Abstract: A protective sleeve is applied as a permanent outer cladding shield over a joint infill at the welded end closure portions of adjacent coated sections of pipe for a pipeline in or beneath a body of water. The sleeve once installed forms a seal against entry of water to protect the pipe from corrosion. The sleeve takes the form of a sheet of synthetic resin mounted to form a cylinder about the area to receive the joint infill. A flap is provided on a longitudinal edge of the sheet to prevent leakage and hold the cylindrical shape of the infill when to be applied. Electrically conductive mesh or wire element bands are mounted with an inner side of the sheet to circumferentially engage the coated sections of the pipe on either side of the infill. The sheet and conductive bands are held in place to be applied by an applicator clamp. Electrical current is applied to the mesh bands to fuse the sleeve circumferentially to the coated cover sections of the pipe. The infill is applied in the interior of the sleeve.

Abstract: A protective sleeve is applied as a permanent outer cladding shield over a joint infill at the welded end portions of adjacent coated sections of pipe for a pipeline in or beneath a body of water. The sleeve once installed forms a seal against entry of water to protect the pipe from corrosion. The sleeve takes the form of a sheet of synthetic resin mounted to form a cylinder about the area to receive the joint infill. An electrically conductive mesh or wire element mounted with the sheet is provided with electrical current to fuse circumferential portions of the sleeve to the weight-coated cover sections of the pipe and to fuse longitudinal portions of the sleeve together. A seal against entry of water is formed between the sleeve and the pipe covering. A port formed in the sleeve allows introduction of the joint infill. A closure is later hermetically sealed to the sleeve over the injection port by electrical heating of conductive elements mounted on a surface of the closure.

Abstract: A protective sleeve is applied as a permanent outer cladding shield over a joint infill at the welded end closure portions of adjacent coated sections of pipe for a pipeline in or beneath a body of water. The sleeve once installed forms a seal against entry of water to protect the pipe from corrosion. The sleeve takes the form of a sheet of synthetic resin mounted to form a cylinder about the area to receive the joint infill. A flap is provided on a longitudinal edge of the sheet to prevent leakage and hold the cylindrical shape of the infill when to be applied. Electrically conductive mesh or wire element bands are mounted with an inner side of the sheet to circumferentially engage the coated sections of the pipe on either side of the infill. The sheet and conductive bands are held in place to be applied by an applicator clamp. Electrical current is applied to the mesh bands to fuse the sleeve circumferentially to the coated cover sections of the pipe. The infill is applied in the interior of the sleeve.

Abstract: A protective sleeve is applied as a permanent outer cladding shield over a joint infill at the welded end portions of adjacent coated sections of pipe for a pipeline in or beneath a body of water. The sleeve once installed forms a seal against entry of water to protect the pipe from corrosion. The sleeve takes the form of a sheet of synthetic resin mounted to form a cylinder about the area to receive the joint infill. An electrically conductive mesh or wire element mounted with the sheet is provided with electrical current to fuse circumferential portions of the sleeve to the weight-coated cover sections of the pipe and to fuse longitudinal portions of the sleeve together. A coating of synthetic resin is applied onto bonded adjacent portions of the cylindrical sleeve and overlapping end portions of the sleeve and the portions of the coated pipe sections to further seal the sleeve over the pipe joint.

Abstract: An apparatus and method for protecting exposed pipeline joints on weight coated pipelines used in offshore applications. A pliable cover sleeve overlaps a pair of weight coat sections that surround the pipeline on each side of the pipe joint. The cover sleeve circumferentially envelops the pipe joint, forming an annular space enclosed between the pipe and the cover sleeve and bordered by the pair of weight coat sections. The cover sleeve includes a number of protruding ridges forming a number of chambers between the ridges in flow communication with the annular space. A joint-filling material of polyurethane foam formed by polyurethane chemicals fills the annular space and the chambers between the ridges of the cover sleeve. As the joint filling material hardens it interlocks with the ridges of the cover sleeve, securing the joint filling material between the cover sleeve and the pipe joint.