A current IMCA Security Flash focuses on an incident through which a carry bag acquired launched unintentionally from crane hook.
What occurred?
Throughout a saturation dive, the deck crew related a carry bag to the crane to ship it right down to the diver. When the crane hook went by means of the splash-zone, the carry bag got here free from the crane hook and floated on the floor. Because the vessel was in DP mode there was the potential for injury to the vessel´s thrusters and potential lack of the vessel’s place – whereas divers have been subsea. No injury or hurt occurred, however the occasion had the potential to trigger appreciable injury.
What went proper
Deck crew observed the hazard and knowledgeable the bridge and dive management instantly. The present pushed the carry bag away from the vessel.
What went flawed
The carry bag was not appropriately connected to the crane:
The carry bag was not folded appropriately;
It was related to the crane by means of certainly one of its webbing slings as a substitute of being related in such a method that might forestall the carry bag from being positively buoyant;
The constructive buoyancy of the carry bag allowed it to slip out by means of the security hook passing the self-locking latch.
What have been the causes
IMCA member recognized the next causes:
Lack of know-how: Insufficient secure rigging follow;
Procedures not applied: Double-check rigging earlier than sending it subsea;
Low-risk notion of the duty.
Classes and actions
Guarantee thorough danger evaluation and double-checking of the means for subsea lifting, earlier than beginning work. Our member beneficial using a software basket.
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Supply: IMCA
