A method and computer device for preventing human error in periodic testing of a nuclear power plant

Abstract

This application provides a method and computer device for preventing human error during periodic testing of nuclear power plants. A switching button and a test start button are added to the second-level human-machine interface of the DCS (Distributed Control System). The method for preventing human error during periodic testing of nuclear power plants includes: receiving a start command generated after the user clicks the test start button on the second-level DCS interface; switching the control loop from the "original path" to the "assigned path to start the test" according to the start command, and executing the periodic test. This application addresses the technical problem of the highest risk of human error and the greatest consumption of human resources during the forced operation of signals by instrumentation and control professionals in the execution of periodic tests by adding corresponding switching and test start buttons to the second level of the DCS.

Description

Technical Field

[0001] This application belongs to the technical field of periodic testing in nuclear power plants, and specifically relates to a method and computer device for preventing human error during periodic testing in nuclear power plants. Background Technology

[0002] The purpose of periodic testing at nuclear power plants is to verify whether the plant is operating within the limits and conditions specified in the operating technical specifications, maintain the reliability of the system equipment, and ensure that all faulty components or equipment with performance below standard are not hidden for extended periods. During periodic testing at various power plants, while verifying equipment performance, unexpected events may occur due to equipment failures, human error, and other factors. Among these, the signal-mandated operations performed by the instrumentation and control professionals during periodic testing carry the highest risk of human error. Signal-mandated operations, which involve temporary changes to signals at the DCS (Distributed Control System) level, require a high level of skill and adherence to operational procedures from the personnel performing these operations. Performing such operations on-site not only consumes manpower and reduces testing efficiency but also carries a significant risk of human error. Summary of the Invention

[0003] In view of this, this application aims to provide a method and computer device for preventing human error during periodic testing of nuclear power plants. By adding corresponding switching buttons and test start buttons to the second layer of the DCS, it solves the technical problem that the forced operation of signals by the instrumentation and control professionals during the execution of periodic tests carries the highest risk of human error and consumes the most human resources.

[0004] The first aspect of this application provides a method for preventing human error during periodic testing of nuclear power plants. The DCS second-level human-machine interface is equipped with a switching button and a test start button. The method for preventing human error during periodic testing of nuclear power plants includes: receiving a start command generated after the user clicks the test start button on the DCS second-level human-machine interface; switching the control loop from the "original path" to the "assigned path start test" according to the start command, and executing the periodic test.

[0005] In one specific embodiment of this application, a test end button is further added to the DCS second-level human-machine interface. Based on the start command, the control loop is switched from the "original path" to the "assigned path start test," and a periodic test is executed. Afterwards, the method for preventing human error during the periodic test of this nuclear power plant further includes: receiving a stop command from the user clicking the test end button on the DCS second-level human-machine interface; and ending the periodic test according to the stop command.

[0006] In one specific embodiment of this application, a test button is further added to the DCS second-level human-machine interface. The system receives a start command generated after the user clicks the test start button on the DCS second-level human-machine interface. Previously, the method for preventing human error during regular testing at this nuclear power plant also included: receiving a test command generated after the user clicks the test button on the DCS second-level human-machine interface; and entering an interface containing a test start button and a test end button according to the test command.

[0007] In one specific embodiment of this application, a test authorization button is further added to the DCS second-level human-machine interface. This button receives the start command generated after the user clicks the test start button on the DCS second-level human-machine interface. Previously, the method for preventing human error during regular tests at this nuclear power plant also included receiving the authorization command generated after the user clicks the test authorization button on the DCS second-level human-machine interface.

[0008] According to the start command, the control loop is switched from the "original path" to the "assigned path start test" and periodic tests are performed, including: according to the authorization command and the start command, the control loop is switched from the "original path" to the "assigned path start test" and periodic tests are performed.

[0009] In one specific embodiment of this application, a test interlock button is further added to the DCS second-level human-machine interface. Based on the start command, the control loop is switched from the "original path" to the "assigned path start test," and a periodic test is performed. Subsequently, the method for preventing human error during the periodic tests of this nuclear power plant also includes: receiving a test interlock command generated after the user clicks the test interlock button on the DCS second-level human-machine interface; and executing the test interlock according to the test interlock command.

[0010] In one specific embodiment of this application, a protection button is further added to the DCS second-level human-machine interface. The system receives a start command generated after the user clicks the test start button on the DCS second-level human-machine interface. Previously, the method for preventing human error during regular tests at this nuclear power plant also included: receiving a protection command generated after the user clicks the protection button on the DCS second-level human-machine interface; and entering an interface containing a test authorization button and a test interlock button based on the protection command.

