RU2755586C1 - Remote radiation monitoring system - Google Patents

Abstract

FIELD: multifunction remote monitoring systems.

SUBSTANCE: invention relates to multifunctional means of remote monitoring of the radiation state of an object. The presence in the radiation monitoring system at a nuclear power plant with a water coolant of the first circuit of channels for continuous monitoring of the activity of air media in the premises of the controlled zone, ventilation systems of nuclear power plants and spectrometric channels for periodic monitoring of the activity of radionuclides of gases as air media in the premises of the controlled zone, ventilation systems of nuclear power plants, as well as the primary circuit coolant removed from the sample in the degasser and the channels for monitoring the activity of radionuclides in the primary circuit coolant after the gases are removed from it, it provides the possibility of conducting both radiation monitoring of air in the premises of the controlled zone and ventilation systems, and diagnostics of the condition of fuel element shells with the identification of the moment of the beginning of the appearance of shell defects with the necessary degree of reliability.

EFFECT: extension of the range of radiation monitoring equipment.

1 cl, 2 dwg

Description

The invention relates to systems for remote radiation monitoring at nuclear power plants (NPP) with a water coolant.

Known system for remote radiation monitoring, the main function of which is remote radiation monitoring of gas environments [patent RU No. 2182343, publ. 05/10/2002]. This system contains detection units with actuators for delivery of controlled environments, installed in rooms with controlled environments, computer modems with junction boxes, installed at a distance of up to 25 meters from detection units and actuators, including controllers on single-chip computers, power supplies for detection units and actuators with control circuits for switching on, devices for converting signals from detectors and devices for input-output of information via a mono-channel, one for each detection unit, a unit for primary processing and analysis of information, which controls the actuators of detection units, as well as collection, primary analysis and processing information from modems-calculators about the radiation situation at the controlled object, operator's console with a personal computer and information display devices, autonomous power supplies, protective devices against the influence of impulse noise. The control of the actuators is carried out via a control channel, which provides a connection between the primary processing and analysis unit of information with the computer modems through distribution boxes, and the collection of information from the computer modems is carried out via a mono-channel information channel with one common communication line, which provides a connection between the primary processing and information analysis unit with computer modems through junction boxes.

The disadvantages of this system when it is used for remote radiation monitoring are the complexity of organizing periodic monitoring, the possibility of errors in the measurement results due to the lack of means for monitoring the parameters of controlled environments. The complexity of organizing periodic monitoring is due to the fact that for measuring each parameter there is a separate actuator that ensures the delivery of the controlled environment, and for each of the monitored parameters, including periodically controlled ones, a detection unit is provided that ensures the delivery of the controlled environment, a computer modem that includes controller on single-chip computers, a power supply for the detecting unit, a detector signal conversion device, an input-output device for information via a mono-channel, and a junction box. The possibility of errors in the measurement results when the conditions for the delivery of controlled media to the detection units change is due to the fact that the analysis of measurement results does not take into account information on the conditions for the delivery of the controlled environment, which confirms the passage of controlled media through the detection units at specified rates under normal delivery conditions or does not confirm - subject to changed delivery conditions. Under changed conditions for the delivery of controlled media to the detection units, the measurement results will be erroneous due to the uncertainty of the flow of controlled media through the detection units.

The disadvantages of this system are also the inability to diagnose the state of the main NPP equipment, for example, the state of the cladding of fuel elements (fuel elements) with nuclear fuel, by monitoring the radionuclide composition of the monitored radioactive media, due to the lack of channels for spectrometric monitoring of radionuclide activity in the coolant of the 1st contour.

There is also known a device for automatic measurement of the activity of radionuclides in the water coolant of the primary circuit of a nuclear power plant [patent RU No. 2289827, publ. 20.12.2006], containing N measuring chambers, the volumes of which are inversely proportional to the N average levels of activity of the monitored medium, 2 N valves with remote control for supplying the monitored and flushing media to the measuring chambers and draining the monitored and flushing media from the measuring chambers, a valve control unit, in series connected ionizing radiation detector, spectrometric amplifier, programmable multichannel pulse analyzer with a detector power supply, a processing unit and an ionizing radiation intensity meter, a degasser, valves with remotely controlled electric drives for supplying controlled and flushing media to the degasser according to the number of monitored and flushing media, a protection unit for an ionizing radiation detector with collimators according to the number of measuring chambers and a calibration source of ionizing radiation, an electric drive with a remote control of the protection unit, a control unit for electric drives, a signaling device for filling the degasser and with detectors of filling the measuring chambers. The degasser and measuring chambers are equipped with outlets for overfill protection. The processing unit of the programmable multichannel analyzer, the valve control unit and the electric drive control unit include serial I / O ports through which they are connected to each other. The outputs of the signaling devices for the filling of the degasser and measuring chambers and the signal outputs of the electric drives are connected to the inputs of the electric drive control unit, the outputs of which are connected to the control inputs of the electric drives of the protection unit and shut-off valves for feeding controlled and flushing media into the degasser, the serial input-output port of the processing unit of the programmable multichannel analyzer is also connected with the serial I / O port of the remote computer.

The main function of this device is to control the tightness of the cladding of fuel elements, which are one of the main protective barriers at nuclear power plants. The control of the tightness of the cladding of the fuel elements is carried out according to the activity of the fission products of nuclear fuel dissolved in the water coolant of the primary circuit of the NPP, which enter the coolant of the primary circuit when the tightness of the cladding of the fuel elements is broken.

The disadvantage of this device is that it cannot be used to determine the violation of the tightness of the cladding of the fuel elements at the initial stage, when only gaseous leaks appear in the cladding of the fuel elements, through which only gaseous fission products of nuclear fuel go beyond the cladding of the fuel elements and enter the coolant of the primary circuit. This is due to the presence of a degasser in it, with the help of which gas is removed from the samples of the primary coolant before measurements are taken.

Also known is a system for remote radiation monitoring of air, mainly in the rooms of the controlled area and ventilation systems of nuclear power plants [patent RU No. 2296351, publ. 27.03.2007], which consists of an operator's console with an autonomous uninterruptible power supply unit, a personal computer and information display facilities and two monitoring and control subsystems. The first monitoring and control subsystem contains supply pipelines of continuously monitored air media, into which, to remove moisture and supply controlled media through the measuring chambers of the detecting units at a given flow rate, manually operated shut-off and control valves, filters and flow meters, output pipelines of the detecting units with shut-off valves are included with manual control are united by a common pipeline, distribution boxes, controllers-calculators, including a microcomputer, power supplies for detecting units, devices for converting the detector signal and input-output devices for information via an information channel, one for each detector unit, the first and second blowers, the first and second shut-off valves for gas blowers with an electric drive, a vacuum sensor at the inlet of gas blowers, a gas blower control unit and a gas blower switching unit, consisting of the first and second devices for switching on electric drives, the first block of collection, primary processing and a information analysis with an autonomous uninterruptible power supply unit, which provides through the information channel the collection, primary analysis and processing of information on the activity of continuously monitored media, and through the control channel - control of gas blowers, shut-off valves with electric drives, collection of information on the state of gas blowers, shut-off valves with electric drives and on the value rarefaction created by gas blowers. The second monitoring and control subsystem contains supply pipelines with remotely controlled shutoff valves according to the number of periodically monitored media, combined at the outlet of remotely controlled shutoff valves, for supplying controlled air media with a given flow rate and removing moisture through a manually controlled shutoff and control valve, a filter and a flow meter through the measuring chamber of the common detection unit and through the output pipeline of the detection unit with a manually operated shut-off valve to the common pipeline of the detection units, a junction box, a controller-calculator with a junction box, including: a microcomputer, a power supply for the common detection unit, a detector signal conversion device, and an input-output device for information via an information channel, a valve control unit with a junction box, a second unit for collecting, primary processing and analyzing information with an autonomous uninterruptible power supply unit. The personal computer of the operator's console, the first and second blocks for collecting, primary processing and analysis of information are included in the local computer network. The outputs of the detecting units are connected to the inputs of the controllers-calculators, and the power supply circuits of the detecting units are connected to the outputs of the power supplies of the corresponding controllers-calculators. The first block for collecting, primary processing and analysis of information is connected via an information channel to the controllers-calculators of the first subsystem through their junction boxes, and via a control channel is connected to the gas blower control unit through its junction box. The second block for collecting, primary processing and analysis of information is connected via an information channel with a computer controller of the second subsystem through its junction box, and via a control channel with a valve control unit through its junction box. The gas blower control unit, the first and second electric drive switching devices provide control of the gas blowers and shut-off valves with electric drives of the gas blowers. The gas blower control unit also provides: power supply of the vacuum sensor, converting the output signal of the vacuum sensor into the value of the measured vacuum, storing the specified minimum operating vacuum value created by the designated main blower, comparing the measured and specified minimum operating vacuum values of the gas blowers. Outlets of the first and second gas blowers are combined to remove controlled air media pumped through them. The outputs of the electric drives of the first and second gas blower shut-off valves are connected to the inputs of the first and second devices for switching on the electric drives of the gas blowers, respectively, and their control circuits and control circuits of the first and second gas blowers are connected to the outputs of the first and second devices for switching on the electric drives, respectively. The outputs of the gas blower control unit are connected to the inputs of the first and second electric drive switching devices, and the inputs of the gas blower control unit are connected to the outputs of the first and second electric drive switching devices. The information output of the vacuum sensor is connected to the input of the gas blower control unit, and the output of the power supply of the gas blower control unit is connected to the supply input of the vacuum sensor.

This system is the closest in essence to the claimed system and is chosen as a prototype.

The disadvantage of the prototype is the lack of information content about the state of the fuel elements due to the lack of channels for spectrometric monitoring of radionuclide activity in the liquid and gas fractions of the primary coolant at NPPs with a water coolant, for example, with VVER-type reactors.

The technical problem facing the authors of the proposed technical solution was the creation of a multifunctional system for remote radiation monitoring for NPPs with VVER reactors, which performs both the functions of radiation monitoring of air in the rooms of the controlled area and in ventilation systems, and the function of diagnosing the state of the cladding of fuel elements.

The technical result of the invention is to provide, together with radiation monitoring of air in the rooms of the controlled area and in ventilation systems, diagnostics of the condition of the cladding of fuel elements, which are one of the main protective barriers at nuclear power plants, which makes it possible to detect the appearance of cladding defects at the initial stage by ensuring control of the content of radionuclides as in liquid, and in the gas fractions of the primary coolant.

