British Rail Class 334 Coradia Juniper | |
---|---|
In service | 3 April 2001 –present |
Manufacturer | Alstom |
Built at | Washwood Heath, Birmingham |
Family name | Coradia Juniper |
Replaced | Class 303 |
Constructed | 1999–2002 |
Refurbished |
|
Number built | 40 [1] |
Formation | 3 cars per unit: DMS-PTS-DMS [1] |
Fleet numbers | 334001–334040 |
Capacity | 183 seats [1] |
Owners | Eversholt Rail Group [1] |
Operators | ScotRail |
Specifications | |
Car body construction | Steel |
Train length | 61.96 m (203 ft 3 in) |
Car length | |
Width | 2.80 m (9 ft 2 in) |
Height | 3.77 m (12 ft 4 in) |
Doors | Double-leaf sliding plug (2 per side per car) |
Maximum speed | 90 mph (145 km/h) [1] |
Traction system | Alstom ONIX 800 IGBT |
Traction motors | 4 × 270 kW (362 hp) (2 per DMS car) |
Power output | 1,080 kW (1,448 hp) |
Acceleration | 0.62 m/s2 (2.0 ft/s2) max. [1] |
Electric system(s) | 25 kV 50 Hz AC overhead |
Current collector(s) | Pantograph |
UIC classification | 2′Bo′+2′2′+Bo′2′ |
Braking system(s) | Electro-pneumatic (disc), and regenerative [1] |
Safety system(s) | |
Coupling system | |
Multiple working | Within class |
Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
The British Rail Class 334 Coradia Juniper is a suburban electric multiple unit passenger train built by Alstom in Birmingham. They are part of Alstom's Coradia Juniper family of trains, along with Classes 458 and 460.
The trains are operated by ScotRail and mainly run on the North Clyde Line on Helensburgh Central - Edinburgh, Springburn - Milngavie and Airdrie - Balloch services. However, they can also sometimes be seen on the Argyle Line on Dalmuir/Milngavie to Whifflet/Motherwell/Larkhall/Cumbernauld services. They were ordered by SPT/ScotRail (when part of National Express) for outer-suburban services in Glasgow.
Their introduction saw the withdrawal of the last of Glasgow's venerable Class 303 "Blue Train" sets which had been in service since 1960. Although deliveries started to Strathclyde in 1999, the Class 334 did not enter passenger service until 2001 due to numerous teething problems (in common with other Juniper-based classes) and technical failures which plagued the new units upon their introduction.
SPT ordered 38 units, but the technical problems led to an additional two units being built as a goodwill gesture.[ citation needed ]
All units are owned by Eversholt Rail Group. ScotRail leased a total of 40 units which can be seen in use daily across the SPT electric network. On the maiden run of the units, 334010 and 334020 ran to Gourock. The units initially ran on the Ayrshire and Inverclyde lines, but became a common sight on the Argyle and North Clyde lines.
From its introduction, the Class 334 operated on the Ayrshire Coast Line, Inverclyde Line, North Clyde Line and Argyle Line, but by June 2011 the class had been largely replaced on the Ayrshire and Inverclyde lines by the Class 380, with only occasional units seen on those routes.
In September 2008, the Scottish Government's agency Transport Scotland announced that all ScotRail trains (including those from the Strathclyde Partnership for Transport) would be eventually repainted in a new, blue livery with white Saltire markings on the carriage ends. Class 334 re-livery began in November 2010 in preparation for the Airdrie to Bathgate reopening. [3]
On 24 August 2011, ScotRail announced plans to refurbish all the fleet, with the project expected to start in November 2011 and take two years to complete. [4] [5] 334020 was the first unit to be refurbished at Kilmarnock's Brodie Rail Works from 3 February 2012 to 2 May 2012. The last unit to be refurbished was 334006, which left Brodie Works on 8 November 2014.[ citation needed ]
From early 2015, Eversholt commissioned Alstom to perform an extensive £36.1m overhaul of the entire fleet to improve passenger conditions, which included the retrofitting of full air conditioning, at-seat charging points, provision for wi-fi, passenger counting equipment, cycle spaces, LED lighting and CCTV in the saloons, and an upgraded CCTV system for driver-only operation. [6] [7] [8] Improvements were also made to the reliability of the passenger doors, and the original Tightlock couplings were replaced with Scharfenberg-type automatic couplers manufactured by Voith, allowing Class 334 units to rescue and be rescued by Class 380 units. The overhaul process was completed in 2017.
On 22 June 2021 during Pride Month in the United Kingdom, a Class 334 was unveiled with progress flag colours. ScotRail stated that the livery would remain in place until 2029, after which the metalwork underneath would require repainting. [9]
In 2023 Alstom was awarded a contract by Eversholt Rail to overhaul the Class 334 fleet. The work, with a contract value of £12 million, will be carried out at Polmadie Depot and is planned to start in January 2024. [10] [11]
Class | Operator | Qty. | Year built | Cars per unit | Unit nos. |
---|---|---|---|---|---|
334 | ScotRail | 40 | 1999–2002 | 3 | 334001–334040 |
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