Abstract: An armoured power cable is disclosed. The cable includes: at least one core comprising an electric conductor; and an armour surrounding the core, wherein the amour comprises at least one layer made of a metallic material having a tensile strength of at least 400 MPa and showing a weight loss from 0.01% to 0.1% after 30 days of exposure to a corrosive solution according to ASTM G3172 (2004). The cable has mechanical properties suitable for its handling and installation, for example, underwater, and its armour can be at least partially degraded over time after installation due to corrosion exerted by corrosive agents present in the installation environment, without impairing the mechanical properties of the other cable portions and without impairing its electric performance.

Abstract: An energy cable comprises at least one cable core comprising an electric conductor, a crosslinked electrically insulating layer, and particles of a zeolite system comprising at least a first zeolite and a second zeolite placed in the cable core. A method for extracting crosslinking by-products from a cross-linked electrically insulating layer of an energy cable core comprises manufacturing the energy cable core comprising particles of the above-said zeolite system, heating the energy cable core up to a temperature causing migration of the crosslinking by-products from the crosslinked electrically insulating layer, and placing a metal screen around the energy cable core.

Abstract: The present invention relates to an energy cable comprising a cable core comprising an electric conductor and a crosslinked electrically insulating layer, wherein the cable core further comprises a microporous material having a bimodal pore volume distribution with a first peak of the distribution having a maximum at a pore diameter value within the range 5.5-6.5 ? and a second peak of the distribution having a maximum at a pore diameter value within the range 7.5-8.5 ?, the maximum values of the first and the second peak corresponding to an incremental pore volume of at least 4×10?3 cm3/g. The present invention also relates to a method for extracting methane crosslinking by-products from a crosslinked electrically insulating layer of an energy cable.

Abstract: The present disclosure relates to an energy cable comprising at least one cable core comprising an electric conductor, a crosslinked electrically insulating layer, and particles of a zeolite system comprising at least a first zeolite and a second zeolite placed in the cable core. The particles of the first zeolite are able to extract and absorb, very efficiently and irreversibly, the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the insulating material during cable lifespan. The particles of the second zeolite are able to absorb the water molecules that unexpectedly form from the dimerization/oligomerization and decomposition reaction of the crosslinking by-products upon their absorption on the first zeolite, so as to avoid the formation of water-trees in the insulating material.

Abstract: The present invention relates to an energy cable comprising a cable core comprising an electric conductor and a crosslinked electrically insulating layer, wherein the cable core further comprises a microporous material having a bimodal pore volume distribution with a first peak of the distribution having a maximum at a pore diameter value within the range 5.5-6.5 ? and a second peak of the distribution having a maximum at a pore diameter value within the range 7.5-8.5 ?, the maximum values of the first and the second peak corresponding to an incremental pore volume of at least 4×10?3 cm3/g. The present invention also relates to a method for extracting methane crosslinking by-products from a crosslinked electrically insulating layer of an energy cable.

Abstract: An energy cable comprising at least one cable core comprising an electric conductor, a crosslinked electrically insulating system comprising an inner semiconducting layer, an insulating layer and an outer semiconducting layer and zeolite particles placed between the electric conductor and the inner semiconducting layer of the insulating system. The zeolite particles are able to efficiently extract and irreversibly absorb the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the insulating material during cable lifespan. This allows to eliminate the high temperature, long lasting degassing process of the energy cable cores having a crosslinked insulating layer, or at least to reduce temperature and/or duration of the same, so as to increase productivity and reduce manufacturing costs.

Abstract: An energy cable includes, at least one cable core including an electric conductor, a crosslinked electrically insulating layer, and zeolite particles placed in the cable core. The zeolite particles are able to extract and absorb, very efficiently and irreversibly, the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the insulating material during cable lifespan. A method for extracting crosslinking by-products from a cross-linked electrically insulating layer of an energy cable core, which includes manufacturing the energy cable core containing zeolite particles, heating the energy cable core up to a temperature causing migration of the crosslinking by-products from the crosslinked electrically insulating layer; and then placing a metal screen around the energy cable core.

