Safety and efficiency of running your tires go hand in hand. With that in mind we are always looking for ways to help our customers get more life out of their tires and do it as safe as they can. Below is a safety bulletin we found that was published by the Queensland Government – Department of Natural Resources and Mines. We hope you find this information helpful!
The mining industry is currently facing a worldwide shortage of Large Earth Moving Tyres.
Due to this shortage it is inevitable that operating companies will be seeking to maximise tyre life and to review tyre
management and maintenance practices. This maximisation is not unreasonable but it will be seen to leave tyres in
service that, before the shortage, would have “normally” been taken out of service based on appearance rather than actual
condition. Therefore these tyres that were previously taken out of service may have still been ‘fit for purpose’ and may
not have achieved their full potential service life. This change in our industry is a significant change and will throw up
challenges that need to be effectively managed. The application of change management practices should form part of the
strategy to address this emerging issue.
A move to extending tyre life can be safely managed if appropriate resources and knowledge are applied.
Issues to Consider:
process should ensure that the current controls are strengthened and new controls identified.
tyre condition. As the move to extend tyre life continues, the current inspection regimes for what was
considered “normal” may need to be more intensive (e.g. daily as against weekly), and the level of expertise
engaged for the inspections may need to be increased accordingly. (Refer to CMSH Regulation section 71
(a) (b) (i), MQSH Regulation section 108) It is beneficial to expand detailed training in tyre condition
inspection to operators.
a meaningful outcome can be derived and implemented. Inspection for the sake of inspection will not
contribute to extending tyre life.
role in any strategy to safely extend tyre life and must assume high importance.
o Eliminating or minimising reverse camber corners.
o Haul road grade, curvature and undulation.
o Tyre specification and suitability for the hauling route.
o Appropriate road construction materials and running surface material.
o Minimising spillage through design.
o Spillage is dealt with quickly.
o Haul road running surfaces are regularly graded.
o An effective surface water management program is in place.
reversing onto production material at loading faces all have a detrimental effect on tyre life and will see the
tyre removed earlier from service due to damage rather than full service life wear. Regular ‘dozing of these
areas will have a huge positive impact.
especially in wet conditions.
passenger car or light truck, tyre baldness is not necessarily considered to be a discard criteria by the tyre
manufacturer. Most manufacturers will recommend repositioning of the worn tyre to position 4 or 5 (inner
tyres of the rear duals) and increased monitoring until the discard criteria as specified by the OEM are
reached. If this strategy is adopted, the level of monitoring needs to be substantially increased and those
carrying out the monitoring must have the requisite knowledge to make the correct informed decision
regarding changing tyre position and ultimate discard.
weapon in meeting this forthcoming challenge to our industry. Operators are in the best position to
extend tyre life.
present. Use of knowledgeable repairers is essential to inspect and report expected tyre life after repair and
heed recommendations regarding the placement of the tyre on the truck (e.g. position 4 as opposed to
As can be seen from the above issues, and not all have been discussed here, effective tyre life management requires
many inputs and both the production and maintenance streams have important roles to play in safely extending tyre life
in our operations.
Running tyres to destruction should not be an acceptable strategy to extend tyre life.
NO. 54 Issued 27/04/2005
Mines Inspectorate, Safety and Health
Level 5 Mineral house, 41 George Street, BRISBANE
GPO Box 2454 BRISBANE QLD 4001 Australia
Phone: +61 (07) 3237 1041 Fax: +61 (07) 3237 1242
Vision: â€˜Our Industries Free of Safety and Health Incidentsâ€™