JP2023133814A - Risk assessment apparatus and risk assessment method - Google Patents

Abstract

[Problem] To enable risk evaluation including the upper structure to which equipment and equipment belong.
[Solution] A risk assessment device 100 calculates a failure risk evaluation score of the equipment based on failure risk evaluation points set for each attribute of the equipment, and also evaluates the equipment based on the calculated evaluation score. an evaluation unit 112 that calculates a failure risk evaluation score of a higher-level configuration that is included as a component, and calculates a recommended maintenance level for the equipment based on the equipment evaluation score; It includes a display control unit 113 that outputs a screen including at least one of the maintenance levels and the higher-level configuration of the equipment to a display device. The configuration is, for example, a configuration related to manufacturing, and includes at least one of a process and a line as a higher-level configuration of the equipment.
[Selection diagram] Figure 1

Description

The present invention relates to a risk assessment device and a risk assessment method for evaluating the risk of failure of equipment or equipment.

In order to minimize losses due to failures of equipment and equipment, maintenance is performed to eliminate failures and keep equipment and equipment in normal condition. Maintenance can be broadly divided into corrective maintenance and preventive maintenance depending on the timing of maintenance. Corrective maintenance involves repairing equipment only after it breaks down. Preventive maintenance that performs maintenance before failure is classified into time-based maintenance, which is time-based, and condition-based maintenance, which is condition-based. In time-based maintenance, maintenance is performed periodically. In condition-based maintenance, the condition of equipment is monitored and maintenance is performed according to the state of deterioration.

In the past, maintenance consisted of corrective maintenance after equipment (equipment) broke down, but in recent years preventive maintenance has become mainstream. Although preventive maintenance can reduce the risk of failure, there are also disadvantages. Time-based maintenance performs maintenance at fixed intervals, but has disadvantages such as replacing available parts. With condition-based maintenance, parts costs and replacement costs can be optimized because parts are replaced at appropriate times, but monitoring the condition requires capital investment and other expenses. Therefore, it is necessary to evaluate the risk of equipment and perform maintenance based on the level of risk.

The equipment diagnosis system described in Patent Document 1 includes an equipment database in which information indicating the deterioration state of each equipment belonging to a plant to be monitored is collected and stored, and the deterioration state of each equipment stored in this equipment database is shown. A risk information calculation unit that calculates risk information including the risk of failure of each of the above equipment based on the information, and a risk information display unit that displays on a screen the risk information calculated by the risk information calculation unit for each equipment belonging to the plant. Equipped with.

Japanese Patent Application Publication No. 2020-173575

According to the equipment diagnosis system described in Patent Document 1, it is possible to grasp the failure risk based on the deterioration state of each equipment. However, the criteria for evaluating risk must consider not only the state of deterioration but also various factors such as the impact of equipment stoppage and repair costs. In addition, it is necessary to evaluate not only the risks of individual equipment, but also the risks of the manufacturing processes and lines that the equipment is comprised of and that would be affected in the event of a failure.
The present invention has been made in view of such a background, and an object of the present invention is to provide a risk assessment device and a risk assessment method that enable risk assessment including the upper structure to which equipment and equipment belong.

In order to solve the above problems, the risk assessment device according to the present invention calculates the failure risk evaluation score of the equipment based on the failure risk evaluation score set for each attribute of the equipment, and the calculated evaluation an evaluation unit that calculates a failure risk evaluation score of a higher-level configuration including the equipment as a component based on the points, and calculates a recommended maintenance level of the equipment based on the evaluation score of the equipment; and a display control unit that outputs a screen including at least one of the failure risk evaluation score and the recommended maintenance level, and a higher-level configuration of the equipment to a display device.

According to the present invention, it is possible to provide a risk assessment device and a risk assessment method that enable risk assessment including the higher-level configuration to which equipment and equipment belong. Problems, configurations, and effects other than those described above will be made clear by the following description of the embodiments.

