A fire occurred on an integrated tool carrier in an underground metalliferous mine.
The fire occurred within the turbocharger and was extinguished by the onboard fire suppression system. The cause of the fire has been attributed to a turbocharger oil line failure and is being investigated by the original equipment manufacturer (OEM).

The failure of oil and fuel lines near exhausts and turbo chargers are well known causes of fire. Maintenance systems must account for this when setting inspection frequencies.

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Loader over-balance incident
A Volvo L250H loader was delivering a bucket full of sand to an aggregate blending stockpile. As the loader approached the mixing point the operator began to raise the bucket in preparation to unload the bucket. The center of gravity shifted too far forward,  beyond the limits of the counterweights’ effectiveness and the loader slowly came to rest on its bucket and front wheels, the rear wheels being in the air. The body of the loader was slightly off center to the operator’s right when it experienced the overbalancing event. A bund was established behind the loader to avoid it tipping, and the operator was able to right the loader.

The operator had picked up the same volume of material as per previous loads, however heavy rain during morning tea break could have contributed to the heavier load.

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Hazardous Area - Assurance of conformity of equipment
An inspection at a ‘Drill Rig’ Operating Plant identified electrical motors installed within a hazardous zone that were not ANZEx or IECEx (International Conformity Assessment Scheme) certified.

There was no evidence that a conformity assessment, by a qualified assessor, had been undertaken for the equipment certifying that the devices had met the basic requirements for an ANZEx or IECEx certificate. 

The ‘Operating Plant’ safety management system did included detailed requirements for electrical installations within a hazardous zone to comply with relevant Australian Standards.

Hence

  • The installation did not conform to the requirements of the safety management system implemented for the Operating Plant.
  • An acceptable level of risk has not been met.

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