CEN/TC 256/SC 1/WG 21 - Acceptance of trackwork after renewal and/or maintenance work

This document specifies technical requirements and tolerances for the acceptance of works on ballasted track situated on:
-   plain line;
-   switches and crossings; and
-   rail expansion devices as part of the track
for 1 435 mm and wider track gauge railways.
The works on ballasted track, hereafter referred to as track works, concern construction of new track, track renewal and track maintenance.
This document specifies the requirements for substructure works, track geometry, absolute track position, working parameters of on track machines, track components, ballast cross section, structure gauge, stressing works, specific measurements and quality checks for switches and crossings and rail expansion devices, and for the measuring systems used to perform measurements, verifications and checks for the scope of acceptance. Requirements for responsibilities and documentation necessary for the acceptance of track works are specified.
This document also requires compliance of all track materials with the customer’s relevant acceptance criteria and specifications provided by the supplier.
This document does not cover works related to reprofiling the railhead or the associated measurements, except for some measurements related to safety, as these works are covered by other parts of EN 13231 series.
Platform reconstruction works and level crossing works are not covered by this document.
This document does not apply to urban rail systems or ballastless track.

This European Standard specifies the minimum technical requirements and the tolerances for the acceptance of works on ballasted track situated on plain line and on switches and crossings and rail expansion devices, as part of the track, for 1 435 mm and wider track gauge railways, concerning construction of new track, track renewal and track maintenance. More particularly, this standard gives the requirements for the documentation of work parameters, for the tolerances for relative track geometry and absolute track position and for the acceptance procedures.
This standard does not deal with contractual and legal aspects and it does not cover either works related to reprofiling the railhead nor the associated measurements, except for some measurements related to safety, since these works are covered by other parts of EN 13231 series.
Related works, e.g. platform reconstruction, formation, drainage, level crossings are not covered by this standard.

This European Standard specifies the requirements and tolerances for the acceptance of work associated with plain line on ballasted track for 1 435 mm and wider gauge railways.

This European Standard specifies the requirements and tolerances for the acceptance of work associated with switch and crossing layouts (also includes work on expansion devices) on ballasted track for 1 435 mm and wider gauge railways.

This part of this European Standard lays down the technical requirements and the measurements to be made for the acceptance of work to re-profile both longitudinally and transversely the heads of railway rails, including the parts of switches and crossings that can be reprofiled.
For acceptance purposes, two classes of longitudinal profile and three classes of transverse profile tolerance are defined.
It also informs about procedures to verify reference instruments to be used for these measurements and informs about a method to approve non-reference instruments to be used for measurements.
It applies to reprofiled vignole railway rails 40 kg/m and above.
A form of acceptance documentation that may be used is given in Annex C.