It is a functional block diagram of a risk assessment device concerning this embodiment. FIG. 2 is a data configuration diagram of an equipment database according to the present embodiment. FIG. 2 is a data configuration diagram of an evaluation point setting database according to the present embodiment. FIG. 2 is a data configuration diagram of a tier setting database according to the present embodiment. FIG. 2 is a data configuration diagram of a maintenance level setting database according to the present embodiment. FIG. 2 is a data configuration diagram of an evaluation result database according to the present embodiment. It is a flow chart of risk evaluation processing concerning this embodiment. FIG. 3 is a screen configuration diagram of an equipment detailed information display screen according to the present embodiment. FIG. 3 is a screen configuration diagram of an equipment detailed information display screen according to the present embodiment. FIG. 3 is a screen configuration diagram of an equipment detailed information display screen according to the present embodiment. It is a screen configuration diagram of an equipment search screen according to the present embodiment. It is a screen configuration diagram of an equipment search screen according to the present embodiment. FIG. 3 is a screen configuration diagram of an equipment list screen according to the present embodiment.

≪Overview of risk assessment device≫
A risk assessment device and a risk assessment method in a mode (embodiment) for carrying out the present invention will be described below. The risk assessment device evaluates the risk of failure based on the failure attributes of equipment (equipment) and recommends maintenance methods according to the evaluation results (evaluation points). Examples of attributes related to failures include the materials handled, the number of failures in the past, and inspection costs. Maintenance methods include corrective maintenance, time-based maintenance, and condition-based maintenance.

The risk assessment device calculates evaluation points for the equipment itself, and also for the processes and lines that the equipment constitutes. That is, evaluation points are also calculated for higher-level configurations such as processes and lines that include the equipment as a component. By referring to the evaluation scores and recommended maintenance methods output by the risk assessment device, facility managers can formulate appropriate maintenance plans, improve the reliability of facilities and equipment, and optimize maintenance costs. You will be able to do this.

≪Configuration of risk assessment device≫
FIG. 1 is a functional block diagram of a risk assessment device 100 according to this embodiment. The risk assessment device 100 is a computer and includes a control section 110, a storage section 120, and an input/output section 180. User interface devices such as a display, keyboard, and mouse are connected to the input/output unit 180. The input/output unit 180 may include a communication device and be capable of transmitting and receiving data to and from other devices. Further, a media drive may be connected to the input/output unit 180, so that data can be exchanged using a recording medium.

≪Risk assessment device: storage section≫
The storage unit 120 includes storage devices such as ROM (Read Only Memory), RAM (Random Access Memory), and SSD (Solid State Drive). The storage unit 120 stores an equipment database 130, an evaluation point setting database 140, a tier setting database 150, a maintenance level setting database 160, an evaluation result database 170, and a program 128. The program 128 includes a description of the procedure of the risk evaluation process (see FIG. 7, which will be described later).

≪Risk assessment device: Storage section: Equipment database≫
FIG. 2 is a data configuration diagram of the equipment database 130 according to this embodiment. The equipment database 130 is tabular data. One row (record) of the equipment database 130 indicates one equipment or equipment, and includes columns (attributes) such as equipment number, equipment name, handling material, equipment scale, corrosion information, number of failures, inspection cost, repair cost, etc. include.

The equipment number is an identification number of the equipment. The equipment name is the name of the equipment. The handling substance is the nature of the substance handled (processed) by the equipment, and is one of ``no consideration required'', ``handle with care'', or ``dangerous substance''. The facility scale is the scale of the facility, and is one of "small scale," "medium scale," and "large scale." Corrosion information is the degree of influence of corrosion on equipment, and is one of "small influence," "medium influence," and "large influence."

The number of failures is the number of failures of equipment in the most recent year. The inspection cost is the cost required to inspect the equipment, and the unit is, for example, 1,000 yen. The repair cost is the cost for repairing equipment, and the unit is, for example, 1,000 yen.
The attributes of the equipment database 130 are not limited to the handling materials, equipment scale, etc. shown in FIG. 2, and may include other attributes or may be replaced with other attributes. Additionally, the equipment database 130 is updated as needed. For example, the equipment database 130 is updated regularly or every time inspection or repair is performed.

≪Risk assessment device: Storage section: Evaluation point setting database≫
FIG. 3 is a data configuration diagram of the evaluation point setting database 140 according to this embodiment. The evaluation point setting database 140 is data in a tabular format. One row (record) of the evaluation point setting database 140 indicates evaluation points for attributes (items) other than the equipment number and equipment name, which are included in the equipment database 130 (see FIG. 2). In other words, the sum of the evaluation points of the attributes related to the equipment becomes the evaluation score of the equipment. Records in the evaluation point setting database 140 include columns (attributes) of item names, patterns, and weights.

