BS EN 13481-7:2012 PDF Download

The BS EN 13481-7:2012 standard specifies the performance requirements for special fastening systems used in switches and crossings and check rails. These fastening systems are categorized from A to E, based on their specific characteristics and intended use. The standard applies to fastening systems that are secured within the overall system, rather than being independently fixed to the bearers. These systems can be used on different types of bearers (wood, concrete, steel), in ballasted or slab track, and have specific maximum axle loads and minimum curve radii in divergent track.

Table 1 in the standard provides the criteria for each fastening category, including the maximum design axle load and minimum curve radius. Category A, for example, has a maximum design axle load of 130 kN and a minimum curve radius of 40 m. The standard also clarifies that the maximum axle load for categories A and B does not apply to maintenance vehicles.

The requirements specified in the standard apply to fastening systems that incorporate a resilient element and act on the foot and/or web of the rail. These systems are intended to be used with specific stock rail sections described in the relevant EN standards. It is important to note that this standard does not cover rigid fastening systems. Furthermore, the standard is focused on type approval of a complete fastening assembly, while requirements for quality control are addressed in the standards applicable to individual components.