15/04/2014

Tendon connection

Heavy duty connections

Permanent tensioned mooring lines are used to limit floaters dynamic excursions and reduce mooring footprints on the seabed. TLP for instance are moored thanks to steel tendons. More recently risers tensioned by submerged buoys have also been installed. The seabed anchor is a driven or a suction pile fitted with a receptacle. The receptacle is intended to receive the end of the tensioned structure thanks to a quick connection system. Such structure is very stable against heave motion of the floater but must however allow for lateral displacement. Therefore connections are also fitted with an elastomeric structure (see LEC) to limit the bending moment in the tensioned structure and the receptacle and therefore increase the fatigue life of the structure in operation.

Field proven technology

To allow for easy installation, Hutchinson uses the rotating latch connection system (see tendon connection). This system is able to support very high tension load as well as relative inclination up to about 20°. The system has been extensively developed and tested in the last ten years.

A secondary locking system, may be proposed to fully secure the connection against unexpected load case. This system can be unlocked by means of ROV.

This connection has been found so efficient that it has also been used to replace chains to attach submerged buoys to top tensioned risers.

  

Backed by experience

Our connections have proven their reliability for more than 40 installations. Major oil Companies and Contractors have given us their confidence to manage their projects, design those highly critical components and manufacture them with the latest state of the art technologies and procedures.are often called upon to supervise installation of our equipment.