Provided is an offshore structure, especially offshore wind turbine, including a platform that is connected to the seabed, especially via a foundation that carries the platform, and an appliance, wherein it comprises guiding means for guiding at least one tube or cable along a guidance path from a respective entry point at which the tube or cable enters the platform to a respective connection point at which the tube or cable is connected or connectable to the appliance.

A method of installing a cable through a duct by blowing the cable with a stream of compressed air. The method comprises dispersing a nebulized lubricant in the stream of compressed air, causing the stream of compressed air to deposit the nebulized lubricant onto the cable and to blow it into the duct. An apparatus for carrying out the method is also disclosed.

A transmission line installation system includes a transmission line conveying apparatus that operates to install a transmission line within a conduit by advancing the transmission line through the conduit. The transmission line conveying apparatus includes a plurality of components. The components include local controllers. Communication with the local controllers of the components synchronizes operation of the components during the installation of a transmission line.

A transmission line installation system includes a transmission line conveying apparatus that operates to install a transmission line within a conduit by advancing the transmission line through the conduit. The transmission line conveying apparatus includes a plurality of components. The components include local controllers. Communication with the local controllers of the components synchronizes operation of the components during the installation of a transmission line.

A rodder assembly to be moved through an underground conduit includes a tube adapted to receive fluid under pressure. In some embodiments the rodder assembly includes at least one rigid rod, and a nozzle is attached to the tube to discharge fluid from the tube.

Provided is a cable hang-off arrangement configured for mounting at the level of an elevated platform of an offshore facility and includes a pipe configured to accommodate a number of protective tubes, wherein a protective tube is configured to accommodate a transmission cable of the offshore facility; a tube end flange arranged around an end portion of each protective tube; and a hang-off terminator configured for mounting at an end of the pipe, which hang-off terminator includes an end-plate with a number of apertures for the transmission cables, and a flange connection interface for connecting to the tube end flanges. An offshore facility, and a method of securing a transmission cable arrangement at the level of an elevated platform of an offshore facility are also provided.

An electrical wire pulling device is for pulling wire through a conduit and includes a T-shaped hollow body including a side inlet transversely intersecting a path between a top inlet and a bottom outlet, and a constrictor adjacent the side inlet. A pulling line source, including a supply of pulling line, is positioned adjacent the top inlet and configured to supply the pulling line into the top inlet and out the bottom outlet. A constrictor has a tapered section tapering towards the bottom inlet. The bottom outlet is positioned adjacent the first end of the conduit. The side inlet is coupled to a fluid source to supply a fluid into the hollow body to be pushed downward towards the bottom outlet and create a pressure differential that draws the pulling line towards the bottom outlet and into the conduit.

Method for installing a cable into a duct, comprising the steps of: determining a maximum pressure, setting a leaking mode of a leaking plug to start at a leaking pressure drop equal to or lower than the maximum pressure, attaching the leaking plug to a foremost end of the cable, introducing the foremost end of the cable into the duct, supplying a pressurized liquid into the duct: at a supply port, and at a supply pressure, so that the cable is pulled by the leaking plug, before the foremost end has reached the second extremity, exceeding the leaking pressure drop at a location close to the leaking plug.

Cables having foamed polymeric jackets that are suitable for air-blown may include at least one transmission media, such as one or more optical fibers or one or more twisted pairs. A jacket may be formed around the at least one transmission media. The jacket may be formed from or include an outer layer formed from foamed polymeric material. Additionally, an outer surface of the jacket may include a random distribution of surface variations. The surface variations may include a plurality of indentions and/or a plurality of protrusions.

A containment system for installation internally along a conduit, for co-locating at least one sensing element and one or more communication media within the conduit, the containment system comprising: an elongate flexible body mountable on a wall of the conduit to extend longitudinally along the conduit, the body including: an elongate sensor cavity, extending longitudinally along the body, for receiving the at least one sensing element; and a shield portion including one or more elongate channels, extending longitudinally along the shield portion, each channel for receiving one or more communication media.