measuring system

Abstract

Measuring system (10) for measuring gamma radiation (G), the measuring system (10) having a gamma sensor device (20) for measuring gamma radiation (G) and a positioning device (30) for determining the position of the gamma sensor device (20), characterized in that the measuring system (10) comprises a propulsion device (80) which is at least partially flexible, wherein the gamma sensor device (20) and the positioning device (30) are arranged on the propulsion device (80) and the propulsion device (80) is designed to propel the gamma sensor device (20) and the positioning device (30).

Description

[0001] The invention relates to a measuring system for measuring gamma radiation, in particular for buildings, rooms, pipes and devices with small, narrow and / or difficult to access openings, cross-sections and / or dimensions.

[0002] For example, during the dismantling and / or dismantling of a nuclear facility, a comprehensive verification requirement for compliance with activity limit values ​​for the components, plant sections, and / or structural sections is prescribed to ensure appropriate treatment of the components, plant sections, and / or structural sections depending on the activity. The operator of the exemplary nuclear facility, for example, fulfills this requirement through extensive series of measurements on the activity of the components, plant sections, and / or structural sections. Each activity value requires a verifiable, defined location to enable a permissible assessment of the components, plant sections, and / or structural sections.

[0003] The measurement systems currently publicly available in the state of the art for measuring gamma radiation are mostly designed as large-volume measurement systems. In contrast, the known, specialized measurement systems for measuring gamma radiation, particularly for structures, rooms, pipes, and / or devices with small, narrow, and / or difficult-to-access openings, cross-sections, and / or dimensions, usually have the disadvantage of low energy resolution and / or a rigid and / or inflexible design, at least in some sections. Known measurement systems, for example, are designed as rigid lances, which do not allow for deformation, bending, movement, and / or other adaptation to the local conditions of the device being measured.Measuring gamma radiation, especially for structures, rooms, pipes and / or devices with small, narrow and / or difficult-to-access openings, cross-sections and / or dimensions, is therefore unnecessarily difficult or even impossible with the known measuring systems.

[0004] It is therefore an object of the present invention to remedy, or at least partially remedy, the above-described disadvantages of the prior art. In particular, it is an object of the invention to provide a measuring system that enables particularly simple measurement of gamma radiation, particularly for structures, rooms, pipes, and / or devices with small, narrow, and / or difficult-to-access openings, cross-sections, and / or dimensions. In particular, it is also an object of the invention to provide a measuring method for measuring gamma radiation using a measuring system.

[0005] The above object is achieved by the claims. In particular, the object is achieved by a measuring system having the features of independent claim 1. Furthermore, the object is achieved by a measuring method and a computer program product. Further advantages and details of the invention emerge from the subclaims, the description, and the drawings. Features described in connection with the measuring system according to the invention naturally also apply in connection with the measuring method according to the invention, the computer program product according to the invention, and vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is always made to each other.

[0006] According to a first aspect of the invention, this object is achieved by a measuring system for measuring gamma radiation. The measuring system comprises a gamma sensor device for measuring gamma radiation and a positioning device for determining the position of the gamma sensor device. The measuring system is characterized and particularly advantageous in that the measuring system comprises a propulsion device that is at least partially flexible, wherein the gamma sensor device and the positioning device are arranged on the propulsion device, and the propulsion device is designed to propel the gamma sensor device and the positioning device.

[0007] A preferred aspect of the measuring system according to the invention is that the measuring system, in particular at least the gamma sensor device and the positioning device, are structurally compact enough for complex measuring geometries, such as pipes and / or narrow volumes, and at the same time have a sufficiently high spectral resolution to distinguish the emission lines of the anthropogenic radionuclides from those of the primordial radionuclides.

