Marine pressurized water reactor fuel element damage monitoring method and device

Abstract

The invention relates to a marine pressurized water reactor fuel element damage monitoring method and device. Opening a first group of electromagnetic valves, measuring a sample after the loop coolant is purified by a first detection device, and sending measured first gamma energy spectrum data for monitoring the damage of the marine pressurized water reactor fuel element to a gamma energy spectrum processing device; when the first detection device sends out an alarm signal, the second group of electromagnetic valves are opened, the second detection device measures the sample before the loop coolant is purified, and measured second gamma energy spectrum data for monitoring the damage of the marine pressurized water reactor fuel element are sent to the gamma energy spectrum processing device; and the gamma energy spectrum processing device performs analysis and processing according to the received first gamma energy spectrum data and the second gamma energy spectrum data, and judges whether the fuel element cladding for monitoring the damage of the marine pressurized water reactor fuel element is damaged or not. Whether the fuel element cladding is damaged or not can be judged; based on an existing finite resolution detector, the false alarm rate of marine pressurized water reactor fuel element cladding damage monitoring is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of process radiation monitoring for marine pressurized water reactors, and more specifically, to a method and device for monitoring damage of fuel elements of marine pressurized water reactors. Background Art

[0002] Pressurized water reactors have thousands or even tens of thousands of fuel elements. It is inevitable that there are manufacturing process defects in the fuel element cladding when it leaves the factory; in addition, they work for a long time under many harsh conditions such as high temperature, high pressure, high radiation, corrosion, scouring, vibration, thermal stress, etc., and there is a possibility of damage. Once the fuel element cladding is damaged, a large amount of fission products will enter the primary coolant and quickly fill the entire circuit, which not only seriously deteriorates the water quality of the primary coolant, but also greatly increases the radioactivity level of the primary coolant. On the one hand, it will affect the safety of the reactor operation, and on the other hand, it will bring greater radiation safety risks to the operating and maintenance personnel. Therefore, continuous monitoring of the integrity of the fuel element cladding is one of the important measures that are indispensable to ensure the normal operation of the reactor and the radiation safety of personnel.

[0003] In practice, marine PWRs generally use the method of measuring the radioactivity level of the primary coolant to monitor the state of the fuel element cladding. When the radioactivity level of the primary coolant increases significantly, it is suspected that the fuel element cladding is damaged. However, in marine PWRs, due to the frequent changes in reactor power, it is difficult for the activated corrosion products with a slightly longer half-life in the primary coolant to reach an equilibrium state in a short period of time. Even if the fuel element cladding is not damaged, the radioactivity level of the primary coolant will change with the change of reactor power; the radiation detection device used to measure the primary coolant will also be corroded and contaminated by the primary coolant after long-term operation, resulting in an increase in the measurement background; in addition, the equipment currently used in the industry for measuring the radioactivity of the primary coolant is generally a scintillator detector, which has a low energy resolution (generally no more than 3%), can identify fewer typical fission product nuclides (generally 2-3) and has a large error. The above factors lead to a large number of false alarms in the current monitoring of the damage of the fuel element cladding of marine PWRs. Summary of the invention

[0004] The embodiments of the present application provide a method and device for monitoring damage of a marine pressurized water reactor fuel element. In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0005] In a first aspect, the present application provides a method for monitoring damage of a marine pressurized water reactor fuel element, the method comprising:

[0006] The first group of electromagnetic valves is opened, and the first detection device measures the sample after the loop coolant is purified, and the measured first gamma spectrum data for monitoring the damage of the marine pressurized water reactor fuel element is sent to the gamma spectrum processing device;

[0007] When the first detection device sends out an alarm signal, the second set of electromagnetic valves is opened, the second detection device measures the sample before the loop coolant is purified, and sends the measured second gamma spectrum data for monitoring the damage of the marine pressurized water reactor fuel element to the gamma spectrum processing device;

[0008] The gamma spectrum processing device analyzes and processes the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

[0009] According to a preferred embodiment, when the first detection device sends out an alarm signal, the method includes:

[0010] The first detecting device sends out the alarm signal when the gamma radioactivity level of the first gamma energy spectrum data is measured to be abnormally increased.