[0011] In one specific embodiment of this application, the protection button and the test button are located on the same interface. The test start button, test end button, test authorization button, and test lockout button are also located on the same interface.

[0012] A second aspect of this application provides a computer apparatus including a processor and a memory. The processor is used to execute a method for preventing human error during periodic nuclear power plant tests according to the first aspect of this application. The memory is used to store executable instructions for the processor.

[0013] A third aspect of this application provides a computer-readable storage medium having executable instructions stored thereon. When executed by a processor, the executable instructions implement the method for preventing human error during periodic nuclear power plant tests according to the first aspect of this application.

[0014] The fourth aspect of this application provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements a method for preventing human error during periodic testing of a nuclear power plant according to the first aspect of this application.

[0015] The beneficial effects of this technical solution are as follows: By adding corresponding switching buttons and test start buttons to the second layer of the DCS, the user can quickly switch the fixed configuration logic by clicking the switching button, realizing the control loop switching selection. The user can execute periodic tests by clicking the test start button, thereby changing the method of signal simulation through assignment paths. Using fixed assignment logic to execute periodic tests reduces the forced signal operation of the first layer of the DCS, enabling periodic test execution without temporary forced operations in the first layer of the DCS. This reduces the number of temporary forced operations during periodic tests and reduces human intervention, thus eliminating or reducing the risk of human error caused by manual forced operations in the first layer of the DCS, and improving test safety. Furthermore, this method for preventing human error in nuclear power plant periodic tests is convenient and quick to operate, reducing key and error-prone steps in periodic tests, significantly reducing test execution time, and can be completed by a single operator, reducing manpower consumption, avoiding excessive manpower waste, and improving the efficiency of periodic test execution. In addition, the configuration content of the test scheme can be implemented online without affecting the existing system functional layout and current process control process, and this method for preventing human error in nuclear power plant periodic tests has the value of being promoted for application in other power plants. Attached Figure Description

[0016] Figure 1 The diagram shown is a flowchart illustrating a method for preventing human error during periodic testing of a nuclear power plant, according to an embodiment of this application.

[0017] Figure 2 The diagram shown is an overall flow control diagram of a method for preventing human error during periodic testing of a nuclear power plant, provided in an embodiment of this application.

[0018] Figure 3 The diagram shown is a schematic of a DCS two-layer operation screen provided in an embodiment of this application.

[0019] Figure 4 As shown Figure 3 The diagram shows the operation screen after clicking the button.

[0020] In the diagram: ① Test Authorization; ② Test Interlock; ③ Test Start; ④ Test End; ⑤ Protection Button; ⑥ Test Button. Clicking button ⑤ will display buttons ① and ②; clicking button ⑥ will display buttons ③ and ④. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] At least one embodiment of this application provides a method for preventing human error during periodic testing in nuclear power plants, wherein a switching button and a test start button are added to the second-level human-machine interface of the DCS. (Reference) Figure 1 The human error prevention methods that the nuclear power plant regularly tests include the following steps.

[0023] S10: Receive the start command generated after the user clicks the test start button on the DCS second-level human-machine interface.

[0024] S20: According to the start command, switch the control loop from "original path" to "assignment path start test" and perform periodic tests.

[0025] According to the technical solution provided in this application, by adding corresponding switching buttons and test start buttons to the second layer of the DCS, the user can quickly switch the fixed configuration logic by clicking the corresponding button, realizing the control loop switching selection. The user can execute periodic tests by clicking the test start button, thereby changing the method of signal simulation through assignment paths. Using fixed assignment logic to execute periodic tests reduces the forced signal operation of the first layer of the DCS, enabling periodic test execution without human intervention in temporary forced operations at the first layer of the DCS. This reduces the number of temporary forced operations during periodic tests and minimizes human intervention, thus eliminating or reducing the risk of human error caused by manual forced operations at the first layer of the DCS, and improving test safety. Furthermore, this method for preventing human error in nuclear power plant periodic tests is convenient and quick to operate, reducing key and error-prone steps in periodic tests, significantly reducing test execution time, and can be completed by a single operator, reducing human resource consumption, avoiding excessive manpower waste, and improving the efficiency of nuclear power plant periodic test execution. In addition, the configuration content of the test plan can be implemented online without affecting the existing system functional layout and current process control process, and this method for preventing human error in nuclear power plant periodic tests has the value of being promoted to other power plants in the same industry.

[0026] In at least one embodiment of this application, a test end button is further provided on the DCS second-level human-machine interface. Following S20, the method for preventing human error during the periodic testing of this nuclear power plant also includes S30 and S40.

