An assembly to plug a leak in a flowline includes a plug configured to plug the leak in the flowline, which includes a circumferential surface and a longitudinal axis. A plug insertion subassembly supports the plug. The plug insertion subassembly can move the plug between the circumferential surface and the longitudinal axis of the flowline. An axial positioning subassembly supports the plug insertion subassembly. The axial positioning subassembly can move the plug insertion subassembly along the longitudinal axis of the flowline. A chain-operated rotational positioning subassembly supports the axial positioning subassembly. The rotational positioning subassembly can be attached to the flowline with the leak. The rotational positioning subassembly is movable and can move the axial positioning subassembly on the circumferential surface of the flowline.

An assembly to plug a leak in a flowline includes a plug configured to plug the leak in the flowline, which includes a circumferential surface and a longitudinal axis. A plug insertion subassembly supports the plug. The plug insertion subassembly can move the plug between the circumferential surface and the longitudinal axis of the flowline. An axial positioning subassembly supports the plug insertion subassembly. The axial positioning subassembly can move the plug insertion subassembly along the longitudinal axis of the flowline. A chain-operated rotational positioning subassembly supports the axial positioning subassembly. The rotational positioning subassembly can be attached to the flowline with the leak. The rotational positioning subassembly is movable and can move the axial positioning subassembly on the circumferential surface of the flowline.

A repair system for repairing a polyolefin pipe containing a transitional film applied over and bonded to the pipe and a reinforcement system, applied over the transitional film. The transitional film has a first side adapted to bond to polyolefins and the reinforcement system contains a fiber-reinforced polyurethane system bonded to the second side of the transitional film. A system two polyolefin tubular members joined end-to-end containing two tubular members arranged such that their respective ends are adjacent, thereby defining a circumferential joint, a transitional film applied and bonded to the circumferential joint and at least a portion of the two tubular members, and a reinforcement system applied over the transitional film. The transitional film has a first side adapted to bond to polyolefins and the reinforcement system contains a fiber-reinforced polyurethane or a fiber-reinforced epoxy system bonded to the second side of the transitional film.

A repair system for repairing a polyolefin pipe containing a transitional film applied over and bonded to the pipe and a reinforcement system, applied over the transitional film. The transitional film has a first side adapted to bond to polyolefins and the reinforcement system contains a fiber-reinforced polyurethane system bonded to the second side of the transitional film. A system two polyolefin tubular members joined end-to-end containing two tubular members arranged such that their respective ends are adjacent, thereby defining a circumferential joint, a transitional film applied and bonded to the circumferential joint and at least a portion of the two tubular members, and a reinforcement system applied over the transitional film. The transitional film has a first side adapted to bond to polyolefins and the reinforcement system contains a fiber-reinforced polyurethane or a fiber-reinforced epoxy system bonded to the second side of the transitional film.

A manifold structure for a fluid reclamation apparatus incorporated into a hydraulic system having inner and outer fluid lines and with annular containment space between the inner and outer fluid lines for capturing fluid leaking from the inner fluid line, the manifold structure being connected to least one end the inner and outer fluid lines and contains a chamber for receiving leaked fluid from the annular space and including a manifold inner sleeve to which the inner fluid line is coupled, the inner sleeve being retained within a manifold outer sleeve to which the outer fluid line is coupled and having a lateral bore extending from the chamber and through the outer sleeve for delivering leaked fluid into a reclamation line and back into the hydraulic system, the inner sleeve being rotatably mounted within the outer sleeve by at least one O-ring seated in a groove around the inner sleeve and sealingly abutting the inner surface of the outer sleeve.

A manifold structure for a fluid reclamation apparatus incorporated into a hydraulic system having inner and outer fluid lines and with annular containment space between the inner and outer fluid lines for capturing fluid leaking from the inner fluid line, the manifold structure being connected to least one end the inner and outer fluid lines and contains a chamber for receiving leaked fluid from the annular space and including a manifold inner sleeve to which the inner fluid line is coupled, the inner sleeve being retained within a manifold outer sleeve to which the outer fluid line is coupled and having a lateral bore extending from the chamber and through the outer sleeve for delivering leaked fluid into a reclamation line and back into the hydraulic system, the inner sleeve being rotatably mounted within the outer sleeve by at least one O-ring seated in a groove around the inner sleeve and sealingly abutting the inner surface of the outer sleeve.

A tool for sealing at least one opening of a fluid circuit element, the tool including a support, at least one sealing device for an opening connected to the support and positioning structure for positioning and immobilizing the support with respect to the fluid circuit element, the frame comprising a U-shaped stirrup with a base and two arms, a rod and two connections connecting the rod to each arm, each arm including a centering wedge attached to the internal face of the arm which presents a bearing surface, the bearing surfaces being spaced apart by a distance making it possible to immobilize the fluid circuit element in a first direction in a transverse plane.

A tool for sealing at least one opening of a fluid circuit element, the tool including a support, at least one sealing device for an opening connected to the support and positioning structure for positioning and immobilizing the support with respect to the fluid circuit element, the frame comprising a U-shaped stirrup with a base and two arms, a rod and two connections connecting the rod to each arm, each arm including a centering wedge attached to the internal face of the arm which presents a bearing surface, the bearing surfaces being spaced apart by a distance making it possible to immobilize the fluid circuit element in a first direction in a transverse plane.

The present invention relates to the repair of pipes, comprising a two-part ring fixed initially by a compression unit which allows the execution of longitudinal welding in order definitively to fix the two-part ring, via apertures, before the compression unit is removed. The two-part ring will be completely welded to the pipe, especially in regions close to connections, but it is necessary for the two-part ring to be fixed initially by the compression unit for the purpose of shaping and definitive geometry of the ring relative to the pipe, normalization of fluid conveyance and in order that it is possible for welding to be planned for the opportune moment.

Disclosed are a pre-tightening force repairing method, a repairing method involving a combination of a pre-tightening force and a clamp, and a repaired pipeline. The repairing method includes: (a) fixing part of a fiber material to a pipeline; (b) applying a pre-tightening force to the fiber material, winding multiple layers of the fiber material around the pipeline under the pre-tightening force; (c) in the state of applying the pre-tightening force, completing the curing of the multi-layer fiber composite material; and (d) mounting a clamp outside a repairing part of the fiber composite material. The magnitude of the pre-tightening force is designed to overcome the situation whereby a fiber composite material layer comes unstuck from the pipeline due to the radial shrinkage of the pipeline caused by a decrease in internal pressure and/or the axial stretching of the pipeline after the pipeline, which is under pressure, is repaired.