[0008] According to the invention, structures, rooms, pipes, and / or devices with small, narrow, and / or difficult-to-access openings, cross-sections, and / or dimensions are to be understood as difficult-to-access sections. For example, the measuring system according to the invention is intended to enable the measurement of gamma radiation in pipes, lines, and / or rooms with very limited dimensions and / or access points. For example, the gamma sensor device has dimensions of a front end face of less than 50 x 50 mm, preferably less than 40 x 40 mm, particularly preferably less than 30 x 30 mm. Furthermore, the gamma sensor device preferably has a longitudinal extension, in particular orthogonal to the end face, of less than 100 mm, preferably less than 75 mm, particularly preferably less than 51 mm.For example, the gamma sensor device is arranged and / or attached to the propulsion device according to the invention with a rear end face opposite the front end face.

[0009] The positioning device is designed to determine the position of the gamma sensor device. For this purpose, the positioning device and the gamma sensor device are preferably arranged in a defined manner relative to one another and / or are attached to the measuring system. Alternatively or additionally, the positioning device comprises a transmitting unit and a receiving unit and / or is designed to be wired. The transmitting unit is designed, for example, as a 512 Hz transmitting unit. The receiving unit is preferably designed as a triangulation tag and enables the position of the transmitting unit to be determined. The transmitting unit and / or the receiving unit can be designed to be active or passive. The positioning device enables the position of the gamma sensor device to be determined, preferably via a radio standard.Preferably, the positioning device is designed such that the positioning device compares a specific position of the gamma sensor device with a digital plan of the pipelines, structures, rooms and / or the otherwise designed device to be measured and thus enables an improvement in the position determination of the gamma sensor device.

[0010] The gamma sensor device is designed to measure gamma radiation. The gamma sensor device is preferably designed as a scintillation detector device to enable high resolution while maintaining compact dimensions. The gamma sensor device is preferably used to create high-resolution spectra and thus to determine nuclide-specific activities.

[0011] The measuring system according to the invention is particularly advantageous because the gamma sensor device and the positioning device are arranged on the propulsion device, and the propulsion device is designed to propel the gamma sensor device and the positioning device. The propulsion device is designed to be flexible, at least in sections. In contrast to known prior art, the propulsion device is thus not rigidly designed, but advantageously allows for bending, adjustment, and / or movement in order to advantageously enable a particularly simple measurement of gamma radiation, in particular for structures, rooms, pipes, and / or devices with small, narrow, and / or difficult-to-access openings, cross-sections, and / or dimensions.

[0012] Within the scope of the invention, the propulsion device is to be understood as a device for propelling the gamma sensor device and the positioning device. For example, the propulsion device enables the gamma sensor device and the positioning device to be inserted piece by piece into a pipe for measuring gamma radiation in the pipe. The propulsion device is preferably designed as a hose-like device and preferably enables a defined advance and / or a defined movement of the gamma sensor device and the positioning device, for example, in a pipe and / or in space. The propulsion device preferably corresponds in cross-section to the gamma sensor device and / or the positioning device or is designed smaller than the gamma sensor device and / or the positioning device in order to enable advantageously unhindered propulsion of the gamma sensor device and the positioning device.The propulsion device is preferably at least one meter long, particularly preferably several meters long, so that the propulsion device enables propulsion of the gamma sensor device and the positioning device over a corresponding length in pipelines, structures, rooms, and / or the otherwise configured devices to be measured. Within the scope of the invention, the propulsion device is preferably understood as a pig for pipes. The propulsion device is preferably flexible, but can be rigid if necessary. A propulsion device configured in this way enables a defined movement and position of the propulsion device, so that the propulsion device enables controlled advance of the propulsion device itself and the gamma sensor device and the positioning device.Clearly described, the propulsion device thus enables the gamma sensor device and the positioning device to be advanced through, for example, a pipeline, whereby the propulsion device preferably avoids contact and thus unwanted contamination of the measuring system with the pipe wall.

[0013] A measuring system designed in this way is particularly advantageous because the measuring system enables a particularly simple measurement of gamma radiation, in particular for buildings, rooms, pipes and / or devices with small, narrow and / or difficult-to-access openings, cross-sections and / or dimensions.

