Dec 282012
 
A very slight hissing noise was heard after unplugging the battery power cable indicating that the air bottle had been activated.

A very slight hissing noise was heard after unplugging the battery power cable indicating that the air bottle had been activated.

Flotation righting bags are an essential safety component of Fast Rescue Craft, FRC. The experience of a Marine Safety Forum, MSF, member described in a recent safety alert suggests that it might be a good idea to check the air cylindre and its connections.

Says MSF: “The fast rescue craft on an anchor handler was being prepared for an MOB drill with the rig. A crew member was attempting to gain safe access to the FRC to unplug the battery power charge by holding onto the A frame. In doing so, he had inadvertently disturbed an exposed section of the activation cable for the
floatation righting bag.

The exposed cable for the righting bag exited the protective tubing on the A frame and connects to the trigger mechanism of the air bottle.

A very slight hissing noise was heard after unplugging the battery power cable indicating that the air bottle had been activated. Closer inspection revealed that the activation cable could be wriggled to stop the flow of air.

Since air had been partly discharged, it was decided to pull the cable and activate the righting bag fully.

FRC Make and Model: MARE GTC 700 Rigid Fast Rescue Craft.

The exposed section of activation cable exiting the protective tubing and leading to trigger mechanism was accidently disturbed when crew member was gaining safe access by holding onto the A-frame resulting in
partial activation of the trigger mechanism

– Section of righting bag activation cable where it exist the protective tubing and connects to trigger mechanism is exposed and can be easily disturbed when gaining access via the A-Frame.

Minimise section of exposed activation cable by installing a small section of protective plate.
– Class-DNV was notified of the incident and information shared with other vessels in the fleet with similar type FRC

 

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