The present invention is capable of determining the location(s) of waste (e.g. nuclear fuel debris, obstacles, contaminated or otherwise radioactive materials), monitoring and inspecting their surroundings, and transporting them, as well as use in repair, construction, and reactor decommissioning work in high radiation environment. Ultrasound (or sound) waves are not subject to interference from radiation. This modality is utilized in the present invention to detect and image waste and/or objects of interest. The system combines the resulting ultrasound (or sound) wave images for detecting waste and/or objects of interest with radiation information acquired by a radiation detector, to generate and adjust new composite images to display. For example, the image in the direction of strong radiation is red and the image in the direction of weak radiation is blue. Additionally, the constituent imaging apparatus may be fitted on a drone or robotic system for repair and construction work.

Provided is a radioactive contamination inspection device, including: a detection unit having a sensitive surface that has a shape conforming to a shape of an object surface, which is a measurement target and a radioactive contamination amount of which is to be measured; a mechanism unit for holding the detection unit in a state in which a distance from the sensitive surface to the object surface falls within a desired range set in advance; and a measurement unit for calculating the radioactive contamination amount of the object surface on the basis of a measurement result from the detection unit.

Provided is a radioactive contamination inspection device, including: a detection unit having a sensitive surface that has a shape conforming to a shape of an object surface, which is a measurement target and a radioactive contamination amount of which is to be measured; a mechanism unit for holding the detection unit in a state in which a distance from the sensitive surface to the object surface falls within a desired range set in advance; and a measurement unit for calculating the radioactive contamination amount of the object surface on the basis of a measurement result from the detection unit.

The method and device to ensure the safety of people's life and health is based on the measurements of an intensity of spontaneous electromagnetic radiation caused by a deformation from a structure or a device, a nucleation and a growth of plant cells and living organisms; calculating an energy stored in a portion of a structure or cells based on the measured intensity; performing a comparison of the energy stored in the portion of the structure with a critical value for the structure and pathological changes in the cells; and indicate a potential failure of the structure or the level of pathological changes based on the performed comparison.

The method and device to ensure the safety of people's life and health is based on the measurements of an intensity of spontaneous electromagnetic radiation caused by a deformation from a structure or a device, a nucleation and a growth of plant cells and living organisms; calculating an energy stored in a portion of a structure or cells based on the measured intensity; performing a comparison of the energy stored in the portion of the structure with a critical value for the structure and pathological changes in the cells; and indicate a potential failure of the structure or the level of pathological changes based on the performed comparison.

The present invention relates to a system (10) and method for the volumetric and isotopic identification of the spatial distribution of ionizing radiation from point or extensive radioactive sources (3) in radioactive surroundings. More specifically, this system (10) comprises a gamma radiation detector (2) and an optical transducer (1) joined to each other and linked to a control unit to detect the absolute position of radioactive sources (3) relative to a visual reference located in the radioactive surroundings, and to determine the radioactive activity of the sources, that is to say it detects the isotope composition of the radioactive sources (3).

A method for estimating a dose rate, on the basis of measurements taken by a gamma camera (2), the gamma camera defining an observation field (Ω), the estimated dose rate originates from irradiating sources (10.sub.a, 10.sub.b) located in the observation field, the irradiating sources emitting ionizing electromagnetic radiation; the observation field is discretized into a mesh; the gamma camera (2) comprises pixels (2.sub.j), each pixel being configured to detect the ionizing electromagnetic radiation, during an acquisition time, and to form an energy spectrum therefrom, each pixel being associated with at least one point of the mesh, such that together the pixels allow a position of the irradiating sources in the observation field to be obtained in one energy band or in a plurality of energy bands; the method comprising estimating a dose rate generated, at the gamma camera, by points of the mesh.

A water tank apparatus for use with a radiotherapy system, comprising a base, side walls, end walls, and a top wall, together defining a tank structure, wherein an aperture is defined in the top wall near one end wall, and an upstanding rim surrounding the aperture; and a sensor mounting body fixed within the tank structure, and having formations by which a radiation sensor can be located in a fixed position within the tank structure so as to detect radiation at a point equidistant from the side wall and top wall and base.

A method of measuring a radon concentration or a radon exposure level comprising: placing a plurality of individual radon measurement instruments at locations, each instrument being capable of data output; receiving radon measurement data from each of said plurality of instruments; combining said data from said plurality of instruments into a single data set; and calculating a radon concentration or radon exposure value from said single data set. Using a plurality of individual detectors and combining their data provides a much better overall analysis of radon concentration or radon exposure level. The calculated value may include producing an average of the radon concentrations across the multiple instruments. The average may be weighted with weights determined according to different locations such as proximity to ventilation devices or based on the time that an average user spends in each location.

A method of measuring a radon concentration or a radon exposure level comprising: placing a plurality of individual radon measurement instruments at locations, each instrument being capable of data output; receiving radon measurement data from each of said plurality of instruments; combining said data from said plurality of instruments into a single data set; and calculating a radon concentration or radon exposure value from said single data set. Using a plurality of individual detectors and combining their data provides a much better overall analysis of radon concentration or radon exposure level. The calculated value may include producing an average of the radon concentrations across the multiple instruments. The average may be weighted with weights determined according to different locations such as proximity to ventilation devices or based on the time that an average user spends in each location.