Vehicle stabilisers and outriggers - Workplace Health and Safety ...
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Home > Resources and campaigns > News > Safety alerts > Vehicle stabilisers and outriggers
Vehicle stabilisers and outriggers Published: 10 February 2014 Last updated: 10 February 2014 Purpose Background Contributing factors Action required Further information
Purpose The purpose of this safety alert is to highlight the risks associated with stabilisers and outriggers on trucks when travelling on public roads.
Background A manually-operated stabiliser on a truck unintentionally extended while travelling on a public road and fatally struck a cyclist. Similar incidents have occurred elsewhere in Australia and internationally. Stabilisers and outriggers have many configurations depending on the application and are used to minimise the risk of toppling when the centre of gravity of the combined load and vehicle is outside the support base of the vehicle. Outriggers lift the vehicle's wheels off the ground while stabilisers do not. Examples of mobile plant using stabilisers or outriggers include (see photographs 1 to 3): mobile cranes truck mounted elevating work platforms vehicle loading cranes mobile concrete placement booms mobile amusement rides.
Photograph 1: Vehicle loading crane with stabilisers on truck
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Photograph 2: Mobile crane with outriggers
Photograph 3: Mobile concrete placement boom with outriggers
Contributing factors Manually operated stabilisers rely solely on the locking mechanism to ensure the stabiliser remains in the travel position. The stabiliser can extend due to: the stabiliser not being returned to and effectively locked into the travel position the stabiliser restraining mechanism failing incidental forces, such as, when the truck goes over a bump or around a corner. Hydraulically operated stabilisers still require effective restraint during road travel, but they are less likely to extend due to the resistance afforded by the hydraulic system.
Action required For safety, make sure: components of the stabiliser or outrigger travel restraint locking mechanism are fit for purpose, inspected and maintained in accordance with the manufacturer's recommendations and/or guidance provided in relevant technical codes and standards workers who drive the vehicles are provided with appropriate instruction, training and supervision regarding the proper use of the stabiliser or outrigger and the associated locking mechanism.
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The training should relate to the specific make and model of plant and be documented management consider installing a warning system (e.g. a warning light in the cab) to indicate the retracted or extended position of stabilisers.
Further information Visit www.worksafe.qld.gov.au or call the WHS Infoline on 1300 369 915. How to Manage Work Health and Safety Risks Code of Practice 2011 Managing Risks of Plant in the Workplace Code of Practice 2013 Mobile Crane Code of Practice 2006.
Last updated 12 February 2014
© The State of Queensland (Department of Justice and Attorney-General) 2009-2013. The State of Queensland makes no statements, representations, or warranties about the accuracy or completeness of, and you should not rely on, any information contained in this document.
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19/05/14 11:04 AM
http://www.deir.qld.gov.au/workplace/publications/alerts/vehi...
Home > Resources and campaigns > News > Safety alerts > Vehicle stabilisers and outriggers
Vehicle stabilisers and outriggers Published: 10 February 2014 Last updated: 10 February 2014 Purpose Background Contributing factors Action required Further information
Purpose The purpose of this safety alert is to highlight the risks associated with stabilisers and outriggers on trucks when travelling on public roads.
Background A manually-operated stabiliser on a truck unintentionally extended while travelling on a public road and fatally struck a cyclist. Similar incidents have occurred elsewhere in Australia and internationally. Stabilisers and outriggers have many configurations depending on the application and are used to minimise the risk of toppling when the centre of gravity of the combined load and vehicle is outside the support base of the vehicle. Outriggers lift the vehicle's wheels off the ground while stabilisers do not. Examples of mobile plant using stabilisers or outriggers include (see photographs 1 to 3): mobile cranes truck mounted elevating work platforms vehicle loading cranes mobile concrete placement booms mobile amusement rides.
Photograph 1: Vehicle loading crane with stabilisers on truck
1 of 3
19/05/14 11:04 AM
Print-friendly - Vehicle stabilisers and outriggers - Workplace...
http://www.deir.qld.gov.au/workplace/publications/alerts/vehi...
Photograph 2: Mobile crane with outriggers
Photograph 3: Mobile concrete placement boom with outriggers
Contributing factors Manually operated stabilisers rely solely on the locking mechanism to ensure the stabiliser remains in the travel position. The stabiliser can extend due to: the stabiliser not being returned to and effectively locked into the travel position the stabiliser restraining mechanism failing incidental forces, such as, when the truck goes over a bump or around a corner. Hydraulically operated stabilisers still require effective restraint during road travel, but they are less likely to extend due to the resistance afforded by the hydraulic system.
Action required For safety, make sure: components of the stabiliser or outrigger travel restraint locking mechanism are fit for purpose, inspected and maintained in accordance with the manufacturer's recommendations and/or guidance provided in relevant technical codes and standards workers who drive the vehicles are provided with appropriate instruction, training and supervision regarding the proper use of the stabiliser or outrigger and the associated locking mechanism.
2 of 3
19/05/14 11:04 AM
Print-friendly - Vehicle stabilisers and outriggers - Workplace...
http://www.deir.qld.gov.au/workplace/publications/alerts/vehi...
The training should relate to the specific make and model of plant and be documented management consider installing a warning system (e.g. a warning light in the cab) to indicate the retracted or extended position of stabilisers.
Further information Visit www.worksafe.qld.gov.au or call the WHS Infoline on 1300 369 915. How to Manage Work Health and Safety Risks Code of Practice 2011 Managing Risks of Plant in the Workplace Code of Practice 2013 Mobile Crane Code of Practice 2006.
Last updated 12 February 2014
© The State of Queensland (Department of Justice and Attorney-General) 2009-2013. The State of Queensland makes no statements, representations, or warranties about the accuracy or completeness of, and you should not rely on, any information contained in this document.
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19/05/14 11:04 AM
