Location of the derailment
(Credit: Toitū Te Whenua, LINZ)
Image/Supplied
KiwiRail needs to fix problems with its systems and training for responding to foul weather and stay up to date with how
well third parties maintain their waterways in the rail corridor.
The Transport Accident Investigation Commission (TAIC) calls out these systemic safety issues in a new report, out today
[THURSDAY 20 JUNE 2024] about a train derailment in stormy weather near Te Puke, Bay of Plenty, in January 2023.
A KiwiRail freight train was travelling from Kawerau to Tauranga on the East Coast Main Trunk line with 39 wagons in the
early hours of 29 January after heavy rain with flooding. The train drove at about 60km/h along a section of track with
floodwater crossing it, the emergency brake activated automatically and the locomotive stopped. Only five wagons were
behind the locomotive, of which four were uncoupled, and the remaining 34 wagons were 100 metres back down the track.
Eleven wagons had derailed and lay strewn, some overturned, with disgorged freight in a chaotic pile across fields on
either side of the track.
Chief Investigator of Accidents, Naveen Kozhuppakalam, says the accident happened because heavy rain and consequent
volume of floodwater overwhelmed the drainage system around and under the rail corridor.
"At the accident site, water levels rose about 3.5 metres and washed out the stone and gravel support for the tracks.
The fully laden train passed over the unsupported tracks, pushed the rails out of shape, wagon wheels lost contact with
rails, and the wagons derailed.
"The train was cleared to travel on this section of track, but it shouldn't have been. The previous day, the same train
crew told Train Control that they saw high water at what became the accident site, but they did so unclearly and the
track inspector inspected the wrong location.
"To avoid similar accidents in future across New Zealand, a lot of elements need to come together. KiwiRail should have
Triggered Action Response Plans in place. And staff should be adequately trained to identify when and where parts of the
rail corridor are vulnerable – like this one, which was flood prone and there was reported high water after forecast
rainfall.
“If the right plan is in place and staff are trained and correctly equipped, then proactive rather than reactive track
inspections or closures are more likely.”
"KiwiRail should have good awareness about how well third parties – landowners, councils and the like – are maintaining
waterways that they own in the rail corridor. There's more risk of flooding if third parties don't adequately maintain
their streams and culverts. So KiwiRail needs to satisfy itself that all those waterways, have effective and up-to-date
maintenance programmes.
The Transport Accident Investigation Commission opens an inquiry when it believes the circumstances of an accident or
incident have - or are likely to have - significant implications for transport safety, or when the inquiry may allow the
Commission to make findings or recommendations to improve transport safety.
The Commission's purpose is to improve transport safety by avoiding repeat accidents, rather than by ascribing blame