To solve the problem and achieve the specified technical result, the claimed remote radiation monitoring system, as well as the known one, contains an operator panel with an autonomous uninterruptible power supply unit, a personal computer with information display facilities and two monitoring and control subsystems, the first subsystem contains: supply pipelines continuously monitored air media with filters for moisture removal, with manually operated shut-off and control valves and flow meters for supplying controlled air through the measuring chambers of the detecting units with predetermined flow rates, output pipelines of the detecting units with manually controlled shut-off valves, connected at the outlet by a common pipeline of the detecting units supplying pipelines of the first periodically monitored media with remotely controlled shut-off valves combined at the outlet to supply the monitored media to the measuring chamber of the common detection unit control with a given flow rate through a series-connected shut-off and control valve with manual control, a flow meter and a filter for removing moisture, the outlet pipeline of which is also connected through a shut-off valve with manual control to a common pipeline of detecting units, junction boxes, controllers-calculators, including a microcomputer, sources power supply of the detecting units, the device for converting the signal of the detector and the information input-output device through the information channel, one for each detector unit, the first and second gas blowers, the first and second gas blowers shut-off valves with electric drives, a vacuum sensor at the inlet of the gas blowers, the gas blower control unit, the first and the second device for switching on electric drives of gas blowers and stop valves for gas blowers with electric drives, a control unit for the valves of the first periodically controlled media, the first block for collecting, primary processing and analysis of information with an autonomous uninterruptible power supply unit, providing through the first information channel, collection, primary analysis and processing of information on the activity of continuously monitored air media and the first periodically controlled air media, and through the first control channel - control of remotely controlled shut-off valves according to the number of the first periodically controlled air media, gas blowers, gas blowers shut-off valves with electric drives and the collection of information on the state of remotely controlled shut-off valves of the first periodically controlled air media, gas blowers, gas blowers with electric drives and on the magnitude of the vacuum created by the gas blowers, the second block for collecting, primary processing and analysis of information with an autonomous uninterruptible power supply unit, providing the second information collection, primary analysis and processing of information on the activity of samples of periodically monitored air periodically air environments. The personal computer of the operator's console, the first and second blocks for collecting, primary processing and analysis of information are included in the local computer network. The detecting units are connected to power supplies and information inputs of the corresponding controllers-calculators. The first block for collecting, primary processing and analysis of information is connected through the first information channel with the controllers-calculators of the first subsystem through their junction boxes, and through the first control channel it is connected to the valve control unit of the first periodically controlled air media and to the gas blower control unit through their distribution boxes. The second block for collecting, primary processing and analysis of information is connected via the second information channel with the controllers-calculators of the second subsystem through their distribution boxes. A vacuum sensor and the inputs of the first and second gas blowers are connected to the common pipeline of the detecting units through the first and second shut-off valves with electric drives, respectively. Outlets of the first and second gas blowers are combined to remove controlled air media pumped through them into special ventilation. The outputs of the first and second shutoff valves with electric drives of gas blowers are connected to the inputs of the first and second devices for switching on electric drives, respectively, and their control circuits and control circuits of the first and second gas blowers are connected to the control outputs of the first and second devices for switching on electric drives, respectively. The outputs of the gas blower control unit are connected to the inputs of the first and second electric drive switching devices, and the inputs of the gas blower control unit are connected to the outputs of the first and second electric drive switching devices. The information output of the vacuum sensor is connected to the input of the gas blower control unit, and the output of the power supply of the gas blower control unit is connected to the supply input of the vacuum sensor. The control circuits of the remotely controlled shutoff valves of the supply pipelines of the first periodically controlled air media are connected to the outputs of the valve control unit of the first periodically controlled air media, and the outputs of the remote controlled shutoff valves of the first periodically controlled air media are connected to the inputs of the valve control unit of the first periodically controlled media. According to the claimed technical solution, the second subsystem includes a spectrometric channel for measuring the activity of radionuclides in the first circuit coolant, a spectrometric channel for measuring the activity of radionuclides of the second periodically monitored air media, pipelines for supplying the first circuit coolant from m points of the process circuit to spectrometric control with shut-off valves with electric drives and with throttle valves to reduce pressure, united by a common pipeline, in which a safety valve is included, the outlet of which, to reduce the temperature of the primary coolant to a predetermined value, passes through a heat exchanger, a flushing water supply pipeline with an electrically driven shut-off valve at the inlet, which is connected to the outlet of the common supply pipeline coolant of the first circuit for spectrometric control, in which a manually controlled shut-off valve is installed, pipelines of the second periodically controlled air x media with remotely controlled shut-off valves, united at the entrance of the spectrometric channel for measuring the activity of radionuclides by a common pipeline, into which, in order to remove moisture and supply to the input of the spectrometric channel for measuring the activity of radionuclides, the periodic monitoring of air control, filter, flow meter, output pipeline of the spectrometric channel of periodic control, which is connected through a manually operated shut-off valve to the common pipeline of the detecting units. The spectrometric channel for measuring the activity of radionuclides in the primary coolant contains a degasser with a fill level indicator, a spectrometric detection unit including a spectrometric detector, two measuring chambers for expanding the measurement range, the volumes of which are inversely proportional to the two average levels of measured radionuclide activity and a protection unit for measuring chambers with a calibration radiation source , two collimators of measuring chambers and an electric drive, a computer controller with a junction box, including a microcomputer, a power supply for a spectrometric detector, a detector signal conversion device with functions of a spectrometer, a multichannel pulse analyzer and an ionizing radiation intensity meter, and two input-output devices for information via an information channel, a block control of electric drives with a block for switching on electric drives of shut-off valves and a protection block, remotely controlled valves for measuring amer and the first control unit for the valves of the measuring chambers. The spectrometric channel for monitoring the second periodically monitored air environments contains: a general spectrometric detection unit, including a spectrometric detector, three measuring chambers for expanding the measurement range, the volumes of which are inversely proportional to three average levels of measured activity of periodically monitored air environments, a protection unit for measuring chambers and six remotely controlled valves for supplying controlled air media and purge air through three measuring chambers, a second control unit for the valves of the measuring chambers, a computer controller, including: a microcomputer, a power supply for a spectrometric detector, a detector signal conversion device with the functions of a spectrometer and a multichannel pulse analyzer and two input devices information output via the information channel. Each measuring chamber of the spectrometric channel for measuring the activity of the primary coolant is equipped with a fill level indicator and is connected to three remotely controlled shut-off valves, the first of which provides the supply of the controlled medium and flushing water from the degasser to the measuring chamber, the second ensures the discharge of the controlled medium from the measuring chamber into the collection tank controlled leaks, and the third ensures the drainage of the flushing water from the measuring chamber into the special sewerage system. The valves of the measuring chambers of the spectrometric unit for detecting the primary coolant are controlled by the first control unit for the valves of the measuring chambers. The protection unit of the spectrometric detector of the primary coolant contains: collimators according to the number of measuring chambers, a calibration source of ionizing radiation and an electric drive with remote control for moving the protection unit. The degasser and measuring chambers of the spectrometric channel for monitoring the primary coolant are equipped with outlets for overfill protection. The degasser is also equipped with an outlet for removing gases, which is connected through the first additional remotely controlled shutoff valve to the pipeline for supplying second periodically monitored air media to the common spectrometric detection unit, and through the second additional remotely controlled shutoff valve is connected to the common pipeline of the detection units for supplying gaseous media from degasser into special ventilation. The outputs of the measuring chambers of the common spectrometric detection unit of the second periodically monitored air media are connected by a common pipeline and through a manually controlled shut-off valve are connected to the common pipeline of the detecting units, and their inputs are connected to the supply pipeline of the second periodically monitored air media and to the purge air supply pipeline through remotely controlled valves of measuring chambers. The outputs of the control unit for supply valves to the common spectrometric detector of the second periodically monitored air media are connected to the inputs of remotely controlled shutoff valves of the second periodically controlled air media and to the inputs of additional pipeline valves for removing gases from the degasser, and the inputs of this valve control unit are connected to the outputs of these remotely controlled shut-off valves. The controller-calculator of the spectrometric channel for measuring the activity of radionuclides of the coolant of the first circuit and the controller-calculator of the spectrometric channel for measuring the activity of radionuclides of the second periodically monitored air media are connected through the first devices of serial input-output of information and their connecting boxes with the device of serial input-output of information of the second block for collecting primary processing and analysis of information by the second information channel, and the valve control unit of the second periodically controlled air environments is connected by means of its device for serial input-output of information through its connection box with the second unit for collecting primary processing and analysis of information by the second control channel. The controller-calculator of the spectrometric channel for measuring the activity of radionuclides in the primary coolant with the help of the second device for sequential input-output of information is connected to the first control unit for the valves of the measuring chambers of the activity of radionuclides in the coolant of the primary circuit and the control unit of electric drives through their devices of serial input-output of information by the third information control channel. The controller-calculator of the spectrometric channel for measuring the activity of radionuclides of the second periodically monitored air environments with the help of the second device of serial input-output of information is connected to the second control unit of the valves of the measuring chambers through its device of sequential input-output of information by the fourth information control channel. Outputs of signaling devices of the filling level of the degasser and measuring chambers and outputs of valves with electric drives for supplying samples of the primary coolant and flushing water to the degasser and the electric drive of the protection unit are connected to the inputs of the block for switching on the electric drives. The outputs of the block for switching on electric drives are connected to the inputs of the control unit for electric drives, the outputs of which are connected to the inputs of the block for switching on electric drives. The control outputs of the block for switching on the electric drives are connected to the control circuits of the electric drives of the protection block and shut-off valves for feeding the sample of the primary circuit coolant and flushing water to the degasser. The inputs of the remotely controlled shut-off valves of the measuring chambers for supplying and draining the coolant of the first circuit and flushing water from the measuring chambers from the measuring chambers are connected to the outputs of the second control unit for the valves of the measuring chambers, and their outputs are connected to the inputs of the second control unit for the valves of the measuring chambers. The power input of the spectrometric detection unit of the channel for measuring the activity of radionuclides in the primary coolant is connected to the output of the power supply of the controller-calculator of the spectrometric channel for monitoring the primary coolant, and the information output of the detecting unit is connected to the input of the signal conversion device of the detector of the controller-calculator of the spectrometric channel for monitoring the primary coolant, which is performs the functions of a multichannel pulse analyzer, spectrometer and ionizing radiation intensity meter. Monitoring the radionuclide composition of gases dissolved in the primary coolant is carried out by extracting gases from the degasser when pouring the primary coolant through the deaerator into the leak collection tank and directing them for spectrometric control through the measuring chambers of the spectrometric channel for measuring the activity of radionuclides of the second periodically monitored air media.

FIG. 1 shows a functional pneumohydraulic system diagram,

in fig. 2 shows a functional electrical diagram of the system.

The system contains: supply pipelines: 1 ₁ - 1 _n to the measuring chambers of the detecting units of continuously monitored air media, the supply pipeline 1 _{n + 1} to the measuring chamber of the detecting unit of the first periodically monitored air media, a common pipeline 1 _{n + 2 for} removing air media from the measuring chambers detecting units, supply pipeline 1 _{n + 3} for supplying second periodically monitored air media to the measuring chambers of the spectrometric detection unit, pipeline 1 _{n + 4} for supplying purge air to the measuring chambers of the spectrometric unit for detecting second periodically monitored air media, pipeline 1 _{n + 5} for supplying gas fractions samples of the primary coolant into pipeline 1 _{n + 2} , supply pipelines 2 ₁ - 2 _{k of the} first periodically controlled air media, supply pipelines 2 _{k + 1} - 2 _{k + P + 1 of the} second periodically controlled air media, shut-off and control valves 3 ₁ - 3 _{n + 4} with manual control at the outlet of pipelines 1 ₁ -l _{n + 1} , 1 _{n + 3} , 1 _{n + 4} , 1 _{n + 5} , remotely controlled shut-off valves 4 ₁ - 4 _k at the inlet of the supply pipeline 1 _{n + 1 of the} first periodically controlled air media, additional remote-controlled shut-off valves 4 _{k + 1} at the pipeline inlet 1 _{n + 5} and 4 _{k + 2} at the pipeline inlet 1 _{n + 3} , remote-controlled shut-off valves 4 _{k + 3} - 4 _{k + p + 3} at the inlet of the supply pipeline 1 _{n +3} second periodically monitored air media, filters 5 ₁ - 5 _{n + 4} , flow meters 6 ₁ - 6 _{n + 3} , detection units with measuring chambers 7 ₁ - 7 _n channels for continuous monitoring of the activity of beta-active and gamma-active air media, the measurement chambers of which are continuously supplied with controlled air, a detection unit with a measurement chamber 7 _{n + 1 of the} first periodically controlled air media, into the measurement chamber of which controlled air media are periodically supplied, a spectrometric detection unit 7 _{n + 2} ka a monitoring station for measuring the activity of radionuclides, the measuring chambers of which periodically receive samples of the coolant of the first circuit from m points of the technological chain, a spectrometric detection unit 7 _{n + 3} channels for measuring the activity of radionuclides of the second periodically monitored air media, into the measuring chambers of which the second periodically monitored air media periodically enter, shut-off valves 8 ₁ - 8 _{n + 3} with manual control, through which the output pipelines of the measuring chambers of the detecting units 7 ₁ -7 _{n + 1} , 7 _{n + 3} for air monitoring and pipeline 1 _{n + 5 are} connected to a common pipeline 1 _{n + 2} removing air from the measuring chambers of the detecting units 7 ₁ -7 _{n + 1} , 7 _{n + 3} , the first and second gas blowers 9 ₁ , 9 ₂ , the first and second shut-off valves with an electric drive 10 ₁ , 10 ₂ gas blowers 9 ₁ , 9 ₂ , vacuum sensor 11 for monitoring the vacuum created by gas blowers 9 ₁ , 9 ₂ in a common pipeline 1 _{n + 2} removal of air media from the measuring x chambers of detecting units 7 ₁ -7 _{n + 1} , 7 _{n + 3} , pipelines 12 ₁ - 12 _m supplying samples of the primary coolant from m points of the technological chain to spectrometric control, pipeline 12 _{m + 1} supplying flushing water to the measuring chambers of the detecting unit 7 _{n + 2} , common pipeline 12 _{m + 2} for supplying samples of the primary coolant through the safety valve 15 installed to protect against overpressure in the sample pipeline 12 _{m + 2} , and heat exchanger 16 to reduce the temperature in the pipeline 12 _{m + 2} to the set value, pipeline 12 _{m + 3} with shut-off and control valve 3 _{n + 5} supplying samples of the primary coolant and flushing water to the measuring chambers of the spectrometric detection unit 7 _{n + 2} for spectrometric control using the detection unit 7 _{n + 2} , shut-off valves 13 ₁ - 13 _{m + 1} with electric drive of pipelines 12 ₁ - 12 _{m + 1} , throttle valves 14 ₁ - 14 _m to reduce the pressure in pipelines 12 ₁ - 12 _m , safety valve n 15, installed to protect against overpressure in the pipeline 12 _{m + 2} , heat exchanger 16 installed to reduce the temperature of the media in the pipeline 12 _{m + 2} to the set value, degasser 17, in which an overflow protection outlet 17 _{1 is} installed, pipeline for removal of gases 17 ₂ and a level switch 18 ₁ , filled for spectrometric control using a detection unit 7 _{n + 2} at a given speed using a shut-off and control valve 3 _{n + 5 with} samples of the primary coolant and flushing water, remotely controlled shut-off valves 19 ₁ , 19 ₂ for supplying samples of the primary coolant and flushing water from the degasser 17 to the measuring chambers 20 ₁ , 20 ₂ with level switches 18 ₂ , 18 ₃ detecting units 7 _{n + 2} , remotely controlled shut-off valves 21 ₁ , 21 ₂ , for supplying flushing water from the measuring chambers 20 ₁ , 20 ₂ through a remotely controlled shut-off valve 21 ₃ to drain into a special sewerage system, shut-off remotely controlled valves 21 ₁ 21 ₂ , for supplying samples of controlled media from measuring chambers 20 ₁ , 20 ₂ through a remotely controlled shut-off valve 21 ₄ to drain into a collection container for controlled leaks, measuring chambers 22 ₁ , 22 ₂ , 22 ₃ detection units 7 _{n + 3} , remotely controlled shut-off valves 23 ₁ , 23 ₂ , 23 ₃ for supplying second periodically controlled air media to the measuring chambers 22 ₁ , 22 ₂ , 22 ₃ detection units 7 _{n + 3} , remotely controlled shut-off valves 23 ₄ , 23 ₅ , 23 ₆ for supplying purge air to the measuring chambers 22 ₁ , 22 ₂ , 22 ₃ detecting units 7 _{n + 3} , autonomous units 24 ₁ , 24 ₂ , 24 ₃ uninterruptible power supply, operator panel 25 with a personal computer 26, units 27 ₁ , 27 ₂ collection, primary processing and analysis of information connected by a local area network (LAN) with a personal computer 26 of the operator's console 25, junction boxes 28 ₁ -28 _n , and controllers-calculators 29 ₁ - 29 _n , including a microcomputer, source a power supply for the detecting unit, a detector signal conversion device and an input-output device for information via an information channel, a junction box 28 _{n + 1} and a controller-calculator 29 _{n + 1 of the} channel for monitoring the activity of the first periodic monitored air environments, including a microcomputer, a power supply for the detecting unit 7 _{n + 1} , a detector signal conversion device and an information input-output device, a junction box 28 _{n + 2} and a computer-calculator 29 _{n + 2 of a} spectrometric channel for monitoring the activity of radionuclides in the primary coolant, including: a microcomputer, a power supply for the spectrometric detection unit 7 _{n +2} , a detector signal conversion device with the functions of a spectrometer, a multichannel pulse analyzer and an ionizing radiation intensity meter, two information input-output devices, a junction box 28 _{n + 3} and a computer controller 29 _{n + 3} spectrometric channels for monitoring the activity of radionuclides in of several periodically monitored air environments, including a microcomputer, a power supply for the spectrometric detection unit 7 _{n + 3} , a detector signal conversion device with the functions of a spectrometer, a multichannel pulse analyzer and an ionizing radiation intensity meter, two information input-output devices, a block 30 _{1 for} controlling remotely controlled shut-off valves 4 ₁ - 4 _k with information input-output device and junction box 28 _{n + 5} , block 30 ₂ control of remotely controlled shut-off valves 4 _{k + 1} - 4 _{k + p + 3} with information input-output device and junction box 28 _{n + 6} , gas blower control unit 31 9 ₁ , 9 ₂ with an information input-output device and a junction box 28 _{n + 4} , devices 32 ₁ , 32 _{2 for} switching on electric drives of gas blowers 9 ₁ , 9 ₂ and shut-off valves 10 ₁ , 10 ₂ , block 33 protection of measuring chambers from radiation of pipelines supplying samples of the primary coolant to the measuring chambers spectrometric th detecting unit 7 _{n + 2} with collimators 33 ₁ , 33 ₂ measuring chambers 20 ₁ , 20 _2, respectively, a calibration _{radiation source 33 3} and an electric drive 33 ₄ protection units 33, a block 35 for controlling electric drives of shut-off valves 13 ₁ - 13 _{m + 1} , and an electric drive 33 ₄ protection units 33 with an input / output device, a block 34 for switching on electric drives of shut-off valves 13 ₁ - 13 _{m + 1} , and an electric drive 33 ₄ protection units 33, the first block 36 for controlling shut-off valves 19 ₁ , 19 ₂ , 21 ₁ - 21 ₄ measuring chambers 20 ₁ , 20 ₂ spectrometric detecting unit 7 _{n + 2} with input / output device, second block 37 controlling shut-off valves 23 ₁ - 23 ₆ measuring chambers 22 ₁ - 22 ₃ spectrometric detecting unit 7 _{n + 3} with input / output device ... Filters 5 ₁ - 5 _n , installed to remove moisture and aerosols from pipelines before feeding to the detection units 7 ₁ - 7 _n , filters 5 _{n + 1} , 5 _{n + 2} , 5 _{n + 3} , 5 _{n + 4} installed to remove moisture and aerosols from the pipelines before feeding the media to the detecting units 7 _{n + 1} , 7 _{n + 3} and to the common pipeline of the detecting units 1 _{n + 2} .

