A method of lining a branch area in a pipeline using an inflatable bladder. The method includes steps of preparing a branch liner with resin and positioning the branch liner in a pipeline, inflating the bladder and running a flow of air and steam through the bladder while monitoring its temperature. After curing of the resin, temperature of the liner is monitored and the bladder is removed only after proper cooling of the liner.

On example provides a containment sleeve for a pressurized piping system including a main body comprising a pliable fabric extending in longitudinal and transverse directions. The main body includes an exterior major surface and an opposing interior major surface, first and second opposed transverse edges, first and second opposed longitudinal edges, and a number of pleats extending from the interior major surface, each pleat having opposing sides of the longitudinal pleat being sewn together with breakaway stitching at a base of the pleat at the interior major surface. A number of transversely extending straps disposed on the exterior major surface between the first and second longitudinal edges, the straps to secure the main body about a portion of the piping system with the interior major surface facing the piping system.

The methods and devices described herein are for repairing a break in a pipe and also provide means for adding additional pipes to an existing pipe. According to a first embodiment, a pair of end connectors are installed on the broken ends of a pipe and then a sleeve is slid over the gap between the two broken ends. According to a second embodiment, two half cylinder connector pieces are placed around a broken pipe and then a cylindrical sleeve is placed over the top. According to a third embodiment, two half cylinder connector pieces are glued to each other and the broken pipe, one of the half cylinders having a branch for installing an additional pipe to the pipe system.

The present invention relates to a method and apparatus for repairing a leak in a pressurized pipe, and more particularly to a vent box for use in repairing a leak in a pipe carrying pressurized steam. The sealant is applied to the leak, the vent box is in place over the leak, and the vent is opened during the curing process.

The present invention relates to a method and apparatus for repairing a leak in a pressurized pipe, and more particularly to a vent box for use in repairing a leak in a pipe carrying pressurized steam. The sealant is applied to the leak, the vent box is in place over the leak, and the vent is opened during the curing process.

A feedwater sparger repair assembly includes a cover plate having a partial cylindrical shape and having a nozzle opening and a pair of bolt openings extending through the cover plate. A nozzle is attached to the cover plate and surrounds the nozzle opening. A pair of T-bolts extend through a respective one of the pair of bolt openings and each include a shank having a threaded portion extending from an exterior side of the cover plate and a partial cylindrical head portion disposed at an end of the shank on an interior side of the cover plate. A pair of nuts are engaged with the threaded portion of the pair of T-bolts. The feedwater sparger repair assembly is adapted to be mounted to an opening that is cut into a core spray pipe in order to repair/replace a sparger that becomes cracked.

The present invention relates to a method for renovating damaged pipe walls in the region of the connection of a secondary pipe to a main pipe, comprising the following steps, in particular in this sequence: a) providing an apparatus comprising a mobile carrier element, wherein a covering element which is variable in terms of outer diameter and an expandable expansion body are arranged on the carrier element; b) moving the carrier element to the region to be renovated, which comprises the main pipe and the secondary pipe; c) expanding the covering element until it lies against the inner wall of the main pipe, wherein the expansion body, before and/or at least intermittently during the expansion thereof, is arranged in a first recess of the covering element; d) expanding the expansion body, such that the expansion body, when expanded, lies against the wall of the secondary pipe such that the covering element and the expansion body together form a shuttering; e) positioning a transport means for a renovation compound on the second recess of the covering element; and f) introducing the curable, viscous renovation compound into the space between the shuttering and the walls of the main and secondary pipes adjacent to the shuttering by means of the transport means from a storage device.

The present invention relates to a method for renovating damaged pipe walls in the region of the connection of a secondary pipe to a main pipe, comprising the following steps, in particular in this sequence: a) providing an apparatus comprising a mobile carrier element, wherein a covering element which is variable in terms of outer diameter and an expandable expansion body are arranged on the carrier element; b) moving the carrier element to the region to be renovated, which comprises the main pipe and the secondary pipe; c) expanding the covering element until it lies against the inner wall of the main pipe, wherein the expansion body, before and/or at least intermittently during the expansion thereof, is arranged in a first recess of the covering element; d) expanding the expansion body, such that the expansion body, when expanded, lies against the wall of the secondary pipe such that the covering element and the expansion body together form a shuttering; e) positioning a transport means for a renovation compound on the second recess of the covering element; and f) introducing the curable, viscous renovation compound into the space between the shuttering and the walls of the main and secondary pipes adjacent to the shuttering by means of the transport means from a storage device.

An assembly for relining a junction between a branch pipeline and a main pipeline comprises a seal installation device capable of moving within the main pipeline to the junction. The seal installation device includes a curable seal for being placed and pressed onto the junction and optionally for extending into the branch pipeline. The assembly further comprises a light curing device for being introduced into the seal installation device within the main pipeline and the branch pipeline for curing the seal.

An assembly for relining a junction between a branch pipeline and a main pipeline comprises a seal installation device capable of moving within the main pipeline to the junction. The seal installation device includes a curable seal for being placed and pressed onto the junction and optionally for extending into the branch pipeline. The assembly further comprises a light curing device for being introduced into the seal installation device within the main pipeline and the branch pipeline for curing the seal.