JP2015106391A - Maintenance and inspection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a maintenance and inspection system which supports inspection allowing for health of a plant device before inspection work.SOLUTION: A maintenance and inspection system 10 of the present invention includes a plant signal analyzer 200 for analyzing a plurality of plant signals and a maintenance and inspection database device 300 for extracting an inspection object device being a plant device needing to be inspected, on the basis of the analysis result of the plant signal analyzer 200. The maintenance and inspection database device 300 includes an inspection necessity determination processing unit 310 for determining whether it is necessary to inspect an abnormal plant signal or not on the basis of determination criterion data and an inspection item addition processing unit 320 which, if it is determined by the inspection necessity determination processing unit 310 that it is necessary to inspect the abnormal plant signal, adds the abnormal plant signal and an inspection item relating to the abnormal plant signal.

Description

  The present invention relates to a maintenance inspection system that supports inspection work of plant equipment managed by a plant monitoring control device that monitors plant signals.

  In the conventional maintenance inspection system, it is generally necessary to register in advance the plant equipment and inspection items to be inspected. However, after installing the plant equipment including the runt equipment that needs to be inspected, if the specification documents indicating the specifications of the equipment are not available, the inspection items for the equipment could not be registered in the maintenance inspection system. In addition, in order to use the maintenance inspection system, preparations such as extraction of inspection items for each plant equipment scheduled to be inspected and registration of inspection items in the maintenance inspection system are performed manually, so the inspection items were not registered. In this case, there is a problem that the inspection is not performed because the operation is not included in the inspection target device even though the operation of the plant device that requires the inspection is started.

  Patent Document 1 describes a maintenance support device for efficiently supporting maintenance work of a power plant. The maintenance support device of Patent Document 1 includes a condition setting unit that determines a range of a device to be inspected, an inspection item setting unit that provides inspection items and inspection-related information related to the device, a damaged part and a damage form that are input as inspection results And a survey item setting unit that provides survey-related information and survey-related information including additional inspection items and survey items for investigating the cause of damage. The maintenance support device of Patent Document 1 inputs a damage form discovered as a result of inspection work, and causes a cause investigation item for investigating the cause of damage including further detailed inspection work, to a unit or part / part unit. By outputting to, it was possible to perform highly efficient maintenance work with very little dead time.

Japanese Patent Application Laid-Open No. 6-129956 (stages 0013 to 0014, stages 0024 to 0028, FIG. 1)

  Conventional maintenance inspection systems consider addition of inspection intervals and inspection items with reference to the results of maintenance inspection work when making an inspection plan. Therefore, in principle, inspection items are added and inspection plans are implemented after maintenance inspection work. On the other hand, the maintenance support device of Patent Document 1 performs a planned inspection, and inputs damage forms discovered as a result of the inspection work at the inspection place, thereby causing a damage cause including further detailed inspection work. Although the cause investigation item for investigation was extracted from the investigation information database, the inspection considering the soundness of the plant equipment before the inspection work could not be performed.

  The inspection work of plant equipment is often performed at a determined inspection cycle, and even the maintenance support device of Patent Document 1 cannot flexibly perform inspection in consideration of the soundness of the plant equipment. In other words, change the inspection cycle of equipment that has almost no abnormalities or no problems even if there are abnormalities, raise the inspection priority of equipment that shows malfunctions in the past few days, and temporarily increase the inspection density. The timely response such as raising cannot be performed by the maintenance support apparatus of Patent Document 1, and currently depends on the ability of the maintenance worker. Therefore, there is a need for a system that supports an appropriate inspection that takes into consideration the soundness of the plant equipment before the inspection work so that an appropriate inspection can be performed without depending on the ability of the maintenance worker.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to obtain a maintenance inspection system that supports the inspection in consideration of the soundness of the plant equipment before the inspection work.

  The maintenance inspection system of the present invention is a plant signal analysis device that analyzes a plurality of plant signals collected from plant equipment by the plant monitoring and control device, and a plant device that requires inspection based on the analysis result of the plant signal analysis device. A maintenance inspection database device for extracting equipment to be inspected, and the plant signal analyzer determines whether the measured value of the plant signal matches the abnormality determination condition, and an abnormal plant that is a plant signal that has been determined to be abnormal An abnormality determination processing unit for notifying the maintenance inspection database device of the signal, and the maintenance inspection database device includes an inspection necessity determination processing unit for determining whether the abnormal plant signal needs to be inspected based on the determination reference data; The inspection item related to the abnormal plant signal and the abnormal plant signal when the rejection determination processing unit determines that the inspection is necessary. And inspection item adding process portion to be added to the inspection item data storage unit, and having a.

  According to the maintenance inspection system of the present invention, when the maintenance inspection database device determines whether or not an abnormal plant signal that has been determined to be abnormal by the plant signal analyzer is inspected, and if it is determined that inspection is necessary, the abnormal plant signal Since the inspection item related to the abnormal plant signal is added to the inspection item data storage unit, it is possible to support the inspection in consideration of the soundness of the plant equipment before the inspection work.