Outlets of valves 8 ₁ - 8 _{n + 3 are} connected by a common pipeline of detecting units 1 _{n + 2} , to which a vacuum sensor 11 is connected and through valves 10 ₁ , 10 ₂ - gas blowers 9 ₁ , 9 ₂ . Inlets of gas blowers 9 ₁ , 9 _{2 are} connected to pipeline 1 _{n + 2} to ensure air flows in pipelines 1 ₁ - l _{n + 1} , 1 _{n + 3} , l _{n + 4} , l _{n + 5} due to rarefaction of air in pipeline 1 _{n + 2} , and their outputs are connected to the pipeline for removing the monitored media pumped through the detection units and purge air into the special exhaust ventilation. To ensure gravity filling and emptying of the measuring chambers 20 ₁ , 20 _{2, the} degasser 17 is installed above the measuring chambers 20 ₁ 20 ₂ , the pipelines for filling the measuring chambers 20 ₁ , 20 _{2 are} connected to the lower parts of the degasser 17 through valves 19 ₁ , 19 ₂ , and the drain pipelines measuring chambers 20 ₁ , 20 _{2 are} connected to the lower parts of the measuring chambers 20 ₁ , 20 ₂ through valves 21 ₁ , 21 ₂ , 21 ₃ , 21 ₄ . The information outputs of the _{detecting units 7 1} - 7 _{n + 3} are connected to the inputs of the controllers-calculators 29 ₁ - 29 _{n + 3} , and the power supply circuits of the units 7 ₁ - 7 _{n + 3} , detecting are connected to the outputs of the power supplies of the corresponding controllers-calculators 29 ₁ - 29 _{n + 3} . The control circuits of the remotely controlled shut-off valves 4 ₁ - 4 _{k are} connected to the outputs of the _{valve control unit 30 1} , and the outputs of the valves 4 ₁ - 4 _{k are} connected to the inputs of the valve control _{unit 30 1.} The control circuits of the remotely controlled shut-off valves 4 _{k + 1} - 4 _{k + P + 3 are} connected to the outputs of the _{valve control unit 30 2} , and the valve outputs 4 _{k + 1} - 4 _{k + P + 3 are} connected to the inputs of the valve control _{unit 30 2.} The control circuits of the electric drives of the gas blowers 9 ₁ , 9 ₂ and the shut-off valves 10 ₁ , 10 _{2 are} connected to the control outputs of the corresponding devices 32 ₁ and 32 _{2 for} switching on the electric drives, and the outputs of the valves 10 ₁ , 10 _{2 are} connected to the inputs of the corresponding devices 32 ₁ and 32 ₂ . The outputs of the devices 32 ₁ and 32 _{2 for} switching on the electric drives are connected to the inputs of the gas blower control unit 31 9 ₁ , 9 ₂ , and the inputs of the devices 32 ₁ and 32 _{2 are} connected to the outputs of the control unit 31. The control circuits of the electric drives of the valves 13 ₁ - 13 _{m + 1} and the electric drive of the protection unit 33 _{4 are} connected to the control outputs of the block for switching on the electric drives 34, and the outputs of the electric drives of the valves 13 ₁ - 13 _{m + 1} , the electric drive of the protection unit 33 ₄ and the outputs of the level indicators 18 ₁ , 18 ₂ , 18 ₃ filling the degasser 17 and measuring chambers 20 ₁ , 20 _{2 are} connected to the inputs of the block 34 for switching on electric drives. The outputs of the block 34 for switching on electric drives are connected to the inputs of the block 35 for controlling electric drives, and the inputs of the block 34 for switching on electric drives are connected to the outputs of the block 35 for controlling electric drives. The outputs of the control unit 36 are connected to the inputs of the remotely controlled valves 19 ₁ , 19 ₂ , 21 ₁ , 21 ₂ , 21 ₃ , 21 ₄ , and their outputs are connected to the inputs of the control unit 36. The outputs of the control unit 37 are connected to the inputs of the remotely controlled valves 23 ₁ to 23 ₆ , and their outputs are connected to the inputs of the control unit 37. Blocks 30 ₁ control valves 4 ₁ - 4 _k and 31 control gas blowers 9 ₁ , 9 ₂ through their input-output devices and distribution boxes 28 _{n + 4} , 28 _{n + 5 are} connected to the first block 27 ₁ for collecting and primary processing and analysis of information the first control channel (KU1). Controllers-calculators 29 ₁ - 29 _{n + 1} measuring channels for continuous monitoring of air environments and the measuring channel of the first periodically monitored air environments are connected through distribution boxes 28 ₁ - 28 _{n + 1} with block 27 _{1 by the} first information channel (IK1). Block 30 ₂ control valves 4 _{k + 1} -4 _{k + p + 3} through its input-output device and junction box 28 _{n + 6 is} connected to the second block 27 ₂ collection and primary processing and analysis of information by the second control channel (KU2). Computer controllers 29 _{n + 2} and 29 _{n + 3} measuring channels for spectrometric monitoring of radionuclide activity in the primary coolant and spectrometric monitoring of radionuclide activity in second periodically monitored air media through their first input-output devices and junction boxes 28 _{n + 2} , 28 _{n + 3 are} connected to the block 27 ₂ for collecting primary processing and analysis of information by the second information channel (IK2). The controller-calculator 29 _{n + 2} by means of the second input-output device is connected to the control units 35 and 36 through their input-output devices by the third control channel (KU3). The controller-calculator 29 _{n + 3} by means of the second input-output device is connected to the control unit 37 through its input-output device by the fourth control channel (KU4). Control channels KU1, KU2, KU3, KU4 are organized over a twisted pair communication line based on the RS-485 serial interface for the exchange of information transmitted by serial code signals between blocks 27 ₁ and 30 ₁ , 27 ₁ and 31, 27 ₂ and 30 ₂ , as well as between the controller calculator 29 _{n + 2} and the control units 35, 36 and the controller calculator 29 _{n + 3} and the control unit 37. Information channels IK1, IK2 are also organized via a communication line based on a serial interface RS-485 for the exchange of information transmitted by signals of a serial code between blocks 27 ₁ , 27 ₂ and controllers-calculators 29 ₁ - 29 _{n + 3} . Power supply to units 27 ₁ , 27 ₂ and computer 26 is supplied through autonomous units 24 ₁ - 24 _{3 of} uninterruptible power supply. The information outputs of the vacuum sensor 11 are respectively connected to the inputs of the gas blower control unit 31, and the supply inputs of the vacuum sensor 11 are connected to the power supply outputs of the control unit 31.

All technical means included in the system comply with the requirements for electromagnetic compatibility and do not require additional means of protection against electrical and electromagnetic interference. Control channels and information channels for system protection from radio frequency and impulse interference are made with shielded cable. Junction boxes 28 ₁ - 28 _{n + 6} , through which controllers-calculators 29 ₁ - 29 _{n + 3} and blocks 30 ₁ , 30 ₂ , 31 control are connected to the control channels KU1, KU2 and information channels IK1, IK2 units 27 ₁ , 27 ₂ collection and processing of information, provide connection of shielded cables and grounding of cable shields. The second input-output devices of controllers-calculators 29 ₁ -29 _{n + 3} and input-output devices of control units 35, 36, 37 also provide connection of shielded cables and grounding of cable shields.

The initial state of the system is as follows: the shut-off valves 8 ₁ - 8 _{n + 3} are open, the control valves 3 ₁ - 3 _{n + 4 are} set to the positions that provide the specified flow rates through the _{detection units 7 1} - 7 _{n + 1} , 7 _{n + 3} in pipelines 1 ₁ - l _{n + 1} , l _{n + 3} , l _{n + 4} , Power supply to the controllers-calculators 29 ₁ - 29 _{n + 3} , blocks 30 ₁ , 30 ₂ , 31, 35, 36, 37 control is on, power supply units 27 ₁ , 27 ₂ for collecting, primary processing and analysis of information and the console 25 with a computer 26 are fed through autonomous units 24 ₁ - 24 _{3 of} uninterruptible power supply, filters 5 ₁ - 5 _{n + 4 are} filled with filtering material, the values of the minimum and maximum operating values the vacuum created by the gas blowers 9 ₁ , 9 ₂ are set by the operator to the computer 26. In this case, information about the minimum operating values of the vacuum for each gas blower is transmitted from the computer 26 via the local computer network to the unit 27 ₁ for collecting and processing information, and from unit 27 ₁ to channel KU1 - to the control unit 31, in where the minimum operating vacuum values for blowers 9 ₁ and 9 _{2 are} memorized, the butterfly valves 14 ₁ - 14 _m are set to the pressure set for the pipeline 12 _{m + 2.}

Radiation monitoring of air in the premises of the controlled area and ventilation systems of nuclear power plants is carried out as follows. At the command of the operator from the computer 26 of the operator's console 25 through the local computer network, _{information is transmitted to the unit 27 1} for collecting and primary processing and analysis of information about turning on one of the gas _{blowers, for example, 9 1} and the purpose of this blower as the main one, respectively, the gas blower 9 ₂ is assigned as a backup. In block 27 ₁ for collecting and primary processing and analysis of information, this information is converted into control commands in the form of sequential code signals, which are transmitted through the channel KU1, through the junction box 28 _{n + 4} , to the control unit 31. At the outputs of the control unit 31, when a command is received to turn on the gas blower 9 ₁ with the purpose of its main and the purpose of the blower 9 _{2 as} backup, signals are generated that are fed to the inputs of the device 32 _{1 for} turning on electric drives, through which power is supplied to the circuits through the control outputs of the device 32 ₁ control of electric drives of the valve 10 ₁ and gas blower 9 ₁ . The electric voltage supplied to the control circuit of the electric drive of the valve 10 ₁ ensures the opening of the valve 10 ₁ , after which a signal is generated at its output, which is fed to the input of the device 32 _{1 for} switching on electric drives corresponding to the open state of the valve 10 ₁ , according to which in the device 32 _{1 the} switching on of electric drives stops supply voltage supply to the control circuit of the valve electric drive 10 ₁ . Supply on the control circuit voltage supply electric blowers January ₉ provides switching operation in the blower ₉ January. In this case, at the outputs of the device 32 _{1 for} turning on electric drives, signals are generated to the inputs of the control unit 31 corresponding to the open state of the valve 10 ₁ and the turned on gas blower 9 ₁ , and at the outputs of the device 32 _{2 for} turning on electric drives, signals are generated to the inputs of the control unit 31 corresponding to the closed state of the valve 10 ₂ and the off gas blower 9 ₂ . When the gas blower 9 _{1 is} turned on, the output of the sensor 11 generates a signal corresponding to the value of the vacuum created by the blower, which is fed to the input of the control unit 31. When signals appear at the inputs of the control unit 31 corresponding to the switched on gas blower 9 ₁ , the open state of the valve 10 ₁ and information about the magnitude of the _{vacuum created by the blower 9 1} , information in the form of signals is generated in block 31 and transmitted through the channel KU1 through the junction box 28 _{n + 4} sequential code to block 27 ₁ for collecting and primary processing and analysis of information about turning on the gas blower 9 ₁ , opening the valve 10 ₁ and about the magnitude of the vacuum created by the blower 9 ₁ . The values of the required flow rates of continuously monitored air media entering through the supply pipelines 1 ₁ - 1 _n , periodically controlled air media entering through the supply pipelines 2 ₁ - 2 _k and 2 _{k + 1} - 2 _{k + p + 1} , and purge air entering through pipeline 1 _{n + 4} , controlled by flow meters 6 ₁ - 6 _{n + 3} and installed using shut-off and control valves 3 ₁ - 3 _{n + 1} , 3 _{n + 3} , 3 _{n + 4} .

The radiation of continuously monitored air media entering through the supply pipelines 1 ₁ - 1 _n is monitored using continuous monitoring detection _{units 7 1} - 7 _n. The output signals of the _{detecting units 7 1} - 7 _n in the form of statistical sequences of pulses, the number of which for a given time carries information about the radiation activity of the controlled air environments, are fed to the inputs of the controllers-calculators 29 ₁ - 29 _n , in which the values of the controlled environment activity are calculated. Information on the values of radiation activity of continuously monitored air media in the input-output devices of controllers-calculators 29 ₁ - 29 _n is presented in a form convenient for transmission over an information channel and is transmitted to the unit 27 ₁ for collecting and primary processing and analysis of information through junction boxes 28 ₁ - 28 _n on channel IK1.

