KR101462189B1 - System for automatically detecting and monitering radiation - Google Patents

Abstract

The present invention relates to an automated radiation measurement and monitoring system. The present invention relates to a water supply system comprising a water supply part for taking water from a water source by a pump; A measuring unit for storing the water supplied by the water supply unit and measuring the concentration of radioactivity; And a controller for controlling the water supply unit and the water supply unit so that water is collected by driving the pump of the water supply unit by transmitting a signal to the water supply unit and the measurement unit and receiving and analyzing the measured radiation data of the measurement unit to determine whether or not the reference value is exceeded, A control unit for supplying or shutting off water; And a transmission / reception unit capable of transmitting / receiving data of the control unit to / from the server in a wire / wireless manner.

Description

[0001] The present invention relates to an automatic radiometric measurement and a real-time monitoring system,

More particularly, the present invention relates to an automatic radioactivity measurement and real-time monitoring system, in which radioactivity contained in a liquid sample is automatically measured and the result is transmitted to a remote server, Lt; / RTI >

Over the past 25 years since the accident in 1987 at the Chernobyl nuclear power plant in the former Soviet Union, the amount of high-risk radioactive materials generated from accident sources has been drastically reduced depending on the nature of each nuclide.

However, cesium concentration has been reported to increase continuously, and cesium, which has a fatal risk when it enters the living body, continues to cause medical and ecological harm to the environment of neighboring countries.

Moreover, some of the radioactive materials released from Fukushima Dai-ichi Nuclear Power Plant in the aftermath of the earthquake that occurred on March 11, 2011 came to the Korean peninsula with air currents. In particular, radioactive iodine (I-P1) and cesium (Cs-P7) were detected in the rain from Seoul and Chuncheon on March 28,

However, the concentration of radioactive material in the atmosphere can be measured in real time, but it is technically difficult to measure the radioactivity in the water of water sources such as drinking water plants, rivers and lakes.

Patent Application No. 10-2012-7011841 (Name: Polluted air collection system, polluted air collection apparatus and method thereof)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for measuring radioactive contamination in water of a water source such as a wastewater treatment plant, a river, a lake, And analyzing the measured values and transmitting them to the server through a wire / wireless method, thereby providing a system capable of real-time monitoring of radioactive contamination at a remote site.

To achieve the above object, according to a preferred embodiment of the present invention, there is provided a water supply system comprising: a water supply unit for collecting water from a water source by a pump;

A measuring unit for storing the water supplied by the water supply unit and measuring the concentration of radioactivity;

And a controller for controlling the water supply unit and the water supply unit so that water is collected by driving the pump of the water supply unit by transmitting a signal to the water supply unit and the measurement unit and receiving and analyzing the measured radiation data of the measurement unit to determine whether or not the reference value is exceeded, A control unit for supplying or shutting off water; And

And a transmission / reception unit capable of transmitting / receiving data of the control unit to / from the server by wire / wireless.

Further, another preferred embodiment of the present invention includes a measuring unit for measuring the radioactivity of water;

A water supply unit connecting the inlet of the measuring unit and the water source to supply the water stored in the water source to the measuring unit;

A washing water supply unit connected to an inlet side of the measuring unit and supplying washing water to the measuring unit;

Water is collected by driving a pump of the water supply unit by sending a signal to the water supply unit, the measurement unit, and the wash water supply unit, and the measured radiation data of the measurement unit is received and analyzed to determine whether or not the reference value is exceeded, A controller for selectively supplying or blocking water supplied to the measuring unit from the water supply unit and the wash water supply unit;

And a transmission / reception unit capable of transmitting / receiving data of the control unit to / from the server in a wired or wireless manner,

Wherein the water supply portion includes a first valve assembly capable of shutting off water flowing to the measurement portion,

Wherein the washing water supply portion includes a second valve assembly capable of blocking washing water flowing to the measuring portion,

The control unit selectively drives the first and second valve assemblies to shut off the first valve assembly when the data exceeds a reference value and to open the second valve assembly to allow the wash water to be supplied to the metering unit It provides automatic measurement and monitoring system of radioactivity.

