JP6643888B2 - measuring device - Google Patents

Description

  The present invention relates to a measuring device used by being immersed in water.

  For example, to measure the radiation amount of incidental water generated as a by-product when mining drainage, oil and gas discharged from a nuclear power plant, and to perform safety management, for example, immerse in water and measure the radiation amount There is an apparatus described in Patent Document 1.

JP 2011-191090 A

  However, the measuring device described in Patent Literature 1 can measure the amount of radiation present in water, but cannot specify the state of the radiation source in water. It is not possible to establish a method for removing a radiation source in water using the measuring device described in Document 1.

  The present application has been made in view of the above-described problem, and provides a measurement device that measures a radiation dose existing in water and that can establish a method for removing a radiation source existing in water. This is the main issue.

The measuring device of the present invention is a measuring device using water as a measuring object, a radiation measuring unit for measuring a radiation dose contained in water, a water quality measuring unit for measuring at least two or more indices relating to physical properties of water, A display data output unit that receives the measurement data measured by the radiation measurement unit and the water quality measurement unit at the same timing in the same measurement area, and outputs display data for sequentially displaying the measurement data, I do.
More preferably, a device further including a display unit for receiving and displaying the display data can be cited.

  This makes it possible to sequentially display the radiation dose measured by the radiation measuring means and the indices relating to the physical properties of the two or more waters measured by the water quality measuring means on the display unit. Can be found to be more correlated with the radiation dose. Then, since the state of the radiation source existing in the water can be specified from this correlation, a radiation source removal process can be established to remove the radiation source.

  In addition, since one measurement device is provided with a radiation measurement unit and a water quality measurement unit, and they perform measurement at the same timing in the same measurement area, compared to a case where the radiation measurement unit and the water quality measurement unit are separately provided, Measurement can be performed under the same measurement conditions, and a highly reliable correlation can be found.

  As a specific aspect of the measurement device of the present invention, the radiation measurement unit and the water quality measurement unit receive measurement data measured at the same timing in the same measurement area, and link time data indicating time to the measurement data. A recording unit that sequentially records the measurement data, wherein the display unit further displays the measurement data recorded by the recording unit in association with predetermined time data.

  Thereby, the past measurement data measured by the radiation measurement unit and the water quality measurement unit are recorded in the recording unit in association with the time, and the past measurement data recorded in the recording unit is displayed on the display unit. Therefore, if the measured values indicated by the past measured data are also checked, the change in the measured values can be understood, and the correlation can be more easily found.

  As another specific embodiment of the measuring apparatus of the present invention, an index relating to the physical properties of water measured by the water quality measuring means may include any of turbidity, pH, and electrical conductivity.

  Thereby, the radiation dose, the turbidity, and the pH (or electric conductivity) are measured. For example, when the turbidity increases as the radiation dose increases, the pH (or electric conductivity) does not change. Indicates that radiation dose and turbidity are correlated. From this correlation, it can be seen that the radiation source does not dissolve in the water, and the radiation source is attached to the earth and sand in the water.Therefore, as a method of removing the radiation source, establish a treatment process to remove the earth and sand. Can be. On the other hand, when the radiation dose increases and the turbidity does not change and the pH (or electric conductivity) changes, it can be seen that the radiation dose and the pH (or electric conductivity) are correlated. The correlation shows that the radiation source is dissolved in water and is ionized. Therefore, as a method for removing the radiation source, establish a process for removing ions using an ion exchange membrane or a coagulant. Can be. That is, by measuring the radiation dose, turbidity, and pH (or electrical conductivity), the radiation source can be used to determine whether or not the radiation source is dissolved in water, whether it is soluble in alkali or acidic, or solid. It is possible to specify the state of the radiation source such as whether it is attached to a substance or whether it is present in the form of ions, and to optimize the radiation source removal process.

  As another specific mode of the measuring device of the present invention, the display unit may be configured to display a time change of a radiation dose, a time change of a turbidity, a time change of a pH (or electric conductivity), an ORP, or an ion concentration. May be displayed so as to be comparable. As a method of displaying in a comparable manner, a method in which the display unit displays the time change of the radiation dose, the time change of the turbidity, and the time change of the pH (or electric conductivity) in a graph format may be mentioned. it can.

