NR TWI 2P006 ISSUE 1 PDF

Introduction

All rail fastenings must be kept tight to maintain the toe load on the rail. Loss of toe load will allow the rail to move lengthways, leading to buckling in CWR due to a loss of stress and in jointed track due to tight joints.

Loose fastenings can also lead to gauge spread through sideways movement. Any vertical vibration can lead to pad, insulator and sleeper wear.

This Track Work Instruction deals with the tightening of loose rail fastenings. See also the separate instruction:

TWI 2P004 How to remove and fit spike fastenings

TWI 2C008 How to install maintenance fastenings

TWI 2P048 How to change a plain line baseplate or chair