Sri Lanka Railways S11 - Misplaced Pages

Sri Lanka Railways S11
S11 DEMU No. 901
Second Class Cabin
Stock type	Diesel Multiple Unit
In service	Since March 2011
Manufacturer	Integral Coach Factory
Designer	BHEL
Assembly	Chennai, India
Constructed	2011—2012
Number built	20
Formation	DPC + 3 TC + SC + DTC
Capacity	429
Operators	Sri Lanka Railways
Specifications
Car body construction	Fibre Reinforced Polymer (FRP) & Stainless steel
Car length	DPC & DTC - 21,462 mm (70 ft 5 in)
Doors	2 pairs of Hinged Doors on both ends 1 pair 2-leaf manual sliding doors in the middle
Maximum speed	100 km/h (62 mph)
Weight	100 t (98 long tons; 110 short tons) (20 t (20 long tons; 22 short tons) for DPC, 16 t (16 long tons; 18 short tons) for TCs & DTC)
Prime mover(s)	Cummins KTA 50L
Engine type	V16 4 stroke diesel, turbocharged
Power output	1,360 hp (1,010 kW)
Transmission	Diesel-electric AC/DC
AAR wheel arrangement	Bo-Bo
Bogies	ICF Bogies
Braking system(s)	Air
Coupling system	Schaku Semi Permanent Couplers between wagons & Automatic couplers (dual) on both ends
Track gauge	5 ft 6 in (1,676 mm)

Sri Lanka Railways S11 is a class of Diesel-electric multiple unit (DEMU) train set built for Sri Lanka Railways by Integral Coach Factory, India and imported through RITES Ltd, an Indian state infrastructure corporation on a line of credit extended by the Indian Government. They were built to replace locomotive-hauled passenger trains. Twenty S11 DEMUs were ordered to strengthen long-distance travel on the Coastal Line from Colombo to Matara.

History

Conception

The railway decided to add the DMUs to its service as part of its Coastal line's upgrade project, where track was upgraded to improve speed. The DMUs were built by Integral Coach Factory, to replace locomotive-hauled passenger trains.

Inauguration into service

The trains were inaugurated into the railway service on 11 March 2011 with a ceremony at Matara Railway Station. According to a press release from the Indian High Commission in Sri Lanka, twenty DEMUs would be supplied to Sri Lanka Railways in phases till March 2012.

One of the DEMUs faced technical problems on the Galle–Matara section; during the journey, the train came to an abrupt halt due to an electrical short-circuit and resumed its journey after 20 minutes when the fault was set right. Sri Lanka Railways suspended further importation of the DEMUs. In April 2011, the suspension was revoked after a team from RITES inspected them and declared that the faults were due to an electrical failure caused by tinkering and the DEMU running with more coaches than it was designed for.

Operations

The S11 DMUs are primarily operated on the Coastal line, connecting Colombo, Galle, and Matara. The sets are used on the Ruhunu Kumari, Vavniya ICE and several other suburban trains. Apart from the single instance of a 20-minute failure on the Galle – Matara section, there has been no other failure of the DMUs. Other than on Coastal Line, one DMU is running express on Puttalam Line where it only stops at Negombo and seven other stations up to Chilaw after Dematagoda.

Current fleet specifications

Class	Operator	No. in service	Year Built	Cars per Set	Unit numbers.
S11	Sri Lanka Railways	20	2011 - 2012	6	894-913

Formations
Formation	Number of Cars	Passenger capacity	Key
DPC + 3 TC + SC + DTC	6	429	DPC - Driving Power Coach (31 Third class seats) TC - Third class Coach (90 seats) SC - Second class Coach (72 seats) DTC - Driving Trailer Coach (56 Second class seats)

Crashes & incidents

Alawwa Crash

2011 Alawwa rail accident – On 17 September 2011, near Alawwa, two trains (a locomotive-hauled train and an S11 DMU No. 899) collided, killing 3 people and injuring 20. The S11 ran into the rear observation car of the train ahead.

Pothuhera Crash

On 31 May 2014 a north bound Deyata Kirula intercity express train hauled by S11 No. 902 and the Colombo bound Rajarata Rejini train hauled by Class M2 - 570 collided together in the Pothuhera railway station near Kurunegala injuring 68 people and causing serious damages to the both trains and the track. This has been considered as the most damage valued accident for Sri Lanka Railways.

Gallery

S11 No. 900
Second class seats
Interior ceiling and baggage racks

References

^ "ColomboPage". India hands over new power sets for Sri Lanka's Southern Railway Line. 2011-03-11.
^ "Daily News". Smooth ride from Colombo to Matara. 2011-03-11.
^ Radhakrishnan, R. K. (March 31, 2011). "Sri Lanka revokes suspension on Indian locomotives and rolling stock". The Hindu. Retrieved February 19, 2012.
"Dailynews". Power sets to steam long distance travel. 2010-09-03. Archived from the original on 2012-03-08.
"Maiden trip". Daily Mirror. March 11, 2011. Retrieved February 19, 2012.
"Daily Mirror". Indian power sets suspended. 2011-03-14.
"ColomboPage". Sri Lanka revokes suspension of Indian power sets. 2011-04-01.
"Daily Mirror". Ruhunu Kumari breaks down. 2011-03-12.
Cite error: The named reference Smooth ride2 was invoked but never defined (see the help page).
"Daily Mirror". Power sets are of high quality: Railway Dept. 2011-09-28.
"68 injured in train accident". Daily Mirror. Retrieved 2 May 2014.

v t e Locomotives and railcars of Sri Lanka
Steam locomotives	A1 A2 A3 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 C1 D1 D2 D3 E1 F1 F2 F3 H1^ J1^ J2^ K1^ L1^
Diesel-electric locomotives	G1 G2 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11
Diesel-hydraulic locomotives	P1^ N1^ N2^ W1 W2 W3 Y Y1
Steam railcars	R1 R2 R3 R4 V1^ V2^
Diesel railcars	T1 T2
Diesel multiple units	S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14
^ indicates narrow (2 ft 6 in / 762 mm) gauge stock

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