The item name is the name of an attribute (item) of the equipment database 130. The pattern is a pattern for calculating evaluation points, and is one of "setting by value", "setting by coefficient", and "setting by range".
The value-based setting is a pattern in which the evaluation score of an attribute is calculated based on the value of the attribute in the equipment database 130, and the evaluation score is determined according to the content of the weight. The coefficient setting is a pattern in which the evaluation score of the attribute is calculated by multiplying the numerical value of the attribute in the equipment database 130 by the numerical value of the weight. The range-specific setting is a pattern in which the evaluation score of an attribute is calculated based on a range of numerical values including the value of the attribute in the equipment database 130, and the evaluation score is determined according to the content of the weight. An example of evaluation score calculation is shown below.

The calculation pattern for evaluation points for "handled substances" is "set by value", with 1 point for "no consideration required", 2 points for "handle with care", and 3 points for "dangerous substance". The calculation pattern for the evaluation score for the "number of failures" is "coefficient setting", and the evaluation score is the value obtained by multiplying the number of failures of the equipment in the past year by 2. The evaluation score calculation pattern for "inspection cost" is "set by range", with 1 point for less than 1000, 2 points for 1000 or more and less than 5000, 3 points for 5000 or more and less than 10000, and 5 points for 10000 or more. The lower the evaluation score, the lower the risk and is preferable.

Regarding the evaluation points of the equipment with equipment number "A001" and equipment name "Equipment A" in the first line shown in Figure 2, "Handling substances" is "Handle with care" and 2 points, and "Equipment scale" is "Large". 5 points for "corrosion information", 1 point for "small impact", 4 points for "number of failures" of 2, 1 point for "inspection cost" of 120, 1 point for "repair cost" of 500, A total of 14 points will be evaluated.

≪Risk assessment device: Storage section: Tier setting database≫
FIG. 4 is a data configuration diagram of the tier setting database 150 according to this embodiment. The tier setting database 150 is data in a tabular format. One row (record) of the hierarchy setting database 150 indicates a hierarchical relationship between equipment, processes, lines, etc., and the equipment and processes in the lower columns (attributes) are subordinate to the processes and lines in the upper columns. Show that. For example, "equipment AAA" and "equipment AAB" constitute (are constituent elements of) "process AA" and indicate that they are subordinate. In other words, "process AA" is a higher-level configuration including "equipment AAA" and "equipment AAB", and "equipment AAA" and "equipment AAB" are lower-level configurations of "process AA".

The hierarchy setting database 150 shown in FIG. 4 includes a hierarchical relationship of three levels: equipment, process, and line, but may also include other hierarchies (superior relationships). In this embodiment, in addition to the vertical relationship of equipment, process, and line, the vertical relationship of power system such as equipment, switchboard, and power system, and the vertical relationship of building (equipment, floor, and building) are included. It is the upper level of equipment, and processes, lines, switchboards, power systems, floors, buildings, etc. that include equipment as components are also referred to as higher-level configuration. Furthermore, lines, power systems, and buildings are higher-level structures than processes, switchboards, and floors, respectively.

As explained above, the configuration related to the risk assessment device 100 includes a configuration related to manufacturing, and includes at least one of a process and a line as a higher-level configuration of equipment. Further, the configuration related to the risk assessment device 100 includes a configuration related to a power source, and includes at least one of a switchboard and an electric power system as a higher-level configuration of the equipment. Other configurations related to the risk assessment device 100 include configurations related to position, and include at least one of a floor and a building as a higher-level configuration of the equipment.

≪Risk assessment device: Storage section: Maintenance level setting database≫
FIG. 5 is a data configuration diagram of the maintenance level setting database 160 according to this embodiment. The maintenance level setting database 160 is data in a tabular format, and shows the relationship between equipment evaluation points and recommended maintenance levels. Specifically, if the evaluation score of the equipment is less than 10 points, the recommended maintenance level for the equipment is "corrective maintenance," if it is 10 points or more and less than 20 points, it is "time-based maintenance," and if it is 20 points or more, it is "condition-based maintenance." ”. In other words, "corrective maintenance" recommends that equipment be maintained after a problem occurs, "time-based maintenance" recommends that equipment be maintained periodically, and "condition-based maintenance" recommends that equipment be maintained periodically. The idea is to maintain equipment while monitoring its condition.