The automatic radioactivity measurement and real-time monitoring system according to the embodiment of the present invention has the following advantages.

First, a certain volume of space is provided inside the measurement chamber provided with the measurement sensor, and water supplied from a water source such as a wastewater / purification plant, a river, and a lake can be stored in this space. Concentration, and transmit the measured data to the server of the remote site, it is possible to monitor the contamination state of the radioactivity in the field in real time at the remote site.

Second, radioactivity measurement is measured in 1 hour unit and transmitted to the remote site in real time, so that rapid response measures can be taken in case of radioactive contamination, so that drinking water can be safely monitored from radioactive contamination.

Third, the valve assembly is disposed in the water supply part for supplying the sample and the water supply part for supplying the washing water, and the valve assembly is selectively opened and closed by the control part so that the measurement is normally performed when the radioactivity concentration is lower than the reference value. In the case of exceeding the reference value, the contamination state of the measuring unit can be effectively removed by performing the washing by the washing water supplying unit.

Fourth, the contaminated water can be stored in the polluted water storage tank, and detailed analysis of the nuclides can be carried out through reanalysis.

Fifth, the control unit for controlling the radioactivity measurement process may be configured by a logger unit, a storage unit, an alarm unit, and a controller, and the radioactivity measurement can be efficiently performed by controlling each process for each unit.

1 is a schematic view showing a structure of an automatic radiation measurement and monitoring system according to a preferred embodiment of the present invention.
FIG. 2 is a schematic view showing the structure of the flow rate regulator shown in FIG. 1. FIG.
FIG. 3 is a diagram showing the structure of the control unit shown in FIG. 1 by modules.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an automatic radiation measurement and real time monitoring system according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the automatic radiation measurement and monitoring system 1 proposed by the present invention includes a water supply unit 5 for collecting water from a water source 3 by a pump P, Wow;

A measuring unit 7 for measuring the concentration of radioactivity of the water supplied by the water supply unit 5;

The water supply unit 5 and the measurement unit 7 are controlled to conduct water collection by the water supply unit 5, measurement of radioactivity by the measurement unit 7 and discharge of water, A control unit 9 for receiving and analyzing data to determine the degree of contamination; And

And a transmission / reception unit 10 capable of transmitting / receiving data of the control unit 9 to / from the server S in a wired or wireless manner.

In the automatic radiometric measurement and monitoring system 1 having such a structure, the water supply unit 5 collects a predetermined amount of water from a water source such as a drinking water / purification plant or a river, a lake or a dam, And then supplied to the measurement chamber 15 of the measurement unit 7, which will be described later.

More specifically, the water supply unit 5 includes a first valve assembly (V1) disposed on a pipe L connected to the water source 3 and opening / blocking the pipe L; And a pump P disposed on the pipe L for supplying a predetermined amount of water from the water of the water source 3 to the measurement unit 7 in order to obtain a sample.

The first valve assembly V1 may be a solenoid valve, although various types of valves may be used. The first valve assembly V1 may be turned on or off by a signal of the controller 9 by being connected to the controller 9. [

That is, when the sample is taken, the first valve assembly V1 is turned on by the signal of the controller 9 to open the pipe L so that the water of the water source 3 flows into the pipe L .

After the first valve assembly V1 is opened for a predetermined time, the first valve assembly V1 may be disconnected by a signal from the control unit 9. [ Therefore, the control unit 9 can appropriately adjust the amount of the sample to be sampled by controlling the on / off time of the first valve.

In addition, the first valve assembly V1 can also be shut off in the following cases. That is, when the measured radioactive concentration exceeds the reference value, the measuring chamber 15 is washed for re-measurement. At this time, the second valve assembly V2, which will be described later, is opened to supply the washing water into the measuring chamber 15 When the second valve assembly V2 is opened, the first valve assembly V1 is turned off and the pipe L can be shut off.

