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Positive communication failures result in collisions

haul truck collision with grader

A haul truck collision with grader at an open cut coal mine has been reported by the NSW Resources Regulator.

According to the report, while working on a haul road, a grader operator performed a u-turn. The position 2 tyre of the grader contacted the position 3 tyre of a haul truck that was overtaking the grader at the time. The grader operator did not look to see if the road was clear before initiating the u-turn. The haul truck operator had followed the correct procedure for overtaking.

The NSW Resources Regulator said mine operators should develop, review and update procedures that manage the interaction of all mobile plant operating on site, including requirements for proximity detection and positive communication. Mines should consider including protocols for graders to conduct U-turns in their traffic rules. The installation of passing indicators on graders could facilitate positive communications, allowing trucks to safely pass.

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READ RELATED A collision between dozer and haul truck

The NSW Resources Regulator has reported a dozer and haul truck collision incident occurred at an open cut coal mine.

According to the report, a dozer and a haul truck collided at a tip head. Both vehicles were reversing at the time of the incident. A preliminary investigation suggests that the truck operator did not follow the site requirement for positive communications with the dozer operator.

The Regulator said machine operators should not rely on the experience or previous movements of other operators as a substitute for positive communications. Lack of positive communication has been the root cause of many incidents and mine operators must consider higher-order controls including proximity detection. Mine operators should consider periodic refreshers in positive communications protocols for operators using mobile equipment.

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AMSJ April 2022