JP2015146088A - integrated maintenance management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an integrated maintenance management system that automatically diagnoses a plant facility as requiring an update by continuously monitoring the state of the facility and diagnosing failures.SOLUTION: In response to alarm information from a plant facility monitoring unit 202 of a monitoring control device 104 on a machine field site, a plant facility alarm diagnosis unit 204 of a maintenance management server 107 on a manufacturer side which is connected via an internet 106 analyzes the alarm information, diagnoses the state of the plant facility, returns a countermeasure, and also stores failure information to a failure database D302. An update facility diagnosis (server) unit 203 of the maintenance management server 107 searches the failure database D302 at a predetermined period, analyzes trend information indicating the transition of a failure rate of the plant facility, diagnoses the necessity to update the plant facility, and notifies the monitoring control device 104 so as to be displayed for maintenance staff 114.

Description

  The present invention relates to an integrated maintenance management system that supports operation monitoring and maintenance of a water facility plant such as a water and sewage system.

As a conventional integrated maintenance management system, a receiving / transforming equipment component management system using a communication network described in Patent Document 1 will be described.
A user who is a maintenance person of a substation uses a computer of a power receiving / transforming facility to access a web server of a service provider via the Internet. This web server incorporates a power receiving / transforming equipment part management system, and displays a menu screen for selecting a function of power receiving / transforming equipment part management after login.
Substation equipment parts management system is a parts management database, record management database, career management database, maintenance plan database, update criteria database, and customer information with processing program to import data, parts management information of the receiving substation equipment for release Consists of multiple databases such as databases.

An inspection report describing the results of the inspections carried out based on the maintenance inspection of the power receiving / transforming equipment by the user is sent to the service provider. The service provider receives the inspection report and transfers the data to the computer of the professional engineer so that the data of the inspection report can be analyzed by the professional engineer.
The specialist engineer registers the analyzed maintenance information in various databases registered in the parts management system, and informs the system administrator that the maintenance information has been registered. Confirms that the registration is successful, and notifies the user that the registration is complete.

Users can view maintenance information registered in various databases from the computers of each receiving / transforming equipment via the Internet, or download these data to the computers of each receiving / transforming equipment. Utilize equipment information for maintenance activities.
The service provider not only provides maintenance information provided by the user, but also includes new technical information and various databases of the substation equipment component management system, including information that needs to be addressed due to defects in other substation equipment. And notify the system administrator of the registration.
In addition, update information on parts lists that need to be updated or replaced is automatically distributed periodically for a preset period to provide detailed support for maintenance work that prevents missing updates. .

JP 2002-259594 A (pages 4-6, FIG. 1)

The conventional integrated maintenance management system is configured as described above, and analysis can be performed by notifying maintenance information to the system owned by the service provider. The timing of data input was the starting point, and there was no monitoring function that constantly monitored and diagnosed the operating state of equipment in real time, and contacted equipment that needed to be updated due to countermeasures or aging.
For this reason, real-time diagnosis at the time of occurrence of an event such as a failure cannot be made, and there is a problem in terms of stable operation of the equipment because the response is delayed.

  The present invention has been made to solve the above-described problems. An integrated maintenance management system that constantly monitors the state of plant equipment to diagnose failures and automatically diagnoses equipment that needs to be updated. The purpose is to obtain.

  The integrated maintenance management system according to the present invention includes a monitoring control device that monitors and controls plant equipment, and a maintenance management server that is connected to the monitoring control device through a network and diagnoses the necessity of updating plant equipment, The monitoring and control device receives data indicating the operation state of the plant equipment, monitors whether or not an abnormality has occurred, and updates the alarm information including data to the maintenance management server when the abnormality occurs, and the maintenance management server The maintenance management server analyzes the alarm information from the monitoring unit, diagnoses the state of the plant facility, and copes with it. The alarm diagnosis unit that stores alarm information and countermeasures in the fault database, and the fault database. Search by year, by analyzing the trend of the failure rate of the plant equipment to diagnose the need for updating of the plant equipment, and has a first updating equipment diagnosis unit which notifies the monitor control apparatus.