One side of the pump P is connected to a pipe L of the water source 3 and the other side is connected to an inlet of the measurement chamber 15. The water in the water source 3 is sucked through the pipe L by the suction force generated when the pump P is driven and then discharged and supplied to the measuring chamber 15 of the measuring unit 7. [

At this time, the pump P is connected to the control unit 9 so that the driving of the pump P can be controlled by the control signal.

The water stored in the water source 3 may be sucked by the pump P and be supplied to the measuring chamber 15 of the measuring unit 7. At this time, the opening time of the first valve assembly V1 may be adjusted The amount of the sample to be sampled is adjustable.

The water supply unit 5 may further include a filtration unit 5 to remove foreign substances contained in the sample.

That is, in the case of a water intake facility or a water treatment plant using water resources of a water quality of 1 or more, such a filtration part (5) may be unnecessary, but the water quality of a river, a reservoir and a dam may fall below 2 A filtering unit 5 may be required to remove foreign substances such as suspended solids (SS).

Such a filtration portion 19 preferably includes a filter and is disposed on the pipe L. [ Therefore, the filtration unit 5 can efficiently remove the foreign matter by filtering the sample flowing through the pipe L.

The water supply unit 5 may further include a flow rate controller 21 for controlling the flow rate of the sample flowing into the measurement chamber 15.

That is, since the amount of the sample to be supplied to the measurement chamber 15 varies depending on the topographical characteristics (elevation) of the water source 3 such as the intake / purification plant and the arrangement of the pump P or the position of the measurement chamber 15, The flow rate can be kept constant by the flow rate controller 21.

Especially, due to the nature of the nuclear power plant, seawater having a proper level can be pushed by the tsunami because it is built on the coast, and only a proper amount of seawater can be introduced by the flow controller 21.

The flow regulator 21 preferably includes a three-way valve system. 2, the flow rate regulator 21 includes an inlet 23 connected to a pipe L to which a sample is supplied; A first outlet 25 for discharging the supplied sample to the measurement chamber 15; A second outlet 27 for discharging the supplied sample to the bypass pipe L1; And an opening / closing plate 29 hingedly provided inside the flow regulator 21 for selectively opening and closing the first and second outlets 25 and 27.

The flow rate regulator 21 having the above-described structure can appropriately adjust the flow rate of the sample by varying the opening angle of the opening / closing plate 29.

The relationship between the opening and closing plate 29 and the opening angle will be described below as an example.

Opening and closing plate opening angle Measuring chamber inflow Bypass amount 90 ° 100 0 70 ° 77 23 45 ° 50 50 20 ° 23 77 0 ° 0 100

As can be seen from the above table, the amounts of the samples supplied to the measurement chamber 15 and the bypass pipe L1 through the flow controller 21 are inversely proportional to each other.

As described above, the sample can be supplied to the measuring unit 7 by being pumped by the pump P of the water supply unit 5. [

The measuring section 7 measures the radioactivity emitted from the radioactive substance present in the sample.

More specifically, the measuring unit 7 includes a measurement chamber 15 in which a sample is stored; A sample inlet 17 provided at one side of the measurement chamber 15 to supply a sample; A sample discharge port 31 provided on the other side of the measurement chamber 15 and discharging the measured sample; And a measurement sensor 33 provided inside the measurement chamber 15 for measuring the radioactive concentration in the sample.

The measurement chamber 15 has a predetermined volume therein. The sample injected through the sample inlet 17 is stored in the measurement chamber 15. A plurality of lead blocks 35 are stacked on the outer side of the measurement chamber 15 to form a radiation shielding film.

Therefore, it is possible to prevent the environmental radiation or artificial radiation that can be transmitted from the outside of the measurement chamber 15 from being transmitted to the inside of the measurement chamber 15 by being shielded by the radiation shielding film.

