The Hungarian national railway company MÁV is relying on diagnostics systems supplied by the voestalpine Group.
Axle and brake temperatures are an important indicator of the condition of rolling stock. Temperature deviations can denote damage to a wagon’s axles or brakes. Where damage is not quickly identified, broken bearings or leaking lubricants can result in axles breaking. The consequences of overheated brakes can be equally critical; sparks can set fire to rolling stock–a particular danger in freight wagons transporting flammable materials.
Diagnostics systems from voestalpine SIGNALING
voestalpine SIGNALING Siershahn GmbH, based in Germany, produces diagnostics systems which identify unacceptable temperature rises in the wheelset bearings on rolling stock, and promptly report them to the station master. Infrared sensors measure the temperature of the axle boxes on passing trains. Hot box detection systems are usually installed 40 to 70 km apart on conventional lines, and every 35 to 40 km on high speed lines. Where overheating is not promptly identified, it can lead to axles breaking and, in certain circumstances, wagon derailments.
Delivering systems to Hungary
29 such systems have been sold via VAMAV Vasúti Berendezések Kft, the voestalpine representative in Hungary for use throughout the country. Prior to procurement, a range of manufacturers were required to demonstrate their safety systems for the rail industry to representatives of the Hungarian national rail company MÁV. This was then followed by an international tender. The PHOENIX MB diagnostics systems came out as winners in the hot box detection systems category. Several such systems are already in operation in Hungary. As MÁV is extremely pleased with how the systems have functioned to date, this helped influence the positive decision.
All the systems will be delivered by the end of 2015. Installation is technically complicated and so will be undertaken by VAMAV. In addition to the unit installed in the track, a second, external system houses the communication unit. This system delivers the data to the nearest signal box. Where the data deviates from standard parameters, an alarm is activated and the affected wagon can be removed from the train at the next station. The system not only plays a part in operational safety, but also serves as a condition monitoring instrument. The data also provides information about the need for wagon maintenance, allowing maintenance work to be more efficiently scheduled and coordinated.
Website voestalpine SIGNALING: http://www.voestalpine.com/signaling