  According to the present invention, the monitoring control device that monitors and controls the plant equipment, and the maintenance control server that is connected to the monitoring control device by the network and diagnoses the necessity of updating the plant equipment, The monitoring unit that receives data indicating the operation state of the plant equipment, monitors whether or not an abnormality has occurred, and notifies the maintenance management server of alarm information including the data when the abnormality occurs, and the maintenance management server needs to be updated. The maintenance management server analyzes the alarm information from the monitoring unit, diagnoses the state of the plant facility, and sets the countermeasure to the monitoring unit. An alarm diagnosis unit that answers and stores alarm information and countermeasures in the failure database, and searches the failure database at regular intervals, Analyzes the trend of the rate, diagnoses the necessity of renewal of the plant equipment, and has a first renewal equipment diagnosis unit that notifies the monitoring and control device, so it constantly monitors the state of the plant equipment and diagnoses the failure The equipment that needs to be updated can be automatically diagnosed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a system block diagram which shows the integrated maintenance management system of the water equipment plant by Embodiment 1 of this invention. It is a functional block diagram which shows the integrated maintenance management system of the water equipment plant by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the plant equipment monitoring part and plant equipment alarm diagnostic part of the integrated maintenance management system of the water equipment plant by Embodiment 1 of this invention. It is a flowchart which shows the operation | movement of the update equipment notification of the integrated maintenance management system of the water equipment plant by Embodiment 1 of this invention. It is explanatory drawing which shows the bathtub curve of the integrated maintenance management system of the water equipment plant by Embodiment 1 of this invention. It is explanatory drawing which shows the Shuhart management figure of the integrated maintenance management system of the water equipment plant by Embodiment 1 of this invention. It is a flowchart which shows the operation | movement of the update equipment notification of the integrated maintenance management system of the water equipment plant by Embodiment 2 of this invention. It is a flowchart which shows the operation | movement of the update installation notification of the integrated maintenance management system of the water equipment plant by Embodiment 3 of this invention. It is a functional block diagram which shows the integrated maintenance management system of the water equipment plant by Embodiment 4 of this invention.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
1 is a system configuration diagram showing an integrated maintenance management system for a water equipment plant according to Embodiment 1 of the present invention.
In FIG. 1, the integrated maintenance management system includes two systems: a system installed in a machine station 101 such as a waterworks and sewerage bureau, and a system installed in a manufacturer 102 that manufactured plant equipment. The two systems are capable of two-way data communication via the Internet 106, and a firewall 105 is installed on each side in order to prevent unauthorized access from the outside.
The two systems also include security measures (not shown) such as encryption of the communication path to prevent eavesdropping of data, authentication of the other party to prevent spoofing, and electronic signatures to prevent falsification of information. Yes.

The system on the machine ground 101 side is configured as follows.
The plant equipment 112 is equipment constituting a plant such as a pump and a filter. The controller 111 collects and controls the operating state of the plant equipment 112.
The supervisory control device 104 is connected to the controller 111 via the control bus 110 so as to realize bidirectional transmission of information. Monitoring of plant data collected by the controller 111 and events occurring in the plant equipment 112 To monitor. Then, an inquiry is made to the maintenance management server 107 (to be described later) with respect to monitoring of these plant data and events occurring in the plant equipment 112, and when an answer is received, the diagnosis information is displayed on the monitor 113 (display unit).
The inspection terminal 103 is carried by the maintenance staff 114 to the plant equipment 112 at the site, inspected according to the displayed inspection items, and inputs the inspection result.

  The system on the maker 102 side includes a maintenance management server 107 that performs diagnosis in response to an inquiry from the machine 101 side system and automatic diagnosis of equipment that needs to be updated (replaced) and distributes the information. The maintenance management server 107 is monitored by the engineer 109 by the monitor 108.

FIG. 2 is a functional configuration diagram showing an integrated maintenance management system for a water equipment plant according to Embodiment 1 of the present invention.
In FIG. 2, 101-104 and 107-114 are the same as those in FIG. FIG. 2 shows a functional configuration of the monitoring control device 104 and the maintenance management server 107 in the integrated maintenance management system.
The integrated maintenance management system monitors plant equipment operating status, plant equipment alarm diagnosis to diagnose alarms such as failure, and diagnosis of plant equipment that needs to be replaced (updated) based on the transition of plant equipment failure occurrence It has each function of renewal equipment diagnosis.

Update equipment diagnosis (machine) section 201, plant equipment monitoring section 202 of monitoring control apparatus 104 of machine 101 side system, update equipment diagnosis (server) section 203 of maintenance management server 107 of manufacturer 102 side system, plant equipment alarm diagnosis section 204 is configured to perform these functions while exchanging data with each other.
That is, the plant equipment monitoring unit 202 (monitoring unit) monitors the operation state of the plant equipment. The update facility diagnosis (machine field) unit 201 (second update facility diagnosis unit) diagnoses a failure of the plant facility by using a Shuhart control chart described later.
The plant facility alarm diagnosis unit 204 (alarm diagnosis unit) performs failure diagnosis based on the alarm information from the plant facility monitoring unit 202. The update facility diagnosis (server) unit 203 (first update facility diagnosis unit) diagnoses a plant facility that needs to be updated, using trend information indicating the transition of failure occurrence.

The manufacturer 102 side system includes an equipment database D301 storing information on components of components of the plant equipment 112 of the machine ground 101 side system, a cause of failures occurring in the plant equipment 112, a failure database D302 accumulating countermeasures, an alarm A diagnosis database D304 storing diagnosis results for events, and an inspection object database D305 storing inspection items for parts in each part of the plant facility 112 are provided.
The machine station 101 side system includes a plant database D303 in which the operation state of the plant facility 112 is stored.

FIG. 5 is an explanatory diagram showing a bathtub curve of the integrated maintenance management system for a water equipment plant according to Embodiment 1 of the present invention.
In FIG. 5, time is plotted on the horizontal axis, and failure rate is plotted on the vertical axis, and an initial failure period 501, an accidental failure period 502, and a wear failure period 503 are shown. The failure rate of the accidental failure period 502 is low, and the curve has a bathtub shape.

FIG. 6 is an explanatory diagram showing a Schuhart management chart of the integrated maintenance management system for a water equipment plant according to Embodiment 1 of the present invention.
In FIG. 6, the shoe heart control chart is defined in JIS Z 9021.
FIG. 6A is a Shuhart management chart in which the vertical axis represents quality characteristic values and the horizontal axis represents group numbers (a group of data sampled at regular time intervals). As the quality characteristic value, an upper control limit (UCL) and a lower control limit (LCL) are provided above and below the center line.
6 (b) and 6 (c) show the transition of points indicating process abnormality, FIG. 6 (b) is a diagram in which two points are in the region A among three consecutive points, and FIG. 6 (c) is eight consecutive points. Is a diagram in a region beyond region C. FIG.
In the figure, A, B, and C are divided into six regions at 1σ intervals between UCL and LCL, and are sequentially designated as A, B, C, C, B, and A symmetrically about the center line.

Next, operations of the plant facility monitoring unit 202 and the plant facility alarm diagnosis unit 204 will be described with reference to FIG.
The plant facility 112 includes measuring devices for measuring the process amount such as the flow rate and temperature of water and sewage flowing through the plant, mechanical devices such as pumps and opening / closing valves for mechanically adjusting the process amount, and these mechanical devices. Various sensing devices such as a control device for controlling the sound, a sound detection device such as a microphone provided for confirming the mechanical or electrical condition of each mechanical device or control device, or a signal detection device for detecting an electric signal Equipment is provided.
From these facilities, data related to events necessary for plant monitoring is transmitted to the plant facility monitoring unit 202 via the controller 111.

The plant facility monitoring unit 202 includes a computation unit that performs computations for determining an abnormality occurring in the plant or an abnormality occurring in the facility from data regarding various received events.
For example, it is possible to calculate and evaluate the control state of process operation by comparing and referring to the data of the measuring device that measures the process amount and the command data of the control device that gives a command to the mechanical device that adjusts it. (Step S301).
At this time, when it is determined that any change has occurred in the responsiveness of the process amount to be controlled or the like (step S302), the plant facility monitoring unit 202 has event data related to the change as alarm information. The set alarm data is transmitted to the plant facility alarm diagnosis unit 204 of the maintenance management server 107 (step S303).

  The plant facility alarm diagnosis unit 204 compares the received alarm data (step S307) with the facility database D301 or the facility registration data registered in advance in the failure database D302 and the failure registration data (step S308). The failure state of the process and the condition of the abnormal plant equipment 112 are diagnosed, the cause and the countermeasure are searched according to the diagnosis result, and the result is transmitted to the plant equipment monitoring unit 202 (YES in step S309). , S310) <First solution>.

The plant equipment monitoring unit 202 that has received the information transmits the plant equipment 112 in which the alarm has occurred and the event, cause, and countermeasure to the maintenance staff 114 (step S304).
The equipment in which the alarm has occurred is displayed in a system diagram or configuration diagram pre-displayed from the plant database D303 on the monitor 113 by changing the color of the target equipment symbol to blink, and the event is displayed in a telop together with the audio output. Causes and countermeasures are displayed by specifying with pointing equipment such as mouse click.
In addition, the equipment registration data of the equipment database D301 registered equipment information such as equipment name, model, date of manufacture, parts information, manufacturer, address number of the manufacturer, address number of the department that collected the equipment information, and the like. Content. The failure registration data in the failure database D302 is a list of contents relating to process failures and device changes that have occurred in the past, and the first countermeasures and the like.

  If the alarm data and failure registration data cannot be handled, the plant facility alarm diagnosis unit 204 makes a diagnosis by comparing and referring to the received alarm data and the diagnosis registration data registered in the diagnosis database D304 (step S311). The diagnosis result regarding the abnormality of the facility is confirmed, and the result is transmitted to the plant facility monitoring unit 202 (YES in steps S312 and S313) <second coping method>.

  The alarm display means of the plant equipment monitoring unit 202 is the same as in <First countermeasure> (step S304). The diagnosis registration data is registered in advance in association with events diagnosed in the past by equipment having the same specifications as the plant equipment, and a diagnosis result equivalent to follow-up in <Third coping method> described later is obtained. This applies to the event that occurred.

If the plant equipment alarm diagnosis unit 204 cannot cope with the alarm data, the failure registration data, and the diagnosis registration data, and cannot identify the cause of the process failure or equipment change, the monitor of the engineer 109 in charge of the manufacturer 102 The alarm data is displayed as a quick report at 108 together with a voice notifying the occurrence of the alarm data.
The responsible engineer 109 refers to the inspection object data D305 for examining the cause of the equipment in which the alarm has occurred, or searches the failure database D302 for similar cases based on the alarm data equipment or event. Or, the design information and technical information possessed by the engineer in charge 109 are utilized, and the inspection target part and inspection items for the cause investigation are examined as the diagnosis result (step S314).
The engineer 109 in charge inputs the examined inspection target part and the inspection item as the investigation request information item, so that information is transmitted from the plant facility alarm diagnosis unit 204 to the plant facility monitoring unit 202 (No in steps S315 and S317).

Receiving the information, the plant equipment monitoring unit 202 displays the survey request on the monitor 113 and notifies the maintenance staff 114, and then automatically transfers the inspection target part and the inspection item to the inspection terminal 103 (step S305).
The maintenance worker 114 carries the inspection terminal 103, goes to the site, and inputs the state of the plant equipment 112 with respect to the inspection item of the inspection target part to the inspection terminal 103 (step S306), thereby via the plant equipment monitoring unit 202. The plant facility alarm diagnosis unit 204 is notified of feedback, and the responsible engineer 109 analyzes the cause while referring to the result (step S318).

These procedures are repeated until the cause can be identified, and diagnosis and treatment responses to the alarm are possible (steps S315 Yes and S316) <Third countermeasure>.
The plant equipment, event, cause, countermeasure, inspection target part, and inspection target item of the alarm diagnosed by the plant equipment alarm diagnosis unit 204 are accumulated in the failure database D302 and the diagnostic database D304 each time diagnosis is performed, and subsequent diagnosis Used for

Next, operations of the update facility diagnosis (machine) unit 201 and the update facility diagnosis (server) unit 203 will be described with reference to FIG.
As described above, the alarm information received by the plant facility alarm diagnosis unit 204 is stored in the failure database D302 every time an event occurs and a diagnosis is made.
The updated facility diagnosis (server) unit 203 of the maintenance management server 107 searches the failure database D302 at a predetermined time every day, and sums up alarm information generated by components in the plant facility 112 for each plant facility, and calculates a failure rate. To do.
The update facility diagnosis (server) unit 203 analyzes the trend of the failure rate from the past to the present, and diagnoses the facility that needs to be updated (replaced).

The trend of the failure rate seen in equipment that needs to be updated is a transition called a bathtub curve as shown in FIG. That is, the transition of the failure rate is classified into an initial failure period 501, an accidental failure period 502, and a wear failure period 503. In the initial failure period 501, there are defects in design and manufacturing at a relatively early time after the start of use. Failures that occur due to incompatibility of the usage environment occur.
The next accidental failure period 502 is a failure that is found in the stable period and maintains a constant value while the failure rate is decreasing, and the last wear failure period 503 is that the failure rate increases at a time when aging deterioration is seen.

The update facility diagnosis (server) unit 203 automatically determines the facility that has reached the wear failure period 503 by trend analysis (steps S401, S402 Yes), and the update facility diagnosis (machine field) unit 201 needs to be updated with the plant facilities and failures. The trend data of the rate is notified (step S403).
The updated equipment diagnosis (machine) unit 201 that has received the information displays the plant equipment 112 that needs to be replaced on the monitor 113 (step S404), and is displayed together with the trend graph used for the determination, and notifies the maintenance personnel 114.

In the above, as a method for determining the stable operation of the plant facility 112, a method is described in which the data of the measuring device that measures the process amount is compared with the command data of the control device that gives a command to the mechanical device that adjusts the data. The update facility diagnosis (machine field) unit 201 provides a function of performing a statistical diagnosis of an operation state using the Schuhart chart defined in JIS Z 9021 shown in FIG.
That is, when a transition of points as shown in “Transition of points indicating process abnormality” in FIGS. 6B and 6C is found in the measured data, the process abnormality is statistically updated, that is, updated (exchanged). Is determined to be necessary equipment.

The update facility diagnosis (machine) unit 201 collects data on the operation state such as data of a measuring device for measuring the process amount of the plant facility 112 through the controller 111 or the control bus 110 for 24 hours online, while the plant database D303 (Step S408).
Then, every time accumulation is performed, the measured value data in the plant database D303 is sampled for a certain period of time for the volume data generated by the plant equipment 112, and the average value is plotted in time series. The plotted points are checked (step S405), the plant equipment corresponding to the following check items (1) and (2) is diagnosed as abnormal equipment (step S406 Yes), and displayed on the monitor 113 to notify the maintenance personnel 114 (Step S407).

(1) As shown in FIG. 6B, out of 3 consecutive points, 2 points are in the area A, that is, if there are 2 or more points in 3 consecutive points that are close to the upper limit of management and lower limit of management, to decide.
(2) As shown in FIG. 6C, when 8 consecutive points exceed the region C, that is, when there are 8 or more values exceeding the area near the average, it is determined as abnormal.

