Abstract: The invention relates to a sealing device with a longitudinal axis for plugging a leak in the wall of a pipe or tank, further comprising a drive means at one end, a plug and a tap. According to the main features, at its other end the device comprises a drilling head suitable for drilling a cylindrical hole in the thickness of the wall at the location of the leak, the plug comprises a thread and a thread runout chamfer on which the thread ends, the end of the thread extending to a clearance groove and a smooth upper chamfer suitable for deforming the thread at the end of internal thread, the hole being intended to be sealed by the plug. The invention also relates to a method for sealing a leak in the wall of a pipe or tank.

Abstract: A device for winding a reinforcing strip onto a repair length on either side of a portion to be repaired of a pipe, including: a carriage bearing a reel holder and a reel, means for rotating the carriage around the pipe and for translating same along the longitudinal axis of the pipe so that the strip is wound around the pipe in the form of a helix, means for reversing the direction of translation movement of the carriage so that, at each change of direction, the carriage moves in a direction opposite to the previous one and a layer of reinforcing strip is wound around the pipe, overlapping the previous layer. The means for translating the carriage include a conveying chain and the reversing means are actuated automatically without the intervention of an operator.

Abstract: A device for winding a reinforcing strip onto a repair length on either side of a portion to be repaired of a pipe, including: a carriage bearing a reel holder and a reel, means for rotating the carriage around the pipe and for translating same along the longitudinal axis of the pipe so that the strip is wound around the pipe in the form of a helix, means for reversing the direction of translation movement of the carriage so that, at each change of direction, the carriage moves in a direction opposite to the previous one and a layer of reinforcing strip is wound around the pipe, overlapping the previous layer. The means for translating the carriage include a conveying chain and the reversing means are actuated automatically without the intervention of an operator.

Abstract: The device for the local repair or strengthening of an elongate body exhibiting a change in its integrity, by winding one or more layers of tape around the elongate body, comprises two half rings, each having two ends configured to come into contact with one another, means for moving the two half rings relative to one another until they surround the elongate body, without touching, and means for translating the two half rings relative to one another along an axis perpendicular to the axis of the elongate body until the ends of the half rings are in contact to form a ring surrounding the elongate body. In the embodiments, the device includes, on at least one of the half rings, at least one centering pin corresponding, in the other half ring, to an opening with a shape complementary to the shape of the centering pin.

Abstract: A reinforcement strip (20) suitable for repairing a fluid transport pipe (10) during which the strip is wound, under traction, around the portion of the pipe where the repair needs to be made at the same time that a crosslinking resin is applied to the strip in such a way as to form a sleeve around the portion to be repaired. The reinforcement strip includes at least one integrated metal wire, the electrical properties of the wire being used for operations including crosslinking the resin, detecting the portion of the pipe that includes the sleeve or detecting repaired portions of the pipe that have increased in diameter due to a thinning of the wall of the pipe.

Abstract: A retaining plate (30) made from a rigid material having tips on each of the two faces of same, the tips of each of the faces of a length of between 1 and 3 mm making an angle in the forward direction with the face of between 30° and 60°. The retaining plate is secured by the tips of one of the faces of same at the final end (28) of a first reinforcing strip (26) already positioned on the degraded portion of a pipe, and secured to the initial end (32) of a second reinforcing strip to be wound following the first reinforcing strip by the tips of the other face, said tips being tilted towards the initial end (32) of the second reinforcing strip.

Abstract: A device (110) and a method for locally repairing or reinforcing an elongate body (100), said device (110) being intended for winding one or a plurality of layers of pre-impregnated polymerizable strip around the elongate body (100), said device (110) comprising: —releasable means (112, 113) of attachment around the elongate body (100), —means for the rotational movement of support structure (125) around the means (112, 113) of attachment, —means for the longitudinal movement of a spool (135) of a pre-impregnated polymerizable strip relative to the support structure (125), said support (125) comprising means for limiting the movement of the spool to a predetermined path, said spool (135) being unwindable when it is subjected to a given tension, —means for bringing the spool (135) into rotational and translational movement around the elongate body (100), causing the pre-impregnated polymerizable strip to be wound around said body.

