Inspection and maintenance needed to uncover failed weld on truck

Safety Alert Type: 
Heavy Equipment
Location: 
Canfor Polar Mill yard at Bear Lake, BC (northwest of Prince George)
Date of Incident / Close Call: 
2011-03-23
Company Name: 
Stones Bay Holdings Ltd.
Details of Incident / Close Call: 

While getting unloaded at the mill yard, the saucer broke away from the log truck bolster when the Wagner machine lifted the load. There was no extra force applied by the loader, concluding this was not the cause of the incident. A cracked weld was found to be the reason for the saucer to break free from the bolster. A lack of preventative maintenance and proper inspection processes were to blame for the failed weld.

Where the crack originated was difficult to see due to a build up of grease around the base of the saucer (high stress areas must be thoroughly cleaned prior to inspection). The normal force applied when the Wagner grappled the load broke the weld the rest of the way around.

Learnings and Suggestions: 

With proper pre and post-trip inspections, this incident could and would have been avoided.

For more information on this submitted alert: 

Darren McQueen or Nicole Allan 250-996-8912

File attachments
Inspection_and_maintenance_needed_to_uncover_failed_weld_on_truck.pdf
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