  Thus, the time change of the radiation dose, the time change of the turbidity, and the time change of the pH (or electric conductivity) are displayed in a comparable manner, so that the radiation dose is turbidity or pH (or electric conductivity). Can be easily determined, and by displaying this in a graphical format, it is easier to find out which radiation dose is correlated with the visual effect. . Therefore, the state of the radiation source in the water can be more easily specified, and the radiation source can be quickly removed.

  As another specific aspect of the measurement device of the present invention, the measurement device further includes a region data acquisition unit that acquires position data or weather data in the measurement region, and the measurement data measured by the radiation measurement unit and the water quality measurement unit. In addition, in the measurement area measured by the radiation measuring means and the water quality measuring means, the position data or the weather data acquired by the area data acquiring means may be recorded in association with each other.

  Thereby, for example, from the weather data linked to the measurement data, the weather at the time the measurement data is obtained can be known.For example, if the radiation dose increases during rainy weather, the radiation dose may be reduced due to environmental radiation due to rain. The increase can be estimated. Also, for example, when measuring devices are arranged on the upstream side and the downstream side of the river, respectively, and when the transition of the radiation dose moving from the upstream side to the downstream side is confirmed, if the position data is associated with the measurement data, the upstream side By comparing the measured radiation dose data with the measured radiation dose on the downstream side, it is possible to measure the speed or the like of the radiation source flowing from the upstream side to the downstream side.

  ADVANTAGE OF THE INVENTION According to this invention, while measuring a radiation dose, the removal processing method of the radiation source which exists in water can be established.

FIG. 1 is a schematic diagram of a measurement device according to a first embodiment of the present invention. FIG. 2 is a circuit diagram of the measuring device according to the embodiment. FIG. 3 is a screen diagram showing a display example on a display in the embodiment. FIG. 6 is a circuit diagram of a measuring device according to a second embodiment of the present invention. FIG. 2 is a schematic diagram showing an arrangement position of a measuring device in the embodiment. FIG. 3 is a screen diagram showing a display example on a display in the embodiment.

  An embodiment of the measuring device of the present invention will be described below with reference to the drawings.

  The measuring device of the present invention is a portable device used by immersing it in water, for example, environmental protection of rivers and lakes, safety management of water discharged from a nuclear power plant, and oil such as shale gas. It is used to confirm the safety management of incidental water generated as a by-product when mining gas and gas.

<First embodiment>
As shown in FIG. 1, the measuring device 1 according to the first embodiment includes a sensor probe 2 used by being immersed in water, and a sensor main body 3 connected to the sensor probe 2 by a lead wire 4. .

  The sensor probe 2 has a substantially cylindrical rod shape, and a lead wire 4 connected to the sensor body 3 is attached to a terminal portion. As shown in FIG. 2, the apparatus includes a radiation measuring means 5 for measuring a radiation dose contained in water, and a water quality measuring means 6 for measuring at least two or more indices relating to physical properties of water.

  The radiation measuring means 5 measures the radiation using a substance (scintillator) that generates fluorescence or phosphorescence by ionizing radiation existing in water. In the present embodiment, in order to improve the scintillation performance, Thallium-activated cesium iodide is used for the scintillator. Further, the radiation measuring means 5 measures the radiation dose at predetermined time intervals, and sequentially transmits the measured radiation dose to the sensor body 3.

  The water quality measuring means 6 measures at least two or more indices relating to the physical properties of water. In the present embodiment, the water quality measuring means 6 measures a pH, a pH, an electric conductivity, and a turbidity. It has a function as a degree meter. In addition, the water quality measuring means 6 also measures indices (in this embodiment, pH, electric conductivity, turbidity) relating to the physical properties of water at predetermined time intervals, and sequentially transmits the measured values to the sensor body 3. Things.

  The sensor body 3 receives radiation dose data indicating the radiation dose measured by the radiation measuring unit 5 and water quality data (pH data, turbidity data, and electrical conductivity data) indicating the measurement value measured by the water quality measuring unit 6. And a control unit 8 for controlling the display unit 7.

  The display unit 7 is configured by a liquid crystal display or the like provided on the sensor main body 3, and displays radiation dose data indicating the radiation dose measured by the radiation measuring unit 5 and measurement values measured by the water quality measuring unit 6. It receives water quality data (pH data, turbidity data, electric conductivity data) and sequentially displays the radiation dose data and water quality data. Here, since the radiation measuring means 5 and the water quality measuring means 6 each perform measurement at predetermined time intervals, the display unit 7 also receives data at these time intervals and displays them one after another.