The sample discharge port (31) is connected to the discharge pipe (L2), so that the sample whose radiation measurement is completed can be discharged through the discharge pipe (L2). At this time, the valve assembly V4 is disposed in the discharge pipe L2 to control the flow of the discharged sample.

The measurement sensor 33 measures the concentration of radioactivity generated from a liquid sample. At this time, the concentration of radioactivity can be measured in a predetermined time unit, preferably in units of one hour, so that the degree of radioactive contamination on the spot can be quickly detected.

The measurement sensor 33 includes a sensor capable of measuring the radioactivity of various nuclides. For example, a gamma ray measurement sensor 33 is proposed. The gamma ray measuring sensor 33 refers to a scintillation counter or a semiconductor detector using an inorganic scintillating material.

Typically, the scintillation counter is composed of a scintillator that emits light when the radiation is incident, and a photomultiplier tube that converts the light emission into an electrical signal and multiplies it.

Radiation interacts with the scintillating material in the detector and photons generated by the photons are directed to the cathode to generate photoelectrons. The photoelectrons are multiplied through the diode group of the booster tube and finally collected on the anode to form charge pulses.

At this time, the scintillation counter uses NaI (TI), which is a inorganic scintillation material, and NaI (TI) is used as a standard scintillation material for gamma ray spectroscopy because of its high light yield and almost linear response to electrons and gamma rays.

Of course, inorganic scintillating materials as well as inorganic scintillating materials can be used.

The radioactive concentration measured by the measurement sensor 33 may be transmitted to the controller 9 for classification, analysis, storage, alarm generation, remote data transmission, and the like.

More specifically, the control unit 9 includes a logger unit 39 for classifying and analyzing the radiation concentration data transmitted from the measurement sensor 33 into nuclear species;

A storage unit (41) for storing data processed by the logger unit (39);

An alarm unit 45 for generating an alarm when the radioactive concentration exceeds a reference value;

A PLC (programmable logic controller) 47 for controlling the system by transmitting and receiving signals with the units, determining whether the data exceeds a reference value, and instructing the storage of data.

In the control unit 9 having such a structure, the logger unit 39 performs a self-test mode in an initial state to check whether there is a normal operation, and switches to a measurement mode in which data can be processed if there is no abnormality.

In this measurement mode, the logger unit 39 classifies / analyzes the radiation data measured by the measurement sensor 33 into nuclear species.

For example, the logger unit 39 classifies and classifies the radioactive data into iodine data and cesium data.

At this time, the iodine and cesium data may be converted as needed. For example, it can be converted from CPM to KBq / m ³ .

After the iodine and cesium data are classified, the radioactivity and the radioactivity of the iodine and cesium data are respectively analyzed.

Further, the logger unit 39 measures the environmental data around the measurement chamber 15 and sets the radiation baseline value (Background limit). At this time, it is preferable that the measurement of the radioactive basis value is made for iodine and cesium.

The data analysis result is transmitted to the controller 47. The controller 47 provides the data to the storage unit 41 and stores the data and determines whether the reference value is exceeded by the judgment program of the controller 47 itself.

More specifically, the storage unit 41 stores the data provided by the logger unit 39 by time or by day. At this time, the data storage format can be various formats, but is preferably stored in a text file format.

The storage of such data is preferably stored at the same cycle as the data measurement period of the logger unit.

The controller (aka server PC) 47 computes data provided from the logger unit 39 to determine whether the radioactivity concentration of each nuclide exceeds the allowable reference value.

More specifically, the controller 47 determines whether or not the reference value is exceeded by calculating the nuclear species data provided from the logger unit 39 by a preset contamination degree determination program.

At this time, each nuclear species reference value is inputted in advance, and one example is shown by the following table.

