Articulated Tipper Overturn 
        
    
    
    
        ACTIVITY:
        TRANSPORT & LOGISTICS / DELIVERY
     
    
 
         
    
        TITLE
        Articulated Tipper Overturn
        COUNTRY OF ORIGIN
        
     
    
        
            
WHAT HAPPENED
        
        An articulated tipper was delivering aggregate (dust) to a site, when the tipper section collapsed during discharge of the material.  The tipper body fell onto an adjacent storage bay wall, which prevented the vehicle tractor unit from overturning. Whilst no person was injured, the site loading shovel was operating in the area when the collapse occurred. Damage was limited primarily to the trailer unit.
Initial investigations indicate that the main cause of this incident was poorly loaded material at the supplying site. The load is believed to have been loaded more to the front and near-side of the tipper, causing the imbalance when the tipper ram was extended.
Tipper overturns are not uncommon within the industry. A recent incident in another quarry nearly ended in a fatality when a tipper overturned onto an adjacent vehicle crushing the cab.
     
    
    ACCIDENT / INCIDENT IMAGES
    
        
        
        
        
        
    
    
        
        
        
        
        
    
 
 
LEARNING POINTS / ACTIONS TAKEN
  
The following precautions should be in place to prevent a recurrence:
? Suitable area to tip – Are site tipping   
    areas clearly demarcated, with 
    appropriate notices/warning signage, 
    and located on suitable firm level 
    ground? Are tipping areas inspected 
    and maintained? Are tipping areas 
    free from overhead obstructions such 
    as power or telephone cables? Do 
    drivers check the tipping area? Are 
    drivers aware of the risks of overturn 
    and the need for firm level tipping 
    areas?
? Safety zone around tipping  
    operations – Are arrangements in 
    place to exclude people and other 
    vehicles from the immediate area 
    during tipping? Are there rules in 
    place and have they been clearly 
    communicated? Do drivers know not 
    to tip unless the area is clear?
? Correct loading of tippers – Do mobile 
    plant operatives/drivers ensure that 
    loads are loaded evenly? Are they 
    aware of the potential consequences 
    of uneven loading? Are loads checked 
    by the driver prior to leaving to ensure 
    even loading? 
 
    
LEARNING POINTS / ACTIONS IMAGES
  
                                            
                                            
                                                                                 
                                            
                                           
 
    
    
     
        
        
            ACTIVITY:
            TRANSPORT & LOGISTICS / DELIVERY
         
        
     
    
 
         
                                            
                                                                                  
                                            
                                           
    
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