Arrangement for inspection of welded plate sections
First Claim
1. An arrangement for inspecting arcuate plate assemblies of aluminum with a thickness of at least 20 mm, for manufacture of large arcuate objects such as LNG tanks, comprising:
- a fastening jig for holding a plate assembly that is to be inspected at a predetermined inspection position having first and second opposite sides,a weld inspection means comprising, at the first side of the inspection position,a first rail system,a first carriage mounted on the first rail system for movement therealong, anda radiation source for X-ray material inspection carried by the first carriage,and, at the second side of the inspection position,a second rail system,a second carriage mounted on the second rail system for movement therealong, andan imaging means including a video camera for X-ray inspection carried by the second carriage, anda laser measuring device located at a considerable distance from the predetermined inspection position for measuring the arcuate shape of the plate assembly over substantially its entire area.
1 Assignment
0 Petitions
Accused Products
Abstract
An arrangement for inspecting arcuate plate assemblies of aluminum with a thickness of at least 20 mm, intended for the manufacturing of large spherical LNG-tanks or the like includes a fastening jig (3) for plate assemblies (4) to be inspected, and inspection and measuring means allowing, in a single fixation of a plate assembly (4) in the fastening jig (3), inspection of one or several weld joints (5). Measuring of the arcuate shape of a shape of the plate assembly (4), whereby, for the inspection of the weld joint(s) includes at one side of the plate assembly (4), a first carriage (19) movable along a first rail system (9), which carriage (19) is provided with a radiation source (20) for X-ray material inspection and, at the other side of the plate assembly (4) and a second carriage (14) movable along a second rail system (8), which the second carriage (14) is provided with a picture amplifier (16) and a video camera (17) for X-ray inspection. For shape inspection of the plate assembly (4), a laser measuring device (11) is located at a considerable distance from the plate assembly (4).
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Citations
18 Claims
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1. An arrangement for inspecting arcuate plate assemblies of aluminum with a thickness of at least 20 mm, for manufacture of large arcuate objects such as LNG tanks, comprising:
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a fastening jig for holding a plate assembly that is to be inspected at a predetermined inspection position having first and second opposite sides, a weld inspection means comprising, at the first side of the inspection position, a first rail system, a first carriage mounted on the first rail system for movement therealong, and a radiation source for X-ray material inspection carried by the first carriage, and, at the second side of the inspection position, a second rail system, a second carriage mounted on the second rail system for movement therealong, and an imaging means including a video camera for X-ray inspection carried by the second carriage, and a laser measuring device located at a considerable distance from the predetermined inspection position for measuring the arcuate shape of the plate assembly over substantially its entire area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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13. A method for inspecting an arcuate plate assembly of aluminum with a thickness of at least 20 mm, for manufacture of a large spherical tank, comprising:
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securing the arcuate plate assembly in a predetermined inspection position such that there is, at a first side of the plate assembly, a weld inspection means comprising a first rail system, a first carriage mounted on the first rail system for movement therealong, and a radiation source for X-ray material inspection carried by the first carriage, and, at a second side of the plate assembly, a second rail system, a second carriage mounted on the second rail system for movement therealong, and an imaging means including a video camera for X-ray inspection carried by the second carriage, and a laser measuring device is located at a considerable distance from the plate assembly, employing the weld inspection means to inspect a weld in the plate assembly, and, while keeping the plate assembly in its inspection position, employing the laser measuring device for measuring the arcuate shape of the plate assembly over substantially its entire area. - View Dependent Claims (11, 14, 15, 16, 17, 18)
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Specification