초록 ▼

A jacket for reinforcement of piping, and especially petroleum piping, including a jacket, joint elements between the jacket and the conducting piping, resin disposed in the space between the piping and the jacket, injection fittings or couplings for injection of the resin, and welds connecting the

A jacket for reinforcement of piping, and especially petroleum piping, including a jacket, joint elements between the jacket and the conducting piping, resin disposed in the space between the piping and the jacket, injection fittings or couplings for injection of the resin, and welds connecting the main body of the jacket and the joint elements.

대표청구항 ▼

An improved method for the installation of a jacket assembly to reinforce a first portion of piping located substantially at the surface of a body of water and ascending vertically from submerged piping to a second portion of piping exposed to the atmosphere above the surface of the water and adjace

An improved method for the installation of a jacket assembly to reinforce a first portion of piping located substantially at the surface of a body of water and ascending vertically from submerged piping to a second portion of piping exposed to the atmosphere above the surface of the water and adjacent a work platform, said method comprising the steps of: (1) calibrating the first portion of piping in axially spaced bands around an outside wall of the piping in areas which will receive circumferential welds to fasten the jacket assembly to the piping; (2) positioning a set of ½pipes, which are to form a first jacket section, around the second portion of the piping exposed to the atmosphere and adjacent the work platform with the ½pipes abutting at longitudinal edges, the set of ½pipes when so abutting having an inside diameter greater than an outside diameter of the piping which will provide an annular space between the piping and the jacket assembly and welding the set of ½pipes together at the longitudinal edges; (3) lowering the first jacket section by gravity vertically along the second portion of the piping toward the first portion of the piping; (4) where the jacket assembly includes additional jacket sections, positioning the first jacket section thereby providing space for an added jacket section in the second portion of the piping exposed to the atmosphere with an end of the first jacket section abutting an end of the added jacket section, repeating steps 2 and 3 for each added jacket section and circumferentially welding the abutting ends of each jacket section to the added jacket section before lowering the welded jacket sections which form a welded jacket assembly downward to the first portion of the piping; (5) welding end joint elements at each extremity of the welded jacket assembly; (6) lowering the jacket assembly including the end joint elements by gravity thereby locating the jacket assembly at the first portion of the piping with each extremity thereof at one of the calibrated bands; (7) circumferentially welding each extremity of the end joint elements of the jacket assembly to the outside wall of the piping thereby forming an enclosed space; and (8) injecting resin into the enclosed space between the jacket assembly and the piping thereby forming an integrated reinforced structure.