An incident was reported involving the failure of a crane entry platform throughout routine operations. The report, issued by IMCA, highlights structural failure at a connection level that led to a fall incident involving the crane operator. No accidents have been sustained.
What Occurred
Whereas getting ready to start out work, the Crane Operator (Bosun) started climbing the ladder to the crane cab. Because the operator ascended, the entry platform and its protecting cage, which have been linked to the crane base, out of the blue failed. The operator fell throughout the protecting enclosure of the ladder, which partially lowered the affect. The person was shaken however not injured.
Why It Occurred
The structural failure occurred on the connection level between the entry platform and the crane base as a result of a hidden crack and corrosion on the weld seam. The platform and ladder safety construction have been hooked up by way of a flange connection, leaving solely a slim inspection hole between the flange and pedestal. This configuration made visible inspection of the weld space not possible, permitting deterioration to go undetected over time.
The crane had not too long ago been repainted by a third-party shipyard contractor. The earlier paint was not utterly eliminated throughout floor preparation, which probably hid pre-existing cracks and corrosion. These defects remained unnoticed throughout upkeep and inspection actions.
Actions Taken
No particular corrective actions have been detailed within the report. Nonetheless, the findings emphasize the necessity for improved inspection accessibility, enhanced upkeep procedures, and stricter oversight of third-party work throughout shipyard or dry-dock intervals.
Classes Realized
Be certain that all structural areas, together with these tough to entry, are totally inspected for corrosion or cracks.
Take into account design or modification enhancements that enable simpler visible and bodily inspection of crucial connection factors.
Apply non-destructive testing (NDT) methods—corresponding to ultrasonic or magnetic particle testing—the place visible checks aren’t potential.
Strengthen supervision and verification of third-party work, particularly throughout shipyard upkeep or portray operations.
Be alert to seen indicators of decay corresponding to rust or cracks and report them instantly.
Throughout floor preparation, guarantee full elimination of outdated paint and coatings to reveal any underlying injury earlier than repainting.
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Supply: IMCA
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