According to the first embodiment, the process situation associated with the operation and the coping method targeted for the event indicating the failure or the sign thereof are searched and automatically notified to the maintenance staff, so that the avoidance of the malfunction of the plant is promoted. An effect is obtained, and a quick response in such a situation becomes possible.
In addition, facilities that need to be updated (replaced) are automatically diagnosed and notified to maintenance personnel before failure occurs, so that stable operation of plant facilities that are not allowed to stop is ensured.

Embodiment 2. FIG.
FIG. 7: is a flowchart which shows the operation | movement of the update equipment notification of the integrated maintenance management system of the water equipment plant by Embodiment 2 of this invention.
In FIG. 7, steps S401 to S408 are the same as those in FIG. In FIG. 7, a failure history database D306 is provided in the plant facility alarm diagnosis unit 204, and a failure trend search function (step S701) is provided in the updated facility diagnosis (machine field) unit 201.

  In the first embodiment, the update facility diagnosis (machine station) unit 201 and the update facility diagnosis (server) unit 203 change the failure rate in the plant facility 112 of the machine station 101 from the plant facility that is suitable for the wear failure period 503. The case where automatic diagnosis is performed and the maintenance staff 114 is notified of the plant equipment that needs to be updated (replaced) has been described. In the second embodiment, the current plant equipment is installed at the repair plan time that the maintenance staff 114 periodically performs. By searching the state 112, the repair target equipment is determined.

In the operations of the update facility diagnosis (machine field) unit 201 and the update facility diagnosis (server) unit 203 according to the second embodiment, as shown in FIG. 7, the update facility diagnosis (server) unit 203 performs step S401. The trend state of the failure rate is stored in the failure history database D306.
The updated facility diagnosis (machine field) unit 201 performs a failure trend search (step S701) for searching for a failure trend (trend of failure rate) of the current plant facility 112 in the failure history database D306, thereby obtaining the current plant facility. 112 repair target facilities are now indexed.

  According to the second embodiment, this makes it possible to determine the facility to be repaired by searching the current state of the plant facility 112 during the repair plan period periodically performed by the maintenance personnel 114, and a failure occurs. The plant equipment can be replaced in advance and the plant equipment can be operated stably.

Embodiment 3 FIG.
FIG. 8: is a flowchart which shows the operation | movement of the update equipment notification of the integrated maintenance management system of the water equipment plant by Embodiment 3 of this invention.
In FIG. 8, steps S401 to S408 and S701 are the same processing as in FIG. In FIG. 8, the replacement facility diagnosis (machine field) unit 201 is provided with the replacement facility search function (step S801), and the plant facility alarm diagnosis unit 204 is provided with the replacement facility diagnosis function (step S802).

  In the first and second embodiments, the update facility diagnosis (machine field) 201 and the update facility diagnosis (server) unit 203 have the plant facilities that have passed the wear failure period 503 from the transition of the failure rate in the plant facility 112 of the machine field 101. The automatic diagnosis and the failure trend search have been described. In the third embodiment, the replacement facility search function (step S801) for searching for a replacement facility (new facility) is performed in the update facility diagnosis (machine) unit 201, and the update facility diagnosis is performed. A replacement facility diagnosis function (step S802) is added to the (server) unit 203.

When the maintenance staff 114 makes an inquiry to the replacement equipment diagnosis function (step S802) of the manufacturer 102 by using the replacement equipment search function (step S801) when performing a failure or equipment update, the replacement equipment diagnosis function (step In step S802), the facility database D301 is used to diagnose the facility and return the result.
As a result, the maintenance staff 114 can inquire of the maker 102 about the equipment to be replaced when performing a failure or equipment update, and can obtain an answer from the maker 102 regarding recommended information on the replacement equipment.

  According to the third embodiment, the maintenance staff 114 can inquire the manufacturer 102 about the equipment to be replaced when performing a failure or equipment update, and can obtain an answer from the manufacturer 102 regarding information on the recommended replacement equipment. Equipment selection can be done smoothly.

