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Sri Lanka Railways S12

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Sri Lanka Railways S12
Class S12 No. 925
Stock typeDiesel-Electric Multiple Unit
ManufacturerCSR
Built atSifang, China
Family nameD 22 (KV Set)
Constructed2012
Number built22 train sets
Number in service22
SuccessorSri Lanka Railways S14
FormationMCG + 3xTC + 3xSC + 1xFC + 1xRC + MCG (Main Line Set), MCG + 5xTC + DDCG (KV Set)
Capacity44 (AFC) + 66*3 (TC) + 52 (TCBU) + 44*3 (SC) = 426
OperatorsSri Lanka Railways
Specifications
Car body constructionStainless steel
Car length50 ft (15.24 m)
Maximum speed100 km/h (62 mph) (De-rated 80 km/h or 50 mph)
Prime mover(s)MTU 12V4000R41 Two engines per unit in Main Line Set
Engine typeV12
Power output1950 hp (1450 kW)
TransmissionDiesel-electric
Braking system(s)Air (Knorr-Bremse), Dynamic
Coupling systemAutomatic (dual)
Track gauge5 ft 6 in (1,676 mm)

Sri Lanka Railways S12 is a class of Diesel-electric multiple unit (DEMU) built for Sri Lanka Railways by China's CSR Corporation. The first batch arrived in Sri Lanka in August 2012. They were built to replace locomotive-hauled passenger trains. Seven of the S12 DMUs were ordered to strengthen long-distance travel on the Main line from Colombo to Badulla. Four of S12s were built to serve the Kelani Valley Line. The remaining set was designed as a luxury train.[1]

History

[edit]

The S12 DEMUs were meant to improve services on the Main Line and the Kelani Valley Line. The steep slopes on the up-country portion of the Main Line is difficult to operate. Prior to the S12, only a few classes of locomotives were capable of operating this line. As DEMUs started to replace locomotive-operated trains on other lines, the up-country Main Line could not be operated by DEMUs. The S12 is the first DEMU to handle these conditions.

The locomotives were purchased under a USD 101 million credit line agreement with China. The loan was to be settled within 15 years.[2]

In September 2012, the first units had trial runs.[1] The first Main Line train operated by the S12 began on 23 October 2012.[3]

Most of the named services operated by the S12 DEMUs were later taken over by the newer S14 DEMUs.

Current fleet details

[edit]
Class Configuration Operator No. in service Year Built Cars per Set Unit numbers.
S12 Main Line Set Sri Lanka Railways 7[1] 2012 - 2013[1] 8 917-939
Office Set 4[2] 7
Luxury Set 1[1] 8

Operations

[edit]
A S12 DEMU passing over the Nine Arch Bridge in Ella
Configuration Line Starting Station Key Stations Terminus Station
Main Line Set Main Line Colombo Fort Kandy / Matale Badulla
Office Set Kelani Valley Line Colombo Fort Polgahawela Rambukkana
Negombo
Kosgama
Luxury Set Main Line Kandy Ella
[edit]
  • A S12 at Ohiya station
    A S12 at Ohiya station

References

[edit]
  1. ^ a b c d e Range, Irangika (5 September 2012). "Five more power sets in operation". Ceylon Daily News. Retrieved 26 September 2012.
  2. ^ a b Range, Irangika (18 October 2012). "New power sets to reduce travel time - minister". Ceylon Daily News. Retrieved 18 October 2012.
  3. ^ Range, Irangika (23 October 2012). "Luxury train service launched". Ceylon Daily News. Retrieved 27 October 2012.
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