≪Risk assessment device: Storage section: Evaluation results database≫
FIG. 6 is a data configuration diagram of the evaluation result database 170 according to this embodiment. The evaluation result database 170 is data in a tabular format, and shows evaluation points for equipment, processes, lines, power systems, and the like.

≪Risk assessment device: control section≫
Returning to FIG. 1, the description of the control unit 110 will be continued. The control unit 110 includes a CPU (Central Processing Unit), and includes an equipment information acquisition unit 111, an evaluation unit 112, and a display control unit 113.

The equipment information acquisition unit 111 acquires information related to equipment and stores it in the equipment database 130 and the tier setting database 150. For example, the equipment information acquisition unit 111 stores the name of the equipment and the materials handled that are input by the equipment manager in the attributes of the equipment name and the materials handled in the equipment database 130. Additionally, the equipment information acquisition unit 111 stores the hierarchical relationships among equipment, processes, lines, power systems, buildings, etc. input by the equipment manager in the hierarchy setting database 150. In addition, the equipment information acquisition unit 111 acquires settings related to evaluation points and recommended maintenance levels, and stores them in the evaluation point setting database 140 and the maintenance level setting database 160. The equipment information acquisition unit 111 may acquire information not only from the administrator's input but also from other devices and store it in the database. For example, the equipment information acquisition unit 111 may update the equipment database 130 by acquiring information related to the occurrence of equipment failures and repair costs from a device that manages the maintenance status of equipment.

The evaluation unit 112 calculates an evaluation score of the failure risk of the equipment based on the equipment database 130 and stores it in the evaluation result database 170. The method of calculating the evaluation score of the equipment is as explained in FIG. 3. The evaluation unit 112 also refers to the maintenance level setting database 160 based on the evaluation score of the equipment and determines the recommended maintenance level of the equipment.

Furthermore, the evaluation unit 112 calculates the evaluation score of a higher-level configuration such as a process or line based on the evaluation score of the equipment belonging to the higher-level configuration, and stores it in the evaluation result database 170. For example, the evaluation unit 112 calculates the total value, average value, or maximum value of the evaluation scores of the equipment belonging to the higher-level configuration as the evaluation of the higher-level configuration.

As explained above, the risk assessment device 100 calculates the failure risk evaluation points of the equipment based on the failure risk evaluation points set for each attribute of the equipment, and also calculates the failure risk evaluation points of the equipment based on the failure risk evaluation points set for each attribute of the equipment. The evaluation unit 112 calculates a failure risk evaluation score of a higher-level configuration including the equipment as a component, and calculates a recommended maintenance level of the equipment based on the evaluation score of the equipment.

The display control unit 113 connects the input/output unit 180 to a screen (see FIGS. 8 to 13 described later) that includes the attributes and evaluation points of the equipment, the upper structure to which the equipment belongs, etc. in the equipment database 130 and the evaluation result database 170. displayed on the displayed screen.
As described above, the risk assessment device 100 includes a display control unit 113 that outputs a screen including at least one of the equipment failure risk evaluation score and the recommended maintenance level, and the upper configuration of the equipment to the display device. Equipped with.

≪Risk assessment processing≫
FIG. 7 is a flowchart of the risk evaluation process according to this embodiment. The risk evaluation process includes evaluation point calculation processing in steps S11 to S13 and display processing in steps S14 to S17. In FIG. 7, the evaluation score calculation process and the display process are executed consecutively, but they may be executed independently. The evaluation point calculation process may be executed at a predetermined timing, for example, periodically or when the equipment database 130 is updated.

In step S11, the evaluation unit 112 refers to the tier setting database 150 to identify the tier. Specifically, the evaluation unit 112 identifies the tree structure of equipment, processes, lines, switchboards, power systems, floors, buildings, etc. from the hierarchical relationships in the hierarchy setting database 150.
In step S12, the evaluation unit 112 calculates evaluation points from the evaluation target, which is a lower node in the tree structure identified in step S11. Targets of evaluation include equipment, processes, lines, switchboards, power systems, floors, buildings, etc.