Embodiment 4 FIG.
FIG. 9 is a functional configuration diagram showing an integrated maintenance management system for a water equipment plant according to Embodiment 4 of the present invention.
In FIG. 9, 101-104, 107-114, 201-204, D301-D305 are the same as those in FIG. In FIG. 9, the machine 101 exists from the machine 1 to the machine M. A machine field that uses equipment is registered in the equipment database D301. In the event of equipment failure, the equipment, phenomenon, cause, and countermeasures in which the failure occurred are horizontally deployed at the machine that uses the equipment.

  In the first embodiment, a case has been described in which diagnosis is performed to answer the cause and the countermeasure for an event occurring in the plant facility. However, in the fourth embodiment, as shown in FIG. The machine 101 that uses the plant equipment is registered in the database D301. The maintenance management server 107 can be connected to the monitoring control devices 104 of the plurality of machine stations 101, and the plant facilities, phenomena, causes, and countermeasures of the failure that has occurred to the machine station 101 that uses the plant equipment in which the failure has occurred. The law was sent automatically.

  According to the fourth embodiment, the maintenance staff 114 of the machine shop that has the plant equipment that has not yet failed can know in advance how to deal with the failure, and can smoothly perform the replacement or failure. Therefore, it is possible to perform various measures and lead to stable operation of the plant equipment.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

101 Machine, 102 Manufacturer, 103 Inspection terminal, 104 Monitoring and control device,
105 firewall, 106 internet, 107 maintenance management server,
108 monitor, 109 engineer, 110 control bus, 111 controller,
112 plant equipment, 113 monitor, 114 maintenance personnel,
201 update equipment diagnosis (machine) section, 202 plant equipment monitoring section,
203 Update facility diagnosis (server) unit, 204 Plant facility alarm diagnosis unit,
D301 equipment database, D302 failure database,
D303 plant database, D304 diagnostic database,
D305 Inspection object database, D306 Failure history database.

Claims (5)

A monitoring and control device for monitoring and controlling plant equipment,
And a maintenance management server that is connected to the supervisory control device via a network and diagnoses the necessity of updating the plant equipment,
The monitoring control device
A monitoring unit that receives data indicating the operation state of the plant equipment, monitors whether or not an abnormality has occurred, and notifies the maintenance management server of alarm information including the data when the abnormality occurs,
A display unit that displays the plant equipment diagnosed as needing updating by the maintenance server to maintenance personnel;
The maintenance management server
Analyzing the alarm information from the monitoring unit, diagnosing the state of the plant equipment, answering the countermeasure to the monitoring unit and storing the alarm information and the countermeasure in a failure database;
Searching the failure database at regular intervals, analyzing the trend of failure rate of the plant equipment, diagnosing the necessity of updating the plant equipment, and notifying the monitoring and control device, a first updated equipment diagnostic unit; An integrated maintenance management system characterized by comprising: The monitoring control device
A second update facility for diagnosing the plant facility as abnormal when the data indicating the operation state of the plant facility is time-series and there is a predetermined number of data close to the upper limit value or the lower limit value indicating the control limit of the data The integrated maintenance management system according to claim 1, further comprising a diagnosis unit.   The first updated facility diagnosis unit analyzes the trend of the failure rate of the plant facility, stores the trend information of the failure rate of the plant facility in a failure history database, and can refer to the monitoring control device from time to time. The integrated maintenance management system according to claim 1 or 2, wherein the system is configured as described above.   The first update facility diagnosis unit provides information on a new facility that replaces the plant facility to be updated in response to an inquiry from the monitoring control device. The integrated maintenance management system according to one item. The monitoring control device is provided for each of a plurality of plant facilities,
5. The maintenance management server transmits the alarm information and a countermeasure to another monitoring control device that monitors and controls the same plant equipment as the plant equipment in which the abnormality has occurred. The integrated maintenance management system as described in any one of.

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