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NR/L3/TRK/3406

Design, Installation and Maintenance of Modular Bearer Joints

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Organization: NR
Publication Date: 3 June 2021
Status: active
Page Count: 12
scope:

This document provides a framework for the design, installation and maintenance of modular switch and crossings bearer joints. The standard is split into modules for each aspect.

This document applies to:

a) all staff who work with modular Switch and Crossing System (S&C). This includes designers, installers, manufacturers, maintainers both within Network Rail and external suppliers; and

b) all existing and new modular S&C installations (to the RE/PW standard design) on Network Rail infrastructure.

Purpose

This standard gives requirements for the design, installation and maintenance of modular Switch and Crossing systems. The standard is split into modules for each aspect. The purpose of the document is to control the risk of the following failure modes occurring in modular S&C layouts:

a) wide gauge;

b) damaged and ineffective thread on dowels at the bearer joint;

c) bearers cracking;

d) screws breaking (in shear at end of thread or head breaking off);

e) loose screws; and

f) twist faults around joints.

Document History

NR/L3/TRK/3406
June 3, 2021
Design, Installation and Maintenance of Modular Bearer Joints
This document provides a framework for the design, installation and maintenance of modular switch and crossings bearer joints. The standard is split into modules for each aspect. This document...
September 7, 2019
Design, Installation and Maintenance of Modular Bearer Joints
This document provides a framework for the design, installation and maintenance of modular switch and crossings bearer joints. The standard is split into modules for each aspect. This document...
September 1, 2018
Design, Installation and Maintenance of Modular Bearer Joints
This document provides a framework for the design, installation and maintenance of modular switch and crossings bearer joints. The standard is split into modules for each aspect. This document...
March 3, 2018
Installation of Modular S&C
This document covers: Ballast requirements for modular S&C a) How to align modular S&C bearers b) How to install modular S&C ties c) How to tamp modular S&C tied bearers following installation...
September 2, 2017
Installation of Modular S&C
This document covers: a) Ballast requirements for modular S&C b) How to align modular S&C bearers c) How to install modular S&C ties d) How to tamp modular S&C tied bearers following installation...

References

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