I'll just leave this here... http://www.dtpli.vic.gov.au/__data/assets/pdf_file/0008/242558/Derailment-of-Tourist-and-Heritage-Train-Victorian-Goldfields-Railway-Near-Maldon-4-March-2012.PDF
12-Monthly track inspection
The most recent VGR consultant’s inspection of track and associated infrastructure was conducted concurrently with the 6-monthly inspection.
The report deemed the track to be suitable for the current operation of passenger services. For the Maldon-to-Muckleford section, the report noted:
The generally poor condition of sleepers and the need for a major sleeper renewal
program within two years.
That the alignment of the track and the sleeper condition were reasonable with no
apparent deterioration in the last 12 months.
That the number of broken sleepers was minimal but that broken sleepers should
be replaced as necessary.
The report did not identify a specific requirement for the replacement of sleepers in the
vicinity of the derailment.
This could happen on any railway. This report does suggest any track issues were recorded and there was a plan to have any issues re mediated. Looks like the rainfall and other environmental s were input to the incident.
The report does not suggest a necessary maintenance cycle was not in place at the time. There is no suggestion the organisation was not maintaining the track to passenger standard.
The Muckleford to Maldon section is the oldest on the railway.