BS EN 16729-2:2020 pdf free.Railway applications一Infrastructure一Non-destructive testing on rails in track Eddy current testing of rails in track.
BS EN 16729-2 1 Scope This document is applicable to testing of rails installed in track for detecting rail surface cracks. This
document applies to testing equipment in inspection-trains or reprofiling machines and manual systems. This document specifies the requirement for testing principles and systems in order to produce comparable results in respect to the location and the characteristic of surface cracks. This document is not aiming to give any guidelines for managing the result of eddy current rall testing. This document does not define the requirements for vehicle acceptance. This document is not concerned with production testing of rails in a production plant. This document applies only to rail profiles meeting the requirements of EN 13674-1. 2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13231-5, Railway applications- Track- Acceptance of works- Part 5: Procedures for rail
reprofiling in plain line, switches, crossings and expansion devices EN 16729- 1:2016, Railway applications一Infrastructure 一Non-destructive testing on rails in track一 Part 1: Requirements for ultrasonic inspection and evaluation principles 3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 16729-1:2016 and the following apply. IS0 and IEC maintain terminological databases for use in standardization at the following addresses:  ●IEC Electropedia: available at  ttp://www.electropedia.org/ ●IS0 Online browsing patform: available at ht://wwwiw.w/opop 3.1 real crack crack caused by traffi loads or production induced Note 1 to entry: Cracks may also be simulated. They then constitute an artificlal feature dssigned to represent a real defect of a known size, orientation and position.With the help of eddy current testing, surface cracks can be detected in electrically conducting materials (erromagnetic or non-ferromagnetic materials). Eddy current testing is based on the induction of electric current in electrically conducting material. The measured and analysed size refers to the ditribution of the induced currents (eddy currents). The distribution of the eddy currents in the material is governed by physical laws; the density of these eddy currents drastically decreases with the distance to the surface.  BS EN 16729-2 pdf download.