JP2008191900A - Reliability-oriented plant maintenance operation support system, and operation support method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reliability-oriented plant maintenance operation support system, enabling easy introduction of reliability-oriented maintenance, and enabling improved safety of the plant with a reduced maintenance cost through the above reliability-oriented maintenance. <P>SOLUTION: The reliability-oriented plant maintenance operation support system includes: a plant system deployment database 11 for managing a system guaranteeing a plant safety function, etc.; a system function development database 12 for managing the function guaranteed by each system managed by the above database 11; a configuration device database 13 for managing a device relevant to the function registered in the above database 12; a device function failure database 14 for managing a function failure mode, etc. relevant to the individual device registered in the above database 13; and a maintenance importance degree decision logic 15 for deciding the degree of maintenance importance of the device from the information managed in the database 14. Based on the decision result by the above logic, a maintenance system of the device is extracted using a device failure mode influence evaluation database 16 or a maintenance template 18, and then is stored in a device maintenance program database 17 and managed, as a maintenance program. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a plant reliability-oriented maintenance operation support system and a plant reliability which are supported when creating maintenance programs for various plants such as nuclear power plants, thermal power plants, and chemical plants based on reliability-oriented maintenance. This is related to a method for supporting maintenance-oriented maintenance operations.

  In the maintenance of nuclear power plants from the past to the present, time-planned maintenance (TBM) is carried out, in which equipment is inspected at intervals determined as preventive maintenance for most equipment. Most of this is done during regular plant inspections.

  In TBM, the period of overhaul and inspection must be set shorter than the original equipment life, so over-maintenance increases maintenance costs, and overhaul is performed regardless of the equipment deterioration state. There is a problem that it is easy to generate so-called mess and breakage that causes a failure in the process of disassembling and assembling for a device that does not have the problem. In addition, since many operations are concentrated during the periodic inspection for several months, the process is complicated and troubles are likely to occur. Therefore, the periodic inspection process cannot be shortened, improving the plant operating rate. There is also a problem that is difficult.

  In recent years, in order to improve these problems, optimization of maintenance methods including introduction of reliability-oriented maintenance (RCM) and state monitoring maintenance (CBM), which have been proven in other industries such as petrochemicals and nuclear power plants in the United States Has been tried.

  In RCM, maintenance resources are distributed to important equipment for safety and power supply, which are requirements for nuclear power plants, and monitoring and repairs are focused on. For other equipment, maintenance that is commensurate with costs, etc. It is characterized by doing. For this reason, in RCM, in order to extract important devices, the function requirements of the entire system are expanded into the function requirements of individual devices from the information of the system and the components of the devices and the required functions. It is important to maintain each device in combination with the impact on safety, power generation, cost, etc. due to loss of function (impact), ease of occurrence of loss of function (occurrence), whether loss of function can be detected (detectability), etc. Degree is defined. For the equipment having a high maintenance importance, the function of the equipment is further expanded to the function of the component part, and the deterioration / failure mode for each part is extracted. For this deterioration / failure mode, a maintenance method is selected by evaluating the impact of failure, the possibility of detection / diagnosis, and the possibility of maintenance / repair based on design information, maintenance history, trouble information, etc. Is done.

  In general, depending on the maintenance importance of the above-mentioned device, preventive maintenance is selected as a maintenance method for a highly important device and post-maintenance (BDM) is selected as a maintenance method for a less important device. In addition, even in the case of component parts having a high degree of maintenance importance, a maintenance method may be selected for each part from the analysis result of the deterioration / failure mode. In this procedure, failure mode effect analysis (FMEA) is generally used in order to analyze the deterioration / failure mode without omission when developing the functional requirements of the equipment to the component level.

As described in Patent Documents 1, 2, and 3 as described above, the above attempts have been made in plant-related industries, transportation-related industries, etc. as reliability-oriented maintenance methods. Attempts have been made to determine the maintenance method logically or numerically based on the functions of, the cause of failure, the influence of failure, and the like.
JP 2004-252549 A JP 2002-140446 A JP 2000-2785 A

  However, the above-described conventional reliability-oriented maintenance method has the following problems. In other words, there are a huge number of parts in a nuclear power plant, but in order to ensure the reliability of maintenance work, it is necessary to extract important equipment and parts without omission, and the RCM method is a system for the entire plant. In addition, the amount of work becomes enormous because it must be comprehensively implemented for the equipment. However, the technique described in the above patent document does not attempt to save work. In particular, the design of nuclear power plants is standardized. Therefore, a method for saving labor is required when paying attention to the fact that there are many plants with the same basic design and slightly different details.

  In addition, when applying the RCM method not only to a nuclear power plant but also to the entire plant, from the request for the plant function to the request for the function of the system that constitutes the plant, the function at the equipment and component level that constitutes the system The analysis will be subdivided into demands and failure degradation modes. For this reason, the worker is required not only to know the system design in general, but also to knowledge about equipment and parts, and division of labor is required on the upstream side and downstream side of the analysis. Therefore, for example, when the same type of equipment exists in many systems, the work may be duplicated. Further, for example, when the analysis of the device is reviewed during the work, the review work must be performed for all the similar devices, so that a return work occurs. Furthermore, since the amount of data is enormous, there is also a problem that it is difficult to understand how deterioration / failure of individual parts affects the functions of the entire plant.

  Furthermore, the maintenance program obtained by applying the RCM method is based on the uncertainty of the data used for the evaluation in the RCM method (data fluctuations, new knowledge, changes in the importance of equipment due to the introduction or modification of new technology, etc.) It is not perfect. For this reason, there is a problem that the maintenance program must always be corrected by applying feedback using the inspection result and monitoring result of the equipment, which is the result of executing the maintenance program.

  The object of the present invention has been made in consideration of the above-mentioned circumstances, can facilitate the introduction of reliability-oriented maintenance, and realizes improvement of plant safety and reduction of maintenance costs by this reliability-oriented maintenance. An object of the present invention is to provide a plant reliability-oriented maintenance operation support system and a plant reliability-oriented maintenance operation support method.

  The present invention relates to a plant system development database for classifying and managing systems that guarantee plant safety functions, etc. in a plant reliability-oriented maintenance operation support system that supports the creation of a plant maintenance program based on reliability-oriented maintenance, and , A system function development database for classifying and managing functions secured by individual systems managed in this plant system development database, and a component equipment for classifying and managing equipment related to functions registered in this system function development database Database, device function failure database that manages functions related to individual devices registered in this component device database, their function failure modes, and information related to each function failure mode, and information managed in this device function failure database Maintenance importance determination to classify and determine the maintenance importance of equipment The equipment maintenance method is extracted using a database in which the maintenance method of the equipment is managed based on the determination result by the maintenance importance determination logic, and the extraction result is used as a maintenance program as the equipment maintenance program database. It is characterized by being configured to be stored and managed in

  According to the present invention, data required when creating a maintenance program for a plant based on reliability-oriented maintenance is databased in each of a plant system development database, a system function development database, a component equipment database, and an equipment function failure database. Are managed efficiently. For this reason, compared to the case where the maintenance program is mechanically created using the data from the upstream plant system to the downstream maintenance program as one piece of data, the maintenance program is managed using the data managed in each database described above. As a result, maintenance program creation work can be saved, and as a result, introduction of reliability-oriented maintenance can be facilitated. Therefore, this reliability-oriented maintenance can both improve plant safety and reduce maintenance costs.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a part of an embodiment (maintenance program creation function part) in a plant reliability-oriented maintenance operation support system according to the present invention. FIG. 2 is a block diagram showing the remaining part of the embodiment (maintenance program check / correction function part) in the plant reliability-oriented maintenance operation support system according to the present invention.

  The plant-oriented maintenance support system 10 of this embodiment supports the creation of a maintenance program for a plant (in this embodiment, a nuclear power plant) based on reliability-oriented maintenance, and It helps to modify the created maintenance program.

  As shown in FIG. 1, the maintenance program creation support function includes a plant system development database (DB) 11, a system function development database (DB) 12, a component equipment database (DB) 13, an equipment function failure database (DB) 14, The maintenance importance determination logic 15 and a database (device failure mode influence evaluation database (DB) 16 and maintenance template 18) in which the maintenance method of the device is managed are provided. The maintenance method of the device is extracted from the failure mode influence evaluation database 16 or the maintenance template 18, and the extraction result is realized as a maintenance program stored in the device maintenance program database (DB) 17 and managed.

  The plant system development database 11 classifies and manages systems that guarantee the safety function and power generation function of a nuclear power plant, and an example thereof is shown in FIG. As shown in FIG. 3, the plant system development database 11 includes a unique system number and / or system name in a nuclear power plant, and both, and definitions of required functions (PS-1, PS-2,. 1, MS-2 ...).