It is a block diagram of the maintenance inspection system by Embodiment 1 of this invention. It is a block diagram of the maintenance inspection system by Embodiment 1 of this invention. It is a figure explaining the method of apparatus abnormality determination of the maintenance inspection system of this invention. It is a flowchart which shows operation | movement of the plant monitoring control apparatus of FIG. It is a flowchart which shows operation | movement of the plant signal analyzer of FIG. It is a flowchart of the determination condition setting process part of FIG. It is a flowchart which shows operation | movement of the maintenance inspection database apparatus of FIG. It is a flowchart which shows operation | movement of the maintenance inspection fixed terminal of FIG. It is a flowchart which shows operation | movement of the maintenance inspection portable terminal of FIG. It is a block diagram of the principal part of the maintenance inspection system by Embodiment 2 of this invention. It is a block diagram of the principal part of the maintenance inspection system by Embodiment 3 of this invention. It is a block diagram of the principal part of the maintenance inspection system by Embodiment 4 of this invention. It is a block diagram of the principal part of the maintenance inspection system by Embodiment 5 of this invention.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of a maintenance inspection system according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram of the maintenance inspection system according to Embodiment 1 of the present invention. FIG. 3 is a diagram for explaining a method for determining device abnormality in the maintenance inspection system of the present invention. The inspection and maintenance system 10 includes a plant signal analysis device 200 that analyzes plant signals of the control device 600 collected by the plant monitoring and control device 100 that performs monitoring control of the plurality of control devices 600, a maintenance inspection database device 300, and a maintenance inspection mobile phone. A terminal 400 and a maintenance inspection fixed terminal 500 are provided. The maintenance inspection portable terminal 400 and the maintenance inspection fixed terminal 500 are maintenance inspection terminals. A plurality of control devices 600 are connected to a plant control bus 700, and the plant control bus 700 is connected to a network 900 via an IF (interface) device 800. The network 900 and the network 910 are connected by an FW device 810.

  FIG. 1 shows an example in which the plant monitoring control device 100, the plant signal analysis device 200, and the maintenance inspection database device 300 are connected to the network 900, and the maintenance inspection portable terminal 400 and the maintenance inspection fixed terminal 500 are connected to the network 910. . The plant monitoring control device 100 has a function of performing monitoring control of the plurality of control devices 600 and storing a plant signal of the control device 600 in the plant monitoring control device 100. The plant signal analysis device 200 analyzes the plant signal of the control device 600 and stores the analysis result in a storage unit in the device 200 and notifies the maintenance inspection database device 300 of the result. The maintenance inspection database device 300 extracts inspection equipment that needs to be inspected from the notified analysis result, and notifies the maintenance inspection fixed terminal 500 and the maintenance inspection portable terminal 400. The maintenance / inspection fixed terminal 500 and the maintenance / inspection portable terminal 400 can perform operations for adding inspection target devices and inspection data items by notification. Note that the plant signals may be collected by a collection / control device called a sequencer or controller instead of the plant monitoring control device 100.

  With reference to FIG. 3, a method for determining an equipment abnormality in the maintenance inspection system will be described. Normally, in the case of plant monitoring, when the upper and lower limit values (limit threshold values) set in each plant signal 11 are exceeded, a warning is issued as a serious failure. In the plant signal analyzing apparatus 200, the user can set the attention threshold Th2 separately from the limit threshold Th1. The plant signal analyzing apparatus 200 counts the number of times that exceeds the attention threshold Th2 in FIG. Cp shown in FIG. 3 is a count target, and this count target Cp is counted. In FIG. 3, it is counted seven times. When the plant signal analyzing apparatus 200 determines that the number of times that the attention threshold Th2 has been clearly exceeded as compared with an arbitrary period is in an increasing tendency, or when a positive signal tendency 12 is observed in the right direction. Determines that the plant signal 11 is in the caution range, recognizes the device of the corresponding plant signal 11 as a device requiring attention, and adds it to the inspection target device. The plant signal analyzing apparatus 200 determines that the plant signal 11 is in the normal range when it is determined that the number of times that the attention threshold Th2 is clearly exceeded does not tend to increase as compared with an arbitrary period.

  FIG. 2 shows the relationship between the devices of the inspection and maintenance system 10. The plant data stored in the trend data storage unit 101 and the process data storage unit 102 is sent to the plant signal analysis device 200 from the plant monitoring control device 100 that monitors the plant equipment through the plant monitoring server IF (interface) 110 at regular intervals. Send regularly. The plant data stored in the trend data storage unit 101 is trend data, and the plant data stored in the process data storage unit 102 is process data. Further, the plant monitoring control device 100 converts a plant signal item, which is a plant signal item to be monitored, stored in the plant signal item data storage unit 103 into a plant signal analysis device 200 when a plant signal item is added. Send to.

The plant signal analysis device 200 confirms whether or not the plant signal item of the plant monitoring control device 100 is updated in the determination condition setting processing unit 230, and acquires the plant signal item from the plant monitoring control device 100 when there is an update. . The determination condition setting processing unit 230 sets the acquired plant signal item in the plant signal definition data storage unit 202. In addition, the plant signal analysis device 200 receives the plant data (trend data, process data) transmitted from the plant monitoring control device 100 by the online data collection processing unit 210. The online data collection processing unit 210 notifies the abnormality determination processing unit 220 that the plant data (trend data, process data) has been received. The abnormality determination processing unit 220 extracts plant signal data that is subject to trend analysis based on the plant signal definition data, and stores the extracted data in the online data accumulation data storage unit 201. The abnormality determination processing unit 220 acquires the condition definition necessary for device abnormality determination and the signal item to be determined from the plant signal definition data storage unit 202, and performs the device abnormality determination described with reference to FIG. When the abnormality determination processing unit 220 determines that there is an abnormality, that is, when it is determined that the plant signal subject to abnormality determination is an abnormal plant signal, the abnormality inspection processing unit 220 notifies the maintenance inspection database device 300 that there is an abnormality (abnormality notification). ) And an abnormality determination list as a result of the abnormality determination is transmitted.

  The maintenance inspection database device 300 receives a notification (abnormality notification) that there is an abnormality from the abnormality determination processing unit 220 of the plant signal analysis device 200 at the inspection necessity determination processing unit 310. The inspection necessity determination processing unit 310 retrieves the past determination result and the determination criterion stored in the determination criterion data storage unit 304 from the determination result data storage unit 301, and the past determination result and determination criterion and the abnormality received this time The contents of the notification (abnormality determination list) are compared, and it is determined whether an inspection item corresponding to the notification to the inspection item addition processing unit 320 needs to be added. Further, the inspection necessity determination processing unit 310 stores the data notified from the abnormality determination processing unit 220 in the determination result data storage unit 301 regardless of the determination result. When it is determined that the inspection item needs to be added, the inspection necessity determination processing unit 310 notifies the inspection item addition processing unit 320 of an execution request for the additional processing. Upon receiving this notification, the inspection item addition processing unit 320 adds the corresponding inspection item to the inspection item data storage unit 302. The inspection items include an abnormal plant signal, which is a plant signal that is an abnormality determination target, and items related to the abnormal plant signal. After the inspection item is added, the inspection item addition processing unit 320 transmits a notification of an inspection implementation request for encouraging the inspection to the maintenance inspection portable terminal 400 and the maintenance inspection fixed terminal 500, and waits for the start of the inspection. In FIG. 2, the inspection necessity determination processing unit 310 and the inspection item addition processing unit 320 are collectively referred to as an inspection item management processing unit 390.

  The maintenance inspection fixed terminal 500 is premised on a terminal that can always be connected to the maintenance inspection database apparatus 300. Therefore, after the maintenance inspection fixed terminal 500 receives the inspection execution request notification in the inspection execution notification processing unit 520, the inspection start processing unit 510 stores the data in the inspection item data storage unit 302 included in the maintenance inspection database device 300. Refer directly.

  Since the maintenance inspection portable terminal 400 is used by being carried to an inspection place, there is a case where there is no means for referring to the maintenance inspection database device 300. For this reason, the maintenance inspection portable terminal 400 needs to store additional data inside when an inspection item is added. Therefore, unlike the maintenance inspection fixed terminal 500, the maintenance inspection portable terminal 400 receives the inspection execution request notification from the inspection execution notification processing unit 430, and then the inspection item download processing unit 440 causes the maintenance inspection database device 300 to After the data stored in the inspection item data storage unit 302 is downloaded, it is stored as inspection item data 401 for inspection portable terminal. The maintenance inspection portable terminal 400 has a mechanism in which the added inspection item is read when the processing of the next inspection start processing unit 450 is executed.

  Next, the operation of the inspection and maintenance system 10 will be described in detail with reference to FIGS. 4 is a flowchart showing the operation of the plant monitoring control apparatus of FIG. 2, and FIG. 5 is a flowchart showing the operation of the plant signal analysis apparatus of FIG. 6 is a flowchart of the determination condition setting processing unit in FIG. 2, and FIG. 7 is a flowchart showing the operation of the maintenance inspection database apparatus in FIG. FIG. 8 is a flowchart showing the operation of the maintenance inspection fixed terminal of FIG. 2, and FIG. 9 is a flowchart showing the operation of the maintenance inspection portable terminal of FIG. As shown in FIG. 4, the plant monitoring control device 100 periodically collects trend data and process data, which are plant data, from the control device 600 connected to the plant control bus 700, and stores the trend data in the trend data storage unit 101. The process data is stored in the process data storage unit 102 (step S001). Thereafter, the plant monitoring and control apparatus 100 transmits plant data to the plant signal analysis apparatus 200 (step S002). The plant monitoring and control apparatus 100 confirms whether or not the data collection command is continued in step S003, and if the data collection command is continued, returns to step S001 and collects plant data at a predetermined time. If the data collection command is finished (not continued) in step S003, the process is finished.

  As shown in FIG. 5, the plant signal analysis apparatus 200 uses plant signal definition data in which an abnormal condition for analyzing a plant signal to be analyzed by the abnormality determination processing unit 220 immediately after startup is set. Reading from the data storage unit 202 (step S101). After reading the plant signal definition data, the online data collection processing unit 210 receives the plant data from the plant monitoring control device 100 (step S102). The abnormality determination processing unit 220 extracts data of the plant signal that has been subject to trend analysis based on the already read plant signal definition data (step S103). The abnormality determination processing unit 220 stores the extracted corresponding data in the online data accumulation data storage unit 201 (step S104).

  The abnormality determination processing unit 220 repeats the data abnormality determination until there is no trend analysis target data. First, the abnormality determination processing unit 220 determines whether or not the trend analysis target signal matches an abnormality determination condition set in the plant signal definition data (step S105). The abnormality determination processing unit 220 proceeds to step S106 when the trend analysis target signal matches the condition, and proceeds to step S107 when the trend analysis target signal does not match the condition. In step S106, the abnormality determination processing unit 220 adds the abnormality determination list to the abnormality determination list when it is determined as abnormal. In step S107, the abnormality determination processing unit 220 determines whether there is target data. If there is target data, the process returns to step S105, and if there is no target data, the process proceeds to step S108. After completing the trend analysis, the abnormality determination processing unit 220 transmits an abnormality determination list to the maintenance inspection database device 300 together with the abnormality determination notification (step S108).

  Creation of plant signal definition data for performing plant signal trend analysis is performed by the user using the determination condition setting processing unit 230. Details will be described later. Since the plant signal definition data is edited by the user, the abnormality determination processing unit 220 checks data update (step S109). If there is an update, the process proceeds to step S110. If there is no update, the process proceeds to step S111. move on. In step S110, abnormality determination processing unit 220 reads plant signal definition data. The plant signal analyzing apparatus 200 confirms whether or not the signal analysis command is continued in step S111. If the signal analysis command is continued, the plant signal analysis apparatus 200 returns to step S102, and the signal analysis command is finished (continues). If not, exit.

  As illustrated in FIG. 6, the determination condition setting processing unit 230 acquires a device list to be inspected from the inspection device list transmission processing unit 330 of the maintenance inspection database device 300 (step S005), and the plant monitoring control device 100 transmits a plant. Signal item data is acquired (step S006). The equipment list is stored in the inspection equipment data storage section 303 of the maintenance inspection database apparatus 300, and the plant signal item data is stored in the plant signal item data storage section 103 of the plant monitoring control apparatus 100. Based on the user's operation instruction, the determination condition setting processing unit 230 defines measurement values that are determined to be associations between inspection equipment and plant signal items (step S007), and stores these in the plant signal definition data storage unit 202. (Step S008). As a result, a plant signal that matches the determination condition defined by the measurement value can be determined as an abnormal signal.

As shown in FIG. 7, the maintenance inspection database device 300 performs initialization such as reading of definition data necessary for the operation of the inspection necessity determination processing unit 310 at the time of activation (step S201), from the plant signal analysis device 200. Is waiting to receive the update notification (step S202).
In step S202, after receiving the update notification, the inspection necessity determination processing unit 310 determines whether the plant signal determined to be abnormal has already been added to the inspection item from the determination result data storage unit 301 using the search key. It is searched whether it is not the object (step S203). The inspection necessity determination processing unit 310 determines whether or not inspection is necessary based on the determination reference data stored in the determination reference data storage unit 304 (step S204). If it is determined that it is unnecessary, the process proceeds to step S206.

  In step S205, the inspection necessity determination processing unit 310 adds the target signal to the determination result data storage unit 301 and adds it to the inspection required list when it is determined that the inspection is necessary (step S205). In step S206, the inspection necessity determination processing unit 310 determines whether there is target data. If there is target data, the process returns to step S204, and if there is no target data, the process proceeds to step S207.

  In step S207, the inspection item addition processing unit 320 stores the inspection item of the equipment that needs to be inspected after all the determination results are obtained for the abnormality determination target notified from the plant signal analyzing apparatus 200. It adds to the part 302 (step S207). The inspection items include an abnormal plant signal, which is a plant signal that is an abnormality determination target, and items related to the abnormal plant signal. After adding the inspection item, the inspection item addition processing unit 320 notifies the maintenance / inspection fixed terminal 500 and the maintenance / inspection portable terminal 400 to request the inspection (step S208). In step S209, the maintenance inspection database apparatus 300 confirms whether the maintenance inspection data addition command is continued. If the maintenance inspection data addition command is continued, the process returns to step S202, and the maintenance inspection data addition command is completed. If yes (not continued), exit.

  As shown in FIG. 8, when the maintenance inspection fixed terminal 500 is started, the inspection execution notification processing unit 520 checks whether or not the inspection item is automatically added to the inspection item data storage unit 302 of the maintenance inspection database device 300 ( In step S301), if it is determined that there is an addition, the process proceeds to step S302. If it is determined that there is no addition, the process proceeds to step S303. In step S302, the inspection execution notification processing unit 520 displays a message on the display unit of the maintenance / inspection fixed terminal 500 to the effect that a device requiring attention has been added (step S302).

  In step S303, the inspection execution notification processing unit 520 executes steps S304 and S305 in the same manner as at the time of activation when a notification requesting inspection execution is received from the maintenance inspection database device 300. In step S304, the inspection execution notification processing unit 520 checks in the maintenance inspection database apparatus 300 whether automatic addition of inspection items has been performed, and proceeds to step S305 if it is determined that there is an addition, and if there is no addition. When it determines, it progresses to step S306. In step S305, the inspection execution notification processing unit 520 displays a message on the display unit of the maintenance / inspection fixed terminal 500 to the effect that a device requiring attention has been added (step S305). The maintenance inspection fixed terminal 500 confirms whether or not the terminal operation command is continued in step S306. If the terminal operation command is continued, the process returns to step S303, and the terminal operation command is completed (continues). If not, exit.

  As described above, the maintenance inspection fixed terminal 500 receives the inspection execution request notification from the inspection execution notification processing unit 520, and then the inspection start processing unit 510 includes the inspection item data storage unit 302 included in the maintenance inspection database device 300. The inspection process or the inspection support process is executed by referring directly to the data.

As shown in FIG. 9, when the maintenance inspection portable terminal 400 is activated, the inspection execution notification processing unit 430 checks whether the inspection item is automatically added to the maintenance inspection database device 300 (step S401). When it determines, it progresses to step S402, and when it determines with there being no addition, it progresses to step S403. In step S <b> 402, the inspection item download processing unit 440 automatically downloads inspection items from the inspection item data storage unit 302 of the maintenance inspection database device 300. Thereafter, the maintenance inspection portable terminal 400 is in a standby state until the inspection starts.

  In step S403, when the inspection execution notification processing unit 430 receives a notification requesting the inspection execution from the maintenance inspection database apparatus 300 during the standby state, the inspection execution notification processing unit 430 executes steps S404 and S405 in the same manner as at the time of activation. In step S404, the inspection execution notification processing unit 430 checks whether or not the inspection item is automatically added to the maintenance inspection database apparatus 300. If it is determined that there is an addition, the process proceeds to step S405, and it is determined that there is no addition. If so, the process proceeds to step S406. In step S405, the inspection item download processing unit 440 automatically downloads inspection items from the inspection item data storage unit 302 of the maintenance inspection database device 300.

  At the timing when the inspection start process is executed in step S406, the inspection start processing unit 450 reads the downloaded inspection item data 401 for inspection portable terminal (step S407). Thereby, the maintenance inspection portable terminal 400 enters the maintenance inspection input state. After that, the maintenance inspection portable terminal 400 executes an inspection process or an inspection support process by a user operation (step S408). The maintenance inspection portable terminal 400 confirms whether or not the portable terminal operation command is continued in step S409. If the portable terminal operation command is continued, the process returns to step S403, and the portable terminal operation command is completed ( If not, exit.

  The inspection and maintenance system 10 according to the first embodiment can assist the inspection in consideration of the soundness of the plant equipment before the inspection work. That is, the inspection and maintenance system 10 receives a plant signal from a plant device (control device 600), analyzes and extracts a signal that tends to approach a failure, and whether or not the extracted device needs to be inspected. And a maintenance inspection database device 300 having a function of automatically performing registration for making the equipment subject to inspection when it is judged that inspection is necessary. It is possible to assist the inspection in consideration of the soundness level, and it is possible to perform an accurate inspection work paying attention to the omission of the inspection work and preventive maintenance.

  As described above, the inspection and maintenance system 10 according to the first embodiment includes the plant signal analysis apparatus 200 that analyzes a plurality of plant signals collected from the plant equipment (control apparatus 600) by the plant monitoring control apparatus 100, and the plant signal analysis apparatus. A maintenance inspection database device 300 that extracts equipment to be inspected, which is a plant equipment (control device 600) that needs to be inspected, based on the analysis result of 200. The plant signal analysis device 200 determines whether the measured value of the plant signal matches the abnormality determination condition, and notifies the maintenance inspection database device 300 of the abnormal plant signal that is the plant signal that has been determined to be abnormal. 220, and the maintenance inspection database device 300 has an inspection necessity determination processing unit 310 that determines whether or not the abnormal plant signal is inspected based on the determination reference data, and an inspection necessity determination processing unit 310 determines whether the inspection is necessary. When determined, the inspection item addition processing unit 320 adds the abnormal plant signal and the inspection item related to the abnormal plant signal to the inspection item data storage unit 302. Therefore, the inspection / maintenance system 10 according to the first embodiment determines that the maintenance / inspection database apparatus 300 determines whether or not an abnormal plant signal that has been determined to be abnormal by the plant signal analysis apparatus 200 is inspected, and determines that inspection is necessary. Since the abnormal plant signal and the inspection item related to the abnormal plant signal are added to the inspection item data storage unit 302, the inspection considering the soundness of the plant equipment before the inspection work can be supported.

Embodiment 2. FIG.
FIG. 10 is a block diagram of a main part of the maintenance inspection system according to the second embodiment of the present invention. In FIG. 10, the plant signal analysis apparatus 200 in the inspection and maintenance system 10 omits the contents illustrated in FIG. 2. In the first embodiment, the inspection item addition processing unit 320 automatically adds equipment inspection items associated with the plant signal determined to be inspected by the inspection necessity determination processing unit 310 of the maintenance inspection database device 300. The processing was described. The inspection and maintenance system 10 according to the second embodiment is different from the first embodiment in that a necessity frequency search processing unit 370 is added to the maintenance inspection database device 300, and a cautionary device highlight display processing unit 480 is added to the maintenance inspection portable terminal 400. The difference is that a device requiring attention highlighting processing unit 540 is added to the maintenance inspection fixed terminal 500.

  The operation of the inspection / maintenance system 10 according to the second embodiment will be described with respect to the differences from the first embodiment. In the second embodiment, the necessity frequency search processing unit 370 counts the number of times that the plant signal recorded in the determination result data storage unit 301 is necessary and is set in the determination reference data storage unit 304. Check the cumulative period and the specified number of times. The necessary / unnecessary frequency search processing unit 370 records, as equipment to be repaired, in the inspection item addition processing unit 320 in the inspection item data storage unit 302 for devices whose number of inspections exceeds the specified number of times during the period. In addition, the execution request for the additional process is notified via the inspection necessity determination processing unit 310. Upon receiving this notification, the inspection item addition processing unit 320 records the corresponding device as a repair target device in the inspection item data storage unit 302. After adding the repair target device, the inspection item addition processing unit 320 transmits a notification to the effect that the repair target device has been registered in the maintenance inspection portable terminal 400 and the maintenance inspection fixed terminal 500. In FIG. 10, the inspection necessity determination processing unit 310, the inspection item addition processing unit 320, and the necessity frequency search processing unit 370 are collectively referred to as an inspection item management processing unit 390.

  When the maintenance inspection fixed terminal 500 receives a notification that the device to be repaired has been registered by the inspection execution notification processing unit 520, the maintenance inspection fixed terminal 500 displays a message of the device requiring attention and repairs the device at the start of the inspection. In order to visually identify the target device, the device requiring attention highlighting processing unit 540 performs highlighting using a color or an icon when displaying the inspection item. Similar to the maintenance inspection fixed terminal 500, the maintenance inspection portable terminal 400 displays a message of cautionary device registration when receiving a notification that the repair target device has been registered by the inspection execution notification processing unit 430. At the time of starting, highlighting using a color or an icon is performed in the device requiring attention highlighting processing unit 480 at the time of displaying an inspection item so that the device can be visually identified as a repair target device.

  The inspection / maintenance system 10 according to the second embodiment includes a need / requirement frequency search processing unit 370 of the maintenance / inspection database apparatus 300, a cautionary device emphasis display processing unit 540 of the maintenance / inspection fixed terminal 500, and a caution of the maintenance / inspection portable terminal 400. By adding the device highlighting processing unit 480, it is possible to distinguish and display a healthy device (a device that requires attention) and a device that does not (a device targeted for repair) even if it is necessary to pay attention among the devices to be inspected. Inspections for repair target devices can be performed at higher density than inspections for sound devices. That is, the inspection and maintenance system 10 according to the second embodiment can perform an appropriate inspection in consideration of the inspection density in the inspection operation of the plant equipment.

  It should be noted that a request for performing additional processing is made via the inspection necessity determination processing unit 310 so that the necessity frequency search processing unit 370 records the inspection item addition processing unit 320 in the inspection item data storage unit 302 as a repair target device. However, the necessity number search processing unit 370 may directly request the inspection item addition processing unit 320 to perform the additional processing.

Embodiment 3 FIG.
FIG. 11 is a block diagram of a main part of a maintenance inspection system according to Embodiment 3 of the present invention. In FIG. 11, the plant signal analysis apparatus 200 in the inspection / maintenance system 10 omits the contents shown in FIG. In the first embodiment, the inspection item addition processing unit 320 automatically adds equipment inspection items associated with the plant signal determined to be inspected by the inspection necessity determination processing unit 310 of the maintenance inspection database device 300. The processing was described. The inspection and maintenance system 10 of the third embodiment is different from the first embodiment in that an inspection item exclusion processing unit 380 is added to the maintenance and inspection database apparatus 300.

  The operation of the inspection / maintenance system 10 according to the third embodiment will be described with respect to the differences from the first embodiment. In the third embodiment, the inspection necessity determination processing unit 310 provides a period for making an exclusion determination in the inspection necessity determination criterion data stored in the determination criterion data storage unit 304. When it is determined that there is no abnormality within the designated period, the inspection necessity determination processing unit 310 has not received an update notification for the plant signal, with respect to the plant signal that has been determined to be abnormal within the designated period. In addition, the inspection item addition processing unit 320 executes the inspection item exclusion processing unit 380 and transmits a notification to the effect that the inspection item is excluded from the inspection item data storage unit 302.

  Upon receiving this notification, the inspection item addition processing unit 320 instructs the inspection item exclusion processing unit 380 to exclude the inspection item, and the inspection item exclusion processing unit 380 excludes the inspection item from the inspection item data storage unit 302. In FIG. 11, the inspection necessity determination processing unit 310, the inspection item addition processing unit 320, and the inspection item exclusion processing unit 380 are collectively referred to as an inspection item management processing unit 390. However, the inspection item data that can be excluded from the inspection item data storage unit 302 is limited to the inspection item data added by the inspection item addition processing unit 320. In addition, the user can designate deletion of any inspection item data and prohibition of deletion.

  The inspection / maintenance system 10 according to the third embodiment can also change the inspection cycle of equipment with few abnormalities or cancel the inspection item that has been automatically added within the normal range from the inspection target. The inspection / maintenance system 10 of the third embodiment is appropriate by changing the inspection cycle of a device with few abnormalities and releasing the inspection item that has been automatically added to the normal range from the inspection target. An efficient inspection can be performed.

