Dump truck spreading gravel tips onto side

Safety Alert Type: 
Road Building/Deactivation
1 hour northwest of Prince George
Date of Incident / Close Call: 
Company Name: 
Stones Bay Holdings Ltd.
Details of Incident / Close Call: 

Tridem end dump operator was spreading gravel in the wee hours of the day on a road that already had a traction lift. The drivers had discussed an issue that had come up and there was a plan to spread in a different area.

This driver came to the spot where he thought he should be (off the end of the previously spread load) and raised his box to spread. As he was about to spread (box raised), he came to where the previous spread had ‘actually’ finished. It was here that he encountered a ridge of gravel.

As the truck went over the ridge, the truck rocked side to side and the driver hit the control lever to lower the box; however, it was too late and the truck went over on the passenger’s side.

Root Causes: The directions were confusing and the operator misunderstood where he was to spread his next load. This was complicated by the time of day (still dark out). The operator also neglected to dump the air from his airbags. This contributed to the truck rocking and going over onto its side.

Learnings and Suggestions: 

Learnings & Follow-up: This incident was reviewed with the gravel truck operator (even though it was the last day of the gravelling season) and the Gravel Truck Procedures portion of the Company’s safety program was reviewed then too. Emphasis was placed on the importance of dumping air from airbags to help stabilize the rear of the truck while the box is raised with a load.

For more information on this submitted alert: 

For more information: Darren McQueen at (250) 996-8912

File attachments
Dump truck spreading gravel tips onto side.pdf
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