Vuosaari Harbour Railway line Tunnel safety

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Vuosaari Harbour Railway lineTunnel safety

• Timo Cronvall
• VR-Track Ltd/Railway Consulting
• NJS meeting in Göteborg
• 9.10.2007

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History of the project

• Design first started in 1970s
• General desing phase in 1997-1999
• Evaluation of generald design phase in 2000-2001
• Detailed design phase 2002-2004
• Building started 2004
• In every phase, safety issues have been discussed
  in a group with participants from all the
  important groups
• Rail Administration
• Operator
• Rescue services
• Environmental authorities
• Consultants HVAC-designers

RAMO 18 Technical specifications and regulations
for Railway Tunnels (1998)
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Savio Railway tunnel
Main line
Northern Portal
Lahdenväylä
Kehä III
Porvarinlahti Road Tunnel
Labbacka Railway tunnel
Southern portal
Porvoonväylä
Harbour railway line, longitudinal profile
Kaskela access tunnel
Päiväkumpu access tunnel
Kuninkaanmäki shaft
Myras shaft
Jokivarsi access tunnel
Leppäkorpi shaft
Hakunila shaft
Savio
Labbacka
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Savion rautatietunneli
Main line
Lahti motorway
Ring Road III
Northern portal
Southern portal
Porvoonväylä
Km 45799
Km 32799
Km 32799
Km 38399
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Vuosaari Harbour Railway
Basic information for safety design

• Length 13,5 km
• Single track and electrified (125 kV) line with
  automatic train protection systems
• Only freight traffic, Sn 80 km/h, track
  geometry designed for 100 km/h
• Trains/day at start of operation 5 5 (max. 10
  10)
• No tank wagons allowed in the tunnel, dangerous
  goods in tank containers
• No regular traffic with diesel engines (only for
  maintenance work)
• Only one train in tunnel at a time
• Only one driver in train

19 km
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Typical cross section

• Tunnel structures
• Drill and blast rock tunnel with
• Steel fibre reinforced shotcrete
• Rock bolting
• Lining structure
• 80 mm PE-foam sheets
• Wire mesh reinforced shotcrete
• as fire protection (100 mm)

Cable route
Lightning
Escape signage
Escape walkway
Hand rail
Hand rail
Emergency light
20 kV Cable route
Communication ang signage cable route
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Technical systems

• Drainage system
• drainage lines
• measuring dams
• pumping stations
• Lightning
• normal lightning
• safety lightning
• backup lightning
• 20 kV system
• High voltage cables
• mains centres
• transformers

• Antenna systems
• Railway radio system
• Rescue service radio system
• GSM
• Ventilation and smoke control
• impulse fans
• smoke extractor fans
• smoke screens

• Fire fighting
• fire water lines
• fire posts
• fire alarm buttons
• safety systems
• emergency phones
• fire detectors
• security systems
• video monitoring

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Savio tunnel safety principles

• The Savio tunnel will be equipped with such
  technical systems that there will be reasonable
  conditions for securing the lives and properties
  in tunnel as well as to facilitate safe working
  conditions for rescue services.
• Train drivers, maintenance crews and rescue
  service personnel are trained for working in
  tunnel
• The tunnel will be equipped with escape routes
  out of the tunnel and access routes for the
  rescue services
• The maximum length of single escape route is 2
  km, so it is required to have extra systems for
  securing the safety of train driver
• i.e. all locomotives are equipped with breathing
  apparatus for the driver.

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Savio tunnel safety systems

• There will be water supply for fire fighting and
  continuous communication system for whole length
  of the tunnel.
• Tunnel will be equipped with fire posts (1 pc /
  100 m of tunnel). Fire water feed connection are
  in tunnel portals and in portals of access
  tunnels and shafts.
• There will be continuous fire detection system in
  the tunnel and fire detectors in all technical
  rooms. All technical rooms and acess point areas
  outside the tunnel are separated as their own
  fire protected sections
• Emergency phones and fire alarm buttons will be
  installed at 300 m intervals through the tunnel.

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Savio tunnel safety systems

• Tunnels will be equipped with antenna systems
  that will make it possible for communication
  systems to work in tunnel i.e. rescue service
  radio system, GSM-R and railway maintenance
  communication systems
• All access points to the tunnel will be equipped
  with CCTV-system and access control systems.
• All control systems are monitored from the tunnel
  operation center with a centralized control
  system. All information is also available in the
  railway traffic management centre.
• The tunnel will be equipped with special
  emergency earthing systems in all access points.

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Savio tunnel safety systems

• The tunnel will be equipped with smoke extraction
  systems for all tunnel sections.
• In fire situation the smoke from the tunnel is
  extracted with special smoke extraction fans
  through tunnel portals and four access shafts.
• With the smoke extraction fans it is possible to
  produce at least 2 m/s air speed and the air in
  the tunnel section will change at least three
  times/hour.
• The tunnel is equipped with smoke screens that
  will make it possible to separate tunnel to 5
  different sections smoke extraction sections.

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Smoke screen
Pictures by Pöyry Infra Oy
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Smoke extraction principle
Fresh air Smoke extraction Escape route
Smoke screen
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Thank You