The controller 47 compares the actual radiation concentration data of the measurement chamber 15 received from the logger unit 39 with a reference value set for each type of radioactive nucleus as shown in the above table.

As a result of the comparison, if it is determined that the actual radioactivity concentration data exceeds the reference value, the controller 47 transmits a signal to the alarm unit 45. [

The alarm unit 45 generates an alarm when a signal indicating that the reference value is exceeded is received. At this time, the alarm may be generated in various forms, such as an alarm sound through a speaker, a light emission through a warning light, and a warning message output on a monitor.

The administrator can recognize that the radioactivity concentration of the sample has exceeded the standard value by such an alarm.

On the other hand, when the radioactivity concentration exceeds the reference value, it means that the measurement chamber 15 is contaminated. Therefore, it is necessary to discharge the contaminated water to the contaminated water storage tank 60 and clean the measurement chamber 15 again.

Therefore, the signal is transmitted to the first valve assembly (V1) to be closed, thereby preventing the sample from being additionally supplied to the measurement chamber (15).

The controller 47 sends a signal to the wash water supply unit 50 to supply the wash water to the measurement chamber 15 to allow the contaminated radioactive material to flow out of the measurement chamber 15. At this time, the outflowed polluted water can be stored in the polluted water storage tank (60).

The washing water supply unit 50 includes a washing water storage tank 52 connected to the inlet of the measuring unit 7 to store washing water; A pump P for supplying wash water stored in the wash water storage tank 52 to the measurement unit 7; And a second valve assembly (V2) disposed between the wash water storage tank (52) and the metering section (7) to control the flow of wash water.

Therefore, washing water is pumped and supplied to the measuring chamber 15, and the washing process can be repeated to efficiently clean the inside of the measuring chamber 15.

After the contaminated sample is discharged from the measurement chamber 15, the controller 47 closes the fourth valve assembly V4 and sends a signal to the third valve assembly V3 of the contaminated water storage portion 60 The pipe L3 connected to the contaminated water storage tank 62 can be opened.

Therefore, the sample flowing out of the measurement chamber 15 can be safely stored in the contaminated water storage tank 62. A detailed analysis of the radionuclides can then be performed by reanalyzing the contaminated water stored in the contaminated water storage tank.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an operation of an automatic radiation measurement and real-time monitoring system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, in the case of measuring the radioactivity concentration in water, the controller 47 of the control unit 9 first transmits a signal to the pump P and the first valve assembly V1, The pipe L connected to the pipe 3 is opened. A predetermined amount of sample is collected from the water source 3 by the pump P and is supplied to the measurement chamber 15 through the pipe L. [

At this time, foreign substances contained in the sample may be filtered during the passage of the sample through the filtration unit 5. Therefore, foreign substances can be prevented from flowing into the measurement chamber 15 and stacked.

In addition, the sample can be injected into the measurement chamber 15 with the flow rate kept constant by passing through the flow rate controller 21 before being injected into the measurement chamber 15.

Then, when the sample is stored in the measurement chamber 15 and reaches a certain water level, the controller 47 sends a signal to the measurement sensor 33 to measure the radioactive concentration of the sample.

At this time, the measurement sensor 33 can measure the radioactive concentration of various nuclides contained in the sample, and preferably, the concentration of iodine and cesium is measured.

The iodine and cesium concentrations of the thus measured sample are transferred to the logger unit 39 for analysis.

That is, the logger unit 39 switches to the measurement mode and classifies / analyzes the radiation data measured by the measurement sensor 33 into the nuclear type.

For example, the logger unit 39 classifies and classifies the radioactive data into iodine data and cesium data.

At this time, the iodine and cesium data may be converted as needed. For example, it can be converted from CPM to KBq / m ³ .

After the iodine and cesium data are classified, the radioactivity and the radioactivity of the iodine and cesium data are respectively analyzed.

Further, the logger unit 39 measures the environmental data around the measurement chamber 15 and sets the radiation baseline value (Background limit). At this time, it is preferable that the measurement of the radioactive basis value is made for iodine and cesium.

