Patent ID: 8002501

Claim:
An outer device for universal inspection of risers in free catenary, said outer device comprising: two ring-shaped underframes, namely an upper ring-shaped underframe and a lower ring-shaped underframe, each of said ring-shaped underframes having a rectangular, parallel-shaped profile, two semicircular sections connected by hinges and a means for closing, said two ring-shaped underframes being positioned spacedly apart from and parallel to one another, said upper ring-shaped underframe being fitted on an innerside thereof with a track having a “T”-shaped profile, said track being fitted with a motor-driven trestle adapted to receive and retain a plurality of non-destructive testing sensors, said lower ring-shaped underframe being fitted with two interlocks, having a semicircular shape, which constitute a speed-control device; at least three beams, positioned equal distance apart from one another, said beams being positioned parallel to an axis of a production collection line, said at least three beams being secured to said two ring-shaped underframes to interconnect the upper and lower ring-shaped underframes and retain said underframes parallel to one another to create resistance to a main body of the outer device for universal inspection of risers, and said at least three beams being fitted with arms positioned in an orthogonal relationship to a main axis of the device, said arms being disposed in an upward orientation, such that a free end of each said arm is remotely disposed from an outer surface of the production collection line, and positioned over the upper ring-shaped underframe; the free ends of said arms being fitted with cameras having foci directed to the outer surface of the production collection line, at least three hermetic receptacles secured to said ring-shaped underframes by first supports, said hermetic receptacles being positioned spacedly equal distance apart from another, each of said hermetic receptacles having a substantially cylindrical shape and being oriented parallel to the main axis of the device said receptacles being adapted to retain a communications system, an inspection system and a movement and power system; and at least four sets of equidistantly positioned second supports, fitted with rollers, disposed on an innerside portion of the outer device.