is 49.45 metres (162.2 ft) long and weighs 92 tonnes (90.5 LT). The front car is powered with two electric motor
Electric motor
An electric motor converts electrical energy into mechanical energy.Most electric motors operate through the interaction of magnetic fields and current-carrying conductors to generate force...

s, giving a power output of 714 kW and a maximum speed of 140 kilometres per hour (87 mph).

Specifications

The units were built by Duewag in 1984 and 1985 and consist of two cars, giving a seating capacity of 168 people. A double-unit is 49.45 metres (162.2 ft) long and weighs 92 tonnes (90.5 LT), of which the motor car weighs 58 tonnes (57.1 LT). Only the one car is powered, and is equipped with a Daimler-Benz
Daimler-Benz
Daimler-Benz AG was a German manufacturer of automobiles, motor vehicles, and internal combustion engines; founded in 1926. An Agreement of Mutual Interest - which was valid until year 2000 - was signed on 1 May 1924 between Karl Benz's Benz & Cie., and Daimler Motoren Gesellschaft, which had...

 OM424A prime mover
Prime mover (locomotive)
In engineering, a prime mover is an engine that converts fuel to useful work. In locomotives, the prime mover is thus the source of power for its propulsion. The term is generally used when discussing any locomotive powered by an internal combustion engine...

 which powers two electric motor
Electric motor
An electric motor converts electrical energy into mechanical energy.Most electric motors operate through the interaction of magnetic fields and current-carrying conductors to generate force...

s, giving a power output of 714 kW. The trains are capable of 140 kilometres per hour (87 mph) and are equipped with vending machine
Vending machine
A vending machine is a machine which dispenses items such as snacks, beverages, alcohol, cigarettes, lottery tickets, consumer products and even gold and gems to customers automatically, after the customer inserts currency or credit into the machine....

s. The trailer units were delivered with three different layouts: with standard seating, with seating and a freight room, and with seating and a freight and post room. The latter was planned used on the Røros Line, but after delivery, the railway postal service was closed.

History

By the 1980s, the 40-year-old Class 86
NSB Class 86
NSB Class 86 is a class of diesel-hydraulic multiple units built by Strømmens Værksted for the Norwegian State Railways . Thirty-eight motor cars and thirty-one trailers were built between 1937 and 1954, split between six subtypes designated a through f. Class 91 was a further delivery of ten...

 and Class 91 trains were in need of replacement. NSB described them as unable to satisfy demands in terms of economy, comfort or speed. Class 92 was bought to take over all passenger transport on the Røros Line and on the Nordland Line south of Grong
Grong
is a municipality in Nord-Trøndelag county, Norway. It is part of the Namdalen region. The administrative centre of the municipality is the village of Medjå. Other villages in the municipality include Bergsmoen, Formofoss, Gartland, and Harran....

. The 15 two-car units cost NOK 200 million and were built by Duewag in Germany.

When introduced, the schedules were also changed to cut a number of the smallest intermediate stops. Class 92 has considerably better curve speed, and is able to operate at least at 80 km/h (49.7 mph) through all curves on the main lines and on the steepest sections. It also features better acceleration and deceleration than its predecessors. With the change of schedules from 2 June 1985, this resulted in travel time between Røros
Røros
is a town and municipality in Sør-Trøndelag county, Norway. It is part of the Gauldalen region. The administrative centre of the municipality is the town of Røros. Other villages include Brekken, Glåmos, Feragen, Galåa, and Hitterdalen....

 and Hamar
Hamar
is a town and municipality in Hedmark county, Norway. It is part of the traditional region of Hedmarken. The administrative centre of the municipality is the town of Hamar. The municipality of Hamar was separated from Vang as a town and municipality of its own in 1849...

 being reduced by one hour, a reduction of 25 minutes between Trondheim
Trondheim
Trondheim , historically, Nidaros and Trondhjem, is a city and municipality in Sør-Trøndelag county, Norway. With a population of 173,486, it is the third most populous municipality and city in the country, although the fourth largest metropolitan area. It is the administrative centre of...

 and Steinkjer
Steinkjer
is a town and a municipality in Nord-Trøndelag county, Norway. It is part of the Innherad region. The administrative centre of the municipality is the town of Steinkjer, which is also the seat of the county government...

, and a reduction of 50 minutes between Trondheim and Grong. At the same time, the schedules were changed for optimal correspondence, such as with the night train in Trondheim and departures from Trondheim Airport, Værnes
Trondheim Airport, Værnes
Trondheim Airport, Værnes is an international airport located in Stjørdal, east of Trondheim, Norway. Operated by the state-owned Avinor, it shares facilities with Værnes Air Station of the Royal Norwegian Air Force. In 2010, the airport had 3,521,734 passengers and 55,747 air movements,...

. The Røros Line also received a single daily through train from Røros to Oslo
Oslo
Oslo is a municipality, as well as the capital and most populous city in Norway. As a municipality , it was established on 1 January 1838. Founded around 1048 by King Harald III of Norway, the city was largely destroyed by fire in 1624. The city was moved under the reign of Denmark–Norway's King...