[0014] According to a preferred further development of the invention, a measuring system can be provided which comprises a computer unit, wherein the gamma sensor device and / or the positioning device are connected to the computer unit in a data-communicating manner by means of at least one conductor which is at least partially flexible. The at least one flexible conductor is preferably arranged and / or fastened at least partially within and / or on the propulsion device. The at least one flexible conductor preferably serves to transmit data from the gamma sensor device and / or the positioning device to the computer unit. The measuring system preferably comprises precisely one flexible conductor. The previously described comparison between determined position data from the positioning device and, for example, a digital plan is preferably carried out by the computer unit.Within the scope of the invention, the computer unit according to the invention is to be understood as an evaluation unit and / or storage unit for the acquired data on gamma radiation and / or the position of the gamma sensor device and / or the positioning device. A flexible conductor according to the invention is preferably to be understood as a cable, in particular a bus cable, and / or has a length that corresponds at least to the length of the propulsion device or substantially to the length of the propulsion direction. The formulation "X or substantially X" is to be understood within the scope of the invention as a possible, minor deviation, for example due to manufacturing tolerances, material and / or process properties, without changing the underlying, intended function of the feature.A measuring system configured in this way is particularly advantageous because the measuring system enables data transmission from the gamma sensor device and / or the positioning device to the computer unit, as well as evaluation and / or storage of the acquired data, using simple and cost-effective means. The at least partially flexible design of the at least one conductor enables advantageous mobility of the at least one conductor and thus of the propulsion device, the gamma sensor device, and / or the positioning device. Thus, the at least partially flexible design of the at least one conductor enables particularly simple measurement of gamma radiation, particularly for structures, rooms, pipes, and / or devices with small, narrow, and / or difficult-to-access openings, cross-sections, and / or dimensions.

[0015] According to a preferred further development of the invention, a measuring system can be provided in which the gamma sensor device and the positioning device are arranged in a common base body and / or at a free end of the at least one flexible conductor and / or the propulsion device. A common structural design of the gamma sensor device and the positioning device in the base body is particularly advantageous because the base body enables a defined arrangement of the gamma sensor device relative to the positioning device and vice versa. Thus, position determination of the gamma sensor device by the positioning device is advantageously improved and / or made more precise. A common base body is preferably designed as a housing for the gamma sensor device and the positioning device.Preferably, the gamma sensor device and the positioning device are arranged at a free end of the at least one flexible conductor, in particular wherein the gamma sensor device is arranged directly at the free end of the at least one flexible conductor and / or the propulsion device and wherein the positioning device is arranged at a distance from the free end of the at least one flexible conductor and / or the propulsion device, behind and / or next to the gamma sensor device.A measuring system designed in this way is particularly advantageous because the measuring system enables a particularly simple measurement of gamma radiation, in particular for buildings, rooms, pipes and / or devices with small, narrow and / or difficult-to-access openings, cross-sections and / or dimensions, through the common base body and / or through the arrangement of the gamma sensor device and the positioning device at a free end of the at least one flexible conductor and / or the propulsion device.

[0016] According to a preferred further development of the invention, it can be provided in a measuring system that the at least one flexible conductor and / or the at least partially flexible propulsion device comprises at least one movement device, wherein the movement device is designed for the at least partial movement of the flexible propulsion device and / or the at least one flexible conductor, in particular the free end of the flexible propulsion device and / or the at least one flexible conductor, in at least one plane, in particular in three planes. The movement device is to be understood within the scope of the invention as the device that enables a movement of the at least one flexible conductor and / or the at least partially flexible propulsion device. A measuring system designed in this way is preferably clearly described as comparable to the movement device of a known endoscope device.The movement device according to the invention preferably enables movement of the flexible propulsion device and / or the at least one flexible conductor, in particular of the free end of the flexible propulsion device and / or of the at least one flexible conductor, in at least one plane, in particular in three planes. The two or even three planes are preferably orthogonal to one another. In particular, the movement device is designed such that the movement device enables three-dimensional movement of the flexible propulsion device and / or the at least one flexible conductor, in particular of the free end of the flexible propulsion device and / or of the at least one flexible conductor. The structural design of the movement device is preferably embodied as a hydraulic, pneumatic and / or mechanical movement device.For example, the movement device has at least one pair of hydraulic actuators per movement plane to enable advantageous movement of the flexible propulsion device and / or the at least one flexible conductor, in particular of the free end of the flexible propulsion device and / or the at least one flexible conductor. The actuators are designed, for example, as cylinders. The movement device preferably enables movement of the flexible propulsion device and / or the at least one flexible conductor, in particular of the free end of the flexible propulsion device and / or the at least one flexible conductor, inclined and / or orthogonal to the longitudinal extent of the flexible propulsion device and / or the at least one flexible conductor.As described in more detail, a movement device thus enables movement and / or alignment of the propulsion device and / or the at least one flexible conductor, in particular the free end of the flexible propulsion device and / or the at least one flexible conductor, for example, within a pipe, for example around a curve of the pipe. The movement device is preferably connected to the computer unit for data communication and / or is controllable by the computer unit.

