JPH0727056B2 - Instrumentation control system maintenance support system for nuclear power plants - Google Patents

Description

The present invention relates to a supervisory control system for a plant, and more particularly to an instrumentation control system maintenance support system for a nuclear power plant.

[Conventional technology]

As described in Japanese Patent Laid-Open No. 55-122199, the conventional plant monitoring and control system focuses on the operation and monitoring during normal operation, and the way of a total maintenance system to cope with abnormal situations, for example, the placement of man-machine interfaces. The purpose of each interface and the contents of output information to each interface are not taken into consideration, and the application after being centralized by focusing only on the “centralization” of centralized monitoring is not considered. It was

[Problems to be solved by the invention]

In the above-mentioned conventional technology, the information necessary for maintenance is displayed and output on the operator console in the main control room in the form of being mixed with the operation information.Although the troubleshooting manual is described for each device, Since it takes a lot of effort to search for the problem troubleshooting for a failure, preventive maintenance was difficult in plant maintenance work, and there was a large possibility of human error during maintenance work. .

The purpose of the present invention is to quickly and centrally monitor the failure / abnormality of each instrumentation control device, and automatically prepare the maintenance information in a form separated from the information for the operator, and output it in the dedicated interface.
It is to provide an instrumentation control system maintenance support system for nuclear power plants that can be displayed and utilized.

[Means for solving problems]

The above purpose is for a centralized monitoring device that inputs and stores diagnostic result information of each instrumentation control device of a nuclear power plant, plant operation data, alarm information, and diagnostic information such as past plant data, and for operators who have the centralized monitoring device. It is equipped with a central operator console that outputs information, a maintenance section dedicated console that outputs dedicated information for the maintenance department, and a portable maintenance support tool that outputs necessary information for performing maintenance of individual instrumentation control devices. The fault data with the specified data format transmitted from the instrumentation control device to the central monitoring device selects and separates appropriate information from the database in the central monitoring device, and separates it from the information for operators. This is achieved by an instrumentation control system maintenance support system for a nuclear power plant, which is prepared in the form of the above-mentioned maintenance / maintenance console.

[Action]

Maintenance / maintenance console physically separated from the central operator console for system operators above
Maintenance-dedicated information is output and displayed so that maintenance operations can be speeded up.Failure data enables automatic retrieval and output of guide information for actual maintenance work that can be automatically prepared in the centralized monitoring device. It is possible to save labor such as eliminating the need for manual trouble shooting search and prevent human error during maintenance. The transmission technology used for exchanging information among the centralized monitoring device, each console, and each instrumentation control device can use a conventional technique.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is an overall configuration diagram showing an embodiment of an instrumentation control system maintenance support system for a nuclear power plant according to the present invention. In FIG. 1, 1 is a nuclear power plant, 2 is an instrumentation control device group,
2a is plant diagnosis information, 3 is a centralized monitoring device, 4 is a central operator console, 5 is a console dedicated to the maintenance section, and 6 is a portable maintenance support tool. The plant raw data of the nuclear power plant 1 of FIG. 1 is processed by the instrumentation control device group 2, and the plant diagnosis information 2a including the diagnosis result information of each instrumentation control device, the plant operation data, the alarm information, the past plant data and the like. Is output to and stored in the centralized monitoring device 3. Based on the diagnostic information 2a, the centralized diagnostic device 3 separately prepares information for the operator, information for the maintenance department, and information for the staff in charge of actually maintaining the instrumentation control device, and the information for the operator is provided to the central operator console. 4, the information for the maintenance department is output to the console 5 for the maintenance department, and the information for the maintenance staff is output to the portable maintenance support tool 6. That is, the maintenance / maintenance information can be output separately from the operation information on the maintenance / maintenance console.