.

From June 1986, the class was also put into the morning train from Mo i Rana
Mo i Rana
Mo i Rana is a town in the municipality of Rana, Nordland, Norway, located just south of the Arctic Circle and in the region Helgeland. The town is called "Mo i Rana" to distinquish it from other places named Mo - most notably the town of Mosjøen, also in Helgeland - though locally the town is...

 to Trondheim and the return trip in the evening. The new service increased the average speed, including stops, to 80 kilometres per hour (49.7 mph) and a maximum speed on straight section of 130 kilometres per hour (80.8 mph), as well as 10 percent higher speeds in curves. The service allowed passengers taking the morning train from Oslo to arrive in Mo i Rana in the evening. The class was also used on the Arendal Line and the Solør Line. It remained in used on the Arendal Line until 1995, when the line was electrified
Railway electrification system
A railway electrification system supplies electrical energy to railway locomotives and multiple units as well as trams so that they can operate without having an on-board prime mover. There are several different electrification systems in use throughout the world...

.

In 1993, NSB announced that the traffic around Trondheim would become the Trøndelag Commuter Rail, which would take over most of the Class 92 trains. The service started on 1 September 1993. The changes to the schedule involved almost a doubling of the number of departures, particularly between Trondheim and Stjørdal, where a one-hour headway
Headway
Headway is a measurement of the distance/time between vehicles in a transit system. The precise definition varies depending on the application, but it is most commonly measured as the distance from the tip of one vehicle to the tip of the next one behind it, expressed as the time it will take for...

 was introduced. The service from Trondheim to Steinkjer had ten daily round trips. While local trains had existed previously north of Trondheim, the services south to Oppdal
Oppdal
is a village and municipality in Sør-Trøndelag county, Norway. It is part of the Dovre region. The administrative centre of the municipality is the village of Oppdal. Other villages in the municipality include Lønset, Vognillan, Fagerhaug, and Holan...

 were all new in an area which was previously only served by intercity and night trains. The initial services consisted of four services from Trondheim—northwards along the Nordland Line to Steinkjer, east along the Meråker Line to Storlien, south along the Dovre Line to Oppdal and south-east along the Røros Line to Tynset.
On 4 January 2000, a Class 92 train was damaged beyond repair in the Åsta accident
Åsta accident
The Åsta accident was a railway accident that occurred at 13:12:25 on 4 January 2000 at Åsta in Åmot, south of Rena in Østerdalen, Norway. A train from Trondheim collided with a local train from Hamar on Rørosbanen resulting in an explosive fire...

 near Åsta Station on the Røros Line. Nineteen people were killed in the accident. From 7 January 2001, NSB made several major changes to the commuter rail. A fixed, hourly headway was introduced on the trains from Steinkjer to Trondheim; including extra rush-hour trains from Lerkendal to Stjørdal, giving 23 departures per day in each direction. South of Trondheim, the service was rerouted to terminate at Lerkendal. Part of the reason for the expansion was that the delivery of the new Class 93 trains for regional services freed up more Class 92 units. This also allowed NSB to operate some of services with double unit (four-car) trains in rush-hour.

From 22 September 2002, NSB and the Public Transportation Authority in Jämtlands County started a cooperation that involved two daily round trips with an Class 92 trains between Trondheim and Östersund
Östersund
Östersund is an urban area in Jämtland in the middle of Sweden. It is the seat of Östersund Municipality and the capital of Jämtland County. Östersund is located at the shores of Sweden's fifth largest lake, Storsjön, opposite the island Frösön, and is the only city in Jämtland. Östersund is the...

 in Sweden, on the Meråker Line and Central Line. Branded as Mittnabotåget
Mittnabotåget
Mittnabotåget is a regional train service connecting Trondheim in Norway with Sundsvall in Sweden. It includes trains operated by Veolia Transport on the Mittlinjen between Sundsvall and Östersund in Sweden, and Norges Statsbaner’s cross-border Nabotåget services from Östersund on to Trondheim in...

, the trains were manned by NSB on the Norwegian side of the border, and by BK Tåg
BK Tåg
BK Tåg AB, trading as BK Tåg, is a former Swedish railway company. It operated passenger trains on public service obligation with various counties and the ministry. Owned by Karlsongruppen, it filed for bankruptcy in March 2005....

 staff on the Swedish side, after the latter had won a public service obligation
Public Service Obligation
In transport, public service obligation or PSO is an arrangement in which a governing body or other authority offers an auction for subsidies, permit the winning company a monopoly to operate a specified service of public transport for a specified period of time for the given subsidy...

contract with the Swedish authority.

The class was upgraded in 2005 and 2006, which included given them a new interior and a new paint scheme. NSB has stated that the last year the Class 92 will be in use is 2019. There are plans to electrify the Nordland Line from Trondheim to Steinkjer, as well as the Meråker Line. Once these lines are electrified, the Class 92 can be retired, although no date has yet been set.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK