ROV EMERGENCY EJECT ATTACHMENT

A situation may arise during a deep sea ROV operation to have a hydraulic failure in the middle of an action like a cutting process. 

• The attachment may be " T handle " operated or a more solid or bolted on connection.
• The failure may result in the entrapment of the tool, in turn the ROV, its 1 to 2 mile long abilicle and the ship that deployed it.  At this point you would like to have a second ROV to help the first one.

• The release adaptor is designed to part sacrifice its fittings and leave them on the body of the tool. 
• The main body stays with the ROV deployment arm. 
• The fittings are designed for this purpose and can be reassembled afterwards. 

The force required to part the emergency attachment release adaptor can be pre-defined and calibrated ideally to mid point between the weight of the tool and the max limit of the umbilical or at least twice the cutter weight. 

Example: The cutter tool 15Kg,  the umbilical pull limit 50 to 60Kg,   unit set to 30Kg for release

This setting will ensure you do not have the cutter detach during unpowered decent.

The unit will not part if hydraulic pressure is present until its destruction. 

If you have electrical power only, you may be able to ROV maneuver 

with enough force for the adaptor to part.

If all else fails, pulling on the umbilical, the weakest link should be the adaptor.