Safety Flash 13/25

MCA has published Safety Flash 13/25

Click here to download the IMCA Safety Flash 13/25.

Positive – Vigilant watch practices

A member found examples of very vigilant watch practices. It was observed that for three days and nights during a very complex operation near to five fixed offshore platforms, none of the Officers of the Watch or bridge crew used any mobile devices whilst on duty on the bridge.

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Container door opened during transit

A third-party workshop container containing equipment was offloaded from a vessel. Whilst in transit back to the supplier the truck driver noticed the container door swing open whilst the truck was moving. The truck driver was able to pull over safely and proceeded to secure the container door with straps. As a result of the door opening, a 36kg cable reel had fallen onto the back of the lorry. The general public were exposed to a risk from our members’ operations.

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Dive chamber procedures and operations

Following a surface decompression dive to 32m on air, the diver entered the outer lock of the decompression chamber within the allotted surface interval. The chamber operator recompressed the diver in the outer lock of the chamber to 15m. Two minutes after reaching depth, the chamber operator started to vent the outer lock back to the surface. While venting the outer lock, the chamber operator realized that the diver was still in the outer lock and repressurised the diver back down to the depth. The locks were re-equalized at 15m, and the diver transferred to the inner lock and started their first 02 period. The chamber operator contacted the Supervisor. The Supervisor contacted the Superintendent, who began the emergency response procedures. The Diving Medical Officer (DMO) was consulted, and the diver was treated for omitted decompression. The diver completed the required chamber run and remained asymptomatic.

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Near miss: High voltage arc inside tether termination manifold

A high voltage arc occurred inside a ROV tether termination manifold. The ROV HPU Breaker tripped during the return of the ROV to the TMS. Initial investigation into the trip was conducted and findings indicated no hard fault was present. The ROV crew performed a reset of the breakers and restarted the ROV HPU to recover it to the TMS.

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Diver sustains laceration to right hand

The incident occurred during air/nitrox diving at 18m depth. A diver was assigned to retrieve tooling from the forward downline, which had over 2m of slack to accommodate vessel movement. The tooling was dispatched via the messenger but exceeded the acceptable depth range within the dive table due to the slack. To rectify this, a decision was made to come up slightly on the downline to bring the tooling within range.

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