The existing track and structures inspection codes were prescriptive and did not embrace the risk assessment principles documented in the more recent Structures Inspection Manual W200 or required for rail systems under National Rail System Standard (NRSS) 4.
The Commission recommends that the NZ Transport Agency oversee KiwiRail Network’s internal review of its track and structures inspection regimes defined in the codes T003 and W004 to ensure that the outcome is a combined track inspection process that covers all aspects of the track risk assessment using a methodology guided by that defined in NRSS 4: Risk Management.