[0011] According to a preferred embodiment, a NaI detector or a LaBr3 detector is used as the first detection device and the second detection device; a Co-60 radiation source is built into the first detection device and the second detection device as a peak-stabilizing built-in source.

[0012] According to a preferred embodiment, the gamma spectrum processing device analyzes and processes the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged, including:

[0013] The gamma spectrum processing device performs energy peak area processing according to the received first gamma spectrum data to obtain first gamma spectrum analysis information for damage monitoring of the marine pressurized water reactor fuel element;

[0014] The gamma spectrum processing device performs energy peak area processing according to the received second gamma spectrum data to obtain second gamma spectrum analysis information for monitoring damage of the marine pressurized water reactor fuel element;

[0015] The gamma spectrum processing device compares the first gamma spectrum analysis information with the second gamma spectrum analysis information to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

[0016] In a second aspect, the present application provides a marine pressurized water reactor fuel element damage monitoring device, the device comprising:

[0017] The first energy spectrum data acquisition module is used to open the first set of solenoid valves, and the first detection device measures the sample after the loop coolant is purified, and sends the measured first gamma energy spectrum data for monitoring the damage of marine pressurized water reactor fuel elements to the gamma energy spectrum processing device;

[0018] A second energy spectrum data acquisition module is used to open the second set of solenoid valves when the first detection device sends out an alarm signal, so that the second detection device measures the sample before the loop coolant is purified, and sends the measured second gamma energy spectrum data for the damage monitoring of the marine pressurized water reactor fuel element to the gamma energy spectrum processing device;

[0019] The energy spectrum data analysis module is used for the gamma spectrum processing device to analyze and process the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

[0020] According to a preferred embodiment, the second energy spectrum data acquisition module is specifically used to:

[0021] The first detecting device sends out the alarm signal when the gamma radioactivity level of the first gamma energy spectrum data is measured to be abnormally increased.

[0022] According to a preferred embodiment, a NaI detector or a LaBr3 detector is used as the first detection device and the second detection device; a Co-60 radiation source is built into the first detection device and the second detection device as a peak-stabilizing built-in source.

[0023] According to a preferred embodiment, the energy spectrum data analysis module is specifically used for:

[0024] The gamma spectrum processing device performs energy peak area processing according to the received first gamma spectrum data to obtain first gamma spectrum analysis information for damage monitoring of the marine pressurized water reactor fuel element;

[0025] The gamma spectrum processing device performs energy peak area processing according to the received second gamma spectrum data to obtain second gamma spectrum analysis information for monitoring damage of the marine pressurized water reactor fuel element;

[0026] The gamma spectrum processing device compares the first gamma spectrum analysis information with the second gamma spectrum analysis information to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged. In a third aspect, the present application provides a computer storage medium, which stores multiple instructions, and the instructions are suitable for being loaded by a processor and executing the above method steps.

[0027] In a fourth aspect, the present application provides a terminal, which may include: a processor and a memory; wherein the memory stores a computer program, and the computer program is suitable for being loaded by the processor and executing the above-mentioned method steps.

[0028] The technical solution provided by this application may have the following beneficial effects:

[0029] In the present application, the marine pressurized water reactor fuel element damage monitoring method is as follows: the first group of solenoid valves are opened, the first detection device measures the sample after the loop coolant is purified, and the measured first γ spectrum data of the marine pressurized water reactor fuel element damage monitoring is sent to the γ spectrum processing device; when the first detection device sends an alarm signal, the second group of solenoid valves are opened, the second detection device measures the sample before the loop coolant is purified, and the measured second γ spectrum data of the marine pressurized water reactor fuel element damage monitoring is sent to the γ spectrum processing device; the γ spectrum processing device analyzes and processes the received first γ spectrum data and the second γ spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged. The present application can determine whether the fuel element cladding is damaged; based on the currently existing limited resolution detector, the false alarm rate of the marine pressurized water reactor fuel element cladding damage monitoring is reduced.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0032] Figure 1 It is a flow chart of a method for monitoring damage of a marine pressurized water reactor fuel element provided in an embodiment of the present application;

[0033] Figure 2 It is a schematic diagram of the fuel element cladding damage monitoring principle of a marine pressurized water reactor fuel element damage monitoring method provided in an embodiment of the present application;

[0034] Figure 3 It is a structural schematic diagram of a marine pressurized water reactor fuel element damage monitoring device provided in an embodiment of the present application;