  The system function development database 12 shown in FIG. 1 is used to classify and manage functions secured by individual systems managed in the plant system development database 11, and an example thereof is shown in FIG. As shown in FIG. 4, the system function development database 12 stores a plant name and the number or name of the system, and defines functions for the system. This database is linked to the plant system development database 11 by a system number or system name.

  The component device database 13 shown in FIG. 1 is used to classify and manage devices related to functions registered in the system function development database 12, and an example thereof is shown in FIG. As shown in FIG. 6, the configuration device database 13 stores the device number and / or name of the corresponding device, the function secured by the device, the classification of the function, and the like.

  When creating this component device database 13, as shown in FIG. 1, a piping instrumentation diagram (P & ID: PIPE & Instrumentation Diagram; FIG. 5) is stored in a piping instrumentation diagram database (DB) 19. Registered in the system function development database 12 on the single-line diagram stored in the single-line diagram database (DB) 20 or the instrument block diagram stored in the instrument block diagram database (DB) 21 For each function that has been performed, the range related to securing the function is colored to extract the device related to the function.

  For example, as shown in FIG. 5, a pipe 103 is connected from the suppression chamber 101 to a reactor pressure vessel 102 in the reactor containment vessel 100, and a motor operated valve 104, a pump 105, and a sensor are connected to the pipe 103 from the suppression chamber 101 side. 110, check valve 106, sensors 111, 112, 113, 114, motorized valve 107, check valve 108, valve 109, and other devices are installed, the functions registered in the system function development database 12 are secured. In addition, by coloring the related piping 103 and the range of devices, the devices related to the function are extracted using a piping list database and a device list database (not shown). This extraction may be performed on a drawing (paper drawing), and when P & IDCAD is available, the CAD function is used, for example, the function is classified (colored) on the screen and linked to the screen. It is also possible to automatically extract the device number electronically.

  The device functional failure database 14 shown in FIG. 1 manages functions related to individual devices registered in the component device database 13, failure modes of the functions, and information related to the respective functional failure modes. Is shown in FIG. As shown in FIG. 7, the information related to each functional failure mode includes the degree of influence on the plant system function (that is, the safety function and the power generation function), the number of occurrences in the past, and the possibility of detection. The possibility of repair.

  The maintenance importance level determination logic 15 shown in FIG. 1 includes information related to the functional failure mode among the information managed in the device functional failure database 14 (that is, the degree of influence of the device functional failure on the safety function of the plant). From the information on the influence on the power generation function, the number of occurrences in the past, the possibility of detection, the possibility of repair, etc.), as shown in FIG. This maintenance importance classification includes important equipment, preventive maintenance equipment, and subsequent maintenance equipment.

  That is, the maintenance importance level determination logic 15 uses the information (FIG. 7) related to the functional failure mode registered in the device functional failure database 14 for each device registered in the component device database 13. It is determined whether or not a functional failure of (1) directly affects system functions (safety function, power generation function) (S1). If the functional failure affects the system function in step S1, it is next determined whether the possibility of the functional failure of the device is high or low (S2). If it is determined in step S2 that the possibility of equipment failure is high, the equipment is determined to be an important equipment.

  If the possibility of equipment failure is low in step S2, the possibility of equipment failure detection and the possibility of repair are further determined (S3). In this step S3, when the possibility of detecting a device failure and the possibility of repair are low, the device is determined as an important device, and in other cases, the device is determined as a preventive maintenance device.

  If the device malfunction does not directly affect the system function in step S1, it is next determined whether the possibility of the device malfunction is high or low (S4). In this step S4, when the possibility of equipment failure is low, the equipment is determined to be a post-maintenance equipment.

  If it is determined in this step S4 that the possibility of equipment failure is high, the possibility of equipment failure detection and the possibility of repair are further judged (S5). In this step S5, when the possibility of detecting a device failure and the possibility of repair are low, it is determined that the device is a preventive maintenance device. In other cases, the device is determined as a post-maintenance device. .

  In addition, about each information for evaluating maintenance importance, the optimal maintenance will be pursued for every plant by adding, deleting, and correcting an item by the circumstances for every nuclear power plant. In this case, the maintenance importance level determination logic 15 is changed as appropriate. The determination by the maintenance importance determination logic 15 may be performed by an operator or may be performed by a computer.

  The equipment failure mode impact assessment database 16 shown in FIG. 1 is for managing by classifying component failure failure modes, occurrence frequencies, current maintenance methods, etc., for each equipment functional failure mode. As shown in FIG. Since the device failure mode influence evaluation database 16 can obtain similar results for each model (device type), standard data is created in advance for each model or device, and the standard device failure mode influence evaluation database (DB) is created. ) 26 (FIG. 1). The equipment failure mode influence evaluation database 16 is created by taking in the database of the corresponding equipment from the standard equipment failure mode influence evaluation database 26.

  The maintenance template 18 shown in FIG. 1 defines and manages a maintenance method for each model (device type), and an example thereof is shown in FIG. In this maintenance template 18, a maintenance method is defined for each device corresponding to the device state classification. Since this maintenance template 18 provides similar results for each model (device type), standard data is created in advance for each model or device and stored in the standard maintenance template database (DB) 28 (FIG. 1). Store it. The maintenance template 18 is created by fetching data of the corresponding model from the standard maintenance template database 28.

  A device maintenance method is extracted from the device failure mode influence evaluation database 16 for the device determined to be an important device by the maintenance importance determination logic 15, and this maintenance method is stored and managed in the device maintenance program database 17. . In addition, for a device determined to be a preventive maintenance device by the maintenance importance determination logic 15, a device maintenance method is extracted using the maintenance template 18, and this maintenance method is stored and managed in the device maintenance program database 17. In addition, the device maintenance program database 17 manages that the device evaluated as the “subsequent maintenance device” by the maintenance importance determination logic 15 is the subsequent maintenance as the device maintenance method.

  An example of the device maintenance program database 17 is shown in FIG. The maintenance method managed in the equipment maintenance program database 17 includes time-planned maintenance (TBM: Time Based Maintenance; for example, overhaul inspection) that performs maintenance at regular intervals, and equipment status is monitored and maintenance is performed when necessary. Condition monitoring maintenance (CBM; Condition Based Maintenance; for example, vibration diagnosis, performance check, etc.) and post-maintenance.

  The extraction of the device maintenance method using the device failure mode vote influence evaluation database 16 or the maintenance template 18 is performed by the operator. The work by the worker includes not only the extraction of the maintenance method but also the creation of various databases 11, 12, 13, 14, 16, 17, 18, 26, 28.

  Maintenance of the equipment of the nuclear power plant is performed using the maintenance program created as described above and managed in the equipment maintenance program database 17. As described above, the reliability-oriented maintenance operation support system 10 of this plant has a function of checking the effectiveness of the maintenance program managed in the equipment maintenance program database 17 and supporting correction. As shown in FIG. 2, this maintenance program correction support function includes a pre-inspection maintenance database (DB) 31, an equipment state monitoring database (DB) 32, an equipment operation history database (DB) 33, and an equipment medical record management database (DB). 34, an equipment nonconformity management database (DB) 35, an evaluation unit 36, and a re-evaluation unit 37.

  The pre-inspection maintenance database 31 manages data measured and inspected before inspection maintenance for the devices that have been subjected to time-planned maintenance (TBM) among the maintenance methods managed in the device maintenance program database 17. The device state monitoring database 32 manages state monitoring data for devices that have been subjected to state monitoring maintenance (CBM) among the maintenance methods managed by the device maintenance program database 17. Further, the device operation history database 33 manages device operation data related to the device state monitoring database 32.

  The equipment chart management database 34 organizes and manages the data of the three databases, the pre-inspection database 31, the equipment state monitoring database 32, and the equipment operation history database 33, in units of equipment. The equipment nonconformity management database 35 manages equipment failures, and an example thereof is shown in FIG. This equipment nonconformity management database 35 manages equipment in which a failure (nonconformity) has occurred, its occurrence time, the state of failure, and the like.

  The evaluation unit 36 shown in FIG. 2 evaluates the maintenance effectiveness of the equipment, that is, the equipment failure rate, the state / performance deterioration rate, etc., using the data in the equipment medical record management database 34 and the equipment nonconformity management database 35. Further, the evaluation unit 36 evaluates the maintenance effectiveness of the system having the equipment whose maintenance effectiveness is evaluated, and the maintenance effectiveness of the entire plant having the system whose maintenance effectiveness is evaluated. These maintenance effectiveness levels are the failure rate of the system and plant, the state / performance deterioration rate, and the like. As an evaluation method in the evaluation unit 36, statistical evaluation or probabilistic evaluation is used.

  The re-evaluation unit 37, when the equipment maintenance effectiveness, the system maintenance effectiveness, and the plant maintenance effectiveness evaluated by the evaluation unit 36 deviate from the preset management target values 41, 42, and 43, respectively. In addition to outputting an alarm, a device to be re-evaluated in the maintenance method is extracted from the device functional failure database 14 and a correction is presented. For example, the re-evaluation unit 37 presents the equipment malfunction database 14 shown in FIG. 7 with the possibility that the equipment malfunction is detected as “low” to “high”, or the number of equipment malfunctions generated. Presents a correction. The management target values 41, 42, and 43 are threshold values such as a failure rate, for example.

  Therefore, according to the present embodiment, the following effects (1) and (2) are obtained.

  (1) Data necessary for creating a nuclear power plant maintenance program based on reliability-oriented maintenance is stored in each of the plant system development database 11, the system function development database 12, the component equipment database 13, and the equipment function failure database 14. It is databased and managed efficiently. For this reason, the maintenance program creation work can be saved by creating the maintenance program using the data managed in each of these databases.

  For example, by creating the system function development database 12 separately from the plant system development database 11, this similar plant can be fine-tuned with respect to a similar different plant by finely adjusting the already created system function development database 12. It is possible to create the system function development database 12 corresponding to the above. In addition, when a failure occurs in a device of a certain plant or system, the corrected device function failure database 14 can be applied to another plant by correcting the device function failure database 14 of the device. Furthermore, necessary data is taken from each of the standard equipment failure mode impact assessment database 26 and the standard maintenance template database 28 in which standard data is stored for each model or equipment, and the equipment failure mode impact assessment database 16 and the maintenance template 18 are created. Therefore, it is possible to easily create the equipment failure mode influence evaluation database 16 and the maintenance template 18.

  As a result, it is possible to save labor for creating a maintenance program for a plurality of plants, and as a result, introduction of reliability-oriented maintenance can be facilitated. Therefore, this reliability-oriented maintenance can both improve plant safety and reduce maintenance costs.

  (2) The plant reliability-oriented maintenance operation support system 10 has a function for checking the effectiveness of the created maintenance program and supporting correction, so that the inspection result of the equipment, which is the result of execution of the maintenance program, The maintenance program is corrected by feeding back the monitoring results, so that appropriate reliability-oriented maintenance can always be performed.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this. For example, although the case where the plant is a nuclear power plant has been described in the present embodiment, the present invention can also be applied to other plants such as a thermal power plant and a chemical plant.

The block diagram which shows a part (maintenance program creation functional part) of one Embodiment in the reliability important maintenance operation support system of the plant which concerns on this invention. The block diagram which shows the remaining part (check / correction function part of a maintenance program) of one Embodiment in the reliability operation maintenance support system of the plant which concerns on this invention. Explanatory drawing which shows an example of the plant system expansion | deployment database in FIG. Explanatory drawing which shows an example of the system | strain function expansion | deployment database in FIG. Explanatory drawing which shows an example of the component apparatus extraction stored in the component apparatus database in FIG. Explanatory drawing which shows an example of the component apparatus database in FIG. Explanatory drawing which shows an example of the apparatus function failure database in FIG. The flowchart which shows the maintenance importance determination logic in FIG. Explanatory drawing which shows an example of the apparatus failure mode influence evaluation database in FIG. Explanatory drawing which shows an example of the maintenance template in FIG. Explanatory drawing which shows an example of the apparatus maintenance program database in FIG. Explanatory drawing which shows an example of the apparatus nonconformity management database in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Plant reliability emphasis maintenance operation support system 11 Plant system expansion database 12 System function expansion database 13 Component equipment database 14 Equipment function failure database 15 Maintenance importance determination logic 16 Equipment failure mode influence evaluation database 17 Equipment maintenance program database 18 Maintenance template 19 piping instrumentation diagram (P & ID) database 20 single-line diagram database 21 instrument block diagram database 26 standard equipment failure mode impact assessment database 28 standard maintenance template database 31 pre-inspection maintenance database 32 equipment condition monitoring database 33 equipment operation history database 34 Device chart management database 35 Device nonconformity management database 36 Evaluation unit 37 Re-evaluation units 41, 42, 43 Management target value

Claims (11)