In step S13, the evaluation unit 112 calculates the evaluation score of the evaluation target and stores it in the evaluation result database 170. The evaluation point calculation method when the evaluation target is the equipment at the lowest level of the tree structure is as described in conjunction with the evaluation point setting database 140 (see FIG. 3). The evaluation score of an evaluation object (upper configuration) other than equipment is the total value, average value, or maximum value of the evaluation points of the evaluation objects immediately below the evaluation object. For example, if the six hierarchical relationships shown in Figure 4 are all superior relationships, the evaluation score for "Process AA" is the sum, average value, or average of the evaluation scores for "Equipment AAA" and "Equipment AAB" This is the maximum value. Moreover, the evaluation score of "line A" is the total value, average value, or maximum value of the evaluation scores of "process AA" and "process AB".

In step S14, the display control unit 113 displays an equipment detailed information display screen 610 (see FIG. 8, which will be described later).
In step S15, the display control unit 113 obtains an operation on a screen including the equipment detailed information display screen 610 (see FIGS. 8 to 13, which will be described later).
In step S16, the display control unit 113 finishes the risk evaluation process if the operation acquired in step S15 is an operation that instructs to end the display (step S16 → YES), and if the operation acquired in step S15 is not an operation that instructs to end the display (step S16 → NO) Proceed to step S17.
In step S17, the display control unit 113 displays a screen (see FIGS. 8 to 13 to be described later) according to the operation obtained in step S15 (transitions to the screen). The screens, operations, and screen transitions depending on the operations will be explained below.

≪Risk assessment device: Equipment detailed information display screen≫
FIG. 8 is a screen configuration diagram of the equipment detailed information display screen 610 according to this embodiment. An area 611 on the left side of the equipment detailed information display screen 610 includes tabs for "detailed information", "search", and "equipment list". On the equipment detailed information display screen 610, the "detailed information" tab is selected, and in the area 611, a navigation window including a tree structure (vertical relationship) of equipment and higher-level configuration is displayed. “Line” is selected in the pull-down list 613, and a tree structure with the line at the top is displayed in the area 611.

In an area 612 on the right side of the equipment detailed information display screen 610, detailed information of the equipment specified in the navigation window is displayed. In FIG. 8, "equipment AAB" which is subordinate to "process AA" which is subordinate to "line A" is selected, and detailed information of "equipment AAB" is displayed in area 612.

Detailed information includes the equipment number, equipment name, equipment information (see the "■Equipment information" column), evaluation points for each item (see the "■Evaluation points for each item" column), and evaluation ("■Evaluation"). ) is displayed. As the equipment information, attributes of equipment in the equipment database 130 are displayed. The evaluation points for each item (by equipment attribute) are displayed as the evaluation points for each item. The evaluation points for each item are calculated with reference to the evaluation point setting database 140 (see FIG. 3).

As an evaluation, the evaluation points (total evaluation points) of the equipment, the recommended maintenance level, the line, power system, and building to which the equipment belongs (which are above the equipment), and their respective evaluation points are displayed. The evaluation score is obtained from the evaluation result database 170 (see FIG. 6). The recommended maintenance level is calculated based on the evaluation score with reference to the maintenance level setting database 160 (see FIG. 5). The line, power system, and building to which the equipment belongs are identified by referring to the hierarchy setting database 150 (see FIG. 4) and tracing the upper level of the equipment.

As described above, the equipment detailed information display screen 610 includes the evaluation score of the equipment as well as the evaluation score of the higher-level configuration to which the equipment belongs.

When "power system" is selected in the pull-down list 613, the equipment detailed information display screen 610A (see FIG. 9, described later) is displayed, and when "building" is selected, the equipment detailed information display screen 610B (see FIG. 10, described later) is displayed. Transition. Furthermore, when the "Search" tab at the top of the area 611 is selected, the screen transitions to an equipment search screen 620 (see FIG. 11), and when the "equipment list" tab is selected, the screen transitions to an equipment list screen 630 (see FIG. 13).

FIG. 9 is a screen configuration diagram of the equipment detailed information display screen 610A according to the present embodiment. "Power system" is selected in the pull-down list 613 of the equipment detailed information display screen 610A, and a tree structure with the power system at the top is displayed in the area 611A.
FIG. 10 is a screen configuration diagram of the equipment detailed information display screen 610B according to this embodiment. "Building" is selected in the pull-down list 613 of the equipment detailed information display screen 610B, and a tree structure with the building at the top is displayed in the area 611B.