[0035] Figure 4 It is a structural diagram of a terminal provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 1. a first electromagnetic valve, 2. a second electromagnetic valve, 3. a third electromagnetic valve, 4. a fourth electromagnetic valve, 5. a second detection device, 6. a first detection device, 7. a gamma spectrum processing device;

[0038] 10000, a first energy spectrum data acquisition module, 20000, a second energy spectrum data acquisition module, 30000, an energy spectrum data analysis module;

[0039] 1001. Processor, 1002. Communication bus, 1003. User interface, 1004. Network interface, 1005. Memory. DETAILED DESCRIPTION

[0040] The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them.

[0041] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples of systems and methods consistent with some aspects of the present invention as detailed in the attached claims.

[0043] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previously associated objects are in an "or" relationship.

[0044] The following will be combined with the attached Figure 1 and 2 , a method for monitoring damage of a marine pressurized water reactor fuel element provided in an embodiment of the present application is introduced in detail.

[0045] See also Figure 1 and 2 The method of the embodiment of the present application may include the following steps:

[0046] The present application discloses a method for monitoring damage of a marine pressurized water reactor fuel element, which is a method for monitoring damage of a marine pressurized water reactor fuel element based on a dual sampling port γ spectrum partition comparison of a finite energy resolution detector. Figure 2 As shown, a sampling monitoring schematic diagram of the monitoring method provided by the present application is described. The two sampling ports take samples from the reactor primary circuit coolant before and after purification, respectively, and enter the second detection device 5 and the first detection device 6 for measurement after passing through the first solenoid valve 1 and the second solenoid valve 2, and then are discharged through the third solenoid valve 3 and the fourth solenoid valve 4. The measured gamma spectrum data is transmitted to the gamma spectrum processing device 7 via a cable for processing and display of the gamma spectrum data.

[0047] The method described in the present application, the corresponding monitoring system includes: a sampling pipeline, which introduces the coolant of the reactor's primary circuit into the detection device for measurement; the detection device, including a first detection device 6 and a second detection device 5, is used to measure the radioactivity level of the primary circuit coolant; the solenoid valve assembly, including a first group of solenoid valves and a second group of solenoid valves, is used to control the sampling pipeline; the gamma spectrum processing device 7 is used to collect, process and display the gamma spectrum data in the primary circuit coolant. Under normal conditions, the coolant after purification of the reactor's primary circuit is continuously monitored to reduce the contamination of the detection device by the measured liquid, i.e., the sample; when the total gamma radioactivity level of the coolant after purification of the primary circuit is abnormally increased, the monitoring of the coolant sample before purification of the primary circuit is enabled, and the gamma spectrum data measured by the first detection device 6 and the second detection device 5 are analyzed, processed and compared to give a judgment on whether the fuel element cladding is damaged; the entire system is based on the current detector with low resolution, and adopts the method of dual sampling port gamma spectrum partition comparison and analysis to effectively improve the accuracy of monitoring the damage of the fuel element cladding of marine pressurized water reactors and reduce the false alarm rate. The details are as follows:

[0048] S100, the first group of solenoid valves is opened, the first detection device 6 measures the sample after the loop coolant is purified, and the measured first gamma spectrum data for monitoring the damage of marine pressurized water reactor fuel elements is sent to the gamma spectrum processing device 7; the first group of solenoid valves includes the second solenoid valve 2 and the fourth solenoid valve 4.

[0049] In the embodiment of the present application, during normal operation, the second solenoid valve 2 and the fourth solenoid valve 4 are open, the first detector 6 operates normally, and a sample of the purified primary coolant is taken for measurement. The first detector 6 converts the radioactive signal of the primary coolant into an electrical signal, which is transmitted via a cable to the gamma spectrum processing device 7. The first gamma spectrum data is displayed by the radioactive signal and the electrical signal.

[0050] S200, when the first detection device 6 sends out an alarm signal, the second group of solenoid valves is opened, the second detection device 5 measures the sample before the loop coolant is purified, and the measured second gamma spectrum data for monitoring the damage of the marine pressurized water reactor fuel element is sent to the gamma spectrum processing device 7; wherein, when the first detection device 6 sends out an alarm signal, it includes: when the first detection device 6 measures an abnormal increase in the gamma radioactivity level of the first gamma spectrum data, the alarm signal is sent out.