Abstract: An energy cable comprising at least one cable core comprising an electric conductor, a crosslinked electrically insulating system comprising an inner semiconducting layer, an insulating layer and an outer semiconducting layer and zeolite particles placed between the electric conductor and the inner semiconducting layer of the insulating system. The zeolite particles are able to efficiently extract and irreversibly absorb the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the insulating material during cable lifespan. This allows to eliminate the high temperature, long lasting degassing process of the energy cable cores having a crosslinked insulating layer, or at least to reduce temperature and/or duration of the same, so as to increase productivity and reduce manufacturing costs.

Abstract: Submarine flexible pipe includes a metal flexible carcass, an inner polymeric liner arranged in a radially outer position with respect to the metal flexible carcass, a protective polymeric outer sheath and a mechanical armor structure arranged in a radially inner position with respect to the protective polymeric outer sheath, the mechanical armor structure being potentially exposed to water contact. The mechanical armor structure includes a pressure resistant armor and a tensile armor arranged in a radially outer position with respect to the inner polymeric liner. The mechanical armor structure includes a plurality of carbon steel elongated elements, each of the carbon steel elongated elements being coated by an aluminum cladding.

Abstract: A cable includes an indicating element for detecting the infiltration of water into the cable and a method using such indicating element.

Abstract: An electrical power transmission line includes: at least one electrical cable; a raceway made of ferromagnetic material including a base and a cover defining an inner housing space for housing the electrical cable; a wet basic filling material having a pH between 11 and 13 housed in the inner housing space and embedding the at least one electrical cable. In order to achieve corrosion protection of the raceway, the inner surface of the cover is in contact with a basic passivating material having a pH between 11 and 13.

Abstract: An energy cable includes, at least one cable core including an electric conductor, a crosslinked electrically insulating layer, and zeolite particles placed in the cable core. The zeolite particles are able to extract and absorb, very efficiently and irreversibly, the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the insulating material during cable lifespan. A method for extracting crosslinking by-products from a cross-linked electrically insulating layer of an energy cable core, which includes manufacturing the energy cable core containing zeolite particles, heating the energy cable core up to a temperature causing migration of the crosslinking by-products from the crosslinked electrically insulating layer; and then placing a metal screen around the energy cable core.

Abstract: Submarine flexible pipe includes a metal flexible carcass, an inner polymeric liner arranged in a radially outer position with respect to the metal flexible carcass, a protective polymeric outer sheath and a mechanical armor structure arranged in a radially inner position with respect to the protective polymeric outer sheath, the mechanical armor structure being potentially exposed to water contact. The mechanical armor structure includes a pressure resistant armor and a tensile armor arranged in a radially outer position with respect to the inner polymeric liner. The mechanical armor structure includes a plurality of carbon steel elongated elements, each of the carbon steel elongated elements being coated by an aluminum cladding.

Abstract: A cable includes an indicating element for detecting the infiltration of water into the cable and a method using such indicating element.

Abstract: An electrical power transmission line includes: at least one electrical cable; a raceway made of ferromagnetic material including a base and a cover defining an inner housing space for housing the electrical cable; a wet basic filling material having a pH between 11 and 13 housed in the inner housing space and embedding the at least one electrical cable. In order to achieve corrosion protection of the raceway, the inner surface of the cover is in contact with a basic passivating material having a pH between 11 and 13.

Abstract: An underwater optical fiber cable includes two end portions, an extruded metal tube, at least one optical fiber and a polymeric sheath surrounding the extruded metal tube. The at least one optical fiber is housed in loose configuration in the extruded metal tube. The cable includes a controlled cathodic protection system connected to one of the end portions of the underwater cable and includes an anode bed arranged outside the underwater cable and an electric connection connecting the anode bed to the extruded metal tube of the underwater cable at one of the end portions of the underwater cable.

Abstract: An underwater optical fibre cable includes two end portions, an extruded metal tube, at least one optical fibre and a polymeric sheath surrounding the extruded metal tube. The at least one optical fibre is housed in loose configuration in the extruded metal tube. The cable includes a controlled cathodic protection system connected to one of the end portions of the underwater cable and includes an anode bed arranged outside the underwater cable and an electric connection connecting the anode bed to the extruded metal tube of the underwater cable at one of the end portions of the underwater cable.