New log trailer bunks have been failing on the external welds

Safety Alert Type: 
Heavy Equipment
Location: 
Mid-Island Forest Operation (Campbell River, BC)
Date of Incident / Close Call: 
2013-09-27
Company Name: 
Western Forest Products Inc.
Details of Incident / Close Call: 

A log truck recently had new bunks installed. While being unloaded at the dryland sort, a stake extension broke off at the pivot pin weld.

These particular bunks were being monitored as there had been several welds that had previously failed.

The manufacturer was contacted concerning these weld failures. The manufacturer (Peerless) determined that these bunks had been constructed using the wrong drawing (8ft 6inch drawing was missing the internal welding detail) so the inside welds were missing on the bunks.

Please view the attached pdf for a series of photographs.

Learnings and Suggestions: 

Learnings & Suggestions:

• During Inspection: When external cracking is present, an internal inspection for missing weld(s) should be performed (see 1st photo in attached pdf) – The material is obviously not joined in the circled areas.

• When inspecting the stake extensions, one should be looking for cracking between the bushing and the extension tubing.

• With the bushing separated from the tubing the load is not stable behind the extension.

For more information on this submitted alert: 

For more information: Glen Galbraith (250) 287-5035

File attachments
New log trailer bunks have been failing on the external welds.pdf
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