With the above configuration, the central operator console 4 forming each man-machine innocent ace part has a function of being monitored and operated by an operator during normal operation, and its display part is provided by a plurality of CRTs and one or a plurality of large displays. The operation part is composed of an operation switch for plant operation, a keyboard usually used in combination with a CRT, and the like. As the display information, macro information necessary for the operation of the operator is displayed during normal operation, but when a failure occurs, the level of detail actually required for the failure response regarding the location of the failure and the cause / countermeasure is displayed. One console for maintenance department 5
Displays the above detailed information required when a failure occurs, which facilitates the communication of information to maintenance staff working away from the main control room during normal operation and provides early recovery from the failure. This can be realized by a single terminal equipped with this console CRT and keyboard. Further, the portable maintenance support tool 6 is connected to a control device or an input / output device which actually needs maintenance and is used for confirmation and repair of the faulty part. This confirmation and repair work is usually performed by the centralized monitoring device 3. It is carried out based on the failure information and the trouble shooting information displayed on the central operator console 4, but this work is promoted by providing an interactive function with the centralized monitoring device 3, and the hardware of this tool is portable. It is desirable that a portable personal computer or the like can be used. Note that the interactive function with the centralized monitoring device 3 is also supported by the central operator console 4 and the console 5 dedicated to the maintenance section, so that these can interactively display failure information.

FIG. 2 is a connection system diagram by the transmission line of FIG. Second
In the figure, 7 is a transmission line, 8 is a control unit CTL, and 9 is an input / output unit RTU. As shown in FIG. 2, the input / output unit 9 exchanges signals with the operating end of the plant 1 and the detector.
The control is executed by the control unit 8 of each instrumentation control device connected via the transmission line 7. The centralized monitoring device 3 is also installed on the transmission line 7 and exchanges information with the control unit 8 or the input / output unit 9 according to a predetermined communication protocol. In this way, the process data including the sensor information of the plant 1 is input and processed by the input / output unit 9, and then the transmission line 7
After that, the control unit 8 receives an input signal diagnosis, and the control unit 8 performs a control calculation process with this input signal and then transmits a control output signal to the input / output unit 9. The abnormality diagnosis result by the software generated in this process is transmitted to the centralized monitoring device 3 through the transmission line 7, and the hardware failure information (RAS information) of the printed board is also the data of the abnormal display register of each printed board. Is also transmitted to the centralized monitoring control device 3 via the transmission line 7. When an abnormality occurs in this instrumentation control system, it is selected / separated into a portable maintenance support tool 6 connected to the control unit 8 or the input / output unit 9 by a dedicated console 5 for maintenance section and a dedicated connector, which is different from the central operator console The maintenance / maintenance information is output.

FIG. 3 is a processing function diagram of selection / separation of maintenance / maintenance dedicated information of the control unit 8 and the centralized monitoring device 3 of the instrumentation control device of FIG. 2 (FIG. 1). In FIG. 3, 10 is abnormality diagnosis processing, 11 is flip-flop, 12 is collective abnormality signal, 13 is failure display register data, 14 is transmission processing section, 15 is failure data, 16 is failure code, 17 is transmitter ID number. , 18 is a failure device number (TAG.NO), 19 is a maintenance guide file, 20 is a spare parts information file, 21 is a process data file, and 22 is a maintenance / maintenance data file. In the control unit 8 shown in FIG. 3, generally, an upper and lower limit check, a rate of change check, and a rationality check between different signals are performed by an abnormality diagnosis process 10 by software, and a flip-flop 11 is set for each individual item. . The abnormality diagnosis result is grouped into several items, and the collective abnormality signal 12 in each group is transmitted to the transmission path 7 via the transmission processing unit 14. In addition, the failure information of the printed board that constitutes the control unit 8 is also treated as the failure display register data 13 in the same manner as the transmission processing unit 14
Is transmitted to the transmission line 7 via. Further, regarding the input / output unit 9 shown in FIG. Of course, when the input / output unit 9 has an intelligent function (arithmetic processing function) to some extent, a part of the abnormality diagnosis processing and the abnormality information transmission processing by the software described above is similarly executed on the input / output unit 9 side. Become.

