A cured in place pipe system having a sensor has a cured in place pipe having a seam, a sensor incorporated into the seam, the sensor for transmitting a signal indicative of a condition within the cured in place pipe, and a communications device positioned remote from the sensor and capable of receiving the signal from the sensor.

Systems and methods for reinforcement of tubular structures via composite internal dowels are provided herein. The hardening of a curable fill inside a flexible sleeve provides conformal contact between the resulting dowel and the surrounding tubular structure. Permeation of the fill through the sleeve may improve the bond. Attachment of the sleeve to a narrower tube may allow for precise positioning of the sleeve as well as a reduction in the amount of fill required. Ultimately, the internal dowels may extend past a degraded section of the tubular structure from a selected lower limit below the degraded section to a selected upper limit above the degraded section.

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below:

CF.sub.2CFOR.sub.f(I)

wherein R.sub.f is a linear or branched C.sub.3-C.sub.5 perfluorinated alkyl group or a linear or branched C.sub.3-C.sub.12 perfluorinated oxyalkyl group comprising one or more ether oxygen atoms,
said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372 C. under a load of 5 Kg [polymer (F)].

The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations.

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below:

CF.sub.2CFOR.sub.f (I)

wherein R.sub.f is a linear or branched C.sub.3-C.sub.5 perfluorinated alkyl group or a linear or branched C.sub.3-C.sub.12 perfluorinated oxyalkyl group comprising one or more ether oxygen atoms,
said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372 C. under a load of 5 Kg [polymer (F)].

The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations.

A method lays lined pipeline which actively and successfully removes air pockets which might be trapped in the annulus between the liner and the host pipe by progressively flooding the lined pipeline. Further, the liner is brought into closer contact and engagement with the host pipe. The removal of air in the annulus enables the pipeline test pressure to stabilize more quickly and avoids the risk of potential collapse during operational service life in the event the pipeline pressures fluctuate or a vacuum is created during an emergency shutdown.

The present invention relates to a lining tube for renovating fluid-conducting pipe systems, wherein the lining tube comprises at least one thermally and/or radiation curable layer and at least one machine-readable data tag, wherein the at least one data tag comprises at least one individual technical specification for the lining tube, which can be processed by a data processing device in order to provide parameters for a curing apparatus, in particular for controlling or regulating a curing process of the lining tube and/or a pulling device, in particular for controlling or regulating pulling in the lining tube.

A method and apparatus for inserting a tubular liner impregnated with a hardening resin into the conduits or pipes to be rehabilitated is disclosed. The apparatus is a tool comprising a cylindrical segment and a conical segment, the cylindrical segment and the conical segment connected together to form a passageway adapted to guide a tubular liner inside a host pipe.

Segments are linked in the circumferential direction and in the pipe-length direction to assemble a rehabilitation pipe inside an existing pipe in order to rehabilitate the existing pipe. A stackable spacer that is held by a spacer holder is inserted between the existing pipe and the rehabilitation pipe to adjust the position of the rehabilitation pipe relative to the existing pipe. The spacer holder is provided with a movable member that is movable in the circumferential and vertical directions between the inner wall surfaces thereof. The movable member is positioned in the circumferential and vertical directions depending upon the circumferential width of the spacer and the number of spacers stacked. The spacer is held between the positioned movable member and the inner wall surface of the spacer holder.

A pipe liner for lining a fluid-carrying pipe, the pipe liner comprising an elongated flexible conduit and a flexible flange. The flexible conduit includes an outer wall forming an open-ended central channel for allowing fluids to be pumped therethrough. The flexible flange extends radially from one end of the elongated conduit and includes a number of fastener holes. The flexible conduit and the flexible flange are configured to be collapsed and pulled through the pipe such that the flexible flange can be connected to a rigid flange of the pipe via the fastener holes. The pipe liner is less prone to leak and is easier to transport and install.

A process for rehabilitating hydrogen lines or converting a line to the transport of hydrogen and a use of a liner for rehabilitating hydrogen lines or for converting a line to the transport of hydrogen. The liner includes at least one fibrous layer impregnated with a resin system. The liner includes a hydrogen barrier layer including at least one material selected from the group consisting of a polymer, metal, oxide, nitride, carbide, graphene, and a mixture thereof.