[0051] In the embodiment of the present application, the second group of solenoid valves includes: a first solenoid valve 1 and a third solenoid valve 3. When the first detection device 6 sends an alarm signal, the first solenoid valve 1 and the third solenoid valve 3 are opened at the same time, the second detection device 5 is enabled, and a sample of the first circuit coolant before purification is taken for measurement, and the second gamma spectrum data is measured.

[0052] The first detection device 6 and the second detection device 5 contain an analog or digital spectrum acquisition device for acquiring the first γ spectrum data and the second γ spectrum data. A NaI detector, a LaBr3 detector or other detectors are used as the first detection device 6 and the second detection device 5; a Co-60 radiation source is built into the first detection device 6 and the second detection device 5 as a peak-stabilizing built-in source, and the peak-stabilizing built-in source is used to generate the peak area corresponding to the 1.17MeV energy of Co-60 in the first γ spectrum data and the peak area corresponding to the 1.17MeV energy of Co-60 in the second γ spectrum data; the peak-stabilizing built-in source is inside the first detection device 6 and the second detection device 5, so that the first γ spectrum data and the second γ spectrum data acquired by the first detection device 6 and the second detection device 5 are stable. Other pipeline accessories such as flow meters and valves can also be added to the sampling pipeline system.

[0053] S300, the gamma spectrum processing device 7 analyzes and processes the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged, including:

[0054] The gamma spectrum processing device 7 performs energy peak area processing according to the received first gamma spectrum data to obtain the first gamma spectrum analysis information for monitoring the damage of the marine pressurized water reactor fuel element;

[0055] The gamma spectrum processing device 7 performs energy peak area processing according to the received second gamma spectrum data to obtain the second gamma spectrum analysis information for monitoring the damage of the marine pressurized water reactor fuel element;

[0056] The gamma spectrum processing device 7 compares the first gamma spectrum analysis information with the second gamma spectrum analysis information to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

[0057] In the embodiment of the present application, the first gamma spectrum data measured by the first detection device 6 is named as gamma spectrum 1; the peak area corresponding to the 1.17 MeV energy of Co-60 in gamma spectrum 1 is named as gamma spectrum 1-1. The second gamma spectrum data measured by the second detection device 5 is named as gamma spectrum 2; the peak area corresponding to the 1.17 MeV energy of Co-60 in gamma spectrum 2 is named as gamma spectrum 2-1, and the peak area of ​​gamma spectrum 2-1 is multiplied by a correction coefficient k so that its peak area is the same as the peak area of ​​gamma spectrum 1-1, so that the determined correction coefficient k is used for the following operations. In the embodiment of the present application, the energy spectrum after deducting the 511keV energy peak area from the γ energy spectrum 1 is named as the γ energy spectrum 1-2, the energy spectrum after deducting the 511keV energy peak area from the γ energy spectrum 2 is named as the γ energy spectrum 2-2, the γ energy spectrum with energy of 450keV to 800keV in the γ energy spectrum 2-2 is multiplied by the correction coefficient k, and the corrected γ energy spectrum is named as the γ energy spectrum 2-3; the γ energy spectrum with energy of 450keV to 800keV in the γ energy spectrum 1-2 is named as the γ energy spectrum 1-3; the γ energy spectrum 2-3 is compared with the γ energy spectrum 1-3, when the γ energy spectrum 2-3 is greater than 10 times of the γ energy spectrum 1-3, it is considered that the fuel element cladding is damaged; when the γ energy spectrum 2-3 does not exceed 10 times of the γ energy spectrum 1-3, it is considered that the fuel element cladding is not damaged. At this time, the first γ energy spectrum analysis information can be the γ energy spectrum 1-3, and the second γ energy spectrum analysis information can be the γ energy spectrum 2-3.

