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What happened?
A near miss incident occurred when an adjustable wrench, weighing 0.8 kg (1.8 lbs.), was accidentally dropped from a height of 35 metres (115 ft.) during work on the crown block of a drill rig.
The wrench, which was secured with approved safety wire and a carabiner hook, became detached during the work, falling towards the drill floor.
It likely bounced off the traveling block, passed through the V-door, and landed on the riser deck outside the barriers.
The work was stopped, and the incident was reported.
Fortunately, there were no injuries to personnel as a result of this incident.
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Why did it happen?
Despite the tools being checked and secured before work commenced, and the presence of a work permit, the wrench detached and dropped.
The investigation highlighted that the carabiner hook's locking nut was not in the proper locking position and tight, leading to the detachment of the wrench.
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What did they learn?
Always ensure that tools are not only checked and secured before work begins but also throughout the work process to prevent accidents.
When using carabiner hooks, it is critical to check that the locking nut is properly in place and tightened to avoid unintended detachment.
Evaluate alternative securing according to best practice recommendations.
When working at height, always consider the risks and adhere to rules and procedures to minimise risk.
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Ask yourself or your crew
How can an event like this occur on our site? What safety measures do we have in place to avoid such incidents?
How can you ensure continuous adherence to safety protocols, especially during high-risk operations like work at height?
Can you share any previous experiences where tools or equipment were secured, but incidents still occurred during work?
What additional safety measures can we implement to prevent dropped object incidents in our workplace?
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What happened?
A near miss incident occurred when an adjustable wrench, weighing 0.8 kg (1.8 lbs.), was accidentally dropped from a height of 35 metres (115 ft.) during work on the crown block of a drill rig.
The wrench, which was secured with approved safety wire and a carabiner hook, became detached during the work, falling towards the drill floor.
It likely bounced off the traveling block, passed through the V-door, and landed on the riser deck outside the barriers.
The work was stopped, and the incident was reported.
Fortunately, there were no injuries to personnel as a result of this incident.
Why did it happen?
Despite the tools being checked and secured before work commenced, and the presence of a work permit, the wrench detached and dropped.
The investigation highlighted that the carabiner hook's locking nut was not in the proper locking position and tight, leading to the detachment of the wrench.
What did they learn?
Always ensure that tools are not only checked and secured before work begins but also throughout the work process to prevent accidents.
When using carabiner hooks, it is critical to check that the locking nut is properly in place and tightened to avoid unintended detachment.
Evaluate alternative securing according to best practice recommendations.
When working at height, always consider the risks and adhere to rules and procedures to minimise risk.
Ask yourself or your crew
How can an event like this occur on our site? What safety measures do we have in place to avoid such incidents?
How can you ensure continuous adherence to safety protocols, especially during high-risk operations like work at height?
Can you share any previous experiences where tools or equipment were secured, but incidents still occurred during work?
What additional safety measures can we implement to prevent dropped object incidents in our workplace?
A near miss incident occurred when an adjustable wrench, weighing 0.8 kg (1.8 lbs.), was accidentally dropped from a height of 35 metres (115 ft.) during work on the crown block of a drill rig.
