Rail safety issues and actions

Standard for derailment risk on small-radius curves

Issue number: RO-2016-002-SI-06
Who it affects: Owners and operators of passenger rail services in Victoria
Issue owner: Metro Trains Melbourne
Transport function: Rail: Passenger - metropolitan
Background: Investigation Report RO-2016-002
Issue release date: 16 May 2018
Current issue status: Partially addressed
Issue status justification:

The safety action taken by MTM in combination with other actions pertaining to track maintenance and rail lubrication should reduce flange-climb risk.

Safety issue description

There was no network standard that directly dealt with increased derailment risk on small-radius curves.

Proactive Action

Action number: RO-2016-002-NSA-008
Action organisation: Metro Trains Melbourne
Date: 16 May 2018
Action status: Closed

Metro Trains Melbourne (MTM) has updated its track management system to provide more specific criteria on the treatment of faults that contribute to flange-climb risk on small-radius curves. The revised procedures also provide guidance to consult with the Principal Technical Lead to assess potential wheel-climb risk and control measures.

Last update 16 May 2018