A caliper pig for detecting geometrical deformation of a pipeline is disclosed. The caliper pig includes a body and a first sensor arm assembly. The first sensor arm assembly includes a primary caliper sensor ring adapted to be mounted on the body. Further, the first sensor arm assembly includes a plurality of sensor arms adapted circumferentially distributed on the primary caliper sensor ring. Each of the plurality of sensor arms includes a sensing arm adapted to be in contact with an internal surface of the pipeline and a pair of magnets adapted to rotate along the sensing arm. Each of the plurality of sensor arms includes a sensing unit configured to detect a change in magnetic field based on the movement of the sensing arm. The sensing unit is configured to generate an output indicative of an angle of deflection of the sensing arm while traversing on the internal surface of the pipeline.

A system for the detection of a rate of flow or a level of a fluid or the presence of an object, such as a PIG, in pipelines, comprising at least one detection device that includes: a sensor assembly arranged to detect the rate of flow or level of a fluid withing a section of a pipeline or the presence of a pig located along the section of pipeline where the device is located, a power store, a position determining module, a radio frequency receiver, and a radio frequency transmitter, in which the detection device has a sleep mode in which the sensor assembly is inactive and has a first power consumption and an active mode in which the sensor assembly is active and the detection device has a second, higher, power consumption when the sensor assembly of the device is actively detecting, the device in the active mode also being arranged to transmit signals from the transmitter that are indicative of the detected property of the fluid or presence of an apparatus along the section of the pipeline; and in which the device is configured to switch between the sleep mode and the active mode in response to radio frequency signals received by the receiver.

A system for the detection of a rate of flow or a level of a fluid or the presence of an object, such as a PIG, in pipelines, comprising at least one detection device that includes: a sensor assembly arranged to detect the rate of flow or level of a fluid withing a section of a pipeline or the presence of a pig located along the section of pipeline where the device is located, a power store, a position determining module, a radio frequency receiver, and a radio frequency transmitter, in which the detection device has a sleep mode in which the sensor assembly is inactive and has a first power consumption and an active mode in which the sensor assembly is active and the detection device has a second, higher, power consumption when the sensor assembly of the device is actively detecting, the device in the active mode also being arranged to transmit signals from the transmitter that are indicative of the detected property of the fluid or presence of an apparatus along the section of the pipeline; and in which the device is configured to switch between the sleep mode and the active mode in response to radio frequency signals received by the receiver.

An electronic computing system preserves a pre-error state of a processing unit by receiving a first stream of inputs; buffering the first stream of inputs to generate a buffered stream of inputs identical to the first stream of inputs; conveying the first stream to a primary instance of a first program; conveying the buffered stream to a secondary instance of the first program; executing the primary instance on the first stream in real time; executing the secondary instance on the buffered stream with a predefined time delay with respect to execution of the primary instance on the first stream; detecting an error state resulting from execution of the primary instance; and in response to detecting the error state, pausing the secondary instance and preserving a current state of the secondary instance, wherein the current state of the secondary instance corresponds to a pre-error state of the primary instance.

An electronic computing system preserves a pre-error state of a processing unit by receiving a first stream of inputs; buffering the first stream of inputs to generate a buffered stream of inputs identical to the first stream of inputs; conveying the first stream to a primary instance of a first program; conveying the buffered stream to a secondary instance of the first program; executing the primary instance on the first stream in real time; executing the secondary instance on the buffered stream with a predefined time delay with respect to execution of the primary instance on the first stream; detecting an error state resulting from execution of the primary instance; and in response to detecting the error state, pausing the secondary instance and preserving a current state of the secondary instance, wherein the current state of the secondary instance corresponds to a pre-error state of the primary instance.

A system and method for inspecting offshore and onshore tubular or piping assets is described. The system and method utilizes an inspection tool comprising a communication system, a sensor, a long distance travel system, and a localized travel system, allowing fast long distance travel until the inspection tool approximates an area of interest, followed by actuating the localized travel system to accurately inspect the area of interest.

A system and method for inspecting offshore and onshore tubular or piping assets is described. The system and method utilizes an inspection tool comprising a communication system, a sensor, a long distance travel system, and a localized travel system, allowing fast long distance travel until the inspection tool approximates an area of interest, followed by actuating the localized travel system to accurately inspect the area of interest.

An aquatic in-pipe inspection robot is provided and comprises: means for determining the position of the robot within a pipe and means for adjusting the position of the robot within the pipe, whereby contact with the pipe wall can be avoided; and sensor means for inspecting a pipe.

An aquatic in-pipe inspection robot is provided and comprises: means for determining the position of the robot within a pipe and means for adjusting the position of the robot within the pipe, whereby contact with the pipe wall can be avoided; and sensor means for inspecting a pipe.

A pig for use in a pipeline is provided for determining the material of the pipeline in the context of an inline inspection. The pig includes a position determination unit and at least one braking arrangement for immobilizing the pig at a certain position in the pipeline. The pig also includes an X-ray fluorescence sensor.