Embodiment 4 FIG.
FIG. 12 is a block diagram of a main part of a maintenance inspection system according to Embodiment 4 of the present invention. In FIG. 12, the plant signal analysis device 200 in the inspection and maintenance system 10 omits the contents shown in FIG. In the first embodiment, the inspection execution notification is given to the maintenance inspection fixed terminal 500 and the maintenance inspection portable terminal 400 when the inspection item addition processing unit 320 of the maintenance inspection database apparatus 300 executes the process. In Embodiment 4, an example will be described in which a notification of an abnormal state can be received at the same timing as this notification even outdoors or on the go.

  The inspection and maintenance system 10 according to the fourth embodiment is different from the first embodiment in that an e-mail delivery processing unit 340 is added to the maintenance and inspection database apparatus 300. The operation of the inspection and maintenance system 10 according to the fourth embodiment will be described with respect to parts different from the first embodiment. In the fourth embodiment, when the inspection item addition processing unit 320 of the maintenance inspection database apparatus 300 executes the process, the inspection execution notification is sent to the maintenance inspection fixed terminal 500 and the maintenance inspection portable terminal 400. The inspection item addition processing unit 320 transmits an inspection execution notification and instructs the e-mail distribution processing unit 340 to transmit a notification notifying the abnormal state of the plant equipment. In response to the instruction, the e-mail delivery processing unit 340 transmits a notification notifying the abnormal state of the plant equipment to the mail server 820 by e-mail. In FIG. 12, the inspection necessity determination processing unit 310 and the inspection item addition processing unit 320 are collectively referred to as an inspection item management processing unit 390.

  The inspection / maintenance system 10 of the fourth embodiment provides the maintenance / inspection database apparatus 300 with the e-mail distribution processing unit 340 so that the person in charge can notify the abnormal state even outdoors or on the go, and a mobile mail receiving terminal such as a mobile phone. It becomes possible to receive at. As a result, the person in charge can give an accurate instruction to the station from a remote location, thereby making it possible to prevent accidents and failures of the plant equipment.

Embodiment 5 FIG.
FIG. 13 is a block diagram of a main part of a maintenance inspection system according to Embodiment 5 of the present invention. In FIG. 15, the content of the plant signal analysis apparatus 200 in the inspection and maintenance system 10 is omitted from FIG. 2. In FIG. 13, the inspection equipment data storage unit 303 is omitted from the maintenance inspection database apparatus 300. In the first to fourth embodiments, the inspection item of the equipment that is determined to be inspected from the maintenance inspection database device 300 to the maintenance inspection portable terminal 400 and the maintenance inspection fixed terminal 500 is added, and the mechanism for urging the inspection is described. However, in the fifth embodiment, an example will be described in which an operation when the inspection result input is completed at the maintenance inspection fixed terminal 500 and the maintenance inspection portable terminal 400 is added.

  The inspection and maintenance system 10 according to the fifth embodiment is different from the first embodiment in that the inspection and inspection database apparatus 300 includes an inspection result confirmation processing unit 350, an inspection result reception processing unit 360, an e-mail distribution processing unit 340, and inspection result data. A storage unit 305 is added, an inspection end processing unit 530 is added to the maintenance inspection fixed terminal 500, and an inspection end processing unit 460 and an inspection result upload processing unit 470 are added to the maintenance inspection portable terminal 400. The operation of the inspection / maintenance system 10 according to the fifth embodiment will be described below with respect to the differences from the first embodiment.

  The maintenance inspection fixed terminal 500 stores the inspection result in the inspection result data storage unit 305 of the maintenance inspection database device 300 during the inspection end processing by the inspection end processing unit 530. On the other hand, the maintenance inspection portable terminal 400 stores the inspection result at the time of the inspection end processing by the inspection end processing unit 460. However, since the maintenance inspection portable terminal 400 cannot directly store in the inspection result data storage unit 305, the maintenance inspection portable terminal 400 The inspection result data 402 stored in the inspection portable terminal 400 is transmitted to the inspection result reception processing unit 360 in the maintenance inspection database device 300 through the inspection result upload processing unit 470. The inspection result reception processing unit 360 of the maintenance inspection database device 300 receives the inspection result data 402 transmitted from the maintenance inspection portable terminal 400 and stores it in the inspection result data storage unit 305.

  The inspection result confirmation processing unit 350 monitors the data change in the inspection result data storage unit 305. When the inspection result confirmation processing unit 350 detects the change, the inspection result confirmation processing unit 350 acquires the inspection item data from the inspection item data storage unit 302 and determines whether or not the inspection is necessary. Determination criterion data is acquired from the determination criterion data storage unit 304 via the processing unit 310. The inspection result confirmation processing unit 350 confirms whether the inspection result corresponding to the inspection item automatically registered by the inspection item addition processing unit 320 of the inspection item management processing unit 390 is included based on the acquired data. The inspection result confirmation processing unit 350 distributes an e-mail to the e-mail distribution processing unit 340 to a pre-registered e-mail address if an inspection result matching the automatically registered inspection item is included as a result of the confirmation. To instruct. In response to this instruction, the e-mail delivery processing unit 340 transmits an e-mail addressed to a pre-registered e-mail address to the e-mail server 820. The contents of the e-mail are distributed including the date and time of the inspection, the name of the device, the inspection result, and information on the abnormal value detected last time.