[0017] According to a preferred further development of the invention, it can be provided in a measuring system that the measuring system, in particular the propulsion device, has a drive device for driving the propulsion device, in particular for driving a movement of the propulsion device. In the context of the invention and in contrast to the previously described movement device of the measuring system, a drive device is preferably to be understood as a device for moving the propulsion device along the longitudinal extent of the flexible propulsion device and / or of the at least one flexible conductor. Clearly described, a drive device thus enables a movement of the propulsion device, for example, along a pipe and / or into a pipe. The drive device preferably enables the detection of a length of the propulsion device and / or the conductor that has been driven, propelled and / or moved, for example, into a pipe.Thus, the position determination of the gamma sensor device is advantageously improved, particularly in conjunction with a previously described digital plan of the structures, rooms, pipes and / or devices with small, narrow and / or difficult-to-access openings, cross-sections and / or dimensions. The drive device according to the invention is designed manually or mechanically, wherein a manual design enables, for example, drive by a user and / or wherein a mechanical design comprises, for example, drive by a motor. A measuring system designed in this way is particularly advantageous because the measuring system enables a particularly simple measurement of gamma radiation by the drive device, particularly for structures, rooms, pipes and / or devices with small, narrow and / or difficult-to-access openings, cross-sections and / or dimensions.

[0018] According to a preferred further development of the invention, a measuring system can be provided that the measuring system comprises an optical sensor device for optically detecting the environment of the optical sensor device, in particular wherein the optical sensor device is arranged at the free end of the propulsion device and / or the at least one flexible conductor. An optical sensor device according to the invention is preferably designed as a camera. The optical sensor device serves to optically detect the environment of the optical sensor device and thus advantageously enables improved guidance and / or navigation of the propulsion device, improved position determination of the gamma sensor device and / or improved avoidance of unwanted contact between the measuring system and the environment.A measuring system designed in this way is particularly advantageous because the measuring system enables a particularly simple measurement of gamma radiation, in particular for buildings, rooms, pipes and / or devices with small, narrow and / or difficult-to-access openings, cross-sections and / or dimensions, by means of the optical sensor device.

[0019] According to a preferred further development of the invention, a measuring system can be provided that the measuring system comprises a lighting device for illuminating the surroundings of the lighting device, in particular wherein the lighting device is arranged at the free end of the propulsion device and / or the at least one flexible conductor. A lighting device according to the invention is preferably designed as at least one lamp. The lighting device serves to illuminate the surroundings of the lighting device and thus advantageously enables improved guidance and / or navigation of the propulsion device, improved position determination of the gamma sensor device, and / or improved prevention of unwanted contact between the measuring system and the surroundings. In particular, in combination with the previous section and the feature of the optical sensor device, a lighting device represents an advantageous further development of the invention.A measuring system designed in this way is particularly advantageous because the measuring system enables a particularly simple measurement of gamma radiation, in particular for buildings, rooms, pipes and / or devices with small, narrow and / or difficult-to-access openings, cross-sections and / or dimensions, by means of the lighting device.

