August 30 2018

PROSE defines new wheel profiles for Transports Publics Neuchâtelois SA

Understanding the wear limits for wheel profiles demands serious consideration of its technical requirements, always bearing in mind the operational and economical demands of the operator. Wear limits need to be backed by proof and justification - and need to be in sync with wear limits of rails, turnouts, and crossings.

PROSE has worked with Transports Publics Neuchâtelois SA (TransN) on the definition of the new wheel profile, as well as the wheel / rail-interface of the line 215.

Apart from the factors mentioned above, PROSE considered many other aspects. For example, when machining the wheel profiles the maximum values for the wheel and flange data must first be determined. This process involves coordination with rolling stock maintenance from TransN, the manufacturer and also the service provider, in this case Verkehrsbetriebe Zürich (VBZ). Moreover, the minimum-values for flange height, flange thickness and qR-value needed to be determined, taking into account the design drawings of the turnouts as well as the instructions given in AB-EBV (Implementing provisions of the Railway Ordinance) respectively RTE (Railway Technology Regulations).

PROSE’s technical familiarity with the project, and its experience of the context and culture in which it was to be inserted, ensured a smooth process which could be completed in a shorter time span.

Other PROSE news

March 18 2019
PROSE investigates and evaluates BVB unusual infrastructure damages

Basler Verkehrs-Betriebe (BVB) have optimized several processes in its technology management division and made changes to its organizational structure following the discovery made last summer of unusual damage on its tracks. This discovery showed a different, new damage pattern which can be attributed to a maintenance backlog in wheelset machining. The BVB Board of Directors wanted to understand the circumstances and causes as well as the administrative and personnel responsibilities that led to this maintenance backlog. The board therefore commissioned an independent external investigation for which the results are now available.

February 22 2019
PROSE supports smartrail4.0 elaborating and presenting COAT - the CCS vehicle architecture at the “Industrietag 2019” event, dated February 21st

Switzerland is synonym to chocolate and cheese – and of course: railways! To ensure that it stays this way, Swiss Railways (SBB), Bern-Lötschberg-Simplon Bahn (BLS), Schweizerische Südostbahn (SOB), the Rhaetian Railway (RhB), and the Union of Public Transport (UPT) have joined forces and got the entire railway sector involved in the program “smartrail4.0”.

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