A drill rig was tramming up a ramp for a blast evacuation when a hydraulic hose ruptured. A trail of leaking oil was on the ground until the drill rig stopped due to a low oil level trip. The operator investigated the problem and saw a flame around the exhaust area. The exhaust and turbo had heat wrapping. The operator activated the fire suppression system manually and used a dry powder fire extinguisher to extinguish the fire. A water cart was called but not used.
Recommendations to industry:
When a fire occurs, mine operators must conduct a thorough investigation by a competent person to determine the:
- fuel source and heat sources
- surface temperature value
- cause of the fire
- controls to prevent re-occurrence such as reducing engine component surface temperatures and segregating fuel sources from areas of high temperature, and fire safety inspections
- training of workers to identify fire risks such as fuels or oil leaks or worn hoses
- review of the fire risk assessment for the item of plant.
Mine operators should report the issue to the original equipment manufacturer.