[0020] According to a preferred further development of the invention, a measuring system can be provided which comprises at least one holding device, wherein the holding device is designed to hold, in particular in a positionally secure manner, the propulsion device and / or the at least one flexible conductor, in particular the free end of the propulsion device and / or the at least one flexible conductor. A holding device according to the invention is to be understood within the scope of the invention as a device for securing the position, for defined holding, for dampening against, for example, vibrations and / or for stabilizing the propulsion device and / or the at least one flexible conductor. The holding device preferably comprises at least one hook, a holding arm and / or a support.Alternatively or additionally, the holding device comprises extendable and / or bendable elements, such as sheet metal, plastics, or other flexible materials, for supporting the holding device against the environment. Alternatively or additionally, the holding device comprises at least one bellows, wherein the bellows is inflatable to secure the position and provide support against the environment, in particular against a pipe, and is deflated to release the support. Preferably, the measuring system has more than one holding device, wherein the at least two holding devices are arranged, in particular uniformly, along the longitudinal extent of the propulsion device and / or radially around the propulsion device, the gamma sensor device, and / or the positioning device.The holding device preferably has at least one actuator, wherein the at least one actuator and / or the structural design of the holding device is preferably embodied as a hydraulic, pneumatic and / or mechanical holding device. The holding device according to the invention advantageously enables the position of the measuring system to be secured and / or contamination of the measuring system through controlled contact of the surroundings by the holding device and thus avoids contact of the surroundings with the rest of the measuring system. Furthermore, the holding device preferably enables a type of caterpillar movement of the measuring system, in particular of the propulsion device and / or of the free end of the at least one flexible conductor and / or the propulsion device.In this case, it is clearly described that, viewed from the free end of the propulsion device, a rear section of the propulsion device is held by a first holding device and, starting from this holding point, a front section of the propulsion device is advanced, for example by an actuator. Subsequently, a second holding device can be activated in the front section and create a further holding point. Subsequently, the first holding device and thus the first, rear holding point can be released and the rear section can be pulled along, for example by the aforementioned actuator. These movement and holding steps can be carried out repeatedly and thus advantageously enable a forward movement of the measuring system, in particular of the propulsion device, the gamma sensor device and the positioning device, by means of the holding device according to the invention.

[0021] According to a preferred further development of the invention, a measuring system can be provided which comprises a winding device, wherein the winding device is designed for winding and unwinding the propulsion device and / or the at least one flexible conductor, in particular wherein the winding device is designed to detect an unwound length of the propulsion device and / or the at least one flexible conductor. As described above, the propulsion device according to the invention is preferably several meters long, so that the propulsion device enables propulsion of the gamma sensor device and the positioning device over a corresponding length in pipelines, structures, rooms and / or the otherwise designed devices to be measured. It is therefore advantageous in practice if a propulsion device designed in this way can be wound and unwound on a winding device.It is further advantageous if an unwound length of the propulsion device and / or of the at least one flexible conductor can be detected via the winding device, in particular wherein the winding device is connected to the computer unit in a data-communicating manner in order to provide the data on the unwound length and thus advantageously improve the position determination of the gamma sensor device.

[0022] According to a preferred further development of the invention, a measuring system can be provided that the measuring system comprises an ablation device for ablation of contaminants from the surroundings of the ablation device, in particular wherein the ablation device is arranged at the free end of the propulsion device and / or of the at least one flexible conductor. The ablation is preferably absorbable and / or collectable by the ablation device. For example, the ablation is sucked away by a suction device of the measuring system and / or can be evaluated, for example, by a sensor device of the measuring system and / or by a separate laboratory gamma spectrometry.A measuring system configured in this way is particularly advantageous because it enables the measurement of gamma radiation and the removal of contaminants, particularly for structures, rooms, pipes, and / or devices with small, narrow, and / or difficult-to-access openings, cross-sections, and / or dimensions, particularly easily by the removal device. The removal device preferably comprises a textile, cloth, and / or other absorbent material. The removal is preferably carried out by the removal device during a movement of the propulsion device. The gamma sensor device can be used with the optical sensor device, the lighting device, and the removal device individually or in any combination.