[0027] S30: Receive the end command from the user clicking the end button on the DCS layer 2 human-machine interface.

[0028] S40: End the periodic test according to the end command.

[0029] In the above embodiments, by adding a test end button to the DCS second-layer human-machine interface, users can control the periodic test to end according to actual needs by clicking the test end button.

[0030] In at least one embodiment of this application, a protection button is further provided on the second-level human-machine interface of the DCS. Prior to S10, the human error prevention methods periodically tested by the nuclear power plant also include S1 and S2.

[0031] S1: Receives protection commands generated after the user clicks the protection button on the DCS Layer 2 HMI interface.

[0032] S2: Enter the interface containing the test authorization button and the test lockout button according to the protection command.

[0033] For example, Figure 3 The fifth button is the safety button, labeled 002KG. Click it. Figure 3 Enter after pressing the middle protection button Figure 4 interface, Figure 4 ① is the test authorization button, labeled RELEASE ON; ② is the test lockout button, labeled RELEASE OFF.

[0034] In at least one embodiment of this application, a test authorization button is further added to the DCS second-level human-machine interface. Prior to S10, the method for preventing human error during the periodic testing of this nuclear power plant also includes S3. S21 is a specific implementation of S20.

[0035] S3: Receive the authorization command generated after the user clicks the test authorization button on the DCS layer 2 human-machine interface.

[0036] S21: Based on the authorization instruction and start instruction, switch the control loop from "original path" to "assignment path start test" and perform periodic tests.

[0037] For example, refer to Figures 2 to 4The test plan requires that, when executing, the user first obtains login permission on the DCS Layer 2 human-machine interface screen to enter the test operation interface, executes the "test authorization" command, and then executes the "test start" command. At this time, if the AND logic of "test authorization" and "test start" is satisfied, the control loop is switched from the "original path" to the assignment path to start the test. The periodic test will then begin to be executed. After confirming that the test has been completed, the "test end" operation is performed to clear the test status and switch the control loop back to the "original path".

[0038] In this embodiment of the application, a test authorization button is added to provide dual protection for the switching of the control loop, avoiding errors caused by a single operator's mistake.

[0039] In at least one embodiment of this application, a test button is further provided on the DCS second-layer human-machine interface. Clicking the test button will enter an interface containing a test start button and a test end button. Steps S4 and S5 are also included before S10.

[0040] S4: Receives test instructions generated after the user clicks the test button on the DCS Layer 2 HMI interface.

[0041] S5: Enter the interface containing the test start button and test end button according to the test instructions.

[0042] For example, Figure 3 The sixth button is the test button, labeled 003KG. Clicking the test button will take you to... Figure 4 The interface, Figure 4 ③ is the test start button, labeled TEST ON; ④ is the test end button, labeled TEST OFF.

[0043] Taking the water tank level logic control test as an example, this test verifies whether the water level sensor and alarm in the 001 storage tank of the equipment's cooling water system are functioning correctly. This test requires manual forced closure of the condenser isolation valve protection signal during normal full-load operation of the unit to prevent malfunctions. The improved test scheme adds a test button to the second-level human-machine interface of the DCS, and then adds test start and test end buttons, allowing the operator to complete all logic operations of the test instrument control from the human-machine interface.

[0044] In at least one embodiment of this application, a test interlock button is further provided on the second-level human-machine interface of the DCS. Following S20 above, the method for preventing human error during the periodic testing of this nuclear power plant also includes S6 and S7.

[0045] S6: Receives the test interlock command generated after the user clicks the test interlock button on the DCS second-level human-machine interface.

[0046] S7: Execute the test lockout according to the test lockout command.

[0047] In some embodiments, the protection button and the test button are located on the same interface. The test start button, test end button, test authorization button, and test lockout button are located on the same interface.

[0048] After the periodic test is completed, the user can click the test lock button and the test end button in sequence to end the test.

[0049] In the above embodiments, for the confirmed periodic test items, based on the current design functions of the DCS, the periodic test control loop configuration logic is added, a general test scheme is designed using the DCS network link, and the switching of the control loop is placed on the authorized operator's interface.

[0050] The following is an example illustrating the operation process of the method for preventing human error during the periodic testing of this nuclear power plant, using a specific embodiment.

[0051] During the test, first obtain login permissions on the DCS Layer 2 HMI screen to enter the test operation interface, and then click... Figure 3 Button number 5 pops up on the right side of the screen. Figure 4 In the operation menu, click the ① Test Authorization button, then click the ③ Test Start button. The command will switch the control loop to "Assignment Path Start Test". The periodic test will then begin. After confirming that the test has been completed, click the ② Test Lockout button, then click the ④ Test End button to perform the "Test Lockout" and "Test End" operations, clear the test status and switch the control loop to "Original Path".