[0058] The present application is based on a method for monitoring the cladding damage of a marine pressurized water reactor fuel element provided by an existing finite resolution detector. The method is a method for reducing the false alarm rate of monitoring the cladding damage of a marine pressurized water reactor fuel element. The present application opens a first group of solenoid valves, and a first detection device 6 measures a sample after purification of the loop coolant, and sends the measured first γ spectrum data of the marine pressurized water reactor fuel element damage monitoring to a γ spectrum processing device 7; when the first detection device 6 sends an alarm signal, the second group of solenoid valves is opened, and the second detection device 5 measures the sample before purification of the loop coolant, and sends the measured second γ spectrum data of the marine pressurized water reactor fuel element damage monitoring to the γ spectrum processing device 7; the γ spectrum processing device 7 analyzes and processes the received first γ spectrum data and the second γ spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged. The present application selects samples from the coolant after purification of the reactor's primary circuit for measurement during normal operation. It has been verified through experiments that the amount of corrosive radioactive substances is significantly reduced after purification, which can reduce the radioactive contamination of the sampling container of the fuel element cladding damage detection device; further, by significantly increasing the total gamma and comparing the gamma energy spectrum data before and after the purification of the primary circuit to determine whether the fuel element cladding is damaged, the frequency of false alarms can be significantly reduced.

[0059] The following are embodiments of the apparatus of the present invention, which can be used to implement the embodiments of the method of the present invention. For details not disclosed in the embodiments of the apparatus of the present invention, please refer to the embodiments of the method of the present invention.

[0060] See also Figure 3 , which shows a schematic structural diagram of a marine pressurized water reactor fuel element damage monitoring device provided by an exemplary embodiment of the present invention. The device comprises: a first energy spectrum data acquisition module 10000, a second energy spectrum data acquisition module 20000 and an energy spectrum data analysis module 30000.

[0061] The first energy spectrum data acquisition module 10000 is used to open the first set of solenoid valves, and the first detection device measures the sample after the loop coolant is purified, and sends the measured first gamma energy spectrum data for damage monitoring of marine pressurized water reactor fuel elements to the gamma energy spectrum processing device;

[0062] The second energy spectrum data acquisition module 20000 is used to open the second set of solenoid valves when the first detection device sends out an alarm signal, so that the second detection device measures the sample before the loop coolant is purified, and sends the measured second gamma energy spectrum data for the damage monitoring of the marine pressurized water reactor fuel element to the gamma energy spectrum processing device;

[0063] The energy spectrum data analysis module 30000 is used for the gamma spectrum processing device to analyze and process the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

[0064] According to a preferred embodiment, the second energy spectrum data acquisition module 20000 is specifically used for:

[0065] The first detecting device sends out the alarm signal when the gamma radioactivity level of the first gamma energy spectrum data is measured to be abnormally increased.

[0066] According to a preferred embodiment, a NaI detector or a LaBr3 detector is used as the first detection device and the second detection device; a Co-60 radiation source is built into the first detection device and the second detection device as a peak-stabilizing built-in source.

[0067] According to a preferred embodiment, the energy spectrum data analysis module 30000 is specifically used for:

[0068] The gamma spectrum processing device performs energy peak area processing according to the received first gamma spectrum data to obtain first gamma spectrum analysis information for damage monitoring of the marine pressurized water reactor fuel element;

[0069] The gamma spectrum processing device performs energy peak area processing according to the received second gamma spectrum data to obtain second gamma spectrum analysis information for monitoring damage of the marine pressurized water reactor fuel element;

[0070] The gamma spectrum processing device compares the first gamma spectrum analysis information with the second gamma spectrum analysis information to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

[0071] It should be noted that the marine pressurized water reactor fuel element damage monitoring device provided in the above embodiment only uses the division of the above functional modules as an example when executing the marine pressurized water reactor fuel element damage monitoring method. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the marine pressurized water reactor fuel element damage monitoring device provided in the above embodiment and the marine pressurized water reactor fuel element damage monitoring method embodiment belong to the same concept, and the embodiment and implementation process thereof are detailed in the method embodiment, which will not be repeated here.

[0072] In the present application, the marine pressurized water reactor fuel element damage monitoring device opens the first set of solenoid valves, the first detection device measures the sample after the loop coolant is purified, and sends the measured first γ spectrum data of the marine pressurized water reactor fuel element damage monitoring to the γ spectrum processing device; when the first detection device sends an alarm signal, the second set of solenoid valves is opened, the second detection device measures the sample before the loop coolant is purified, and sends the measured second γ spectrum data of the marine pressurized water reactor fuel element damage monitoring to the γ spectrum processing device; the γ spectrum processing device analyzes and processes the received first γ spectrum data and the second γ spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged. The present application can determine whether the fuel element cladding is damaged; based on the currently existing limited resolution detector, the false alarm rate of the marine pressurized water reactor fuel element cladding damage monitoring is reduced.

