IMCA Safety Flash 25-22

IMCA has published Safety Flash 25-22.

Click to download the IMCA Safety Flash 25-22 here.

MAIB: mv Teal Bay mooring fatality

The Chief officer was fatally injured when he was struck on the head by a tensioned mooring line that sprang out of an open roller fairlead. Teal Bay was loading grain when moored alongside an anchored bulk carrier. The mooring line was being used to pull Teal Bay forward and it sprang free when its lead angle became too great for the open fairlead to restrain it.

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Failure of moorings during heavy weather

Offshore winds from the northeast had increased throughout 2 February 2021 and by 1800 were between 50-55 knots. At about 1915, VALARIS DS-4’s moorings failed during storm force winds. The drill ship was blown off the jetty and drifted to the southwest until about 1923, when the anchor, which had previously been deployed as part of the VALARIS DS-4’s mooring arrangements, held. This likely prevented the drillship from going aground on an island about 400m to the west. Another similar drill ship ENSCO DS-8 remained moored alongside the jetty with tug assistance and the use of its thrusters.

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BSEE: Hazards associated with cranes on idle facilities

BSEE inspectors have observed multiple crane components in poor condition on idle facilities throughout the Gulf of Mexico. Additionally, BSEE inspectors have noted various crane components missing that were previously attached by crane cables.

After extended periods of inactivity, with little or no operator inspection and maintenance, lifting equipment deteriorates due to harsh offshore environmental conditions.

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BSEE: Unsafe crane working practices result in injury

A lead mechanic suffered a severe leg injury while performing a boom tip changeout on an offshore pedestal crane. He and his assistant deviated from the planned scope of work, failed to rig up the mid-section to the bridle prior to removing the mid-section to boom tip connector pins, and failed to use boom connector safety pins. After removing the bottom right pin, both employees assumed the bottom left pin would be difficult to remove since it was bearing the weight of the boom section. When the lead mechanic struck the remaining connector pin, it unexpectedly ejected, causing the boom to drop and pinning his leg against a sledgehammer and grating, fracturing his tibia.

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USCG: Hidden corrosion on deck fittings can cause dangerous failures

While positioning a removable hatch cover on the vessel, three of the four D-ring securing straps failed, causing an uncontrolled snap-back of the lifting sling assembly that struck the crewmember in the head. The three fractured securing straps showed similar failures with a significant amount of corrosion beneath the paint and on the underside of the straps. It is likely that just one D-ring failed initially, which would have instantly doubled the load on the two adjacent corner D-rings, both of which were apparently weakened and subsequently failed. Without proper and periodic inspection and replacement, corrosion and stress can eventually lead to deck fitting failures.

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