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Incorrect coupling between fifth wheel and bull pin causes fuel tanker incident

What happened - icon

What happened?

A fuel tanker truck slid off the road while on route to an aviation depot.

The tank hit the right rear of the truck cab and fell onto the road – landing on the opposite side.

An oncoming vehicle crashed into the tank.

Damage was caused to the vehicle, road and the curb wall.

Emergency services were called. A sand dyke was created to contain the minor fuel spill and adsorbent pads used for clean-up.

The fuel tanker truck after sliding off the road. An oncoming vehicle has a broken bonnet and front window after the collision.
What happened - icon

Why did it happen?

Equipment failure: the compression spring in the yoke shaft was too loose causing the adjustment nut to be stiff.

The coupling between the fifth wheel and bull pin was done incorrectly due to inadequate training/instructions.

Adjustment nut was not flush against the front plate.

Inadequate maintenance/inspection of the fifth wheel.

Fifth wheel showcasing
What happened - icon

What did they learn?

Carry out a safety stand down – all haulers should check their fifth wheel and bull pin are as per manual and specifications.

Ensure all haulers update their maintenance plan including fifth wheel and bull pin maintenance.

Organise drivers’ training session focusing on accident, causes, and action plan including maintenance and three visual inspection:

  • Inspection of the lock jaws to ensure they are completely closed around the bull pin.
  • Check if the release handle/loop is fully retracted into the lock position.
  • Visually verify that the lock indicator nut is flush against the top plate.

Ensure mechanics and drivers are fully trained on the equipment – especially where is high potential with severe consequences.

What happened - icon

Ask yourself or your crew

Have you ever been in a similar road accident? What was the cause?

Are you fully trained to operate the equipment you need to use today?

Did you do the three visual inspection today? What are the steps?

How can you ensure that the equipment maintenance plan is up to date?

  • What happened?

    A fuel tanker truck slid off the road while on route to an aviation depot.

    The tank hit the right rear of the truck cab and fell onto the road – landing on the opposite side.

    An oncoming vehicle crashed into the tank.

    Damage was caused to the vehicle, road and the curb wall.

    Emergency services were called. A sand dyke was created to contain the minor fuel spill and adsorbent pads used for clean-up.

    The fuel tanker truck after sliding off the road. An oncoming vehicle has a broken bonnet and front window after the collision.
  • Why did it happen?

    Equipment failure: the compression spring in the yoke shaft was too loose causing the adjustment nut to be stiff.

    The coupling between the fifth wheel and bull pin was done incorrectly due to inadequate training/instructions.

    Adjustment nut was not flush against the front plate.

    Inadequate maintenance/inspection of the fifth wheel.

    Fifth wheel showcasing
  • What did they learn?

    Carry out a safety stand down – all haulers should check their fifth wheel and bull pin are as per manual and specifications.

    Ensure all haulers update their maintenance plan including fifth wheel and bull pin maintenance.

    Organise drivers’ training session focusing on accident, causes, and action plan including maintenance and three visual inspection:

    • Inspection of the lock jaws to ensure they are completely closed around the bull pin.
    • Check if the release handle/loop is fully retracted into the lock position.
    • Visually verify that the lock indicator nut is flush against the top plate.

    Ensure mechanics and drivers are fully trained on the equipment – especially where is high potential with severe consequences.

    What learn - icon
  • Ask yourself or your crew

    Have you ever been in a similar road accident? What was the cause?

    Are you fully trained to operate the equipment you need to use today?

    Did you do the three visual inspection today? What are the steps?

    How can you ensure that the equipment maintenance plan is up to date?

    Ask your crew - icon
Published on 27/06/20 2752 Views

A fuel tanker truck slid off the road while on route to an aviation depot. The tank hit the back of the truck cab and fell onto the road – landing on the opposite side.