[0023] According to a preferred further development of the invention, a measuring system can be provided in which the gamma sensor device comprises at least one scintillation probe, in particular wherein the scintillation probe comprises at least one strontium iodide crystal. The gamma sensor device according to the invention is designed for measuring gamma radiation. The gamma sensor device is preferably designed as a scintillation detector device with at least one scintillation probe in order to enable high resolution and, at the same time, small dimensions of the gamma sensor device. Scintillation detectors do not require cooling and thus advantageously enable a small installation space requirement. The gamma sensor device is preferably used to create high-resolution spectra and thus to determine nuclide-specific activities.Since strontium iodide has a naturally stable isotopic composition, the corresponding crystals exhibit a particularly low intrinsic activity compared to commercially available scintillators with high energy resolution. Compared to, for example, LaBr(Ce) scintillators, the intrinsic activity of strontium iodide crystals is up to forty times lower. The energy resolution is the smallest separation between two energies at which the two photopeaks can still be evaluated separately. For example, the gamma sensor device according to the invention has an energy resolution of at most 6% at 122 keV, at most 3.2% at 662 keV, and / or at most 2% at 1333 keV. Preferably, the gamma sensor device according to the invention has an energy resolution of at most 3.2 to 3.5% across the entire energy spectrum.

[0024] According to a second aspect of the invention, the object is achieved by a measuring method for measuring gamma radiation using a measuring system. The measuring method comprises the following method steps: - Providing the measuring system, - Determining at least one position of the gamma sensor device by the positioning device of the measuring system, - Measuring gamma radiation using the gamma sensor device of the measuring system.

[0025] The measuring system is preferably configured according to the first aspect. The described measuring method yields all the advantages already described for the measuring system according to the first aspect of the invention. The method steps described above and below can, unless explicitly stated otherwise, be carried out individually, together, once, multiple times, in parallel, and / or sequentially in any desired order. Designation as, for example, "first method step" and "second method step" does not imply any chronological order and / or prioritization. A preferred sequence of the method steps provides that the method steps are carried out in the order listed.

[0026] According to a preferred further development of the invention, the measuring method may further comprise at least one of the following method steps: - transmitting the recorded data on the at least one position and the gamma radiation to the computer unit of the measuring system, - advancing the at least partially flexible propulsion device and / or the at least one flexible conductor, in particular by means of the movement device of the measuring system and / or by means of the holding device of the measuring system, - detecting a driven and / or unwound length of the at least partially flexible driving device and / or of the at least one flexible conductor by the winding device of the measuring system, - Removal of contaminants from the area surrounding the removal device by the removal device of the measuring system.

[0027] According to a third aspect of the invention, a computer program product is provided. The computer program product comprises instructions which, when executed by a computer unit, in particular the instructions and / or the computer program product, cause the computer unit to execute a measurement method according to the invention.

[0028] Thus, a computer program product according to the invention brings with it the same advantages as have already been described in detail with reference to a measuring method according to the invention. The method can in particular be a computer-implemented method. The computer program product can be implemented as computer-readable instruction code in any suitable programming language, such as JAVA, C++, C# and / or Python. The computer program product can be stored on a computer-readable storage medium such as a data disk, a removable drive, a volatile or non-volatile memory, or a built-in memory / processor. The instruction code can influence or control a computer or other programmable devices such as a computing unit of a measuring system such that the instructions are executed.Furthermore, the computer program product can be made available on a network, such as the Internet, from which it can be downloaded by a user as needed. The computer program product can be implemented using software or one or more special electronic circuits, i.e., in hardware or in any hybrid form, i.e., using software components and hardware components.

[0029] A measuring system according to the invention and a measuring method are explained in more detail below with reference to the drawings. They show schematically: Fig. 1 shows a perspective view of a measuring system with a gamma sensor device, a positioning device, a propulsion device, a winding device and a computer unit, Fig. 2 shows a perspective view of a measuring system with a gamma sensor device, a positioning device, a propulsion device, a holding device and a removal device, and Fig. 3 shows a flow chart of a measuring method according to the invention.

