Untitled Quiz

Crane Failure During Load Test

• A major crane failure occurred during a load test exceeding maximum load by 10%.
• The crane's main block wires broke, causing the testing load (two barges) to fall into the water.
• The vessel listed approximately 9 degrees due to the loss of load.
• No injuries were reported.

Mechanical Failure

• Clutch pads on the main hook double drums malfunctioned.
• Two drums (#3 & #4, starboard side) slipped, causing a torque loss.
• The other two drums (#5 & #6, port side) continued to pull, leading to an unbalanced load.
• This imbalance and stress exceeded the maximum breaking load of the wire, resulting in wire breakage.
• Clutch pad failure was linked to inadequate burnishing of the new clutch pads.

Lessons Learned

• Perform clutch pad burnishing per manufacturer's procedures.
• Implement a clutch torque test to verify the holding torque.
• Update planned maintenance procedures to include pad burnishing and torque testing.
• Thoroughly revise the crane's Failure Mode and Effects Analysis (FMEA), including input from competent personnel.

AC Vent Unit Cover

• An AC vent unit cover fell from a capstan electrical cabinet, approximately 1.7 meters.
• No injuries occurred but there was potential risk for nearby individuals.
• The cover fell onto a cable and a brace.
• The failure was attributed to galvanic corrosion in the securing rivets of the aluminium/stainless steel assembly.

Actions

• Inspect all similar cabinets and replace incompatible fixings.
• Update dropped object checklists and work orders.
• Verify all safety securing lanyards and equipment for fall hazards.

Dropped Sheave and Clump Weight

• A sheave weighing 204 kg fell 64 meters.
• A clump weight weighing 700 kg also fell.
• The incident occurred during wind turbine installation activities.
• The weight caused damage to equipment.
• The probable cause was the crane operator performing multiple tasks simultaneously and lack of supervision on the tugger wire and clump weight.
• There were no injuries.

UK HSE Incident- Rig Decommissioning

• A worker died and another was seriously injured during a gas rig decommissioning operation.
• The incident involved removing a heavy skirt pile which collapsed onto a mobile elevating work platform (MEWP).
• The safety assessment for the pile removal was inadequate and included no safe systems of work for the removal.
• This incident highlights the need for strong controls when demolishing complex structures, particularly in the offshore sector.

Positive Rescue

• A surfer in distress was rescued by a pilot boat crew.
• The crew promptly contacted the surfer, deployed a rescue ramp, and safely brought the surfer aboard.
• They subsequently informed the relevant authorities and returned to port, enabling the surfer's safe transfer to the authorities.
• The rescue highlights the importance of vigilant watches, regular drills, equipping vessels with appropriate safety gear, and robust communication protocols.