Tunnelling & Underground SpaceTunnel Ventilation, Fire & Life Safety

Atkins provides a wide range of services convering all aspects of

road and rail tunnel safety, including ventilation, risk analysis and

fire safety. Atkins’ expertise has been gained over many years of

involvement in major public and private sector infrastructure projects

and goverment-funded research projects.

Our Tunnel Ventillation, Fire & Life Safety team has a long history of

providing specialist expertise and innovative engineering solutions to

ventillation and safety challenges in complex tunnel projects.

Our engineers are committed to providing specialist services for all

aspects of tunnel ventillation. We also provide expert witness services

in support of design applications, appeals and arbitration.

Our skills and services include

• Design and analysis for ventilation of road and rail tunnels, metro

systems and other forms of tunnels

• Aerodynamic and thermodynamic analysis for tunnel systems

Design for refurbishment of tunnel ventilation and fire safety

systems

• Escape route planning and rescue concepts

• Computational Fluid Dynamics (CFD) and fire modelling

• Quantitative and implementation of tunnel ventilation and

pollution monitoring

• Post-inciddent investigation and analysis

Ventilation and Life SafetyA3 Hindhead

Atkins was commissioned by the Highways Agency to develop the A3

Hindhead improvement scheme, inlcudiing a 2km twin-bore road

tunnel, to sufficient detail for the tender of the ‘early contractor

involvement’ (ECI) design and build contract. In the course of the

development of the illustrative design, Atkins made technical and

operational proposals for the tunnel.

Safety objects were established and analysis carried out of the

operational hazards. Quantitative assessment of risk, including time-

line analysis for incident development and modelling of vehicle fires

using computational fluid dynamics, contributed to the development

of the tunnel configuration and fire and emergency strategies.

Aero and thermodynamicsMetronet, Ventilation Analysis

Atkins was commissioned by Metronet to perform the aerodynamic

and thermodynamic modelling of the Victoria Line underground

system of tunnels, shafts and stations with existing rolling stock. In

addition, predictive modelling of temperature and airflows on the

line with proposed new rolling stock, timetables and passengers was

carried out.

Modelling and Monitoring Birmingham City tunnel refurbishment

Atkins has recently been commissoned by Birmingham City Council to

develop the feasibility and outline design for the refurbishment of a

number of road tunnels situated on the busy approach road to the

city. Design and analysis work has included modelling of present and

future vehicle emissions using complex 1D transient software.

Measurements were also carried out to provide data for the

verification of modelling data and to provide confidence in design

parameters used in the development of the ventilation design

concepts.

Quantitative Risk Analysis Dangerous Goods Transport QRA, UK road tunnels

Atkins was one of the three partners commissioned to develop the

OECD/PIARC QRA Model for the analysis of risk associcated with the

transport of dangerous goods through road tunnels; a model that is

used for the analysis of dangerous goods transport risk, as required by

the EU Directive on minimum safety requirements for road tunnels.

Atkins expert have applied the model to a number of UK road tunnels

to provide information to support the decision making process

regarding tunnel categorisation and prohibitions for dangerous goods

vehicles.

Tunnelling Skills & Services

•cutandcovertunnels

•cavernsandundergroundstations

•railway,roadandwatertunnels

•mechanisedsoftgroundandrocktunnels

•shafts

•directionaldrillingandthrustboretunnelling

•tunnelremedialworks

•expertservices

•ventilationstudies

•lifesafety

•undertrackcrossings

•projectmanagement

For further details regarding our capabilities please email:

tunnelengineering@atkinsglobal.com

© Atkins Limited except where stated otherwise. The Atkins logo, ‘Carbon Critical Design’ and the strapline ‘Plan Design Enable’ are trademarks of Atkins Ltd.

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Epsom, Surrey, KT18 5BW

www.atkinsglobal.com