Railway Investigation Report

Executive Summary

Safety Issues Investigation Report SII R05-01

Table of Contents

1.0 Introduction

  • 1.1 Background
  • 1.2 TSB Occurrence Record for Selected Subdivisions
  • 1.3 Transport Canada Inspections
  • 1.4 Focus of Safety Issues Investigation
  • 1.5 The Effects of Bulk Unit Train Traffic on Secondary Main Lines
  • 1.6 Statistical Analysis
  • 1.6.1 Sample Selection
  • 1.6.2 Results

2.0 Discussion

  • 2.1 Causal Link Between Bulk Tonnage Traffic and Rail Defect Rate
  • 2.2 Railway Processes to Handle Increased Loading on Secondary Main Lines
  • 2.3 Maintenance, Inspection, and Testing
  • 2.3.1 Rail Testing
  • 2.3.2 Rail Grinding
  • 2.3.3 Rail Joints
  • 2.3.4 Bolt Holes
  • 2.4 Railway Track Safety Rules

3.0 Findings

Appendices

Figures

  • Figure 1 - Location and Subdivision of the Eight Occurrences
  • Figure 2 - CPR Main Line Map with Selected Subdivisions
  • Figure 3 - Relation of Rail Defect Rate to Bulk Unit Train Tonnage on Six CPR Western Subdivisions
  • Figure 4 - Rail Grinding Activity on Selected CPR Subdivisions, 2000-2003

Tables

  • Table 1 - Derailment Occurrences
  • Table 2 - Subdivision Sample Selection
  • Table 3 - Correlations Among Variables
  • Table 4 - Selected CPR Subdivisions

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