The radiation of the first periodically monitored air media entering through the supply pipelines 2 ₁ - 2 _k through the valves 4 ₁ - 4 _k into the pipeline 1 _{n + 1 is} controlled by the 7 _{n + 1} detection unit. The output signals of the _{n + 1} detection unit 7 in the form of statistical sequences of pulses, the number of which for a given time carries information about the radiation activity of the monitored air environments, are fed to the input of the _{n + 1} controller-calculator 29, in which the activity values of the first periodically monitored environments are calculated. Information on the values of the radiation activity of the first periodically monitored air environments in the input-output device of the controller-calculator 29 _{n + 1} is presented in a form convenient for transmission via the information channel and is transmitted to the unit 27 ₁ for collecting and processing information through the junction box 28 _{n + 1} channel IR1. The sequence of supply of the first periodically controlled air media supplied through pipelines 2 ₁ - 2 _k to the input of the _{detection unit 7 n + 1} is programmed from the computer 26 of the operator's console 25 in accordance with the periodic control regulations. Information about the sequence of supplying the first periodically monitored air media to the input of the _{n + 1} detection unit 7 is set from the computer 26 in the form of commands transmitted over the local computer network to the unit 27 ₁ for collecting primary processing and analysis of information, in which they are converted into command sequences of exchange signals information with the _{control unit 30 1} via the control channel KU1 through the junction box 28 _{n + 5} . At the output of the _{control unit 30 1} , in this case, sequentially in time and with a given duration, output signals for controlling the valves 4 ₁ - 4 _k are generated, according to which the valves 4 ₁ - 4 _k open and close, providing the first periodically controlled air media to the 7 _{n + 1} detection unit for measurements. To control the correctness of the connection of the first periodically monitored air media at the outlet of the valves 4 ₁ - 4 _k , signals about their state are generated, according to which integral information about the current state of all valves is formed _{at the output of the control unit 30 1 to transmit it, during information exchange through the channel} KU1, to block 27 ₁ for collecting primary processing and analysis of information. From the output of block 27 _1, integral information about the state of valves 4 ₁ - 4 _{k is} delivered to the computer 26 of the operator's console 25 via the local area network. Information about the vacuum value at the gas blower inlet, about the place of sampling of the air medium supplied for periodic monitoring, about the results of monitoring the radiation activity of continuously monitored air environments and the results of monitoring the radiation activity of the first periodically monitored air environments are displayed on the computer screen 26 of the operator's console 25. To ensure the storage of information, the power supply of units 27 ₁ , 27 ₂ and computer 26 is carried out through autonomous units 24 ₁ , 24 ₂ , 24 _{3 of} uninterruptible power supply.

The sequence of supply of the second periodically monitored air media entering the input of the 7 _{n + 3} detection unit through the pipelines 2 _{k + 1} - 2 _{k + P + 1} and from the outlet of the gas outlet 17 ₂ from the degasser 17 of the 7 _{n + 2} detection unit is programmed with computer 26 of the operator's console 25 in accordance with the regulations of periodic control. Information about the sequence of supplying periodically monitored media to the input of the _{detection unit 7 n + 3} is set from the computer 26 of the operator's console 25 in the form of commands transmitted over the local computer network to the unit 27 ₂ for collecting primary processing and analysis of information, in which they are converted into command signal sequences information exchange with the _{control unit 30 2} via the control channel KU2 through the junction box 28 _{n + 6} . At the output of the _{control unit 30 2} , in this case, sequentially in time and with a given duration, output signals for controlling the valves 4 _{k + 1} - 4 _{k + p + 3} are generated, according to which the valves 4 _{k + 1} - 4 _{k + P + 3} open and close, providing, with a predetermined sequence and for a predetermined time, the supply of the second periodically monitored air and gas media to the 7 _{n + 3} detecting unit for spectrometric measurements. To control the correctness of the connection of the second periodically monitored air and gas environments at the outlet of the valves 4 _{k + 1} - 4 _{k + p + 3} , signals about their state are generated, according to which the integral information about the current state of all valves 4 _{k is formed at the output of the control unit 30 2 +1} - 4 _{k + p + 3} to transmit it, in the course of information exchange via channel KU2, to block 27 ₂ for collecting primary processing and analysis of information. From the output of block 27 ₂ via a local computer network, integral information about the state of the valves 4 _{k + 1} - 4 _{k + p + 3 is} delivered to the computer 26 of the operator's console 25.

Spectrometric control of the second periodically monitored air and gas environments is carried out in the following sequence. First, at the output of the block 27 ₂ for collecting primary processing and analysis of information, a command is generated to open one of the valves 4 _k2 - 4 _{k + p + 3} , for example 4 _{k + 3} , which is transmitted as serial code signals via the control channel KU2 through the junction box 28 _{n +6} to the input of the information input-output device _{of the} control unit 30 2, and the command for the calculator controller 29 _{n + 3} about opening the valves 23 ₁ , 23 ₅ , 23 ₆ , which via the information channel IK2 enters through the junction box 28 _{n + 3} to the input of the first input-output device of information of the controller of the calculator 29 _{n + 3} , at the output of the second input-input device of which a command is then generated for the control unit 37 for opening the valves 23 ₁ , 23 ₅ , 23 ₆ , which in the form of serial code signals is received via the control channel KU4 to the input of the input-output device of the control unit 37, providing the formation at its outputs of a sequence of signals for opening the valves 23 ₁ , 23 ₅ , 23 ₆ . After the opening of the valve 4 _{k + 3} and valves 23 ₁ , 23 ₅ , 23 ₆ at the outlet of the valves, opening signals are generated, which are fed to the inputs of the _{control units 30 2} and 37, respectively. At the output of the _{control unit 30 2} , information about the opening of the valve 4 _{k + 3} is generated, which in the form of sequential code signals through the junction box 28 _{n + 6} via channel KU2 is fed to the input of the unit 27 ₂ for collecting preliminary processing and analysis of information. At the output of the control unit 37, information about the opening of valves 23 ₁ , 23 ₅ , 23 _{6 is} then generated, which in the form of signals of a sequential code is fed via channel KU4 to the input of the second input-output device of the controller-calculator 29 _{n + 3} . At the output of the first input-output device of the controller-calculator 29 _{n + 3,} then information about the opening of valves 23 ₁ , 23 ₅ , 23 ₆ is generated, which is transmitted in the form of serial code signals through the junction box 28 _{n + 3} via the information channel IK2 and arrives to the input of block 27 ₂ for collecting primary processing and analysis of information in the course of information exchange between the controller-calculator 29 _{n + 3} and block 27 ₂ . After that, in block 27 ₂ for collecting preliminary processing and analysis of information, a command is formed for the controller-calculator 29 _{n + 3} to measure the radiation intensity of the controlled environment, which is transmitted through the IK2 channel from block 27 ₂ through the junction box 28 _{n + 3} to the input of the first device input-output of the controller-calculator 29 _{n + 3} . After opening the valve 4 _{k + 3} and valve 23 ₁ , the controlled medium is supplied to the measuring chamber 22 _{1 of the} maximum size to reduce the time when assessing the intensity of radiation from the controlled air, and by opening the valves 23 ₅ , 23 ₆ , purge air is supplied to the rest chambers 22 ₂ , 22 ₃ . Measuring chambers 22 ₁ , 22 ₂ , 22 _{3 are} installed in the protection unit to exclude the influence of external radiation from pipelines supplying controlled media. Using the spectrometric detector of the 7 _{n + 1 detecting unit and the 29 n + 3} controller-calculator, the radiation intensity from the monitored medium is determined by the number of pulses of electrical signals from the detecting unit per unit time. Information about the results of determining the radiation intensity of the controlled environment from the output of the first input-output device of the controller-calculator 29 _{n + 3} through the junction box 28 _{n + 3} is transmitted through the IK2 channel to the block 27 ₂ for collecting preliminary processing and analysis of information in the course of information exchange between the controller. calculator 29 _{n + 3} and block 27 ₂ collecting preliminary processing and analysis of information. By the value of the measured intensity in the block 27 ₂ for collecting preliminary processing and analysis of information, the working chamber is determined, for example, 22 ₂ and the measurement duration T and ₁ , which provide optimal conditions for spectrometric measurements. Based on this information, in the input-output device of the block 27 ₂ for collecting preliminary processing and analysis of information, a command is generated to open the valve 23 ₂ and close the valve 23 ₅ , which, via the IK2 channel in the form of serial code signals, goes through the junction box 28 _{n + 3} to the first input device - the output of the calculator controller 29 _{n + 3} . At the output of the second input-output device of the controller-calculator 29 _{n + 3} , a command is then generated, which in the form of serial code signals is fed to the input-output device of the control unit 37 and provides at its output the formation of a signal for opening the valve 23 ₂ and closing the valve 23 ₅ ... When the valve 23 ₂ is opened, an opening signal is generated at its output, and when the valve 23 ₅ is closed, a closing signal is generated at its output, which is fed to the input of the control unit 37 and provides information about opening the valve 23 ₂ and closing the valve 23 ₅ at the output of the input device - the output of the control unit 37, which in the form of signals of the sequential code through the channel KU4 is fed to the second input-output device of the controller-calculator 29 _{n + 3} . At the output of the first input-output device of the controller-calculator 29 _{n + 3} , information is then generated, which in the form of serial code signals through the junction box 29 _{n + 3} via channel IK2 is fed to the input-output device of the unit 27 ₂ for collecting preliminary processing and analysis of information ... After that, at the output of the input-output device of the unit 27 ₂ , a command to open the valve 23 ₄ is generated, which, via the IK2 channel through the junction box 28 _{n + 3, is} fed to the first input-output device of the controller-calculator 29 _{n + 3} . At the output of the second input-output device of the controller-calculator 29 _{n + 3} , a command to open the valve 23 _{4 is} then generated, which in the form of serial code signals is sent via channel KU4 to the input-output device of the control unit 37. Upon the command to open the valve 23 _{4 , the signal for opening the valve 23 4} is generated at the output of the control unit 37. After opening the valve 23 ₄ , an opening signal is generated at its output, which is fed to the input of the control unit 37, at the output of the input-output device of which information is generated, which in the form of serial code signals is fed through the channel KU4 to the second input-output device of the controller-calculator 29 _{n + 3} . From the output of the first input-output device of the controller-calculator 29 _{n + 3,} information about the opening of valves 23 ₄ , 23 ₆ (valve 23 ₆ was opened when evaluating the intensity) enters through the junction box 28 _{n + 3} via channel IK2 to the input / output device of unit 27 ₂ collection of preliminary processing and analysis of information. With the help of the valve 23 ₂ , the controlled air is supplied to the measuring chamber 22 ₂ , and with the help of the valves 23 ₄ , 23 ₆ , the purge air is supplied to the remaining chambers 22 ₁ , 22 ₃ . After that, on the command transmitted from the block 27 ₂ for collecting preliminary processing and analysis of information via the IK2 channel through the junction box 28 _{n + 3} to the input of the first input-output device of the controller-calculator 29 _{n + 3} in the course of information exchange between the controller-calculator 29 _{n +3} and block 27 ₂ for collecting preliminary processing and analysis of information, a command is sent to carry out spectrometric measurements of the controlled environment, the duration of T and _{1 of} which was determined by assessing the radiation intensity from the controlled environment using the output signals of the detection _{unit 7 n + 3.} The output signals of the 7 _{n + 3} detection unit in the form of a statistical sequence of pulses, the amplitudes of which carry information about the radionuclide composition, and the number of pulses of the same amplitude for a given time carries information about the radiation activity of radionuclides of the second periodically monitored air environments, are fed to the input of the controller-calculator 29 _{n +3} , a detector signal conversion device in which it has the functions of a spectrometer and a multichannel pulse analyzer. At the output of the controller-calculator 29 _{n + 3} after spectrometric measurements, information about the radionuclide composition and the activity of the radiation of radionuclides of gases in the air of the controlled air is formed, which is converted into a form convenient for transmission through the information channel and transmitted to the collection _{unit 27 2} primary processing and analysis of information through a junction box 28 _{n + 3} via channel IK2. The output information of the block 27 ₂ for collecting primary processing and analysis of information about the radionuclide composition and activity of radionuclides of gases, in the air of the controlled control channel of the second periodically monitored air environments via the local area network LAN is transmitted to the computer 26 of the operator's console 25.

To control the correctness of the delivery of second periodically controlled air medium in the measuring chamber of the detecting unit 7, _{n + 3,} the outlet valve 4 _{k + 1} - 4 _{k + P + 3} formed signals of their condition, in which the output unit 30 ₂ Control formed integral information about the current state of all valves to transmit it, in the course of information exchange via channel KU2, to block 27 ₂ for collecting primary processing and analysis of information. From the output of block 27 ₂ for collecting primary processing and analysis of information, integral information about the state of the valves 4 _{k + 1} - 4 _{k + p + 3 is} delivered to the computer 26 of the operator's console 25 via the local area network.

