The method of inspecting a degraded area of a metal structure covered by a composite repair generally comprises operating a Compton scattering inspection device onto the degraded area, including emitting a beam of radiation particles directed towards and across the composite repair, detecting at least some backscattered photons scattered back from the metal structure, and acquiring Compton scattering data from the detected backscattered photons, the Compton scattering data being indicative of remaining wall thickness of the degraded area.

Provided is an inspection robot that is self-propelled on piping, measures moisture contained in a lagging material using a mounted inspection device, for example, a neutron moisture meter, and detects risk of corrosion. The inspection robot includes a main frame 1 including a recessed part 17 fit onto an outer circumferential surface of piping P, a main frame drive mechanism (first drive mechanism) D1 that causes the main frame to advance/retract in an axis direction of the piping, a revolving member 32 supported in an advanceable/retractable manner along an arc-shaped locus in the recessed part of the main frame, a revolving member drive mechanism (second drive mechanism) D2 that moves the revolving member, and an inspection device mounted on the revolving member.

The subject technology relates to a process by which data from two downhole loggers (e.g., acoustic transducers), one at each end of a pipeline, can be used to improve the resolution of a pressure pulse system, even for slow valve operating times. For example, the process of the subject technology uses data from two transducers (e.g., acoustic transducers), instead of one transducer typically employed in traditional approaches, thereby leading to increased resolution of the deposit location and thickness. By improving the deposition estimation resolution, locating smaller deposits in a pipeline more accurately can be realized. The improved resolution in deposition estimation computations supports better decision making by providing more detailed measurement and quantification data for use in resolution of deposition buildup.

Provided are an image processing apparatus, a radiography system, an image processing method, and an image processing program by which a radiographic image can be accurately corrected. An image processing apparatus includes an image acquisition unit that acquires, from a radiation detector in which a plurality of pixels each of which outputs an electrical signal according to a dose of radiation R emitted from a radiation source are arranged, a radiographic image captured in a state in which end parts of the radiation detector overlap with each other; and a correction unit that corrects an influence of the end portion on a far side from the radiation source, which is included in the radiographic image.

A multi-scale inspection and intelligent diagnosis system and method for tunnel structural defects includes: a traveling section; a supporting section, disposed on the traveling section, and including a rotatable telescopic platform, where two mechanical arms working in parallel are disposed on the rotatable telescopic platform; an inspection section, mounted on the supporting section, and configured to perform multi-scale inspection on surface defects and internal defects in different depth ranges of a same position of a tunnel structure, and transmit inspected defect information to a control section; and the control section, configured to: construct a deep neural network-based defect diagnosis model; construct a data set by using historical surface defect and internal defect information, and train the deep neural network-based defect diagnosis model; and receive multi-scale inspection information in real time, and automatically recognize types, positions, contours, and dielectric attributes of the internal and surface defects.

Some embodiments include a radiographic inspection system, comprising: a detector; a support configured to attach the detector to a structure such that the detector is movable around the structure; a radioisotope collimator; and a collimator support arm coupling the detector to the radioisotope collimator such that the radioisotope collimator moves with the detector.

The present disclosure provides systems, apparatuses, and methods for measuring submerged surfaces. Embodiments include a measurement apparatus including a main frame, a source positioned outside a pipe and connected to the main frame, and a detector positioned outside the pipe at a location diametrically opposite the source and connected to the main frame. The source may transmit a first amount of radiation. The detector may receive a second amount of radiation, determine a composition of the pipe based on the first and second amounts of radiation, and send at least one measurement signal. A control canister positioned on the main frame or on a remotely operated vehicle (ROV) attached to the apparatus may receive the at least one measurement signal from the detector and convey the at least one measurement signal to software located topside.

Systems and methods for robotic inspection of above-ground pipelines are disclosed. Embodiments may include a robotic crawler having a plurality of motors that are individually controllable for improved positioning on the pipeline to facilitate image acquisition. Embodiments may also include mounting systems to house and carry imaging equipment configured to capture image data simultaneously from a plurality of angles. Such mounting systems may be adjustable to account for different sizes of pipes (e.g., 2-40+ inches), and may be configured to account for traversing various pipe support structures. Still further, mounting systems may include quick-release members to allow for removal and re-mounting of imaging equipment when traversing support structures. In other aspects, embodiments may be directed toward control systems for the robotic crawler which assist in the navigation and image capture capabilities of the crawler.

The present disclosure provides systems, apparatuses, and methods for measuring submerged surfaces. Embodiments include a measurement apparatus including a main frame, a source positioned outside a pipe and connected to the main frame, and a detector positioned outside the pipe at a location diametrically opposite the source and connected to the main frame. The source may transmit a first amount of radiation. The detector may receive a second amount of radiation, determine a composition of the pipe based on the first and second amounts of radiation, and send at least one measurement signal. A control canister positioned on the main frame or on a remotely operated vehicle (ROV) attached to the apparatus may receive the at least one measurement signal from the detector and convey the at least one measurement signal to software located topside.

An x-ray imaging system comprises an x-ray emitter for emitting a beam of x-ray photons in a projection pattern, a first photon detector, a second photon detector, and an orbital travel assembly. The first photon detector and second photon detector are configured for sensing a first detection pattern of photons and a second detection pattern of photons, respectively, emitted from the x-ray emitter and passing through a portion of the weld. The orbital travel assembly is configured for supporting the x-ray emitter and the first and second photon detectors The second photon detector is positioned behind the first photon detector in a direction of travel along an orbital weld path, such that the second photon detector is configured to sense the second detection pattern after the first photon sensor detects the first detection pattern, in use.