  The inspection / maintenance system 10 according to the fifth embodiment is capable of confirming the execution of inspection of devices requiring attention by providing the inspection result reception processing unit 360 and the inspection result confirmation processing unit 350 in the maintenance / inspection database device 300. Increasing the degree of attention to can lead to preventive maintenance. The inspection item management processing unit 390 has each configuration described in the first to fourth embodiments, and the configuration of the fifth embodiment can be applied to the second to fourth embodiments.

  In the present invention, within the scope of the invention, the components in the embodiments can be combined, or the components in the embodiments can be appropriately modified or omitted.

  DESCRIPTION OF SYMBOLS 10 ... Inspection and maintenance system, 100 ... Plant monitoring and control apparatus, 200 ... Plant signal analyzer, 220 ... Abnormality determination processing part, 300 ... Maintenance inspection database apparatus, 302 ... Inspection item data storage part, 305 ... Inspection result data storage part, 310 ... Inspection necessity determination processing unit, 320 ... Inspection item addition processing unit, 340 ... E-mail delivery processing unit, 350 ... Inspection result confirmation processing unit, 370 ... Necessity frequency search processing unit, 380 ... Inspection item exclusion processing unit, 400 ... maintenance inspection portable terminal (maintenance inspection terminal), 500 ... maintenance inspection fixed terminal (maintenance inspection terminal), 600 ... control device, 820 ... mail server 820, Th1 ... limit threshold, Th2 ... caution threshold.

Claims (9)

A maintenance inspection system that supports inspection of plant equipment managed by the plant monitoring and control device,
A plant signal analysis device that analyzes a plurality of plant signals collected from the plant equipment by the plant monitoring and control device, and an inspection target device that is the plant equipment that needs to be inspected based on an analysis result of the plant signal analysis device A maintenance inspection database device to be extracted,
The plant signal analyzing apparatus determines whether a measured value of the plant signal matches an abnormality determination condition, and notifies the maintenance inspection database apparatus of an abnormal plant signal that is the plant signal that has been determined to be abnormal. Having a processing unit,
The maintenance inspection database device
An inspection necessity determination processing unit for determining whether or not the abnormal plant signal is inspected based on the determination reference data;
An inspection item addition processing unit that adds the abnormal plant signal and the inspection item related to the abnormal plant signal to the inspection item data storage unit when the inspection necessity determination processing unit determines that the inspection is necessary. Maintenance inspection system characterized by that.   The abnormality determination processing unit measures the number of times that the measured value of the plant signal exceeds a caution threshold for determining that the measured value of the plant signal is approaching a limit threshold for determining a serious failure, and the number of times that the caution threshold is exceeded is greater than before. If the measured value of the plant signal exceeds the caution threshold value, the measured value that does not exceed the caution threshold value tends to approach the caution threshold value. The maintenance inspection system according to claim 1, wherein the plant inspection signal is determined to be the abnormal plant signal.   The maintenance inspection database device, when the abnormal plant signal has never been determined to be abnormal within a specified period, from the inspection item data storage unit, the inspection item related only to the abnormal plant signal and the abnormal plant signal. The maintenance inspection system according to claim 1, further comprising an inspection item exclusion processing unit to be excluded.   The inspection item addition processing unit notifies the maintenance inspection terminal of the presence of the inspection target device that has output the abnormal plant signal when the inspection necessity determination processing unit determines that inspection is necessary. The maintenance inspection system according to any one of claims 1 to 3. The maintenance inspection database device confirms the number of required inspections, which is the number of times that the plant signal is determined to be the abnormal plant signal for each plant signal, and the number of required inspections exceeds a specified number. In addition, the inspection item addition processing unit requests that the inspection item addition processing unit record in the inspection item data storage unit as the repair target device that has output the abnormal plant signal exceeding the specified number of times. Have
The maintenance inspection system according to claim 4, wherein the inspection item addition processing unit notifies the maintenance inspection terminal of the presence of the repair target device.   6. The maintenance inspection system according to claim 5, wherein, when the maintenance inspection terminal receives a notification of the presence of the device to be repaired, the maintenance inspection system displays a message of registration of a device requiring attention highlighted on a display unit.   When the inspection item addition processing unit adds the abnormal plant signal and an inspection item related to the abnormal plant signal to the inspection item data storage unit, the maintenance inspection database device sends an abnormality of the plant equipment to the mail server. The maintenance inspection system according to any one of claims 1 to 6, further comprising an e-mail delivery processing unit that transmits a notification notifying the state by e-mail. The maintenance inspection database device includes an inspection result data storage unit for storing inspection results sent from the maintenance inspection terminal;
Monitoring the data change of the inspection result data storage unit, and when there is a change, an inspection result confirmation processing unit for confirming whether the inspection item stored in the inspection item data storage unit is included in the inspection result;
An e-mail delivery processing unit for transmitting the e-mail of the inspection result information of the plant equipment to a mail server when the inspection result is determined to be included in the inspection result by the inspection result confirmation processing unit; The maintenance inspection system according to any one of claims 4 to 6, further comprising:   When the inspection item addition processing unit adds the abnormal plant signal and an inspection item related to the abnormal plant signal to the inspection item data storage unit, the electronic mail delivery processing unit adds the plant device to the mail server. The maintenance inspection system according to claim 8, wherein a notification informing about an abnormal state is transmitted by e-mail.

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