Monitoring the activity of radionuclides in the samples of the primary coolant is also carried out programmatically from the computer 26 of the operator's console 25, in accordance with the procedure for periodic monitoring. Information on the sequence of feeding samples of the primary coolant to the degasser 17 and supplying samples of the primary coolant to the measuring chambers of the _{n + 2} detection unit 7 after removing gaseous media from them in the degasser 17 is given in the form of commands transmitted over the local computer network from the computer 26 of the console 25 operator for block 27 ₂ for collecting primary processing and analysis of information, in which they are converted into command sequences of information exchange signals with the controller-calculator 29 _{n + 2} , which are fed to the first input-output device of the controller-calculator 29 _{n + 2} through the junction box 28 _{n + 2} on the IK2 channel. According to the commands received in the course of information exchange with the unit 27 ₂ for collecting primary processing and analysis of information, control information is generated in the second input-output device of the controller-calculator 29 _{n + 2} , which is in the form of commands transmitted in the form of serial code signals via the control channel KU3 , is supplied to the input-output devices of the control units 35 and 36. When the controller-calculator 29 _{n + 2} through the IK2 channel from the block 27 ₂ for collecting primary processing and analysis of information commands to perform spectrometric control of gases contained in the primary circuit coolant, the command "pouring the primary circuit coolant through the degasser" is generated at its output, through which, through the control channel KU3, the control unit 35 receives a command to open one of the valves 13 ₁ - 13 _m , for example 13 ₁ , through which the coolant of the primary circuit enters the degasser 17 from the point of the technological chain closest to the effect of the fuel elements, and to the control unit 36 the commands for opening the valves 19 ₁ , 21 ₁ , 21 ₄ or 19 ₂ , 21 ₂ , 21 ₄ are received sequentially in time, for example, 19 ₂ , 21 ₂ , 21 ₄ . At the output of the control unit 35, an output signal is formed, which is fed to the input of the block 34 for switching on electric drives, after which the supply voltage of the electric drive of the valve 13 ₁ appears at the output of the block 34 for switching on the electric drives. After that, the electric drive of the valve 13 ₁ begins to move towards the opening of the valve, and when the electric drive of the valve 13 ₁ reaches the opening position, a valve opening signal is generated at its output, which is fed to the input of the block 34 for turning on the electric drives. According to this signal, the power supply to the electric drive of the valve 13 _{1 is} stopped in the block 34 for turning on the electric drives, and at the output of the block 34, an output signal for opening the valve 13 ₁ is generated, which is fed to the input of the control unit 35, in which information about the opening of the valve 13 ₁ is generated, which in in the form of signals of a sequential code from the output of the input-output device of the block 35 through the channel KU3 is fed to the input-output device of the controller-calculator 29 _{n + 2} . At the output of the control unit 36, in this case, signals for opening the valves 19 ₂ , 21 ₂ , 21 ₄ are formed sequentially in time, according to the commands for opening the valves 19 ₂ , 21 ₂ , 21 ₄ , received from the second input device of the controller of the calculator 29 _{n + 2} via the channel KU3, to the input-output device of the control unit 36 in the form of serial code signals. These signals will open the valves 19 ₂ 21 ₂ , 21 ₄ and at their outputs, the valve opening signals will be generated, which will be sent to the corresponding inputs of the control unit 36. After that, in the control unit 36, information about the opening of the valves 19 ₂ , 21 ₂ , 21 _{4 is} generated, which from the output of the input-output device in the form of serial code signals is fed through the channel KU3 to the second input-output device of the controller-calculator 29 _{n + 2} . After opening the valve 13 _{1, the} coolant of the first circuit begins to flow into the degasser 17, which then, through the open valves 19 ₂ , 21 ₂ , 21 _{4, is} drained into the container for collecting controlled leaks. Information about the state of valves 19 ₂ , 21 ₂ , 21 ₄ and valve 13 ₁ from the output of the input-output devices of the control units 35 and 36 via the KU3 channel is fed to the second input-output device of the controller-calculator 29 _{n + 2} , and from the first input device - the output of the controller-calculator 29 _{n + 2,} this information is fed through the junction box 28 _{n + 2} via channel IK2 to the input-output device of the unit 27 ₂ for collecting primary processing and analysis of information. Upon receipt of information about the opening of valves 19 ₂ , 21 ₂ , 21 ₄ and valve 13 ₁ in block 27 ₂ , a command is generated sequentially in time for the _{control unit 30 2} to close the valve 4 _{k + 1} to connect a branch to remove gases from the degasser into the exhaust special ventilation and the valve (one of 4 _{k + 3} - 4 _{k + p + 3} ) and the opening of the valve 4 _{k + 2} , which from the input-output device of the unit 27 ₂ are fed through the control channel KU2 to the input-output device of the _{control unit 30 2} , at the output which signals are generated to close the valve 4 _{k + 1} and the valve (one of 4 _{k + 3} - 4 _{k + p + 3} ) and open the valve 4 _{k + 2} . After the 4 _{k + 1} valves and the valve (one of 4 _{k + 3} - 4 _{k + p + 3} ) are closed, closing signals are generated at their outputs, and after the 4k + 2 valve is opened, an opening signal is generated at its output. Signals to close the valves 4 _{k + 1} and the valve (one of 4 _{k + 3} - 4 _{k + p + 3} ) and the signal to open the valve 4 _{k + 2} are fed to the corresponding inputs of the control _{unit 30 2.} After that, in the control unit 30 ₂ , information is generated about the closing of the valves 4 _{k + 1} and the valve (one of 4 _{k + 3} - 4 _{k + p + 3} ) and the opening of the valve 4 _{k + 2} , which is transmitted from the output of its input-output device in the form of signals of a sequential code through the junction box 28 _{n + 6} through the channel KU2 to the block 27 ₂ for collecting primary processing and analysis of information.

