AS 7503.2 - Train Identification and Integrity Part 2: Freight Rolling Stock

This Standard establishes general principles for railway infrastructure managers to manage clearances throughout the asset lifecycle, specifies a system for calculating appropriate clearances, and provides recommended dimensions.

The objective of this Standard is to provide manufacturers and purchasers with materials, dimensions and performance requirements for rolled or cast sleeper plates of clip-fastening and double shoulder type intended for use with timber sleepers in railway track.

Changes to the previous edition are as follows:

1. Change of title of the AS 1085 series (previously Railway permanent way material).
2. The referenced documents list has been revised.
3. The most recent version of the informative Appendix ‘Means of demonstrating compliance with this Standard’ has been included.

This Standard covers cast iron sleeper plates and alloyed carbon steel sleeper plates within the limits for chemical composition. In the area of unalloyed carbon steel baseplates it is based on ISO 6305-2-1983, Railway components – Technical delivery requirements – Part 2: Unalloyed carbon steel baseplates, but differs from it as follows:

1. This Standard contains no requirements covering working gauges, acceptance conditions or statistical quality level criteria for product.
2. Materials for rolling are specified by chemical analysis.
3. Tolerances are specified for more dimensions and are in some cases different.
4. A bend test has been included.
5. Marking includes more detail.

Appendix C and Appendix D include full development profiles and section properties for sleeper plates.
The Standard now requires that the datum side of rolled steel sleeper plates be clearly marked and the chemical composition has been brought in line with other recently published steel Standards.

This Standard does not preclude the adoption, by agreement between the purchaser and the manufacturer, of requirements other than those specified herein. The drawings in the Appendices show typical hole positions only; alternative arrangements can possibly be negotiated with respect to hole configurations, dimensions and tolerances.

This document describes the requirements for event recorders installed in locomotive, self-propelled passenger, and infrastructure maintenance rolling stock vehicles.