≪Risk assessment device: equipment search screen≫
FIG. 11 is a screen configuration diagram of the equipment search screen 620 according to this embodiment. An area 621 on the left side of the equipment search screen 620 includes tabs for "detailed information", "search", and "equipment list". “Search” is selected on the equipment search screen 620, and a navigation window for specifying search conditions is displayed in the area 621.
"Equipment" is selected in the pull-down list 623, and in the area 622 on the right side of the equipment search screen 620, a list of equipment that is the search result of the search condition specified in the navigation window is displayed. In FIG. 11, no search conditions are specified, and the search results display the equipment number, equipment name, evaluation score, and recommended maintenance level for all equipment.

In the equipment search screen 620 shown in FIG. 11, it is possible to search using attributes of equipment in the equipment database 130, such as equipment number and materials handled, as search conditions, but it is also possible to search using other attributes. FIG. 12 is a screen configuration diagram of the equipment search screen 620A according to this embodiment. The search conditions in the area 621A on the left side of the equipment search screen 620A are evaluation points and recommended maintenance levels, and equipment can be searched using these conditions.

"Building" is selected in the pull-down list 623 of the equipment search screen 620A, and the area 622 on the right side of the equipment search screen 620A displays a list of buildings containing equipment that is the search result of the search conditions specified in the navigation window. Displayed in tree structure format. Equipment whose recommended maintenance level is "condition standard" are "equipment AAB" and "equipment BBB", and a tree structure with the building containing "equipment AAB" or "equipment BBB" at the top is displayed.
When the "detailed information" tab at the top of the areas 621 and 621A is selected, the screen transitions to an equipment detailed information display screen 610 (see FIG. 8), and when the "equipment list" tab is selected, the screen transitions to an equipment list screen 630.

≪Risk assessment device: equipment list screen≫
FIG. 13 is a screen configuration diagram of the equipment list screen 630 according to this embodiment. An area 631 on the left side of the equipment list screen 630 includes tabs for "detailed information", "search", and "equipment list". On the equipment list screen 630, “equipment list” is selected. In the area 632 on the right side of the equipment list screen 630, all equipment and higher-level configurations (processes, lines, etc.) are displayed in a tree structure format.

≪Features of risk assessment device≫
The risk assessment device evaluates the risk of failure based on the attributes related to equipment failure, calculates an evaluation score, and recommends a maintenance level according to the evaluation score. The risk assessment device 100 calculates evaluation points for the equipment itself, and also calculates evaluation points for higher-level configurations such as processes and lines that the equipment constitutes.

By using the risk assessment device 100, the facility manager can grasp the risk of failure of the facility and use it as a reference for determining the maintenance level. In addition, administrators can search for equipment using calculated evaluation points and recommended maintenance levels as search conditions, and can understand the processes and lines that constitute the top components of the equipment in the search results, while also taking into account the importance of the processes and lines. The level of maintenance of equipment can be determined. In turn, managers can formulate appropriate maintenance plans, improve the reliability of equipment and equipment, and optimize maintenance costs.

≪Modified example: Equipment search screen≫
In the equipment search screen 620A (see FIG. 12) in the embodiment described above, equipment is inspected using evaluation points and recommended maintenance levels as search conditions, but higher-level configurations such as processes, lines, and power systems can also be searched. good. For example, the risk assessment device 100 may be able to search for higher-level configurations based on evaluation points.

≪Modified example: Attributes of equipment≫
Attributes related to the risk of equipment failure in the embodiments described above include the materials handled, equipment scale, and the number of failures. Other attributes include operating temperature, inspection status during operation, inspection status during use, annual corrosion rate, usage environment and material relationship, metal fatigue occurrence status, production reduction and capacity reduction, external skin temperature, and installation location humidity status. , properties of insulation materials, appearance of exterior panels, material properties, pressure, production reduction and functional decline, plant location and role, impact on production, parts procurement time, degree of impact on products, failure frequency, importance of front and rear equipment degree, pollution or disaster risk.

≪Other variations≫
Although several embodiments of the present invention have been described above, these embodiments are merely illustrative and do not limit the technical scope of the present invention. The present invention can take various other embodiments, and various changes such as omissions and substitutions can be made without departing from the gist of the present invention. These embodiments and their modifications are included within the scope and gist of the invention described in this specification and the like, as well as within the scope of the invention described in the claims and its equivalents.