After opening the valve 4 _{k + 2,} gases from the degasser 17, due to the vacuum created by the working gas blower 9 ₁ or 9 ₂ , will begin to flow through the valve 4 _{k + 2} into the pipeline 1 _{n + 3} with measuring chambers 22 ₁ , 22 ₂ , 22 ₃ , detecting devices 7 _{n + 3} . In block 27 _{2 of} preliminary processing and analysis of information, information is then generated for the controller-calculator 29 _{n + 3} about the assessment of the radiation intensity to determine the measuring chamber and the duration of spectrometric measurements of gases from the degasser 17 according to the previously described algorithm, which through the input-output device of the unit 27 ₂ through channel IK2 comes through the box 28 _{n + 3} to the input-output device of the controller-calculator 29 _{n + 3} . In this case, the controller-calculator 29 _{n + 3 is} transferred to the mode of operation of the ratemeter for a given time, after which information for assessing the intensity through the first input-output device of the controller-calculator 29 _{n + 3} is transmitted via channel IK2 to the input-output device of unit 27 ₂ collection of preliminary processing and analysis of information. After evaluating the intensity of the radiation of gases from the degasser 17 and determining the working measuring chamber and the measurement time T _and information is generated for the controller-calculator 29 _{n + 3} about the performance of spectrometric measurements. Upon receipt of this information, the controller-calculator 29 _{n + 3} provides spectrometric measurements of gases from the degasser 17 according to the previously described algorithm. At the end of the measurements, the controller-calculator 29 _{n + 3} provides the transmission of information about the radionuclide composition and activity of radionuclides of gases dissolved in the coolant to the block 27 ₂ for collecting preliminary processing and analysis of information via the IK2 channel. In block 27 ₂ , an analysis is made for the absence or presence of gaseous fission products of nuclear fuel in the coolant of the primary circuit and, accordingly, the absence or presence of gas leaks in the fuel rods. Information about the results of the analysis of the absence or presence of gas leaks in the fuel rods is transmitted via the LAN from unit 27 ₂ to the computer 26 of the operator's console 25. After receiving the measurement results of gases from the degasser 17 in the block 27 ₂ for collecting preliminary processing and analysis of information, a command is generated for the _{control unit 30 2} to close the valve 4 _{k + 2} and open one of the valves 4 _{k + 3} - 4 _{k + p + 3} , for example 4 _{k + i} , which ensures the connection of the next periodic control of the air environment to the 7 _{n + 3} detection unit according to the regulations, and when this command is executed according to the previously described algorithm, a command is generated to open the valve 4 _{k + 1} , which ensures the removal of gases from the degasser 17 into the exhaust special ventilation, which, via the control channel KU2, comes from the input-output device of the unit 27 ₂ for collecting primary processing and analysis of information through the junction box 28 _{n + 6} to the input-output device of the control _{unit 30 2.} On this command, at the output of the _{control unit 30 2} , a signal for opening the valve 4 _{k + 1} is generated. When the inlet unit 30 ₂ of the valve closing control signals 4 _{k + 2} and signal the opening of valves 4 _{k + 1,} and 4 _{k + i} on the input-output device unit 30 ₂ is formed by information about this to unit 27 ₂ of collecting primary information processing and analysis ... At the output of block 27 ₂ , information is then generated for the controller-calculator 29 _{n + 3} on the performance of spectrometric measurements of the medium received for periodic monitoring through the valve 4 _{k + i} , which is fed through the IK2 channel through the junction box 28 _{n + 3} to the first input device - the output of the calculator controller 29 _{n + 3} . Upon receipt of this command, the controller-calculator 29 _{n + 3} provides spectrometric measurements of the controlled medium flowing through the pipeline 2 _{k + i} and the transmission of the measurement results to the unit 27 ₂ for collecting primary processing and analysis of information according to the previously described algorithm. After the completion of spectrometric measurements of gases from the degasser 17, at the output of the block 27 ₂ for collecting primary processing and analysis of information, control information is generated for the controller-calculator 29 _{n + 2} on the performance of spectrometric measurements of the activity of the primary coolant samples. When the controller-computer 29 _{n + 2} receives information about the spectrometric measurements of samples of the primary coolant, at its output a command is generated to fill the degasser 17 with a sample of the primary coolant, through which the control unit 36 from the input-output device of the controller-calculator 29 _{n + 2} through the control channel KU3, the commands for closing the valves 19 ₂ , 21 ₂ and 21 ₄ are sent sequentially in time. At the output of the control unit 36, the signal for closing the valve 19 ₂ , then closing the valve 21 ₂ and then closing the valve 21 ₄ are formed sequentially in time. After the valves 19 ₂ , 21 ₂ and 21 _{4 are} closed, the degasser 17 will begin to fill with a sample of the primary coolant, and the valve _{closure signals will be generated at the outputs of the valves 19 2} , 21 ₂ and 21 ₄ , which are sent to the corresponding inputs of the control unit 36. The control unit 36 then generates information about the closed state of the valves 19 ₂ , 21 ₂ and 21 ₄ . Information about the closed state of valves 19 ₂ , 21 ₂ and 21 ₄ from the output of the input-output device of the control unit 36 via channel KU3 is fed to the second input-output devices of the controller-calculator 29 _{n + 2} , and from the output of the first input-output device of the controller the calculator 29 _{n + 2,} this information through the junction box 28 _{n + 2} through the channel IK2 is fed to the input of the block 27 ₂ for collecting preliminary processing and analysis of information. When the degasser 17 is filled with a sample of the primary coolant, the level indicator 18 _{1 is} triggered and a signal is generated at its output, which is fed through the block 34 for switching on the electric drives to the input of the control unit 35. According to this signal, the control unit 35 generates a signal for the electric drive activation unit 34, through which power is supplied to the control circuits of the electric drive of the valve 13 ₁ through its control outputs to close it. When the valve 13 ₁ reaches the closed state, at the output of its electric drive a signal is generated to close the valve 13 ₁ , which is fed to the input of the block 34 for switching on the electric drives and provides at its control output the power supply to the input of the electric drive of the valve 13 _{1 is} stopped, while the degasser 17 will no longer be supplied a sample of the coolant of the first circuit, and at the output of the block 34 for turning on the electric drives, a signal is generated to close the valve 13 ₁ , which is fed to the input of the control unit 35. Information about the state of the valve 13 ₁ and the level indicator 18 _{1 of the} degasser 17 from the output of the input-output device of the control unit 35 through the channel KU3 is fed in the form of serial code signals to the second input-output devices of the controller-calculator 29 _{n + 2} , and from the output of the first device the input-output of the controller-calculator 29 _{n + 2,} this information through the channel IK2 arrives in the form of signals of a sequential code to the input of the input-output device of the block 27 ₂ for collecting preliminary processing and analysis of information. In the controller-calculator 29 _{n + 2,} after the alarm 18 _{1 of the} filling of the degasser 17 is triggered, the time (Tdeg) set for degassing and the decay of short-lived isotopes in the sample of the coolant of the primary circuit that has filled the degasser 17 begins. After that, in the controller-calculator 29 _{n + 2} a command is generated for the control unit 35 to set the protection unit 33 to position 33 _{3 of the} calibration source of ionizing radiation, which from the output of the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 is sent in the form of serial code signals to the input-output device of the unit 35 controls. According to this command, the control unit 35 generates signals for the unit 34 for turning on the electric drives, through which, through its control outputs, power is supplied to the control circuits of the electric drive 33 ₄ of the protection unit 33. After that, the electric drive 33 ₄ provides movement of the protection unit 33 until it is installed in a position corresponding to the calibration source of ionizing radiation 33 ₃ , in which radiation from the calibration source of ionizing radiation 33 _{3 is} directed to the spectrometric detection unit 7 _{n + 2} . When the protection unit 33 is set to the position - the calibration source of ionizing radiation 33 ₃ at the output of the electric drive 33 ₄ of the protection unit 33, a signal is generated, which is fed to the input of the block 34 for turning on the electric drives and provides at its control output the interruption of the power supply to the input of the electric drive 33 ₄ of the protection unit 33 , and from the output of the unit 34 for turning on the electric drives to the input of the control unit 35, a signal is received, according to which information is generated in the control unit 35 for the controller-calculator 29 _{n + 2} about the installation of the protection unit 33 in the position of the calibration source of ionizing radiation 33 ₃ , which through the input device - the output of the control unit 35 through the channel KU3 is supplied in the form of serial code signals to the second input-output device of the controller-calculator 29 _{n + 2} . Thereafter, the controller-calculator 29 _{n + 2} program is translated in the spectrometric measurement mode of ionizing radiation from the calibration source 33 _3, the results of which through the first device, a calculator controller IO 29 _{n + 2} and the junction box 28 _{n + 2} channel SG2 transmitted to block 27 ₂ collection of preliminary processing and analysis of information. In block 27 ₂ for collecting preliminary processing and analysis of information, the results of calibration measurements are evaluated and, if necessary, the conversion function of the spectrometer of the controller-calculator 29 _{n + 2 is} refined. At the end of the time Tdeg, the controller-calculator 29 _{n + 2 is} programmed into the mode of measuring the intensity of ionizing radiation from the controlled sample of the primary coolant. After that, at the output of the controller-calculator 29 _{n + 2} , a command is generated for the control unit 36 to open one of the valves 19 ₁ , 19 ₂ , for example, 19 ₂ , which ensures the filling of the measuring chamber 20 ₂ , which is used to measure the intensity of ionizing radiation from the sample of the coolant of the first contour. This command from the output of the second input-output device of the controller-calculator 29 _{n + 2} via channel KU3 in the form of serial code signals is sent to the input-output device of the control unit 36. After receiving this command at the output of the control unit 36, a signal is generated to open the valve 19 ₂ , which is fed to the input of the valve 19 ₂ and ensures its opening. The output signal of the valve 19 ₂ , carrying information about its opening, is fed to the input of the control unit 36, while information about the opening of the valve 19 ₂ is generated in block 36, which is transmitted from the output of its input-output device in the form of serial code signals to the second input device - the output of the controller-calculator 29 _{n + 2} through the channel KU3 in the course of information exchange between the block 36 and the controller-calculator 29 _{n + 2} . After opening the valve ₁₉ February is filled measuring chamber 20, ₂ samples of primary coolant, which lasts until the level switch actuation March ₁₈ filling the measuring chamber ₂₀ February. After the triggering of the level indicator 18 ₃ filling the chamber 20 ₂ , which is determined by the appearance of the output signal of the indicator 18 ₃ coming through the block 34 for switching on the electric drives to the input of the control unit 35, at the output of the input-output device of the control unit 35, information about the filling of the measuring chamber 20 is generated. ₂ breakdown of the primary coolant. This information in the form of serial code signals is transmitted to the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 in the course of information exchange between the control unit 35 and the controller-calculator 29 _{n + 2} . After receiving information about the operation of the indicator 18 _{3 of} the filling level of the measuring chamber 20 ₂ , at the output of the second input-output device of the controller-calculator 29 _{n + 2} , a command is generated to close the valve 19 ₂ and a command to set the protection unit 33 to the position of the collimator 33 ₂ , which provides reception by the detecting unit 7 _{n + 2} radiation from the measuring chamber 20 ₂ . These commands are sent via channel KU3 to the input-output devices of the control units 35 and 36. The command to close the valve 19 ₂ provides the formation at the output of block 36 of the signal to close the valve 19 ₂ . The command to set the protection unit 33 to the position of the collimator 33 _{2 of the} measuring chamber 20 ₂ provides the formation at the output of the control unit 35 of a signal for the unit 34 for switching on electric drives, which provides power supply to the control circuit of the electric drive 33 ₄ of the protection unit 33 through the control outputs of the unit 34 for installation the protection unit 33 in the position of the collimator 33 ₂ , providing the supply of radiation from the measuring chamber 20 ₂ to the spectrometric detection unit 7 _{n + 2} . After installing the electric drive of the protection unit 33 in the position of the collimator 33 ₂ , corresponding to the working measuring chamber 20 _2, at its output, a signal is generated to set the protection unit 33 to the position of the collimator 33 _{2 of the} working measuring chamber 20 ₂ . _{According to this signal, the power supply to the electric drive 33 4 is} stopped at the control outputs of the unit 34 for turning on the electric drives, and at the output of the input-output device of the control unit 35 information is generated about the installation of the protection unit 33 in the position of the collimator 33 _{2 of the} working chamber 20 ₂ , which is transmitted from the output of the device the input-output of the control unit 35 in the form of serial code signals via the channel KU3 to the second input-output device of the controller-calculator 29 _{n + 2} during information exchange between the control unit 35 and the controller-calculator 29 _{n + 2} . After closing the valve 19 ₂ , a signal is generated at its output, which is fed to the input of the control unit 36. _{According to this signal, information about closing the valve 19 2} is generated at the output of the input-output device of the control unit 36, which is transmitted from the output of the input-output device of the block 36 in the form of serial code signals via the channel KU3 to the second input-output device of the controller-calculator 29 _{n + 2} in the course of information exchange between the block 36 and the controller-calculator 29 _{n + 2} . Upon receipt of information about closing the valve 19 ₂ and setting the protection unit 33 to the position of the collimator 33 _{2 of the} working measuring chamber 20 ₂ , the calculator 29 _{n + 2 is} switched on to the mode of measuring the intensity of ionizing radiation from the sample of the primary coolant that has filled the chamber 20 ₂ . According to the results of measuring the intensity in the controller-calculator 29 _{n + 2} , the working chamber is determined, for example, 20 ₁ and the measurement duration T and ₁ , which provide optimal conditions for spectrometric measurements. In this case, in the controller-calculator 29 _{n + 2} , a command is formed to open valves 21 ₂ , 21 ₄ to drain the sample from the measuring chamber 20 ₂ into the collection tank of controlled leaks and to open valve 19 ₁ to fill the chamber 20 _{1 with a} sample of the primary coolant from the degasser 17. According to this command, information for the control unit 36 about opening the valves 19 ₁ , 21 ₂ , 21 ₄ is generated on the second input-output device of the controller-calculator 29 _{n + 2} , which is transmitted via the KU3 channel in the form of serial code signals to the control unit 36 in the course of information exchange between the control unit 36 and the controller-calculator 29 _{n + 2} . Upon receipt of this information, the control unit 36 sequentially in time generates the output signals for opening the valves 21 ₂ , 21 ₄ and opening the valve 19 ₁ , which open the valves 21 ₂ , 21 ₄ and 19 ₁ . After that, the chamber 20 ₂ is emptied through the valves 21 ₂ , 21 ₄ into the container for collecting controlled leaks and the chamber 20 _{1 is} filled through the valve 19 ₁ . The filling of the measuring chamber 20 ₁ continues until the level switch 18 _{2 of} its filling is triggered, the emptying of the measuring chamber 20 ₂ is determined by a given time Tcl _{2 of the} sample drain from the chamber 20 ₂ . After the time delay Tcl _{2 of the} chamber 20 ₂ at the output of the second input-output device of the controller-calculator 29 _{n + 2} , a command is generated to close the valves 21 ₂ , 21 ₄ for the control unit 36, which is fed through the channel KU3 to the input-output device of the control unit 36 and ensures the formation at its output sequentially in time of signals about closing the valves 21 ₂ , 21 ₄ . After the valves 21 ₂ , 21 _{4 are} closed, signals are generated at their outputs, which are fed to the input of the control unit 36. Based on these signals, block 36 generates information about closing the valves 21 ₂ , 21 ₄ , which is transmitted from the output of its input-output device in the form of serial code signals to the second input-output device of the controller-calculator 29 _{n + 2} via the KU3 channel during the information exchange between the control unit 36 and the controller-calculator 29 _{n + 2} . After triggering of the level indicator 18 ₂ filling the measuring chamber 20 ₁ according to the output signal of the level indicator, which, through the block 34 for switching on electric drives, enters the input of the control unit 35 and provides in the control unit 35 the formation of information about the filling of the measuring chamber 20 ₁ , which from the output of its input device -output in the form of serial code signals is transmitted to the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 in the course of information exchange between the control unit 35 and the controller-calculator 29 _{n + 2} . Upon receipt by the controller-calculator 29 _{n + 2} information about the triggering of the level indicator 18 ₂ filling the measuring chamber 20 ₁ at the output of its second input-output device, a command is generated to close the valve 19 ₁ , which is sent through the channel KU3 to the input-output device of the control unit 36 and provides the formation at its output of a signal to close the valve 19 ₁ . After closing the valve 19 ₁ , a signal is generated at its output, which is fed to the input of the control unit 36. _{According to this signal, information about closing the valve 19 1} is generated at the output of the input-output device of the unit 36, which in the form of serial code signals is transmitted to the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 during information exchange between the control unit 36 and a computer controller 29 _{n + 2} . After receiving information about closing the valve 19 ₁ at the output of the controller-calculator 29 _{n + 2} , a command is generated to set the protection unit 33 to the position of the collimator 33 ₁ , corresponding to the working measuring chamber 20 ₁ . This command is sent via channel KU3 to the input-output device of the control unit 35. The command to set the protection unit 33 in the position of the collimator 33 _{1 of the} measuring chamber 20 ₁ provides the formation at the output of the control unit 35 of a signal for the unit 34 for switching on the electric drives, which provides power supply to the control circuit of the electric drive 33 ₄ of the protection unit 33 through the outputs of the unit 34 for switching on the electric drives for installation of the protection unit 33 in the position of the collimator 33 ₁ , the working measuring chamber 20 ₁ . After installing the electric drive 33 ₄ of the protection unit 33 in the position of the collimator 33 ₁ , providing the direction of radiation from the working measuring chamber 20 ₁ to the detecting unit 7 t ₊₂ , at the output of the electric drive 33 ₄ a signal is generated to set the protection unit 33 to the position of the collimator 33 _{1 of the} working measuring chamber 20 ₁ , which is fed to the input of the unit 34 for switching on electric drives and from its output to the input of the control unit 35. According to this signal, in block 34, the power supply of the electric drive 33 ₄ of the protection unit 33 is disconnected, and in the control unit 35 information is generated about the installation of the protection unit 33 in the position of the collimator 33 _{1 of the} working measuring chamber 20 ₁ , which from the output of its input-output device in the form of signals the serial code is transmitted through the channel KU3 to the second input-output device of the controller-calculator 29 _{n + 2} in the course of information exchange between the control unit 35 and the controller-calculator 29 _{n + 2} . Upon receipt of information about the closure of the valve 19 ₁ and the installation of the protection unit 33 in the position of the collimator 33 _{1 of the} working measuring chamber 20 ₁ , the computer controller 29 _{n + 2 is} switched on to the mode of spectrometric measurements of ionizing radiation in the sample of the primary coolant that filled the measuring chamber 20 ₁ for a while Ti ₁ . After the end of the spectrometric measurements, information about the measurement results through the first input-output device of the controller-calculator 29 _{n + 2} and the junction box 28 _{n + 2} via the IK2 channel is transmitted to the unit 27 ₂ for collecting primary processing and analysis of information. In block 27 ₂ , the radionuclide composition and activity of radionuclides in the sample of the primary coolant are determined and the absence or presence of dissolved fission products of nuclear fuel atoms in it and, accordingly, the presence or absence of fuel elements with leaky cladding is estimated. After the end of the time T and _{1 of} the spectrometric measurements in the controller-calculator 29 _{n + 2} , a command is formed for the unit 36 to open the valves 19 ₁ , 21 ₁ , 21 ₄ to empty the degasser 17 and the measuring chamber 20 ₁ into the container for collecting controlled leaks, which in the form signals of the sequential code is transmitted to the control unit 36 through the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 in the course of information exchange between the control unit 36 and the controller-calculator 29 _{n + 2} and provides the formation at the output of the control unit 36 sequentially in time of signals of opening of valves 19 ₁ and 21 ₁ , 21 ₄ . After the valves 19 ₁ , 21 ₁ , 21 ₄ are opened, signals are generated at their outputs, which are fed to the input of the control unit 36. According to these signals, information about the opening of valves 19 ₁ , 21 ₁ , 21 ₄ is generated in the control unit 36, which, through its input-output device in the form of serial code signals via channel KU3, is fed to the second input-output device of the controller-calculator 29 _{n + 2} in the course of information exchange between the block 36 and the controller-calculator 29 _{n + 2} . After receiving information about the opening of valves 19 ₁ , 21 ₁ , 21 ₄ , the computer controller 29 _{n + 2} starts counting the preset time Top _{1 for} emptying the degasser 17 and the measuring chamber 20 ₁ into the collection tank of controlled leaks. After the end of the time Top ₁ emptying the degasser 17 and the measuring chamber 20 ₁ in the controller-calculator 29 _{n + 2} , a command is generated for the control unit 36 to close the valves 19 ₁ , 21 ₁ , 21 ₄ , which is transmitted to the input device in the form of serial code signals. output of the control unit 36 through the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 in the course of information exchange between the unit 36 and the controller-calculator 29 _{n + 2} and provides the formation of signals at the outputs of the control unit 36 for closing the valves 19 ₁ , 21 ₁ , 21 ₄ . After the valves 19 ₁ , 21 ₁ , 21 _{4 are} closed, signals are generated at their outputs, which are fed to the inputs of the control unit 36. According to these signals in the control unit 36, information about the closing of the valves 19 ₁ , 21 ₁ , 21 ₄ is generated, which is transmitted in the form of serial code signals through its input-output device to the second input-output device of the controller-calculator 29 _{n + 2} via the KU3 channel in the course of information exchange between the block 36 and the controller-calculator 29 _{n + 2} . This information from the output of the first input-output device of the controller-calculator 29 _{n + 2} through the junction box 28 _{n + 2} is transmitted via channel IK2 to the input-output device of the unit 27 ₂ . After receiving information about closing the valves 19 ₁ , 21 ₁ , 21 ₄ in the controller-calculator 29 _{n + 2} , a command is generated for the control unit 35 about opening the valve 13 _{m + 1} , which is sent in the form of serial code signals to the input of the input-output device of the unit 35 through the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 in the course of information exchange of the controller-calculator 29 _{n + 2} with the control unit 35. According to this command, a signal is generated at the output of the control unit 35, according to which power is supplied to the control circuit of the electric drive of the valve 13 _{m + 1} through the output of the unit 34 for switching on electric drives to open it. When the valve 13 _{m + 1} reaches the opening position, a signal is generated at the outputs of its electric drive, which is fed to the input of the block 34 for turning on electric drives and provides at its output the power supply to the control circuit of the electric drive of the valve 13 _{m + 1} and the formation of a signal at the output of block 34 for turning on electric drives corresponding to the open state of the valve 13 _{m + 1} . After that, flushing water begins to flow into the degasser 17. According to the output signal of opening the valve 13 _{m + 1} , coming from the output of the block 34 for turning on the electric drives to the input of the control unit 35, the information about the opening of the valve 13 _{m + 1} is generated in the control unit 35, which is transmitted in the form of serial code signals to the second input-output device the controller-calculator 29 _{n + 2} via the channel KU3 during the information exchange between the control unit 35 and the controller-calculator 29 _{n + 2} . When the degasser 17 is filled with flushing water, the level indicator 18 _{1 is} triggered, and at its output a signal is generated, which is fed through the block 34 for switching on the electric drives to the input of the control unit 35. According to this signal, a signal is generated in the control unit 35, according to which power is supplied to the control circuit of the electric drive of the valve 13 _{m + 1} to close through the output of the device 34 for switching on electric drives to close it, when the valve 13 _{m + 1} reaches the closing position, a signal is generated at the outputs of its electric drive , which is fed to the input of the block 34 for turning on the electric drives and provides at its output the cessation of power supply to the control circuit of the electric drive of the valve 13 _{m + 1} and the formation at the output of the block 34 of a signal corresponding to the closed state of the valve 13 _{m + 1} . After that, flushing water will no longer flow into the degasser 17. Signals about the state of the valve 13 _m + i and the level indicator 18 _{1 of the} degasser 17 are fed through the block 34 for switching on the electric drives to the input of the control unit 35. The control unit 35 then generates information about the closure of the valve 13 _{m + 1} and the triggering of the level indicator 18 _{1 of the} degasser 17, which from the output of the input-output device of the control unit 35 through the channel KU3 is sent in the form of serial code signals to the second input-output device of the controller -calculator 29 _{n + 2} . Upon receipt of information about filling the degasser 17 with flushing water in the controller-calculator 29 _{n + 2} , a command is generated for the control unit 36 to open the valves 19 ₁ , 19 ₂ . When this command is received at the outputs of block 36, signals for opening the valves 19 ₁ , 19 ₂ are generated. After the valves 19 ₁ , 19 _{2 are} opened, signals are generated at their outputs, which are fed to the input of the control unit 36. According to these signals, information about the opening of valves 19 ₁ , 19 ₂ is generated in the control unit 36, which from the output of its input-output device is transmitted in the form of serial code signals to the second input-output device of the controller-calculator 29 _{n + 2} via channel KU3 during information exchange between the control unit 36 and the controller-calculator 29 _{n + 2} . After opening the valves 19 ₁ , 19 ₂ , the filling of the measuring chambers 20 ₁ , 20 _{2 with} flushing medium from the degasser 17 begins, which continues until the filling level indicators 18 ₂ , 18 _{3 of the} measuring chambers 20 ₁ , 20 _{2 are} triggered. When the level indicators 18 ₂ , 18 ₃ fill the measuring chambers 20 ₁ , 20 ₂ at their outputs, signals are generated that are fed through the block 34 for switching on electric drives to the input of the control unit 35, according to which information is generated in the control unit 35, which is generated through its input device -output in the form of serial code signals is transmitted to the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 in the course of information exchange between the control unit 35 and the controller-calculator 29 _{n + 2} . In the controller-calculator 29 _{n + 2,} when the level indicator 18 _{2 of the} measuring chamber 20 _{1 is} triggered, a command is generated for the control unit 36 to open valves 21 ₁ and 21 ₃ , and when the level indicator 18 _{3 of the} measuring chamber 20 ₂ is triggered, a command is generated for the unit 36 about opening valves 21 ₂ and 21 ₃ . These commands in the course of information exchange between the control unit 36 and the controller-calculator 29 _{n + 2} through the second input-output device of the controller-calculator 29 _{n + 2} and the channel KU3 are sent in the form of serial code signals to the input-output device of the control unit 36. Upon receipt of the command to open the valves 21 ₁ , 21 ₃ at the output of the control unit 36, signals for opening the valves 21 ₁ , 21 ₃ are generated, and upon receipt of the command to open the valves 21 ₂ and 21 _{3 , a signal for opening the valves 21 2} and 21 is generated at the output of the control unit 36 ₃ . After the valves 21 ₁ , 21 ₂ , 21 _{3 are} opened, the flushing medium from the degasser 17 and the measuring chambers 20 ₁ , 20 _{2 is} drained into the special drainage system, and _{signals are generated at the outputs of the valves 21 1} , 21 ₂ , 21 ₃ that are fed to the input of the control unit 36 ... According to these signals, information about the opening of valves 21 ₁ , 21 ₂ and 21 ₃ is generated in the control unit 36, which is transmitted through its input-output device in the form of serial code signals to the second input-output device of the controller-calculator 29 _{n + 2} via channel KU3 in the course of information exchange between the control unit 36 and the controller-calculator 29 _{n + 2} . After the expiry of the Top ₃ time for emptying the degasser 17 and chambers 20 ₁ and 20 ₂ through the open valves 19 ₁ , 19 ₂ , 21 ₁ , 21 ₂ and 21 ₃ in the controller-calculator 29 _{n + 2} , a command is generated for the control unit 36 to close the valves 19 ₁ , 19 ₂ , 21 ₁ , 21 ₂ and 21 ₃ , which from the output of the second input / output device in the form of serial code signals is transmitted via channel KU3 to the input / output device of the control unit 36, on this command, the signals for closing the valves 19 are generated at the output of the control unit 36 ₁ , 19 ₂ , 21 ₁ , 21 ₂ and 21 ₃ . After closing valves 19 ₁ , 19 ₂ , 21 ₁ , 21 ₂ and 21 ₃ . At their outputs, closing signals are generated, according to which information about closing valves 19 ₁ , 19 ₂ , 21 ₁ , 21 ₂ and 21 ₃ is generated in the control unit 36, which is sent from the output of its input-output device in the form of serial code signals through the channel KU3 to the second input-output device of the controller-calculator 29 _{n + 2} . Upon receipt of information about the closure of valves 19 ₁ , 19 ₂ , 21 ₁ , 21 ₂ and 21 ₃ after emptying the degasser 17 and measuring chambers 20 ₁ and 20 ₂ from the flushing medium during the information exchange between the control unit 36 and the controller-calculator 29 _{n + 2} , the controller-calculator 29 _{n + 2 is} transferred to the spectrometric measurement mode from one of the empty measuring chambers 20 ₁ or 20 ₂ according to the previously described algorithm. The results of spectrometric measurements from one of the empty measuring chambers 20 ₁ or 20 ₂ through the first input-output device of the controller-calculator 29 _{n + 2} via channel IK2 are transmitted to the unit 27 ₂ for collecting primary processing and analysis of information. From these results, the background radiation from the measuring chamber 20 ₁ or 20 _{2 is} determined. When the background radiation from the measuring chamber 20 ₁ or 20 _{2 is} exceeded, the flushing of the degasser 17 and the measuring chambers 20 ₁ , 20 _{2 is} repeated. If the background radiation from the measuring chamber 20 ₁ or 20 _{2 is not} exceeded, the flushing of the degasser 17 and the measuring chambers 20 ₁ , 20 _{2 is} completed.