[0073] The present invention also provides a computer-readable medium on which program instructions are stored. When the program instructions are executed by a processor, the marine pressurized water reactor fuel element damage monitoring method provided by the above-mentioned various method embodiments is implemented.

[0074] The present invention also provides a computer program product containing instructions, which, when executed on a computer, enables the computer to execute the methods for monitoring damage of fuel elements of a marine pressurized water reactor of the above-mentioned various method embodiments.

[0075] See also Figure 4 , which is a schematic diagram of the structure of a terminal according to an embodiment of the present application. The terminal may include: at least one processor 1001, at least one network interface 1004, a user interface 1003, a memory 1005, and at least one communication bus 1002.

[0076] The communication bus 1002 is used to realize the connection and communication between these components.

[0077] The user interface 1003 may include a display screen (Display) and a camera (Camera), and the optional user interface 1003 may also include a standard wired interface and a wireless interface.

[0078] The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0079] Among them, the processor 1001 may include one or more processing cores. The processor 1001 uses various interfaces and lines to connect various parts in the entire terminal, and executes various functions of the terminal and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 1005, and calling data stored in the memory 1005. Optionally, the processor 1001 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 1001 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 1001, and it can be implemented separately through a chip.

[0080] Among them, the memory 1005 may include a random access memory (Random Access Memory, RAM) and may also include a read-only memory (Read-Only Memory). Optionally, the memory 1005 includes a non-transitory computer-readable storage medium. The memory 1005 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 1005 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 1005 may optionally be at least one storage device located away from the aforementioned processor 1001. As Figure 4 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a marine pressurized water reactor fuel element damage monitoring application.

[0081] exist Figure 4In the terminal shown, the user interface 1003 is mainly used to provide an input interface for the user and obtain the data input by the user; and the processor 1001 can be used to call the marine pressurized water reactor fuel element damage monitoring application stored in the memory 1005, and specifically perform the following operations:

[0082] The first group of electromagnetic valves is opened, and the first detection device measures the sample after the loop coolant is purified, and the measured first gamma spectrum data for monitoring the damage of the marine pressurized water reactor fuel element is sent to the gamma spectrum processing device;

[0083] When the first detection device sends out an alarm signal, the second group of solenoid valves is opened, the second detection device measures the sample before the loop coolant is purified, and the measured second gamma spectrum data for monitoring the damage of the marine pressurized water reactor fuel element is sent to the gamma spectrum processing device; a NaI detector or a LaBr3 detector is used as the first detection device and the second detection device; a Co-60 radiation source is built into the first detection device and the second detection device as a peak-stabilizing built-in source;

[0084] The gamma spectrum processing device analyzes and processes the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

[0085] In one embodiment, when the first detection device sends an alarm signal, the processor 1001 specifically performs the following operations:

[0086] The first detecting device sends out the alarm signal when the gamma radioactivity level of the first gamma energy spectrum data is measured to be abnormally increased.

[0087] In one embodiment, when the processor 1001 executes the gamma spectrum processing device to analyze and process the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged, the processor 1001 specifically performs the following operations:

[0088] The gamma spectrum processing device performs energy peak area processing according to the received first gamma spectrum data to obtain first gamma spectrum analysis information for damage monitoring of the marine pressurized water reactor fuel element;

[0089] The gamma spectrum processing device performs energy peak area processing according to the received second gamma spectrum data to obtain second gamma spectrum analysis information for monitoring damage of the marine pressurized water reactor fuel element;

[0090] The gamma spectrum processing device compares the first gamma spectrum analysis information with the second gamma spectrum analysis information to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

[0091] In the present application, the method and device for monitoring damage of marine pressurized water reactor fuel elements, the first set of solenoid valves are opened, the first detection device measures the sample after the loop coolant is purified, and the measured first γ spectrum data of marine pressurized water reactor fuel element damage monitoring is sent to the γ spectrum processing device; when the first detection device sends an alarm signal, the second set of solenoid valves are opened, the second detection device measures the sample before the loop coolant is purified, and the measured second γ spectrum data of marine pressurized water reactor fuel element damage monitoring is sent to the γ spectrum processing device; the γ spectrum processing device analyzes and processes the received first γ spectrum data and the second γ spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged. The present application can determine whether the fuel element cladding is damaged; based on the currently existing limited resolution detector, the false alarm rate of marine pressurized water reactor fuel element cladding damage monitoring is reduced.