  In this embodiment, the display unit 7 converts the respective data into display data for displaying and outputting on a display, but is also configured to be able to output the display data to the outside. That is, the display unit 7 also has a function as a display data output unit. The display data output from the display data output unit is transmitted to an external device such as a personal computer, a tablet, or a portable device by wireless or wire, and can be displayed on the display. Therefore, it is not always necessary to provide the display unit 7 in the sensor body 3.

  The control unit 8 is structurally a so-called computer circuit having a CPU, an internal memory, an I / O buffer circuit, an AD converter, and the like. Then, by operating according to the control program stored in a predetermined area of the internal memory, the CPU and the peripheral device cooperate to exhibit the functions as the recording unit 9 and the control main unit 10 as shown in FIG.

The recording unit 9 receives radiation dose data indicating the radiation dose measured by the radiation measurement unit 5 and water quality data (pH data, turbidity data, and electrical conductivity data) indicating the measurement values measured by the water quality measurement unit 6. Then, the radiation dose data and the water quality data are sequentially recorded in association with time data indicating time. Here, the time data indicates the measurement start time obtained by the clock provided in the radiation measuring means 5 and the water quality measuring means 6, and the recording unit 9 transmits the time data from the radiation measuring means 5 and the water quality measuring means 6. Time data together with radiation dose data and water quality data.
The method of acquiring the time data is not limited to the method described above, and the time at which the measurement data is received from the clock provided in the control unit 8 may be used as the time data.

  The control main unit 10 acquires radiation dose data and water quality data recorded in the recording unit 9 in association with predetermined time data, and causes the display unit 7 to display the data. In the present embodiment, the control main unit 10 controls the radiation dose measured by the radiation measurement unit 5 and the water quality measurement unit 6 immediately before the radiation dose data and the water quality data currently displayed on the display unit 7 are measured. Data and water quality data are acquired from the recording unit 9 and are displayed on the display unit 7.

  The operation of the measuring device 1 according to the first embodiment configured as described above will be described.

  First, when the sensor probe 2 is immersed in water, the radiation measuring means 5 and the water quality measuring means 6 measure at the same timing in the same measurement area. Then, radiation dose data indicating the radiation dose measured by the radiation measuring means 5 and water quality data (pH data, turbidity data, and electrical conductivity data) indicating the measured values measured by the water quality measuring means 6 are recorded on the display unit 7 and recorded. It is transmitted to the unit 9. At this time, time data indicating the time at the time of measurement acquired by the clocks provided in the radiation measuring means 5 and the water quality measuring means 6 is also transmitted to the recording unit 9. The radiation measuring means 5 and the water quality measuring means 6 repeat the above-described operation at predetermined time intervals.

  The display unit 7 receives the radiation dose data and the water quality data, and sequentially displays the data. The recording unit 9 receives the radiation dose data, the water quality data, and the time data, and sequentially records the radiation data and the water quality data in association with the time data.

  The control main unit 10 acquires the radiation dose data and the water quality data measured immediately before the radiation dose data and the water quality data currently displayed on the display unit 7 are measured from the recording unit 9 and transmits the data to the display unit 7. I do. The display unit 7 displays the radiation dose data and the water quality data sent from the control main unit 10.

  The measuring device 1 configured as described above has the following special effects.

  That is, the radiation dose measured by the radiation measuring means 5 and the indices (pH, turbidity, and electrical conductivity) measured by the water quality measuring means 6 are displayed on the display unit 7, and the recording unit 9 is provided. The measured value and the past measured value are displayed on the display unit 7, so that the change of the measured value can be confirmed from the display unit 7, and any one of pH, turbidity, and electric conductivity correlates with the radiation dose. Can be found. Then, the state of the radiation source can be specified from this correlation, and the removal process can be established.

  Specifically, when the turbidity increases as the radiation dose increases and the pH and the electrical conductivity do not change, it is understood that the radiation dose and the turbidity are correlated. From this correlation, it can be seen that the radiation source does not dissolve in the water, and the radiation source is attached to the earth and sand in the water.Therefore, as a method of removing the radiation source, establish a treatment process to remove the earth and sand. Can be.

