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Questions and Answers
What caused the serious finger injury in the incident described?
What caused the serious finger injury in the incident described?
- The worker slipped while handling the ROV.
- The worker's finger was caught between a crane wire and a recovery hook. (correct)
- The worker was struck by falling equipment.
- The crane hook pinched the worker's finger.
What method did the worker use to release the ROV hook from the crane wire?
What method did the worker use to release the ROV hook from the crane wire?
- By pulling it with a chain.
- By handing it to a colleague for assistance.
- By using a knife to cut the securing rope. (correct)
- By twisting it until it detached.
During the recovery of the ROV, what was the role of the small boat (FRC)?
During the recovery of the ROV, what was the role of the small boat (FRC)?
- To secure the crane wire while retrieving the ROV.
- To facilitate connecting the ROV emergency rigging sling to the crane hook. (correct)
- To monitor the crane operations from a distance.
- To provide medical assistance in case of an emergency.
What safety measure was taken to control the crane headache ball during the operation?
What safety measure was taken to control the crane headache ball during the operation?
What was the result of the finger injury sustained by the worker?
What was the result of the finger injury sustained by the worker?
Flashcards
ROV recovery injury
ROV recovery injury
Worker injured during emergency ROV recovery due to a finger caught between a crane wire and recovery hook.
Emergency ROV rigging
Emergency ROV rigging
Specific equipment used to recover a remotely operated vehicle (ROV) in an emergency situation by connecting to a crane.
Crane wire entanglement risk
Crane wire entanglement risk
The danger of worker injury due to entanglement with crane wires and recovery hooks during ROV recovery procedures.
Safety procedures violation
Safety procedures violation
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Secondary worker role
Secondary worker role
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Study Notes
Safety Flash 23/24 - November 2024
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LTI: Finger Injury During Emergency Recovery of ROV
- A worker suffered a finger injury caught between a crane wire and an ROV recovery hook during an emergency ROV recovery.
- A small boat (FRC) was used to connect the recovery rigging to the crane hook.
- The worker's task was to release the ROV hook from the crane wire, which resulted in their finger being pinched.
- Injury caused an amputation to approximately the nail bed of the left ring finger.
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What Went Right
- A thorough toolbox talk including all relevant personnel.
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What Went Wrong
- The step of releasing the ROV hook from the crane wire was not identified or risk-assessed.
- The emergency recovery steps were not sufficiently detailed in the plan or procedure.
- Fault finding and repair of the latching mechanism on the LARS (Lifting and Recovery System) was not attempted before the emergency recovery.
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Actions Taken
- Reviewed and updated the emergency recovery procedure and risk assessment.
- Ensured sufficient detailed planning, including risk assessments and task evaluations, were conducted for emergency operations.
- Established regular training in various emergency recovery scenarios using the FRC (small boat).
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BSEE: Recurring Hand Injuries from Alternative Cutting Devices
- Incident 1: A worker was using a damaged cutting device (blade exposed), resulting in a laceration between the thumb and index finger.
- Incident 2: A worker sustained a laceration to their hand due to a missing blade guard on a cutting device.
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Actions to Take
- Always follow safe work practices when using alternative cutting devices.
- Ensure proper maintenance and discard defective devices.
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Hot Work Performed Outside of Permit-to-Work (PTW) Boundary Limit
- Sparks and hot work discharge fell onto scaffolding boards and a 600V HV electrical cable, causing burn marks.
- There was no fire watcher available in the vicinity.
- Less than adequate risk perception.
- Inadequate risk assessment and communication.
- No proper communication about the work being performed.
- No permission was sought prior to starting the hot work.
- Assumptions about the hot work permit boundaries.
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Vital Safety Information (Height of Vehicle) Found Incorrect
- A worker encountered an overhead structure while moving a vehicle that had an incorrect stamped traveling height.
- The actual traveling height was different from the stamped height.
- Three other trucks in the same fleet had similar incorrect height measurements.
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NTSB: Crane Wire Failure
- A crane wire on a cargo vessel parted while offloading a wind turbine nacelle.
- The nacelle (69 tonnes) fell back into the cargo hold.
- Estimated damage was US$3-5 million.
- The load was 86% of the crane's maximum rated capacity. The lift was made within 19 meters of the crane base, which was certified by a third-party contractor.
- There were no fatalities or injuries, and no pollution.
- Post-incident inspection found no evidence of issues with the hoisting equipment or the crane.
- Probable cause: undetected corrosion and wear in the hoisting wire strands.
- Examination revealed external corrosion and pitting in the wire ropes, necessitating a closer look at maintenance procedures for wire rope.
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