[0052] At least one embodiment of this application also provides a computer device including a processor and a memory. The processor is used to execute a method for preventing human error during periodic testing of a nuclear power plant, as provided in any of the above embodiments of this application. The memory is used to store executable instructions of the processor, such as application programs. There can be one or more processors. The application programs stored in the memory can include one or more modules, each corresponding to a set of instructions. Furthermore, the processor is configured to execute instructions to perform the calculation method of the aforementioned method for preventing human error during periodic testing of a nuclear power plant.

[0053] The computer device may also include a power supply component configured for power management, a wired or wireless network interface configured to connect the computer device to a network, and an input / output (I / O) interface. The computer device can operate on an operating system stored in memory, such as Windows Server. TM Mac OSX TM Unix TM LinuxTM FreeBSD TM Or similar.

[0054] At least one embodiment of this application also provides a computer-readable storage medium storing executable instructions for a computer thereon. When executed by a processor, the executable instructions implement a method for preventing human error during periodic testing of a nuclear power plant, as provided in any of the above embodiments of this application.

[0055] A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the computer device, enables the computer device to perform the human error prevention method for the periodic testing of the nuclear power plant. The human error prevention method for the periodic testing of the nuclear power plant is executed by a proxy program.

[0056] Those skilled in the art will recognize that the algorithmic steps of the various examples described in conjunction with the embodiments disclosed in this application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0057] At least one embodiment of this application also provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements a method for preventing human error during periodic testing of a nuclear power plant provided in any of the above embodiments of this application.

[0058] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a computer program product. This computer program product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method for preventing human error during the periodic testing of nuclear power plants according to the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program verification codes, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0059] It should be noted that the combination of the technical features in the embodiments of this application is not limited to the combination methods described in the embodiments of this application or the combination methods described in specific embodiments. All technical features described in this application can be freely combined or combined in any way, unless they contradict each other.

[0060] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a" and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the term "comprising" only indicates that it includes the explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0061] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for preventing human error during periodic testing at a nuclear power plant, characterized in that, The DCS Level 2 human-machine interface is equipped with a protection button, a test start button, a test end button, a test authorization button, and a test interlock button. Human error prevention methods for periodic tests in nuclear power plants include: Receive protection commands generated after the user clicks the protection button on the DCS Layer 2 HMI interface; Enter the interface containing the test authorization button and the test lockout button according to the protection command; Receive the authorization command generated after the user clicks the test authorization button on the DCS layer 2 human-machine interface; Receive the start command generated after the user clicks the test start button on the DCS layer 2 human-machine interface; Based on the authorization and start instructions, the control loop is switched from the "original path" to the "assignment path start test", and the fixed assignment logic is used to execute periodic tests; After confirming that the test has been completed, receive the test lockout command generated by the user clicking the test lockout button on the DCS Layer 2 human-machine interface. Execute the test lockout according to the test lockout command; Receive the end command from the user clicking the end button on the DCS layer 2 human-machine interface; end the periodic test according to the end command, clear the test status and switch the control loop from "start test by assignment path" to "original path".

2. The method for preventing human error during periodic testing of a nuclear power plant according to claim 1, characterized in that, A test button has also been added to the DCS second-level human-machine interface, which receives the start command generated after the user clicks the test start button on the DCS second-level human-machine interface. Previously, the human error prevention methods for regular tests in nuclear power plants also included: Receive test commands generated after the user clicks the test button on the DCS Layer 2 HMI interface; Follow the test instructions to enter the interface containing the test start button and the test end button.

3. The method for preventing human error during periodic testing of a nuclear power plant according to claim 1, characterized in that, If both protection and test buttons are added to the DCS second-level human-machine interface, the protection and test buttons are located on the same interface, and the test start button, test end button, test authorization button, and test lockout button are located on the same interface.

4. A computer device, characterized in that, include: A processor for executing a method for preventing human error during periodic testing of a nuclear power plant, as described in any one of claims 1 to 3; as well as Memory for storing the executable instructions of the processor.

5. A computer-readable storage medium having executable instructions stored thereon, characterized in that, When the executable instructions are executed by the processor, they implement a method for preventing human error during periodic testing of a nuclear power plant, as described in any one of claims 1 to 3.

6. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements a method for preventing human error during periodic testing of a nuclear power plant, as described in any one of claims 1 to 3.

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