Mines safety alert no. 345 | 26 July 2017 | Version 1

Truck driven from Go-line with turbo timer activated

What happened?

An off-highway truck was in shutdown mode with the https://turbominesgame.com/ turbo timer activated. During this time, an operator entered the car cabin and drove the truck from the Go-line onto the haul highway. A short time later the truck engine shutdown when the turbo timer timed out. The park brakes utilized and the truck skidded for over 50 metres, coming to a cease with a entrance wheel on top of a bund.

There was no secondary steering accessible because the ignition switch was in the OFF position.

How did it occur?

This incident occurred because the aftermarket turbo timer didn't have the performance to be linked to the applying of the park brake to shut down the engine if the park brake was released.

Recommendations

Trucks which are fitted with aftermarket turbo timers needs to be checked to see whether or not they are often driven while the turbo timer is activated. Risk administration practices together with change management ought to be used when considering whether or not the next hazard controls ought to be installed:

- Fitting a visible alarm that exhibits the truck is in turbo timer mode
- Arranging for the engine to be instantly shut down if the park brake is released when the turbo timer is active.
Investigations are ongoing and further info could also be published because it turns into accessible. The data on this publication is what is thought at the time of writing.