  On the other hand, as the radiation dose increases, the turbidity does not change and the pH shifts to acidic or alkaline, or when the electrical conductivity changes, the radiation dose correlates with the pH and the electrical conductivity. You can see that. The correlation shows that the radiation source is dissolved in water and is ionized. Therefore, as a method for removing the radiation source, establish a process for removing ions using an ion exchange membrane or a coagulant. Can be.

  That is, by measuring radiation dose, turbidity, and pH (or electrical conductivity) and finding the correlation therebetween, it is possible to specify the state of whether or not the radiation source is dissolved in water. In addition, the radiation source removal treatment process can be optimized.

  In addition, since the radiation measuring means 5 and the water quality measuring means 6 are provided in one measuring device 1 and they are measured at the same timing in the same measuring area, compared with the case where the radiation measuring means and the water quality measuring means are separately provided. Thus, measurement can be performed under almost the same measurement conditions, and a highly reliable correlation can be found.

  As a method of displaying the change of the measured value, a method of displaying in a graph format as shown in FIG. 3 may be used in addition to the method described above. In this case, the control main unit 10 acquires all data recorded during the predetermined time from the recording unit 9 and, based on these data, the time change of the radiation dose data, the time change of the turbidity data, Graph data indicating the time change of the pH data and the time change of the electric conductivity is generated and transmitted to the display unit 7. The display unit 7 receives the graph data and displays a graph indicated by the graph data. At this time, a graph showing the time change of the radiation dose, a graph showing the time change of the turbidity, a graph showing the time change of the pH, and a graph showing the time change of the electric conductivity may be displayed side by side. Graphs may be superimposed and displayed. In the case of FIG. 4, it is understood that the relationship between the radiation dose and the turbidity is high.

  With this configuration, the time change of the radiation dose, the time change of the turbidity, the time change of the pH, and the time change of the electric conductivity are displayed in a graph format so that they can be compared with each other. Can more easily find out which index the radiation dose is correlated with.

  Further, the control main unit 10 may be configured to determine whether the radiation dose is correlated with turbidity or pH (or electrical conductivity). In this case, the control main unit 10 may display the correlated index in an emphasized manner.

<Second embodiment>
The measuring device 11 according to the second embodiment will be described below.
The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  As shown in FIG. 4, the measuring device 21 in the second embodiment includes a region data acquisition unit that acquires at least one of position data and weather data of a measurement region where the radiation measurement unit 5 and the water quality measurement unit 6 perform measurement. 22. In this embodiment, it is assumed that both position data and weather data are acquired.

As the area data obtaining means 22, a GPS position sensor provided on the sensor probe 2 for obtaining position data of the measurement area, an application for obtaining weather data of the measurement area from, for example, the Japan Meteorological Agency or the like can be used. The data obtained by the area data obtaining means 22 is not limited to position data and weather data, but may be, for example, data for obtaining humidity data, temperature data, water depth data, and the like.
Since the GPS position sensor cannot receive a GPS signal underwater, only the GPS position sensor 22 may be separated from the casing of the sensor probe 2 and floated from the water, for example, as shown in FIG. 5, or This may be provided in the sensor main body 3.

  The area data acquisition unit 22 transmits the acquired position data and weather data to the recording unit 9. The recording unit 9 records the measurement data measured by the radiation measurement unit 5 and the water quality measurement unit 6 and the time data acquired by the radiation measurement unit 5 and the water quality measurement unit 6 in association with the position data and the weather data.

  The measuring device 21 of the second embodiment configured as described above has the following special effects.

  That is, when the radiation dose is increasing, the weather data associated with the measurement data indicating the radiation dose can be confirmed. At this time, for example, if the radiation dose increases during rainy weather, it can be estimated that the radiation dose has increased due to environmental radiation due to rain.

In addition, as shown in FIG. 5, when two measuring devices 21 of the present embodiment are arranged on the upstream side and the downstream side of the river, the measurement is performed at the same timing on the upstream and the downstream, respectively. If the measured values are linked to the position data and recorded by the recording unit 9 of each measuring device 21, the measurement data linked to the upstream position data and the measurement data linked to the downstream position data can be obtained. Can be measured to measure the speed at which the radiation source flowing through the river flows.
In addition, FIG. 6 shows a display example in which the measurement data is processed using the measuring device 21 at each of three places (A, B, and C) of the river and integrated and displayed. From this example, the radiation dose increases at the point a after the confluence of the river B compared to the point a on the river A upstream of the confluence with the river B, so the radiation source is located upstream of the river B. It can be guessed that it is flowing into River A. Further, at that time, since the pH at point A is considerably higher than that at point A, it is presumed that a large amount of radiation sources attached to or combined with components soluble in alkali flow into River B. Note that, here, the graph is displayed in a graph format in which the horizontal axis is a position, for example, but is displayed in a map format (for example, the value of each measurement data is represented by a bar height at each predetermined point on the map). You may do so.

