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Strale M.,Free University of Colombia | Krysinska K.,Black Dog Institute | Overmeiren G.V.,Infrabel | Andriessen K.,University of New South Wales | Andriessen K.,Catholic University of Leuven
International Journal of Injury Control and Safety Promotion

This study investigated the geographic distribution of suicide and railway suicide in Belgium over 2008--2013 on local (i.e., district or arrondissement) level. There were differences in the regional distribution of suicide and railway suicides in Belgium over the study period. Principal component analysis identified three groups of correlations among population variables and socio-economic indicators, such as population density, unemployment, and age group distribution, on two components that helped explaining the variance of railway suicide at a local (arrondissement) level. This information is of particular importance to prevent suicides in high-risk areas on the Belgian railway network. © 2016 Informa UK Limited, trading as Taylor & Francis Group Source

Breugelmans S.,TUC Rail | Leterme W.,Catholic University of Leuven | Van Hertem D.,Catholic University of Leuven | Marcelis R.,Infrabel
IET Conference Publications

In this paper, different methods to limit short circuit currents in DC traction networks are compared. Typically, DC traction networks are supplied by the AC grid by means of an uncontrolled diode bridge rectifier. In case of a low-impedance short circuit fault between catenary and rail, the fault current reaches a large value. For densely meshed networks the mechanical circuit breakers can become too slow. The methods studied are applying fault current limiters, faster interruption of fault currents and adding controlled rectifiers. The fault current limiters considered are a reactor and a superconducting fault current limiter (SFCL). For faster interruption of fault currents, a hybrid circuit breaker is investigated. Simulations show that the short circuit current can be limited considerably by installing limitation devices after the rectifiers, when the short circuit occurs close to a substation. Fast interruption of the fault or application of the SFCL results in the strongest reduction of the short circuit current. Source

Van De Sype D.M.,Unit of High Voltage | Hayt P.,Infrabel
Civil-Comp Proceedings

To improve the availability of the supply for signalling applications, an automatic transfer between 2 utility supplies is commonly used in the Belgian railway infrastructure. The control of this transfer is done by a voltage monitoring relay that was developed in-house in the 1960s. Though the relay has always been a very reliable product, it responds too nervous to small voltage dips and provokes as such unnecessary transfers. It is observed that the short interruptions resulting from these transfers occasionally disturb the signalling equipment and cause train delays. To solve this problem a new voltage monitoring relay is designed that reduces the number of unnecessary switch-overs to a minimum. The main features of this voltage monitoring relay are: single relay control, internal supply through measurement terminals, integrated contactor coil condition monitoring, microprocessor based and reprogrammable, straightforward settings with dials and DIP switches, wide voltage range with automatic detection of the nominal voltage and suited for 1-phase and 3-phase applications. © Civil-Comp Press, 2014. Source

Van De Sype D.M.,Unit of High Voltage | Hayt P.,Infrabel
Civil-Comp Proceedings

To supply the local signalling equipment alongside the track, it is common to use a dedicated distribution system. After a short overview of the distribution systems employed in neighbouring countries, the 1 kV distribution system used in the Belgian railways is discussed, together with the recent evolutions. As a last step in the evolution, the concentration of the batteries in the distribution substations is proposed as a measure to reduce the costs while at the same time improving the reliability, availability and maintainability of the system. Besides this, the system has as main features: backward compatibility, improved safety, use of industry standard components and remote sectioning capabilities for faulty cables. © Civil-Comp Press, 2014. Source

Schoonbaert L.,Infrabel | Eeckhaut S.,Infrabel
Case Studies in Fire Safety

Between October 2007 and June 2012, the Belgian Railways Group and its partners built a new railway tunnel under the main runway of Brussels Airport, to unlock the - also enlarged - station from the unidirectional connection that was available at that time. To facilitate evacuation, intervention and rescue in this newly built 4. km long infrastructure of the so-called Diabolo project, we designed an automated fire scenario system which is part of the tunnel's and station's safety concept based on EU Directive 2001/16/EC, NFPA 130 and UNECE TRANS/AC.9/9. Furthermore we implemented access control and intrusion detection as part of the complex' security concept. In this paper we present our design and our experiences of setting up the system. We also present our real "burning" train test, which took place during the commissioning phase of the project and was a unique opportunity to test the system's response to "a train on fire" entering the tunnel complex. © 2015. Source

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