Abstract: The device for the local repair or strengthening of an elongate body exhibiting a change in its integrity, by winding one or more layers of tape around the elongate body, comprises two half rings, each having two ends configured to come into contact with one another, means for moving the two half rings relative to one another until they surround the elongate body, without touching, and means for translating the two half rings relative to one another along an axis perpendicular to the axis of the elongate body until the ends of the half rings are in contact to form a ring surrounding the elongate body. In the embodiments, the device includes, on at least one of the half rings, at least one centering pin corresponding, in the other half ring, to an opening with a shape complementary to the shape of the centering pin.

Abstract: A reinforcement strip (20) suitable for repairing a fluid transport pipe (10) during which the strip is wound, under traction, around the portion of the pipe where the repair needs to be made at the same time that a crosslinking resin is applied to the strip in such a way as to form a sleeve around the portion to be repaired. The reinforcement strip includes at least one integrated metal wire, the electrical properties of the wire being used for operations including crosslinking the resin, detecting the portion of the pipe that includes the sleeve or detecting repaired portions of the pipe that have increased in diameter due to a thinning of the wall of the pipe.

Abstract: A retaining plate (30) made from a rigid material having tips on each of the two faces of same, the tips of each of the faces of a length of between 1 and 3 mm making an angle in the forward direction with the face of between 30° and 60°. The retaining plate is secured by the tips of one of the faces of same at the final end (28) of a first reinforcing strip (26) already positioned on the degraded portion of a pipe, and secured to the initial end (32) of a second reinforcing strip to be wound following the first reinforcing strip by the tips of the other face, said tips being tilted towards the initial end (32) of the second reinforcing strip.

Abstract: A device (110) and a method for locally repairing or reinforcing an elongate body (100), said device (110) being intended for winding one or a plurality of layers of pre-impregnated polymerizable strip around the elongate body (100), said device (110) comprising:—releasable means (112, 113) of attachment around the elongate body (100),—means for the rotational movement of support structure (125) around the means (112, 113) of attachment,—means for the longitudinal movement of a spool (135) of a pre-impregnated polymerizable strip relative to the support structure (125), said support (125) comprising means for limiting the movement of the spool to a predetermined path, said spool (135) being unwindable when it is subjected to a given tension,—means for bringing the spool (135) into rotational and translational movement around the elongate body (100), causing the pre-impregnated polymerizable strip to be wound around said body.

Abstract: A method of repairing a pipe (11) containing a pressurized fluid and having at least one leak, for instance in a flange (10), including the steps of installing a flexible and sealed casing (12) engaging the pipe on each side of the leak site to enclose the leak, the casing including a valve arranged at the highest point if the fluid is a gas or at the lowest point if it is a liquid; installing a rigid and sealed casing (20) engaging the pipe on either side of the flexible casing and enclosing the casing; and injecting a polymerizable liquid material into the rigid casing, so that the flexible casing is enclosed in a sleeve of polymeric resin after polymerization of the polymerizable material.

Abstract: A sleeve f or repairing a fluid pipe (12), including a rigid or flexible shell (22) which forms a mold that surrounds at least one defective area (10) of the pipe. A liquid-state polymerizable material is injected into the mold, which polymerizes and seals the defective area. The sleeve also includes an insert which is made up of several coils of a filiform element (14), which is wound into a helix around the defective area of the pipe, before the polymerizable material is injected or infused.

Abstract: A method of repairing a pipe (11) containing a pressurized fluid and having at least one leak, for instance in a flange (10), including the steps of installing a flexible and sealed casing (12) engaging the pipe on each side of the leak site to enclose the leak, the casing including a valve arranged at the highest point if the fluid is a gas or at the lowest point if it is a liquid; installing a rigid and sealed casing (20) engaging the pipe on either side of the flexible casing and enclosing the casing; and injecting a polymerizable liquid material into the rigid casing, so that the flexible casing is enclosed in a sleeve of polymeric resin after polymerization of the polymerizable material.