The data analysis result is transmitted to the controller 47. The controller 47 provides data to the storage unit 41 to store the data and determines whether the reference value is exceeded in the controller 47 itself.

That is, the storage unit 41 stores the data provided by the logger unit 39 by time or by day. At this time, the data storage format can be various formats, but is preferably stored in a text file format.

On the other hand, the controller 47 compares the reference value set for each type of radioactive nucleus with the actual radioactivity concentration data of the measurement chamber 15 received from the logger unit 39 with each other.

As a result of the comparison, if it is determined that the actual radioactivity concentration data exceeds the reference value, the controller 47 transmits a signal to the alarm unit 45. [

The alarm unit 45 generates an alarm when a signal indicating that the reference value is exceeded is received. At this time, the alarm may be generated in various forms, such as an alarm sound through a speaker, a light emission through a warning light, and a warning message output on a monitor.

The administrator can recognize that the radioactivity concentration of the sample has exceeded the standard value by such an alarm.

The data of the storage unit 41 and the controller 47 can be transmitted to the server S at the remote place by the transmission / reception unit 10 in a wire / wireless manner.

Therefore, it is possible to monitor the state of the site in real time by receiving radioactivity data in wired / wireless manner not only at the measurement site of radioactivity concentration but also at the remote site.

On the other hand, when the radioactivity concentration exceeds the reference value, it means that the measurement chamber 15 is contaminated, and therefore it is necessary to clean the measurement chamber 15 again.

Thus, the controller 47 blocks the addition of the sample to the metering chamber 15 by sending a signal to the first valve assembly V1 to close it.

In addition, the controller 47 sends a signal to the second valve assembly V2 to open water to supply the wash water to the metering chamber 15 to drain the contaminated radioactive material from the metering chamber 15.

By repeating this cleaning process, the inside of the measurement chamber 15 can be cleaned.

The controller 47 then closes the fourth valve assembly V4 and sends a signal to the third valve assembly V3 so that the contaminated water storage tank 62 is closed, The pipe L3 connected to the pipe line L3 can be opened.

Therefore, the sample flowing out of the measurement chamber 15 is supplied to the contaminated water storage tank 60 and stored. A detailed analysis of the nuclides can be performed by reanalyzing the contaminated water stored in the contaminated water storage tank.

As described above, a predetermined amount of sample is collected from the water source 3 and supplied to the measurement chamber 15, the radioactive concentration in the sample is measured by the measurement sensor 33, and the control unit 9 analyzes the data It is determined whether or not the reference value is exceeded and processed.

In addition, since the radiation data is transmitted to the remote server S in a wired / wireless manner, it is possible to monitor the situation of the field in real time from the outside.

1: Automatic measurement and monitoring system of radiation
5:
7:
9:
V1, V2, V3: First to third valve assemblies

Claims (10)

