Citytunneln is constructed according to high safety requirements. High safety during the construction and operating phase is achieved through safety-mindedness being introduced into planning, design and construction.
A number of risk analyses have therefore been conducted before the start of construction and will continue throughout the construction phase. Appropriate safety measures will be implemented on the basis of these results.
Citytunneln is planned exclusively for passenger traffic. Goods transport will therefore not operate on the tracks. Neither is Citytunneln allowed to be used for the transport of dangerous goods. The inspecting authority may however permit dispensation for individual transports but only when safety requirements are complied with. Diesel train traffic is also excluded.
All trains that operate inside Citytunneln shall have emergency brake blocking installed. If anybody pulls the emergency cord in a tunnel, the train will continue to the nearest station for evacuation. Emergency brake blocking is one of several requirements applied to the trains that will pass through Citytunneln.
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Smoke is exctracted through the fan
system in the event of evacuation.
Positive pressure in the glazed escalator
area prevents the ingress of smoke. |
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Intersecting tunnels at intervals of about 350
metres will provide evacuation routes, in case
of an emergency. |
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The emergency services will be able
to enter the tunnels through the two
access shafts. |
Safe evacuation
In the possible event of a fire in a train, the train will normally be driven to the nearest station where it will be evacuated. The stations are built to cope with rapid and safe evacuation. Train traffic control is responsible for when and how the evacuation of trains and station can take place.
If a train cannot continue to the nearest station there are 13 cross tunnels at intervals of approximately 350 metres for evacuation below ground. In an emergency the traffic is discontinued even in the tunnel tube that is not affected. Malmö CN, Triangeln and Hyllie stations are designed to operate as the nearest safe evacuation location.
They are also designed and prepared so that a rescue action can be implemented in the best and safest way. The rescue services are able to instigate action in the tunnel and at stations via several approach paths from ground level. The approach paths are strategically located along the entire stretch of the tunnel.
Automatic information
If an emergency arises, a spoken evacuation message will be broadcast from the loudspeakers located above the platforms and along the evacuation paths at the relevant station. An automatic evacuation message will also be displayed on the information monitors within the station and along the entrances and exits to ground level. Inside the trains the train staff can forward information to travellers given by the train controller. Any fumes from a fire are extracted via ducts in the roof. Escalators are kept free from smoke through glazing and positive pressure. The tunnel and stations are designed so that fire or smoke cannot be spread from one tunnel tube to another.
Monitoring
A requirement for acceptable safety is a properly functioning organisation. Safety issues are under continuous review together with the authorities. A special reference group has been appointed to monitor and influence the work throughout the entire project duration. The group comprises members from the authorities and organisations that deal with safety and rescue issues. Exercises take place during the construction stage and before the start of operations to test safety. Monitoring of traffic and technical installations will be done via the Swedish Rail Administration’s operations control centre that is manned 24 hours a day.
Safety policy
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Citytunneln will comply with high requirements for safety against injury to persons, property and the environment and will be designed so that it is at least as safe as other modern railway installations in Sweden.
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High safety during the construction and operating phase shall be achieved through safety-mindedness being introduced into planning, design and construction.
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The design of facilities and installations shall be chosen so that they contribute to high operational safety and accessibility, which is important to increased usage of the railways as a means of transport.