Detrainment device

A costumed character representing SMRT Corporation demonstrates the use of emergency detrainment ramps on a refurbished Kawasaki Heavy Industries C151.

A detrainment device is equipment on a rail vehicle that provides an evacuation route for the passengers. It usually consists of a set of steps or a ramp, located at a doorway, allowing passengers to leave the vehicle in an emergency, vehicle breakdown or accident.

A detrainment device is moved from a stored location into an operational position, usually above the coupler at the end of a passenger car. A detrainment device may consist of a manually placed, hinged, foldable or telescopic ladder or ramp. A detrainment device may allow evacuation to track level, or to a coupled railcar. A detrainment device may be fitted with handrails.

In other cases, evacuation may be via the vehicle passenger side doors to a trackside walkway in a tunnel, without the use of a detrainment device.

Types

Examples of the main types of detrainment device currently in service include:

Hinged steps, stored inside the driver's cab or the passenger saloon

London Underground S Stock^[1]^[2]

Steps, folding, hinging or sliding out from the doorway

London Underground 1973 Stock (refurbished)^[3]
London Underground 1996 Stock^{[citation needed]}
British Rail Class 378^[4]

Ramp, sliding out from below the doorway

Ramp, folding out from the doorway

Tensioned Fabric ramp, deploying from the doorway

MTR Corporation Airport Express A-Stock EMU
Siemens Modular Metro and Bombardier Changchun Coaches – Bangkok BTS Skytrain
KTM Train Coaches (even Tiger Trains)
Bombardier MOVIA C951 - Downtown Line^[9]
Alstom Metropolis C830 and C830C – Circle Line (Singapore)
Alstom Metropolis C751C
Alstom Metropolis Barcelona Metro line 9^[10]

Performance

User trials on prototype equipment in controlled conditions have indicated that a wide detrainment ramp will allow the evacuation of 2500 passengers in 28 minutes^[6] if the ramp, its handrails and the cab and saloon throughways are correctly specified. Modern detrainment step systems can detrain one person every two seconds.

References

↑ Bloomfield, Paul; Bolton, Geoff (August 2010). "The Introduction of S Stock" (PDF). London Underground Railway Society.
↑ "New Detrainment System for Underground Metro Vehicles". DCA.
↑ "(untitled)". Percy Lane Products. Archived from the original on January 20, 2011.
↑ "(untitled)" (PDF). London Health and Safety Group. Archived from the original (PDF) on March 17, 2012.
↑ Barat Group (April 7, 2011). DelhiRS3. YouTube.
1 2 "(untitled)" (PDF). Hyundai Rotem."Hyundai Rotem".
↑ "Emergency Evacuation Door". Barat Group. Archived from the original on 2015-01-19. Retrieved 2015-01-19.
↑ "(untitled)". Archived from the original on August 9, 2011.
↑ Barat Group (April 5, 2011). Singapore DTL. YouTube.
↑ "(untitled)". Barat Group. Archived from the original on December 7, 2010.

External links

[1] Bloomfield, Paul; Bolton, Geoff (August 2010). "The Introduction of S Stock" (PDF). London Underground Railway Society.

[2] "New Detrainment System for Underground Metro Vehicles". DCA.

[3] "(untitled)". Percy Lane Products. Archived from the original on January 20, 2011.

[4] "(untitled)" (PDF). London Health and Safety Group. Archived from the original (PDF) on March 17, 2012.

[5] Barat Group (April 7, 2011). DelhiRS3. YouTube.

[rotem-6] 1 2 "(untitled)" (PDF). Hyundai Rotem."Hyundai Rotem".

[7] "Emergency Evacuation Door". Barat Group. Archived from the original on 2015-01-19. Retrieved 2015-01-19.

[8] "(untitled)". Archived from the original on August 9, 2011.

[9] Barat Group (April 5, 2011). Singapore DTL. YouTube.

[10] "(untitled)". Barat Group. Archived from the original on December 7, 2010.

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