Patent ID: 6540208
Filing Date: 2003-04-01
Classification: G02B,H02G

Abstract:
A method for at least one of introduction and removal of a cable (300) in conduits (500) for passage of cables within which a current of water is conveyed, comprising:subjecting the cable (300) to a thrust force along with a pressure of water that controls its speed of progression; and regulating said thrust force and the pressure of water flowing in the conduits so as to maintain a constant water flow rate within the conduits (500) in order to enable the installation of cable having a cable fill rate that can reach 90 percent of the conduits and the conduits forming a winding course on a length of over 2000 m; wherein the cable (300) is a fiber-optic cable, and in that the pressure of the water flowing in the conduits (500) is regulated in such a way that it does not exceed 30 bars and the speed of progression of the cable, driven by the thrust force, is regulated in such a way that it does not exceed 40 m/min, in order to keep the water flow rate constant, and less than or equal to 80 l/min, throughout a course defined by the conduits (500).