If, based on the results of measuring the intensity of ionizing radiation of the primary coolant sample, the working measuring chamber 20 ₂ and the measurement duration Ti ₂ are determined, which provide optimal conditions for spectrometric measurements, then the computer controller 29 _{n + 2 is} switched on to the mode of spectrometric measurements of ionizing radiation in the coolant sample of the first circuit in the measuring chamber 20 ₂ for the time Ti ₂ immediately after the end of the measurements of the intensity of ionizing radiation of the sample of the first circuit coolant in the measuring chamber 20 ₂ . After the end of the spectrometric measurements, information about the measurement results is transmitted through the first input-output device of the controller-calculator 29 _{n + 2} through the junction box 28 _{n + 2} via the IK2 channel to the block 27 ₂ for collecting primary processing and analysis of information. In block 27 ₂ for collecting primary processing and analysis of information, the radionuclide composition of the primary coolant sample is determined and the absence or presence of dissolved fission products of nuclear fuel atoms in it and, accordingly, the presence or absence of fuel elements with leaky cladding is assessed. After the end of the time Ti _{2 of} the spectrometric measurements in the controller-calculator 29 _{n + 2} , a command is generated for the control unit 36 to open the valves 19 ₂ , 21 ₂ , 21 ₄ to empty the degasser 17 and the measuring chamber 20 ₂ into the container for collecting controlled leaks, which is transmitted to the control unit 36 through the second input-output device of the controller-calculator 29 _{n + 2} via the channel KU3 in the course of information exchange between the unit 36 and the controller-calculator 29 _{n + 2} and provides the formation at the output of the control unit 36 of signals about opening the valves 19 ₂ , 21 ₂ , 21 ₄ . After the valves 19 ₂ , 21 ₂ , 21 ₄ are opened, signals are generated at their outputs, which are fed to the input of the control unit 36. According to these signals, information about the opening of valves 19 ₂ , 21 ₂ , 21 ₄ is generated in the control unit 36, which in the form of signals of a sequential code from the output of its input-output device is sent via channel KU3 to the second input-output device of the controller-calculator 29 _{n + 2} in the course of information exchange between the block 36 and the controller-calculator 29 _{n + 2} . After receiving information about the opening of the valves 19 ₂ , 21 ₂ , 21 _{4, the} controller-calculator 29 _{n + 2} starts counting the preset time Top _{2 for} emptying the degasser 17 and the measuring chamber 20 ₂ into the collection tank of controlled leaks. After the end of the Top ₂ time for emptying the degasser 17 and the measuring chamber 20 ₂ into the collection tank of controlled leaks in the controller-calculator 29 _{n + 2} , a command is generated for the control unit 36 to close the valves 19 ₂ , 21 ₂ , 21 ₄ , which ensures the closure of the valves 19 ₂ , 21 ₂ , 21 ₄ according to the previously described algorithm. After the valves 19 ₂ , 21 ₂ , 21 _{4 are} closed, signals are generated at their outputs, which are fed to the input of the control unit 36. According to these signals, the control unit 36 generates information about closing the valves 19 ₂ , 21 ₂ , 21 ₄ , which is transmitted in the form of serial code signals through its input-output device via channel KU3 to the second input-output device of the controller-calculator 29 _{n + 2} in the course of information exchange between the block 36 and the controller-calculator 29 _{n + 2} . After receiving information about closing the valves 19 ₂ , 21 ₂ , 21 ₄ in the controller-calculator 29 _{n + 2} , a command is generated for the control unit 35 to open the valve 13 _{m + 1} to ensure the flushing of the degasser 17 and the measuring chamber 20 ₂ , which is carried out according to the described earlier to the algorithm. Controlled leaks collected in the collection tank return to the primary circuit through the primary circuit make-up system. The flushing media discharged into the special sewerage system after flushing the degasser and the measuring chambers are sent for storage and processing as liquid radioactive waste.

At the end of the spectrometric measurements of the primary coolant from the point of the process circuit closest to the effect of the fuel elements from the computer 26 of the operator's console 25, in accordance with the periodic monitoring regulations, the software supply of coolant samples from m points of the process circuit to the degasser and the measuring chambers of the unit _{is programmed through pipelines 12 1} - 12 _m 7 _{n + 2} detections. Information about the sequence of supplying periodically monitored media to the input of the _{detection unit 7 n + 2 is} sent from the computer 26 of the operator's console 25 in the form of commands transmitted over the local computer network for the unit 27 ₂ for collecting preliminary processing and analysis of information. In block 27 ₂ , a command is then formed, which is transmitted in the form of signals of a serial code via channel IK2 to the first input-output device of the controller-calculator 29 _{n + 2} about opening one of the valves 13 ₁ - 13 _m , for example, 13 ₂ , providing coolant of the primary circuit from the next point of the technological chain according to the regulations of periodic control to the measuring chambers of the 7 _{n + 2} detection unit. In the controller-calculator 29 _{n + 2} , a command is then generated for the control unit 35, which from the output of the second input-output device of the controller-calculator 29 _{n + 2} in the form of serial code signals via the channel KU3 is fed to the input-output device of the control unit 35. At the output of the control unit 35, a control signal is generated to open the valve 13 ₂ , which are fed to the input of the block 34 for turning on the electric drives, providing a supply voltage from the output of the block 34 to the input of the electric drive of the valve 13 ₂ to open it. When the valve 13 ₂ reaches the opening state, a signal is generated at its output, according to which the power supply to the valve 13 ₂ is stopped in the block 34 for turning on the electric drives and an output signal is generated, which, through the block 34 for turning on the electric drives, enters the input of the control unit 35, at the input device - the output of which is then formed information about the open state of the valve 13 ₂ . Information about the open state of the valve 13 ₂ enters the controller-calculator 29 _{n + 2} through its second input-output device via the channel KU3 in the form of serial code signals during information exchange between the control unit 35 and the controller-calculator 29 _{n + 2} , and with the output of its first input-output device through the junction box 28 _{n + 2} via the information channel IK2, this information is fed to the input of the block 27 ₂ for collecting primary processing and analysis of information during the information exchange of block 27 ₂ with the controller-calculator 29 _{n + 2} . At the output of the block 27 ₂ for collecting preliminary processing and analysis of information, information is then generated for the controller-calculator 29 _{n + 2} about carrying out spectrometric measurements of the medium received for control through the valve 13 ₂ , which is fed through the IK2 channel through the box 28 _{n + 2} to the first input-output device of the controller-calculator 29 _{n + 2} . Upon receipt of this command, the controller-calculator 29 _{n + 2} provides spectrometric measurements of the controlled medium flowing through the pipeline 13 ₂ and the transfer of the measurement results to the block 27 ₂ for collecting and processing information according to the previously described algorithm. Similarly, spectrometric control of the primary coolant flowing from other points of the technological chain to the 7 _{n + 2} detection unit is provided.