[0030] Elements with the same function and mode of action are listed in the Fig. 1 to 3 are each provided with the same reference numerals.

[0031] In Fig. 1 schematically shows a perspective view of a measuring system 10 for measuring gamma radiation G. The measuring system 10 has a gamma sensor device 20 for measuring gamma radiation G and a positioning device 30 for determining the position of the gamma sensor device 20. The measuring system 10 further comprises a flexible propulsion device 80, wherein the gamma sensor device 20 and the positioning device 30 are arranged on the propulsion device 80, and the propulsion device 80 is configured to propel the gamma sensor device 20 and the positioning device 30. The measuring system 10 has a computer unit 40, wherein the gamma sensor device 20 and the positioning device 30 are connected to the computer unit 40 by a flexible conductor 50 for data communication.The gamma sensor device 20 and the positioning device 30 are arranged in a common base body 22 and at a free end 52 of the at least one flexible conductor 50 and the propulsion device 80. The flexible conductor 50 and the flexible propulsion device 80 comprise, for example, three movement devices 54, wherein the movement devices 54 are designed to move the flexible propulsion device 80 and the flexible conductor 50, here the free end 52 of the flexible propulsion device 80 and the flexible conductor 50, in three planes. The measuring system 10, here the propulsion device 80, has a drive device 84 for driving the propulsion device 80, here a movement of the propulsion device 80.The measuring system 10 comprises a winding device 82, wherein the winding device 82 is designed for winding and unwinding the propulsion device 80 and the at least one flexible conductor 50, wherein the winding device 82 is designed for detecting an unwound length of the propulsion device 80 and the flexible conductor 50.

[0032] In Fig. 2 schematically shows a further measuring system 10 for measuring gamma radiation G. The measuring system 10 comprises, in addition to the embodiments for Fig. 1, an optical sensor device 60 for optically detecting the surroundings of the optical sensor device 60, wherein the optical sensor device 60 is arranged at the free end 52 of the propulsion device 80 and the at least one flexible conductor 50. The measuring system 10 further comprises a lighting device 70 for illuminating the surroundings of the lighting device 70, wherein the lighting device 70 is also arranged at the free end 52 of the propulsion device 80 and the at least one flexible conductor 50. The measuring system 10 further comprises a holding device 90, wherein the holding device 90 is designed to securely hold the propulsion device 80 and the at least one flexible conductor 50, here the free end 52 of the propulsion device 80 and the flexible conductor 50.The holding device 90 is designed here as a bellows, which can be inflated to secure the position and provide support against the environment, here against a pipe, and can be deflated to release the support. The measuring system 10 comprises a removal device 92 for removing contaminants from the environment of the removal device 92. The removal device 92 is arranged at the free end of the propulsion device 80 and the at least one flexible conductor 50, behind the holding device 90.

[0033] In Fig. 3 shows a schematic flow chart of a measuring method 100 according to the invention. Fig.3, only the reference numerals of the method steps are shown for clarity. The measuring method 100 comprises, in a first method step, providing 102 the measuring system 10. The measuring system 10 is preferably configured according to the first aspect. The measuring method 100 comprises, in a further method step, determining 104 at least one position P of the gamma sensor device 20 by the positioning device 30. The measuring method 100 comprises, in a further method step, measuring 106 gamma radiation G by the gamma sensor device 20. The measuring method 100 comprises, in a further method step, transmitting 108 the data relating to the at least one position P and the gamma radiation G to the computer unit 40.The measuring method 100 comprises, in a further method step, the advancing 110 of the at least partially flexible propulsion device 80 and / or the at least one flexible conductor 50 through the movement device 54 and the holding device 90. The measuring method 100 comprises, in a further method step, the detection 112 of an advanced and unwound length of the flexible propulsion device 80 and the flexible conductor 50 by the winding device 82. The measuring method 100 comprises, in a further method step, the removal 114 of contaminants from the surroundings of the removal device 92 by the removal device 92. List of reference symbols 10 Measuring system 20 Gamma sensor device 22 basic bodies 30 Positioning device 40 computer unit 50 ladders 52 free end 54 Movement device 60 optical sensor device 70 lighting device 80 propulsion device 82 Winding device 84 Drive device 90 holding device 92 removal device 100 measuring methods 102 Provision 104 Determine 106 trade fairs 108 Transfer 110 Driving forward 112 Capture 114 Removal G gamma radiation P Position