In this way, the failure data 15 transmitted from the individual instrumentation control device to the centralized monitoring device 3 via the transmission unit 7 is composed of a failure code 16 including a transmission device ID number 17 and a failure device number 18. The failure code 16 is a classification classification of the failure, that is, whether it is software abnormality diagnosis information or RAS information, and if it is software abnormality diagnosis information, it is classified into an input signal abnormality or a heterogeneous signal rational check abnormality. Show. The transmitter device ID number 17 is an ID number for identifying the control unit 8 or the input / output unit 9 that has output the abnormality information, and indicates the number uniquely determined by the control unit 8 or the input / output unit 9. The failed device number 18 is the sending device ID number.
A number corresponding to a hardware component such as a printed board or the like that constitutes the control unit 8 or the input / output unit 9 that is uniquely obtained by 17 is shown. Therefore, for example, a specific printed board is the transmitter device ID number 17 and the like. It is uniquely determined by the failed device number 18. If the hardware, for example, a printed board, is broken by the transmitter device ID number 17 and the broken device number 18, the hardware maintenance guide is selected and separated from the maintenance guide file 19, and the maintenance / maintenance data file is selected.
Stored in 22. When the hardware is replaced, the data in the spare data file 20 is selected and separated by the number in the failure data 15 and stored in the maintenance / maintenance data file 22. Further, main plant data before and after the occurrence of a failure are selected and separated from the process data file 21 and stored in the maintenance / maintenance data file 22. The maintenance / maintenance information stored in the maintenance / maintenance data file 22 can be downloaded to each interface according to a request from the maintenance section dedicated console 5 or the portable maintenance / restoration tool 6.

[Effect of device]

According to the present invention, the maintenance / maintenance information of the nuclear power plant can be clearly separated / outputted from the information for the operator, so that the maintenance work can be speeded up and the maintenance work guide is automatically given. As a result, human error during maintenance work can be significantly reduced.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of an instrumentation control system maintenance support system for a nuclear power plant according to the present invention, and FIG.
FIG. 3 is a processing function diagram of the control unit and the centralized monitoring device in FIG. 1 (FIG. 2). 1 ... plant, 2 ... instrumentation control device group, 2a ... plant diagnostic information, 3 ... centralized monitoring device, 4 ... central operator console, 5 ... maintenance section dedicated console, 6 ... portable maintenance support tool, 7 ... transmission line, 8 ... Control unit, 9 ... Input / output unit, 12 ... Batch error signal, 13 ... Fault display register data, 15 ... Fault data, 16 ... Fault code, 17 ... Transmitter ID number, 18 ... Fault device number, 19 ... Maintenance Guide file, 20 ... Spare part information file, 21 ... Process data file, 22 ... Maintenance / maintenance data file.

Claims (2)

[Claims] 1. A centralized monitoring device for inputting and storing diagnostic result information of each instrumentation control device of a nuclear power plant, plant operation data, alarm information, diagnostic information such as past plant data, and information from the centralized monitoring device. In a nuclear power plant instrumentation control system maintenance support system consisting of multiple output / display units, the information displayed for the operator is output to the central operator console, and the information for the department in charge of maintenance is output to the console dedicated to the maintenance section. An instrumentation control system maintenance support system for a nuclear power plant, which is configured to output and to output to a portable maintenance support tool the information necessary for actually performing maintenance of the instrumentation control device. 2. A repair procedure stored in the centralized monitoring device and the failure based on diagnostic information including an ID number, a failure code, and a device number of each device transmitted from the individual instrumentation control device. It is characterized in that the status of spare parts of hardware and the main plant data before and after the occurrence of a failure are separated and stored, and can be downloaded to each interface at the request of the console for the maintenance section or the portable maintenance support tool. An instrumentation control system maintenance support system for a nuclear power plant according to claim 1.