BS EN 13231-2:2020 pdf free.Railway applications一Track 一Acceptance of works.Acceptance of reprofiling rails in plain line,switches, crossings and expansion devices.
BS EN 13231-2 This document defines the technical requirements and measurements for the acceptance of works for longitudinal and/or transverse reprofiling of railway rail heads in plain line, switches and crossings and expansion devices.This document applies to Vignole rails of 46 kg/ m and above according to EN 13674-1.There are no normative references in this document.For the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http://www.electropedia.org/ ISO Online browsing platform: available at https://www.iso.org/obp reprofiling zones in switches area where required reprofiling work is done on the switches depending on the position of the rail within the switch.approved instrument instrument for measurement of longitudinal or transverse profile, the usage of which is justified by correlation of its performance with that of a reference instrument in accordance with the defined procedure Note 1 to entry:For procedure to demonstrate correlation, see Annex B.reference instrument instrument for the measurement of longitudinal or transverse profile, the performance of which has been verified in accordance with the procedure defined in Annex C. Quality class 1, quality class 2, quality class 3 classes of the surface quality of the reprofiled rail cut-off wavelength wavelength of a sinusoidal profile of which 50 % of the amplitude is transmitted by the profile filter Note 1 to entry: Profile filters are identified by their cut-off wavelength value, see EN ISO 16610-21.deviation of the measured profile deviation between the measured transverse profile and the reference rail, measured normal to the surface of the reference rail when the measured transverse profile and the reference rail are aligned at points A and B1 or A and B2, without rotation of either profile Note 1 to entry: The deviation is considered positive when the measured transverse profile is above the reference rail.Note 2 to entry: For deviation, see Figure 4.facet flat sector of the transverse profile of a reprofiled rail produced by the reprofiling tool primary profile representation of the measured longitudinal profile before application of any profile filter.BS EN 13231-2 pdf download.