A water supply part for taking water from a water source by a pump;
A measuring unit for storing the water supplied by the water supply unit and measuring the concentration of radioactivity;
And a controller for controlling the water supply unit and the water supply unit so that water is collected by driving the pump of the water supply unit by transmitting a signal to the water supply unit and the measurement unit and receiving and analyzing the measured radiation data of the measurement unit to determine whether or not the reference value is exceeded, A control unit for supplying or shutting off water; And
And a transmission / reception unit capable of transmitting / receiving data of the control unit to / from the server in a wire / wireless manner,
The water supply unit includes a filter disposed on the pipe to filter foreign substances contained in the water; And a flow controller capable of controlling a flow rate of water flowing into the measuring unit,
The flow rate regulator includes an inlet connected to a pipe through which the sample is supplied; A first outlet for discharging the supplied sample to the measurement chamber, a second outlet for discharging the supplied sample to the bypass conduit, and a second outlet which is hingably provided inside the flow controller to selectively open and close the first and second outlets Comprising an opening / closing plate,
The measurement unit includes a measurement chamber in which water is stored, a sample injection port provided at one side of the measurement chamber for supplying water, a sample discharge port provided at the other side of the measurement chamber for discharging the measured sample, And a measurement sensor for measuring the radioactivity concentration and transmitting the measured radioactivity concentration to the control unit. A measuring unit measuring the radioactivity of water;
A water supply unit connecting the inlet side of the metering unit and the water source to each other through a pipe to supply water stored in the water source to the metering unit;
A washing water supply unit connected to an inlet side of the measuring unit and supplying washing water to the measuring unit;
Water is collected by driving a pump of the water supply unit by sending a signal to the water supply unit, the measurement unit, and the wash water supply unit, and the measured radiation data of the measurement unit is received and analyzed to determine whether or not the reference value is exceeded, A controller for selectively supplying or blocking water supplied to the measuring unit from the water supply unit and the wash water supply unit;
And a transmission / reception unit capable of transmitting / receiving data of the control unit to / from the server,
Wherein the water supply portion includes a first valve assembly capable of shutting off water flowing to the measurement portion,
Wherein the washing water supply portion includes a second valve assembly capable of blocking washing water flowing to the measuring portion,
The water supply unit includes a filter disposed on the pipe to filter foreign substances contained in the water; And a flow controller capable of controlling a flow rate of water flowing into the measuring unit,
The flow rate regulator includes a suction port connected to the piping to which the sample is supplied, a first discharge port for discharging the supplied sample to the measurement chamber, a second discharge port for discharging the supplied sample to the bypass pipeline, Closing plate for selectively opening and closing the first and second outlets,
The measurement unit includes a measurement chamber in which water is stored, a sample injection port provided at one side of the measurement chamber to supply water, a sample discharge port provided at the other side of the measurement chamber to discharge the measured sample, And a measuring sensor for measuring the radioactive concentration and transmitting the measured radioactive concentration to the control unit,
The control unit selectively drives the first and second valve assemblies to shut off the first valve assembly when the data exceeds a reference value and to open the second valve assembly so that the wash water is supplied to the metering unit to allow the cleaning to proceed Radioactive measurement and monitoring system. The method according to claim 1,
The water supply unit includes a first valve assembly, which is a solenoid valve disposed on a pipe connected to the water source and opens / blocks the pipe; And a pump disposed on the piping for pumping water from the water source and supplying the pumped water to the metering unit. The method according to claim 1,
A washing water supply unit is additionally connected to one side of the measuring unit,
The washing water supply unit includes a washing water storage tank connected to an inlet of the measuring unit to store wash water;
A pump for supplying wash water stored in the wash water storage tank to the measurement unit; And
And a second valve assembly disposed between the wash water storage tank and the metering section to control the flow of wash water. 3. The method of claim 2,
Wherein the water supply unit is disposed on the piping and includes a pump for pumping water from the water source and supplying the pumped water to the measurement unit. delete delete The method according to claim 1,
Wherein the measurement sensor is a scintillation counter capable of detecting iodine and cesium, or a semiconductor detector. 3. The method according to claim 1 or 2,
A polluted water storage tank disposed on the exit side of the metering unit and storing the water discharged after measuring the radioactivity of the metering unit;
And a third valve assembly disposed in the piping between the contaminated water storage tank and the metering unit for controlling the flow of the contaminated water according to the signal of the control unit. 10. The method of claim 9,
The control unit includes a logger unit for classifying / analyzing the radiation concentration data transmitted from the measuring unit by a nuclear type by a radioactivity analysis program;
A storage unit for storing data processed by the logger unit;
An alarm unit for generating an alarm when the radioactivity concentration exceeds a reference value; And
And a controller for controlling the system by transmitting and receiving signals with the units, determining whether the data exceeds a reference value by a pollution degree determination program, and instructing storage of data.

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