Patent ID: 8800462

Claim:
A traction method for an operating line of a floating production unit, the operating line having at least one end chain portion which attaches to a work station on the unit, the method comprising the steps of: setting up on the unit at least one work station, which is engaged by the operating line and comprises a top sheave fitted to a movable support, and a chain stopper for locking the operating line; attaching the end chain portion of the operating line to a socket of a main cable; reeling in the main cable, using a winch, to bring the socket of the main cable up to the sheave; locking the operating line with the chain stopper; slackening the main cable to reduce pull on the main cable, and moving the support of the sheave to bring the sheave closer to the chain stopper; reeling in the main cable to run the socket of the main cable through the sheave; and once the socket of the main cable has run through the sheave, releasing the operating line from the chain stopper, and reeling in, using the winch, the main cable and the operating line connected to the main cable, to set the operating line to a given tension.