Abstract:
An apparatus (100) for determining the conditions of a pipeline (201) and for the analysis of the fluid contained therein comprising: a central body (101) having a substantially cylindrical form perforated for the whole length and comprising at least a salinity sensor and at least a pH measurement sensor; a first crown of petals (102) connected to the central body, wherein each petal extends from the central body (101) until it touches the internal wall of the pipeline (201) and wherein each petal comprises at least one deformation sensor and at least one roughness sensor; a sliding device integrally connected to the central body (101) in a more advanced position with respect to the first crown of petals (102), wherein said sliding device can be a second crown of petals (103) identical to the first crown of petals or a foam pig (104) suitably perforated. A further object of the invention relates to a method for determining the conditions of a pipeline and for the analysis of the fluid contained therein, which uses an apparatus according to the present invention.
Abstract:
Method for testing and/or for pressure testing the tightness of the joints of the transfer piping of a pneumatic pipe transport system for waste, in which method the pipe section to be tested is separated inside the pipe from the other piping and pressure medium is conducted into the section, and leaks and/or the pressure of the pressure medium are monitored on the section of pipe to be tested. In the method a device is taken inside the piping, which device comprises a first wall part (21), which comprises first sealing means (31), and a second wall part (22), which comprises second sealing means (33), in which case the pipe section to be tested, more particularly the point of connection, remains between the first wall part (21) and the second wall part (22), in which case the sealing means (31) of the first wall part are brought to be tighter to the inside surface (14) of the pipe and the sealing means (33) of the second wall part (22) are brought to be tighter to the inside surface (15) of the pipe, and pressure medium is brought into the chamber space (23) bounded by the first wall part (21) and the second wall part (22) as well as by the inside surface of the pipe section, and the pressure or a change of pressure is measured or a possible sealing defect of the pipe section is otherwise indicated.
Abstract:
An apparatus and method for pressure testing one or more sections of a pipeline are provided. In at least one embodiment, the apparatus includes a first high pressure seal and a second high pressure seal adapted to isolate a test volume located within a section of the pipeline between the first and second high pressure seals. The apparatus also includes at least one flexible member connecting the first high pressure seal to the second high pressure seal, the at least one flexible member adapted to permit movement of the first high pressure seal relative to the second high pressure seal, allowing the apparatus to travel through a curvature in the pipeline.
Abstract:
A method for monitoring and detecting coating defects in a defined section of a coated underground or underwater pipeline provided with a monitoring unit fixedly mounted by sections and at the end of the respective section and an apparatus used in the method.
Abstract:
Ultrasonic pipeline inspection apparatus which utilizes two different wave modes (e.g. a horizontally polarized shear mode and a symmetric Lamb wave mode) to discriminate different defect types by comparing corresponding signals collected from defects. EMATs may detect the signals. The detected amplitudes of the collected signals from both wave modes are compared to calculate a ratio, which may be compared with a distribution of ratio values for known defects to evaluate the type of defect detected. The apparatus may be a sensor module mountable on a pipeline vehicle and having a plurality of sensors distributed around its periphery.
Abstract:
The present application provides techniques and/or systems for inspecting a pipe, or rather measuring one or more characteristics of a pipe, using radiation. A carriage, mounted to the pipe, may provide a mechanism for propelling a radiation source and a detector along the pipe. The detector is configured such that it can receive radiation that has traversed both a wall of the pipe and an obstacle, such as a pipe support. In this way, portions of a pipe that are traditionally difficult to inspect may be inspected easily with minimal human intervention.
Abstract:
An installation for and a method for driving a submarine pipeline scraper, wherein one of the ends of the pipeline has a launch device and the other end has a receiving device. The scraper defines an upstream chamber and a downstream chamber. It can be launched inside the pipeline from the launch device in the direction of the receiving device, allowing water to enter through the launch device in order to subject the upstream chamber to hydrostatic pressure. The receiving device is identical to the launch device, such that water can enter through the receiving device in order to balance the pressure of the two chambers, and also enables a fluid to be injected into the downstream chamber to drive the scraper toward the launch device.
Abstract:
A pipeline inspection vehicle comprises a main body (10) driven through a pipeline by fluid flow against resilient cups (12). Resilient fingers (20) carry a circumferential array of magnetic proximity sensors for sensing the spacing between each sensor and the metal of the pipeline wall. Wheels (18) biased into engagement with the pipeline wall provide one form of distance measurement. The vehicle has on-board data storage by way of a memory housed within a pressure vessel.
Abstract:
An in-line pipe inspection tool has one or more inspection platforms (28, 30) which are connected to an elongate wheeled trolley by link arms (20 to 26). The trolley unit (10, 12) has drive means for driving the point of connection of the first link arm (20, 22) to the trolley (10) relative to the point of connection of the second link arm (24, 26) to the trolley (12), thereby to move the inspection platforms (28, 30) in a direction perpendicular to the direction of elongation of the trolley (10, 12). Thus the inspection platforms (28, 30) are movable which is relative to the trolley (10, 12) to permit the tool to be adapted to pipelines of different diameters. Moreover, the platforms (28, 30) preferably have permanent magnets which contain a rotatable magnet. The rotatable magnet permits the net magnetic field generated by the platform to be varied.
Abstract:
Systems, methods and program products of instructions stored on a computer readable medium related to a tether free piggable inspection tool capable of detecting holidays and able to read and store non-conductive internal coating thickness values in very long conductive pipes, along with distance values for further off-line analysis, are provided. The inspection tool includes a plurality of thickness probes, a data storage unit, a control unit, a plurality of navigation wheels and a holiday detector that uses an electrical conductive medium, such as a gas or fluid, as the ground connection. A closed loop configuration is adopted allowing the system to autocorrect itself for different coating thicknesses along the pipe.