[0092] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0093] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A method for monitoring damage of a marine pressurized water reactor fuel element, characterized in that: The following steps are involved: The first group of electromagnetic valves is opened, and the first detection device measures the sample after the loop coolant is purified, and the measured first gamma spectrum data for monitoring the damage of the marine pressurized water reactor fuel element is sent to the gamma spectrum processing device; When the first detection device sends out an alarm signal, the second set of electromagnetic valves is opened, the second detection device measures the sample before the loop coolant is purified, and sends the measured second gamma spectrum data for monitoring the damage of the marine pressurized water reactor fuel element to the gamma spectrum processing device; The gamma spectrum processing device analyzes and processes the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

2. The method for monitoring damage of marine pressurized water reactor fuel elements according to claim 1, characterized in that: When the first detection device sends out an alarm signal, the method comprises: The first detecting device sends out the alarm signal when the gamma radioactivity level of the first gamma energy spectrum data is measured to be abnormally increased.

3. The method for monitoring damage of marine pressurized water reactor fuel elements according to claim 1, characterized in that: A NaI detector or a LaBr3 detector is used as the first detection device and the second detection device; a Co-60 radiation source is built into the first detection device and the second detection device as a peak-stabilizing built-in source.

4. The method for monitoring damage of marine pressurized water reactor fuel elements according to claim 1, characterized in that: The gamma spectrum processing device analyzes and processes the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged, including: The gamma spectrum processing device performs energy peak area processing according to the received first gamma spectrum data to obtain first gamma spectrum analysis information for damage monitoring of the marine pressurized water reactor fuel element; The gamma spectrum processing device performs energy peak area processing according to the received second gamma spectrum data to obtain second gamma spectrum analysis information for monitoring damage of the marine pressurized water reactor fuel element; The gamma spectrum processing device compares the first gamma spectrum analysis information with the second gamma spectrum analysis information to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

5. A marine pressurized water reactor fuel element damage monitoring device, characterized in that: include: The first energy spectrum data acquisition module is used to open the first set of solenoid valves, and the first detection device measures the sample after the loop coolant is purified, and sends the measured first gamma energy spectrum data for monitoring the damage of marine pressurized water reactor fuel elements to the gamma energy spectrum processing device; A second energy spectrum data acquisition module is used to open the second set of solenoid valves when the first detection device sends out an alarm signal, so that the second detection device measures the sample before the loop coolant is purified, and sends the measured second gamma energy spectrum data for the damage monitoring of the marine pressurized water reactor fuel element to the gamma energy spectrum processing device; The energy spectrum data analysis module is used for the gamma spectrum processing device to analyze and process the received first gamma spectrum data and the second gamma spectrum data to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

6. The marine pressurized water reactor fuel element damage monitoring device according to claim 5, characterized in that: The second energy spectrum data acquisition module is specifically used to: The first detecting device sends out the alarm signal when the gamma radioactivity level of the first gamma energy spectrum data is measured to be abnormally increased.

7. The marine pressurized water reactor fuel element damage monitoring device according to claim 5, characterized in that: A NaI detector or a LaBr3 detector is used as the first detection device and the second detection device; a Co-60 radiation source is built into the first detection device and the second detection device as a peak-stabilizing built-in source.

8. The marine pressurized water reactor fuel element damage monitoring device according to claim 5, characterized in that: The energy spectrum data analysis module is specifically used for: The gamma spectrum processing device performs energy peak area processing according to the received first gamma spectrum data to obtain first gamma spectrum analysis information for damage monitoring of the marine pressurized water reactor fuel element; The gamma spectrum processing device performs energy peak area processing according to the received second gamma spectrum data to obtain second gamma spectrum analysis information for monitoring damage of the marine pressurized water reactor fuel element; The gamma spectrum processing device compares the first gamma spectrum analysis information with the second gamma spectrum analysis information to determine whether the fuel element cladding of the marine pressurized water reactor fuel element damage monitoring is damaged.

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