A sub-contractor was tipping a load of waste product from recent storm damaged roads, when the load shifted putting extreme pressure on the single lift ram. The ram broke and hit the truck cabin, smashing the rear window. No-one was hurt in the incident.
Contributing factors in the incident were:
• The load was a mixture of clay and road metals being cleaned up following recent storm damage.
• The hazard of material hanging up had been identified and an excavator was positioned next to the tipper to assist with discharging the load. This may have helped the truck not tipping on its side.
• A shortage of equipment on site led to inappropriate trucks being used to cart waste material.
In the New Zealand extractives sector there have been 82 incidents involving loss of control of vehicles, including truck roll overs, in the 9 months to March 2018.