Claims

[1] Measuring system (10) for measuring gamma radiation (G), the measuring system (10) comprising a gamma sensor device (20) for measuring gamma radiation (G) and a positioning device (30) for determining the position of the gamma sensor device (20), characterized by in that the measuring system (10) comprises a propulsion device (80) which is at least partially flexible, wherein the gamma sensor device (20) and the positioning device (30) are arranged on the propulsion device (80) and the propulsion device (80) is designed to propel the gamma sensor device (20) and the positioning device (30). [2] Measuring system (10) according to claim 1, characterized by that the measuring system (10) has a computer unit (40), wherein the gamma sensor device (20) and / or the positioning device (30) are connected to the computer unit (40) in a data-communicating manner by means of at least one conductor (50) which is at least partially flexible. [3] Measuring system (10) according to one of the preceding claims, characterized by that the gamma sensor device (20) and the positioning device (30) are arranged in a common base body (22) and / or at a free end (52) of the at least one flexible conductor (50) and / or the propulsion device (80). [4] Measuring system (10) according to one of the preceding claims, characterized by in that the at least one flexible conductor (50) and / or the at least partially flexible propulsion device (80) comprises at least one movement device (54), wherein the movement device (54) is designed for the at least partial movement of the flexible propulsion device (80) and / or the at least one flexible conductor (50), in particular the free end (52) of the flexible propulsion device (80) and / or the at least one flexible conductor (50), in at least one plane, in particular in three planes. [5] Measuring system (10) according to one of the preceding claims, characterized by that the measuring system (10), in particular the propulsion device (80), has a drive device (84) for driving the propulsion device (80), in particular a movement of the propulsion device (80). [6] Measuring system (10) according to one of the preceding claims, characterized by that the measuring system (10) comprises an optical sensor device (60) for optically detecting the surroundings of the optical sensor device (60), in particular wherein the optical sensor device (60) is arranged at the free end (52) of the propulsion device (80) and / or of the at least one flexible conductor (50). [7] Measuring system (10) according to one of the preceding claims, characterized bythat the measuring system (10) comprises a lighting device (70) for illuminating the surroundings of the lighting device (70), in particular wherein the lighting device (70) is arranged at the free end (52) of the propulsion device (80) and / or of the at least one flexible conductor (50). [8] Measuring system (10) according to one of the preceding claims, characterized by that the measuring system (10) comprises at least one holding device (90), wherein the holding device (90) is designed to hold, in particular in a positionally secure manner, the propulsion device (80) and / or the at least one flexible conductor (50), in particular the free end (52) of the propulsion device (80) and / or the at least one flexible conductor (50). [9] Measuring system (10) according to one of the preceding claims, characterized bythat the measuring system (10) comprises a winding device (82), wherein the winding device (82) is designed for winding and unwinding the propulsion device (80) and / or the at least one flexible conductor (50), in particular wherein the winding device (82) is designed for detecting an unwound length of the propulsion device (80) and / or the at least one flexible conductor (50). [10] Measuring system (10) according to one of the preceding claims, characterized by that the measuring system (10) comprises a removal device (92) for removing contaminants from the environment of the removal device (92), in particular wherein the removal device (92) is arranged at the free end (52) of the propulsion device (80) and / or of the at least one flexible conductor (50). [11] Measuring system (10) according to one of the preceding claims, characterized bythat the gamma sensor device (20) comprises at least one scintillation probe, in particular wherein the scintillation probe comprises at least one strontium iodide crystal.

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