  The present invention is not limited to the above embodiment.

  For example, the radiation measuring means is not limited to the scintillator method, and may use a Geiger-Muller counter tube, a semiconductor detector, or the like.

  Indices representing the physical properties of water measured by the water quality measuring means are not limited to the above-mentioned indices. For example, oxidation-reduction potential (ORP), ion concentration, dissolved oxygen, total solubility of impurities (TDS), specific resistance, It can be appropriately changed to residual chlorine or the like.

The sensor probe and the sensor main body are not connected using a lead wire, but may be connected wirelessly. Further, the recording unit may be an external recording device such as a USB or an SD card provided in the sensor body.
The control unit may be provided in a sensor probe.

  The present invention can be variously modified without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Measuring device 5 ... Radiation measuring means 6 ... Water quality measuring means 7 ... Display part

Claims (10)

A measuring device using water as an object to be measured,
Radiation measurement means for measuring the radiation dose contained in the water,
Water quality measuring means for measuring at least two or more indices relating to the physical properties of water;
The radiation measurement means and the water quality measurement means receive measurement data measured at the same timing in the same measurement area,
A display data for sequentially displaying the measurement data, the display data to which the radiation dose is measured, among the index, and outputs the display data for determining whether are more correlated with any of the index With an output unit ,
Measuring device any index features that you determine whether the are more correlated with the radiation dose of the index. A measuring device using water as an object to be measured,
Radiation measurement means for measuring the radiation dose contained in the water,
Water quality measuring means for measuring at least two or more indices relating to the physical properties of water;
The radiation measurement means and the water quality measurement means receive measurement data measured at the same timing in the same measurement area,
A display data for sequentially displaying the measurement data, the display data to which the radiation dose is measured, among the index, and outputs the display data for determining whether are more correlated with any of the index With an output unit ,
Measuring device characterized that you highlighted indicators that are more correlated with the radiation dose. The display data by receiving, measuring device according to claim 1 or 2, further comprising a display unit that displays this sequential. The radiation measurement unit and the water quality measurement unit further include a recording unit that receives measurement data measured at the same timing in the same measurement area and sequentially records the measurement data in association with time data indicating time,
The measurement device according to claim 3 , wherein the display unit further displays measurement data recorded by the recording unit in association with predetermined time data. The measuring device according to any one of claims 1 to 4 , wherein the index relating to the physical properties of water measured by the water quality measuring means includes any of turbidity, pH, and electric conductivity. The index is turbidity and pH or electrical conductivity,
When turbidity increases with an increase in the measured radiation dose, display data for judging that the radiation dose and the turbidity are correlated is output, and pH is increased with the increase in the measured radiation dose. 6. The measuring apparatus according to claim 5 , wherein when the electric conductivity increases, display data for outputting a judgment that the radiation dose is correlated with the pH or the electric conductivity is output. The display unit, temporal change in radiation dose, temporal change in turbidity, pH, conductivity, claim 3 or 4, wherein that comparably displaying the time change of ORP or ion concentration Measuring device. Further comprising an area data acquisition means for acquiring position data, weather data or water depth data in the measurement area,
In the measurement data measured by the radiation measuring means and the water quality measuring means, in the measurement area measured by the radiation measuring means and the water quality measuring means, the position data obtained by the area data obtaining means, the weather data or water depth data The measurement device according to any one of claims 1 to 7 , wherein the measurement device is linked with and recorded. A method of measuring water,
The radiation dose contained in the water and at least two or more indices relating to the physical properties of the water are sequentially measured at the same timing in the same measurement area,
A measurement method comprising: determining which of the indices is more correlated with the radiation dose based on the measured radiation dose and the index. A method for removing a radiation source, comprising identifying a state of the radiation source using the measurement method according to claim 9 .