100 Risk assessment device 111 Equipment information acquisition section 112 Evaluation section 113 Display control section 130 Equipment database 140 Evaluation point setting database 150 Tier setting database 160 Maintenance level setting database 170 Evaluation result database 610, 610A, 610B Equipment detailed information display screen 620, 620A Equipment search screen 630 Equipment list screen

In order to solve the above problems, the risk assessment device according to the present invention includes a hierarchical setting database that shows the hierarchical relationship of the configuration with equipment as the lowest component, and evaluation points of the failure risk of the equipment and recommendations for the equipment. A storage unit that stores a maintenance level setting database indicating the relationship with the maintenance level, and a failure risk evaluation score of the equipment based on the failure risk evaluation score set for each attribute of the equipment , and the hierarchy setting is performed. Referring to the database, based on the calculated evaluation score of the equipment, calculate the failure risk evaluation score of a higher-level configuration including the equipment as a component, and referring to the maintenance level setting database, an evaluation unit that calculates a recommended maintenance level of the equipment based on the calculated evaluation score of the equipment, at least one of the failure risk evaluation score of the equipment and the recommended maintenance level, and a hierarchical relationship between the plurality of configurations. and a display control unit that outputs a screen including a failure risk evaluation score of a higher-level configuration of the equipment to a display device.

In order to solve the above problems, the risk assessment device according to the present invention includes a hierarchical setting database that shows the hierarchical relationship of the configuration with equipment as the lowest component, and evaluation points of the failure risk of the equipment and recommendations for the equipment. A storage unit that stores a maintenance level setting database indicating the relationship with the maintenance level, and a failure risk evaluation score of the equipment based on the failure risk evaluation score set for each attribute of the equipment, and the hierarchy setting is performed. Referring to the database, based on the calculated evaluation score of the equipment, calculate the failure risk evaluation score of a higher-level configuration including the equipment as a component, and referring to the maintenance level setting database, an evaluation unit that calculates a recommended maintenance level of the equipment based on the calculated evaluation score of the equipment; at least one of the failure risk evaluation score of the equipment and the recommended maintenance level; The apparatus includes a display control unit that outputs a screen including failure risk evaluation points of a plurality of higher-level configurations to which the equipment belongs to a display device.

Claims (7)

A higher-level configuration that calculates the failure risk evaluation score of the equipment based on the failure risk evaluation points set for each attribute of the equipment, and includes the equipment as a component based on the calculated evaluation points. an evaluation unit that calculates a failure risk evaluation score for the equipment and calculates a recommended maintenance level for the equipment based on the equipment evaluation score;
A risk assessment device comprising: a display control unit that outputs a screen including at least one of the failure risk evaluation score of the equipment and the recommended maintenance level and a higher-level configuration of the equipment to a display device. The configuration is a configuration related to manufacturing,
The risk assessment device according to claim 1, wherein the higher-level configuration of the equipment includes at least one of a process and a line. The configuration is a configuration related to a power source,
The risk assessment device according to claim 1, wherein the upper configuration of the equipment includes at least one of a switchboard and an electric power system. The configuration is a configuration related to position,
The risk assessment device according to claim 1, wherein the upper structure of the equipment includes at least one of a floor and a building. The risk assessment device according to claim 1, wherein the screen includes an evaluation score of the equipment as well as an evaluation score of a higher-level configuration to which the equipment belongs. The attributes of the equipment are:
Substances handled, equipment scale, corrosion information, number of failures, inspection costs, repair costs, operating temperature, inspection status during operation, inspection status during use, annual corrosion rate, usage environment and material relationship, occurrence status of metal fatigue, production reduction and capacity reduction, external skin temperature, humidity conditions at the installation site, properties of insulation material, appearance of exterior panels, material properties, pressure, production reduction and reduction in function, location and role of the plant, impact on production, parts procurement time, The risk assessment device according to claim 1, comprising at least one of the following: influence on a product, failure frequency, importance of front and rear equipment, pollution, or disaster risk. The risk assessment device
A higher-level configuration that calculates the failure risk evaluation score of the equipment based on the failure risk evaluation points set for each attribute of the equipment, and includes the equipment as a component based on the calculated evaluation points. calculating a failure risk evaluation score for the equipment, and calculating a recommended maintenance level for the equipment based on the equipment evaluation score;
A risk assessment method, comprising: outputting a screen including at least one of the failure risk evaluation score of the equipment and the recommended maintenance level, and a higher-level configuration of the equipment to a display device.

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