In a plant reliability-oriented maintenance operation support system that supports the creation of plant maintenance programs based on reliability-oriented maintenance,
A plant system development database that classifies and manages systems that guarantee the safety functions of the plant,
A system function development database for classifying and managing functions secured by individual systems managed in this plant system development database;
A component device database for classifying and managing devices related to functions registered in this system function development database;
A function related to each device registered in the component device database, a function failure mode thereof, and a device function failure database for managing information related to each function failure mode; and
Maintenance importance determination logic for classifying and determining the maintenance importance of equipment from the information managed in this equipment functional failure database,
Based on the determination result by the maintenance importance determination logic, the device maintenance method is extracted using the database in which the device maintenance method is managed, and the extraction result is stored and managed in the device maintenance program database as a maintenance program. A plant-oriented maintenance operation support system emphasizing the reliability of the plant, From the information managed in the equipment functional failure database, the maintenance importance level of the equipment is determined using the maintenance importance level judgment logic, and classified into important equipment, preventive maintenance equipment, and subsequent maintenance equipment.
Further, the database in which the maintenance method of the device is managed is a device failure mode influence evaluation database that classifies and manages the deterioration failure mode of component parts, occurrence frequency, current maintenance method, etc. for each functional failure mode of the device, A maintenance template that prescribes and manages maintenance methods for each model.
For the devices determined to be important devices by the maintenance importance determination logic, the maintenance method of the device is extracted using the device failure mode impact assessment database, and is also determined as the preventive maintenance device by the maintenance importance determination logic. The plant reliability-oriented maintenance operation support system according to claim 1, wherein the maintenance method of the device is extracted using the maintenance template. The component equipment database is colored on the piping instrumentation diagram, which is one of the main drawings of the plant, for each function registered in the system function development database by coloring the relevant range in securing the function. 3. The plant reliability-oriented maintenance operation support system according to claim 1 or 2, wherein equipment related to the function is extracted and created. The information related to the functional failure mode managed in the device functional failure database is that the functional failure of each device is the degree of influence on the system function of the plant, the number of occurrences in the past, detectability, repairability, etc. The plant reliability-oriented maintenance operation support system according to any one of claims 1 to 3. The plant failure mode impact assessment database is created using a standard device failure mode impact assessment database created in advance for each model, and the plant reliability emphasis is placed on any one of claims 1 to 4. Maintenance operation support system. 6. The plant reliability-oriented maintenance operation support system according to claim 1, wherein the maintenance template is created using a standard maintenance template database created in advance for each model. The maintenance method managed in the equipment maintenance program database is applied to time-planned maintenance in which maintenance is performed at regular intervals, and state monitoring maintenance in which equipment status is monitored and maintenance is performed at a necessary time. 7. A maintenance operation support system that emphasizes reliability of the plant according to any one of 1 to 6. Among maintenance methods managed in the equipment maintenance program database, a database before inspection maintenance that manages data measured and inspected before inspection maintenance for equipment that has undergone time-planned maintenance;
Among the maintenance methods managed in the device maintenance program database, a device state monitoring database that manages state monitoring data for devices that have been subjected to state monitoring maintenance, and
A device operation history database for managing device operation data related to the device state monitoring database;
An equipment chart management database that organizes and manages these three databases by equipment,
Using the equipment nonconformity management database that manages equipment failures,
The plant reliability-oriented maintenance operation support system according to any one of claims 1 to 7, further comprising a function of evaluating maintenance effectiveness of equipment. The plant reliability according to claim 8, further comprising a function of calculating and evaluating the maintenance effectiveness of the system related to the device and the maintenance effectiveness of the plant from the result of the maintenance effectiveness of the device. Safety-oriented maintenance operation support system. When each of the maintenance effectiveness of the equipment, the maintenance effectiveness of the system, and the maintenance effectiveness of the plant deviates from a preset management target value, an alarm is presented and the equipment to be re-evaluated is the equipment. 10. The plant reliability-oriented maintenance operation support system according to claim 8 or 9, further comprising a function of extracting a function failure database and presenting a correction. In a plant reliability-oriented maintenance operation support method that supports the creation of plant maintenance programs based on reliability-oriented maintenance,
A plant system development database that classifies and manages systems that guarantee the safety functions of the plant,
A system function development database for classifying and managing functions secured by individual systems managed in this plant system development database;
A component device database for classifying and managing devices related to functions registered in this system function development database;
A function related to each device registered in the component device database, a function failure mode thereof, and a device function failure database for managing information related to each function failure mode;
From the information managed in this equipment functional failure database, the maintenance importance of equipment is classified and determined, and based on this determination result, the equipment maintenance system is extracted using the database that manages the equipment maintenance system, A plant reliability-oriented maintenance operation support method characterized by managing this extraction result as a maintenance program in an equipment maintenance program database.

Images