During normal operation of the system, the vacuum value created by the gas blowers 9 ₁ , 9 ₂ and controlled by the sensor 11 does not exceed the specified minimum and maximum values, while the delivery of controlled media to the _{detection units 7 1} - 7 _{n + 1 is} provided with a specified flow rate, and measurements activities of controlled air environments and isotopes of radioactive gases are produced with known errors. When the vacuum value controlled by the sensor 11 is reached, after turning on the gas blower 9 ₁ , less than the minimum set value from the computer 26 of the operator's console 25, a command is issued to automatically turn on the reserve (ATS), which is transmitted via the local computer network LAN to the block 27 ₁ for collecting preliminary processing and analysis information. From unit 27 ₁ , the ATS command is transmitted via the control channel KU1 through the junction box 28 _{n + 4} to the control unit 31. After receiving the information on the block 31 with the command ATS, the block 31 is transferred to the operating mode, in which, when the vacuum controlled by the sensor 11 is equal to the minimum set value, the signals are automatically generated at the output of the control unit 31, which, using the device 32 _2, turn on the electric drives, turn on electric drive to open the valve 10 ₂ and turn on the electric drive of the backup gas blower 9 ₂ , and using the device 32 _{1 for} turning on the electric drives, turn on the electric drive of the valve 10 ₁ to close it and turn off the electric drive of the gas blower 9 ₁ . At the outputs of the devices 32i and 32 _{2 for} turning on the electric drives after closing the valve 10 ₁ and turning off the gas blower 9 ₁ , opening the valve 10 ₂ and turning on the blower 92, corresponding signals are generated, which are fed to the inputs of the control unit 31. In the control unit 31, information about the state of the valves 10 ₁ , 10 ₂ and the gas blowers 9 ₁ and 9 ₂ is generated, which is sent from its input-output device in the form of serial code signals via the control channel KU1 to the input of the pre-processing collection _{unit 27 1 and} analysis of information. From the output of block 27 ₁ information about the state of valves 10 ₁ , 10 ₂ and gas blowers 9 ₁ , 9 _{2 is} sent via the LAN to the computer 26 of the operator's console 25. Vacuum less than the minimum set value at the inlet of the gas blower is set or when the load on the blower is increased from for deviations of its operation modes from the optimal ones, which appear, as a rule, due to an increase in the temperature of the working elements of the gas blower during its long-term continuous operation, or when the supply voltage of the blower is interrupted. Since the backup gas blower 9 ₂ has been in the off state for a long time and its working bodies do not have an elevated temperature, the vacuum controlled by the sensor 11 will increase to a normal value, and, thus, the conditions will remain that provide measurements of the activity of continuously and periodically monitored air media. and the activity of radionuclides in periodically monitored air environments with a known error. Since the gas blower 9 ₁ has retained its operability and after a time sufficient to cool its working bodies or to restore its supply voltage, it will be ready for operation, then to ensure increased reliability after switching to work with a backup gas blower 9 ₂ , the following is performed by the operator from the computer 26 of the operator's panel 25, the main gas blower 9 ₂ is assigned, and the gas blower 9 ₁ is assigned as backup. When the vacuum value controlled by the sensor 11 is reached, after the gas blower 9 _{2 is} turned on, less than the minimum set value, an ATS command is generated in the computer 26 of the operator's console 25, which is transmitted via the LAN to the unit 27 ₁ for collecting preliminary processing and analysis of information. From block 27 ₁ for collecting preliminary processing and analysis of information, the ATS command is transmitted over the control channel KU1 to block 31 through its input-output device. When information is received by the control unit 31 with the command to automatically turn on the reserve, the unit 31 is switched to an operation mode in which, when the vacuum controlled by the sensor 11 is equal to the minimum set value, the signals are automatically generated at the output of the control unit 31, according to which signals are generated at the outputs of the device 32 ₁ switching on the electric drives, supply voltages appear, supplied to the control circuits of the electric drives of the valve 10 ₁ and the gas blower 9 ₁ , which ensure the opening of the valve 10 ₁ and the switching on of the backup gas blower 9 ₁ , and at the outputs of the device 32 _{2 for} turning on the electric drives, the supply voltage will appear on the control circuits of the electric drive of the valve 10 ₂ , which ensures the closing of the valve 10 ₂ , and the supply voltage of the electric drive of the gas blower 9 ₂ is turned off, ensuring the shutdown of the main gas blower 9 ₂ . At the outputs of the devices 32 ₁ and 32 _2, after the valve 10 _{2 is} closed and the gas blower 9 _{2 is} turned off, the valve 101 is opened and the gas blower 9 _{1 is} turned on, corresponding signals are generated, which are fed to the inputs of the control unit 31. In block 31, information about the state of valves 10 ₁ , 10 ₂ and gas blowers 9 ₁ and 9 ₂ is generated, which is transmitted from its input-output device in the form of serial code signals via the control channel KU1 to the input of block 27 ₁ for collecting preliminary processing and analysis information. From the output of block 27 ₁ information about the state of valves 10 ₁ , 10 ₂ and gas blowers 9 ₁ and 9 _{2 is} sent via the LAN to the computer 26 of the operator's console 25. Then, using the computer 26 of the operator's console 25, the gas blower 9 ₁ is assigned the main one, and the further control algorithm is repeated ... When an overload appears in the power circuits of the electric drives of the operating gas blower 9 ₁ or 9 ₂ (exceeding the current consumption of the nominal value or with significant increases in the supply voltage of the gas blowers), the device is triggered - either the thermal relay of the contactor or the circuit breaker of the device 32 ₁ or 32 ₂ , through which voltage is supplied power supply to the electric drive of the working gas blower, after which the supply voltage to the electric drive of the working gas blower stops 9 ₁ or 9 ₂ . This leads to the shutdown of the gas blower 9 ₁ or 9 ₂ and, accordingly, to a decrease to zero of the vacuum value measured by the sensor 11, which leads to the automatic switching on of the backup gas blower and switching off the main one according to the algorithm described above. The vacuum is greater than the maximum set value at the inlet of the gas blower 9 ₁ , as a rule, when most of the filters 5 ₁ - 5 _{n + 4 are} completely clogged. When the computer 26 of the operator's console 25 displays data on the vacuum value at the inlet of the gas blower 9 ₁ , which is greater than the maximum specified vacuum, information is displayed on its screen, warning that in order to ensure measurements of the activity of controlled media and radionuclides with a specified error, it is necessary to replace the filtering materials in the filters 5 ₁ - 5 _{n + 4} . Shut-off valves 8 ₁ - 8 _{n + 3} are designed to ensure the cessation of flows in the supply pipelines 1 ₁ - 1 _{n + 4} and 2 ₁ - 2 _{k + p + 1} when performing maintenance and repair work on the corresponding units 7 ₁ - 7 _{n + 3} detections and flow meters 6 ₁ - 6 _{n + 3} , as well as when replacing filter materials in the corresponding filters 5 ₁ - 5 _{n + 4} .

Thus, the presence of channels for continuous monitoring of air activity in the rooms of the controlled area, ventilation systems of nuclear power plants and spectrometric channels for periodic monitoring of the activity of radionuclides of gases as air in the rooms of the controlled area, ventilation systems of atomic power plants, as well as those removed from the primary coolant sample in the degasser and channels for monitoring the activity of radionuclides in the primary coolant after removing gases from it, provides the possibility of both radiation monitoring of air in the rooms of the controlled area and ventilation systems, as well as diagnostics of the condition of the cladding of fuel elements with the identification of the moment of the beginning of the appearance of shell defects with the required degree of reliability.

Designed by FSUE “NITI im. A.P. Alexandrov ", Sosnovy Bor, Leningrad region. control units BU4K01, BU4K02, BU4K10 and power units BSBU4K, BSBU4K01. The spectrometric monitor “MARS-010-SGG ". As a spectrometric channel for measuring the activity of radionuclides in the primary coolant, including a spectrometric detection unit with two measuring chambers, six remotely controlled valves, a BU4K02 control unit, a BU4K01 electric drive control unit, a BSBU4K electric drive switching unit and a computer controller with the functions of a spectrometer, a multichannel analyzer Intensity meter use the spectrometric monitor "MARS-012-SUG". Control units BU4K01, BU4K02, BU4K10 and power units BSBU4K01, BSBU4K and spectrometric monitors MARS-010-SGG and MARS-012-SUG are supplied for radiation monitoring systems of NPP FSUE NITI im. A.P. Alexandrov ".

Claims (1)

A remote radiation monitoring system, which includes an operator panel with an autonomous uninterruptible power supply unit, a personal computer with information display facilities and two monitoring and control subsystems, while the first subsystem contains supply pipelines of continuously monitored air media with manually controlled shut-off and control valves, filters, flow meters, detection units, outlet pipelines of detecting units with manually controlled shut-off valves, connected at the outlet by a common pipeline of detecting units, pipelines of the first periodically monitored media with remotely controlled shut-off valves, connected at the outlet by a common pipeline for supply through series-connected shut-off and control valve with manually controlled, a filter and a flow meter to a common detection unit, the outlet pipeline of which is also connected to a common pipeline of the detection units through a manually controlled shut-off valve, p distribution boxes, controllers-calculators, including microcomputers, power supplies for detecting units, devices for converting the detector signal and input-output devices for information via an information channel, one for each detecting unit, the first and second gas blowers, the first and second shut-off valves of gas blowers with electric drives, a sensor vacuum at the inlet of gas blowers, a control unit for gas blowers, the first and second devices for switching on electric drives of gas blowers and shut-off valves for gas blowers with electric drives, a control unit for valves of the first periodically controlled air environments, the first block for collecting, primary processing and analysis of information with an autonomous uninterruptible power supply information channel collection, primary analysis and processing of information on the activity of continuously monitored air environments and periodically monitored air environments, and through the first control channel - control of remotely controlled shut-off valves by the number of the first periodically controlled air media, gas blowers, shut-off valves of gas blowers with electric drives and collection of information on the state of remotely controlled shut-off valves of the first periodically controlled air media, gas blowers, shut-off valves for gas blowers with electric drives and on the vacuum value, personal computer of the operator's console, the first and second blocks collection, primary processing and analysis of information are included in the local computer network, the detection units are connected to the power supplies and information inputs of the corresponding controllers-calculators, the first block of collection, primary processing and analysis of information is connected via the first information channel to the controllers-computers of the first subsystem through their distribution boxes, and through the first information control channel is connected to the valve control unit of the first periodically controlled air environments and to the gas blower control unit through their junction boxes, the second unit fails pa, primary processing and analysis of information is connected via the second information channel with the controllers-calculators of the second subsystem through their junction boxes, a vacuum sensor and the inputs of the first and second gas blowers are connected to the common pipeline of the detecting units through the first and second shut-off valves with electric drives, respectively, the outputs of the first and the second gas blowers are combined to remove the controlled air media pumped through them, the outputs of the first and second stop valves with electric drives of the gas blowers are connected to the inputs of the first and second devices for switching on the electric drives, respectively, and their control circuits and control circuits of the first and second blowers are connected to the control outputs of the first and second of devices for switching on electric drives, respectively, the outputs of the gas blower control unit are connected to the inputs of the first and second devices for switching on electric drives, and the inputs of the control unit for gas blowers are connected to the outputs of the first and second devices. of electric drives, the information output of the vacuum sensor is connected to the input of the gas blower control unit, and the supply input of the vacuum sensor is connected to the output of the power supply of the gas blower control unit, the control circuits of the remotely controlled shut-off valves for the supply of the first periodically controlled media are connected to the outputs of the valve control unit of the first periodically controlled air media , and the outputs of the remotely controlled shut-off valves of the first periodically monitored media are connected to the inputs of the valve control unit of the first periodically controlled air environments, characterized in that the second subsystem includes a spectrometric channel for periodic monitoring of the activity of radionuclides in the primary coolant, a spectrometric channel for measuring the activity of radionuclides of the second periodically monitored air media, pipelines for supplying the primary coolant from m points of the technological chain to spectrometric control with shut-off valves Panels with electric drives and throttle valves, united by a common pipeline, in which a safety valve and a heat exchanger are connected in series; detection, in which a manually controlled shut-off valve is installed, pipelines of the second periodically controlled air media with remotely controlled shut-off valves, combined at the entrance of the spectrometric channel for measuring the activity of radionuclides of the second periodically monitored air media by a pipeline, which includes a series-connected shut-off and control valve with manual control , filter and flow meter, output pipeline of the spectrometric channel of periodic control, which is connected to a common pipe through a manually operated shut-off valve a line of detecting units, a control unit for valves of the second periodically monitored air media, a spectrometric channel for measuring the activity of radionuclides in the primary coolant contains a degasser with a fill level indicator, a spectrometric detection unit that includes a spectrometric detector, two measuring chambers with fill level indicators and a spectrometric detector protection unit with two collimators of measuring chambers, a calibration radiation source and an electric drive, a computer controller including a microcomputer, a power supply for a spectrometric detector, a detector signal conversion device with the functions of a spectrometer, a multichannel pulse analyzer and an ionizing radiation intensity meter, and two input-output devices for information via an information channel, a control unit electric drives with a block for switching on electric drives, shut-off valves and a protection block, remotely controlled valves for measuring chambers, p The first control unit for the valves of the measuring chambers, the spectrometric channel for monitoring the second periodically monitored air media contains a common spectrometric detection unit, which includes a spectrometric detector, three measuring chambers, a protection unit and six remotely controlled valves of the measuring chambers, a second control unit for valves of the measuring chambers, a computer controller, including a microcomputer, a power supply for a spectrometric detector, a detector signal conversion device with the functions of a spectrometer, a multichannel pulse analyzer and an intensity meter, two input-output devices for information via an information channel, each measuring chamber of the spectrometric activity measurement channel is equipped with two remotely controlled shut-off valves, the first of which provides supply of controlled, and the second - purge air, control of the valves of the measuring chambers of the spectrometric detection unit is carried out using the second control unit for the valves of the measuring chambers, the degasser and the measuring chambers of the detection unit of the spectrometric channel for monitoring the coolant of the first circuit are equipped with outlets for protection against overfilling, the degasser is also equipped with an outlet for removing gases, which is connected through the first additional remotely controlled shutoff valve to the supply pipeline of the second periodically monitored air media to the common spectrometric detection unit, and through the second additional remotely controlled shut-off valve is connected to the common pipeline of the detection units, the outputs of the measuring chambers of the common spectrometric detection unit for periodic monitoring of air environments are connected by a common pipeline and through a manually controlled shut-off valve are connected to the common pipeline of the detection units , and their inputs are connected to the supply pipeline of periodically controlled air media and to the supply pipeline of purge air through the dist controllable valves of the measuring chambers, the outputs of the valve control unit for the second periodically monitored air media are connected to the inputs of remotely controlled shut-off valves of the second periodically controlled air media and to the inputs of two additional pipeline valves for removing gases from the degasser, and its inputs are connected to the outputs of these remotely controlled shut-off valves valves, the controller-calculator of the spectrometric channel for measuring the activity of radionuclides in the coolant of the first circuit and the controller-calculator of the spectrometric channel for measuring the activity of radionuclides of the second periodically monitored air media are connected through the first devices of serial input-output of information and their junction boxes with a device for serial input-output of information of the second collection unit primary processing and analysis of information by the second information channel, and the valve control unit of the second periodically controlled media is connected to using its device for serial input-output of information through its junction box with the second block for collecting primary processing and analysis of information by the second control channel, respectively, the controller-calculator of the spectrometric channel for measuring the activity of radionuclides in the coolant of the first circuit is connected with the first block using the second device for serial input-output of information control of the valves of the measuring chambers of the radionuclides of the coolant of the first circuit and the control unit of the electric drives through their devices of sequential input-output of information by the third information control channel; the control unit of the valves of the measuring chambers of the spectrometric detector for measuring the activity of radionuclides of the second periodic The systems of controlled air environments through its device for sequential input-output of information by the fourth information control channel, the outputs of the level indicators of the degasser and measuring chambers and the outputs of valves with electric drives for supplying the primary coolant and flushing medium to the degasser and the electric drive of the protection unit are connected to the inputs of the electric drive switching unit, the outputs of the electric drive switching unit are connected to the inputs of the electric drive control unit, the outputs of which are connected to the inputs of the electric drives switching unit, the control outputs of the electric drives switching unit are connected to the control circuits of the electric drives of the protection unit and the shut-off valves for feeding the sample of the primary circuit coolant and the flushing medium to the degasser, the inputs of remotely controlled shut-off the valves of the measuring chambers for feeding into the measuring chambers and draining from the measuring chambers the coolant of the first circuit and flushing water are connected to the outputs of the first block. by the valves of the measuring chambers, and their outputs are connected to the inputs of the first control unit of the valves of the measuring chambers, the power input of the spectrometric detection unit of the channel for measuring the activity of radionuclides of the primary coolant is connected to the output of the power supply of the controller-calculator of the spectrometric channel for measuring the activity of radionuclides of the primary coolant, and the information output the detecting unit is connected to the input of the detector signal conversion device with the functions of a spectrometer, a multichannel pulse analyzer and an ionizing radiation intensity meter of this controller-calculator, the control of the radionuclide composition of gases dissolved in the primary coolant is carried out by extracting gases from the degasser when pouring the primary coolant through the degasser into tank for collecting leaks using the valves of the measuring chambers of the primary coolant and directing them for spectrometric control using the first auxiliary remotely controlled valve and valves of the measuring chambers of the second periodically monitored air media through the measuring chambers of the spectrometric channel for measuring the activity of radionuclides of the second periodically monitored air media.

Images