JP7245940B1 - Risk assessment device and risk assessment method - Google Patents

Abstract

Kind Code: A1 A risk evaluation including a high-level configuration to which facilities and devices belong is enabled.
A risk assessment device (100) calculates a failure risk evaluation point of the facility based on the failure risk evaluation point set for each attribute of the facility, and determines the facility based on the calculated evaluation point. An evaluation unit 112 that calculates the failure risk evaluation score of a higher-level configuration that is included as a component and calculates the recommended maintenance level of the equipment based on the equipment evaluation score, and the equipment failure risk evaluation score and recommendation A display control unit 113 is provided for outputting a screen including at least one of the maintenance levels and the high-level configuration of the facility to a display device. A configuration is, for example, a configuration related to manufacturing, and includes at least one of a process and a line as a high-level configuration of equipment.
[Selection drawing] Fig. 1

Description

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

In order to minimize the loss due to failure of facilities and equipment, maintenance is performed to eliminate failures and keep facilities and equipment in normal condition. Maintenance can be broadly divided into corrective maintenance and preventive maintenance depending on the timing of maintenance. In post-maintenance, the equipment is repaired only after it breaks down. Preventive maintenance that performs maintenance before failure is classified into time-based maintenance based on time and condition-based maintenance based on condition. 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 was performed after failure of equipment (equipment), but in recent years, preventive maintenance has become mainstream. Although preventive maintenance can reduce the risk of failures, it also has disadvantages. Time-based maintenance performs maintenance at fixed intervals, but has disadvantages such as replacing available parts. With condition-based maintenance, parts and replacement costs can be optimized by replacing parts at the appropriate timing, but monitoring the condition requires capital investment and other expenses. For this reason, it is required to evaluate the risk of equipment and perform maintenance based on the level of risk.

The facility diagnosis system described in Patent Document 1 collects and stores information indicating the deterioration state of each facility belonging to a plant to be monitored, and indicates the deterioration state of each facility stored in the facility database. Based on the information, a risk information calculation unit that calculates risk information including the failure risk of each of the equipment, 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. Prepare.

JP 2020-173575 A

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 piece of equipment. However, the criteria for assessing risk are not limited to the deterioration state, and it is necessary to consider 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 facilities, but also the risks of the manufacturing processes and lines that are configured by the facilities and affected in the event of a failure.
The present invention has been made in view of such a background, and an object thereof is to provide a risk assessment device and a risk assessment method that enable risk assessment including higher-level configurations to which facilities and equipment belong.

In order to solve the above-described problems, the risk assessment device according to the present invention includes a hierarchy setting database indicating the hierarchical relationship of the configuration with equipment as the lowest component, and an evaluation score of the failure risk of the equipment and a recommendation of the equipment. A storage unit for storing a maintenance level setting database indicating a relationship with a maintenance level, and a failure risk evaluation point for the equipment is calculated based on the failure risk evaluation points set for each attribute of the equipment, and the hierarchy setting is performed. With reference to the database, based on the calculated evaluation point of the equipment, calculate the evaluation score of the failure risk of the upper configuration that includes the equipment as a component, and refer to the maintenance level setting database, An evaluation unit that calculates the recommended maintenance level of the equipment based on the calculated evaluation score of the equipment, at least one of the equipment failure risk evaluation score and the recommended maintenance level , and the hierarchical relationship of the configuration a display control unit for outputting to a display device a screen including failure risk evaluation points of a plurality of higher-level configurations to which the equipment belongs .

ADVANTAGE OF THE INVENTION According to this invention, the risk-assessment apparatus and risk-assessment method which enable risk assessment including the high-order structure to which an installation and an apparatus belong can be provided. Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is a functional block diagram of a risk assessment device concerning this embodiment. 4 is a data configuration diagram of an equipment database according to the embodiment; FIG. 4 is a data configuration diagram of an evaluation score setting database according to the embodiment; FIG. 4 is a data configuration diagram of a hierarchy setting database according to the embodiment; FIG. 4 is a data configuration diagram of a security level setting database according to the embodiment; FIG. 4 is a data configuration diagram of an evaluation result database according to the embodiment; FIG. It is a flow chart of risk evaluation processing concerning this embodiment. It is a screen block diagram of the equipment detailed information display screen which concerns on this embodiment. It is a screen block diagram of the equipment detailed information display screen which concerns on this embodiment. It is a screen block diagram of the equipment detailed information display screen which concerns on this embodiment. It is a screen configuration diagram of a facility search screen according to the present embodiment. It is a screen configuration diagram of a facility search screen according to the present embodiment. It is a screen block diagram of the equipment list screen which concerns on this embodiment.

<<Overview of risk assessment equipment>>
A risk assessment device and a risk assessment method in the form (embodiment) for carrying out the present invention will be described below. The risk assessment device evaluates the failure risk based on the failure attributes of equipment (equipment) and recommends a maintenance method according to the evaluation results (evaluation points). Examples of failure-related attributes include substances 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 an evaluation score for the equipment itself, and also calculates an evaluation score for the processes and lines configured by the equipment. In other words, the evaluation points are calculated for higher-level configurations such as processes and lines that include the facility as a component. By referring to the evaluation points 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. be able to

<<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, a keyboard, and a mouse are connected to the input/output unit 180 . The input/output unit 180 may include a communication device and be capable of transmitting/receiving data to/from another device. Also, 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 unit>>
The storage unit 120 includes a storage device such as a ROM (Read Only Memory), a RAM (Random Access Memory), and an SSD (Solid State Drive). Storage unit 120 stores facility database 130 , evaluation point setting database 140 , hierarchy setting database 150 , maintenance level setting database 160 , evaluation result database 170 , and program 128 . The program 128 includes a description of the procedure of risk evaluation processing (see FIG. 7 described later).

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

The facility number is the identification number of the facility. The facility name is the name of the facility. The handling substance is the nature of the substance handled (processed) by the facility, and is one of "no consideration", "careful handling", and "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 for the inspection of the equipment, and the unit is, for example, 1,000 yen. The repair cost is the cost required for repairing the equipment, and the unit is, for example, 1,000 yen.
The attributes of the facility database 130 are not limited to the materials to be handled and the facility scale shown in FIG. 2, and may include other attributes or may be replaced with other attributes. Also, the facility database 130 is updated as needed. For example, the equipment database 130 is updated periodically or updated each time an inspection or repair is performed.

<<Risk assessment device: Storage unit: Evaluation score setting database>>
FIG. 3 is a data configuration diagram of the evaluation point setting database 140 according to this embodiment. The rating point setting database 140 is tabular data. One row (record) in the score setting database 140 indicates the score 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 facility is the evaluation point of the facility. A record of the rating point setting database 140 includes columns (attributes) of item names, patterns, and weights.

The item name is the name of the attribute (item) of the equipment database 130 . The pattern is a pattern of evaluation point calculation, and is one of "setting by value", "setting by coefficient", and "setting by range".
The setting by value is a pattern in which the evaluation score of the attribute is calculated according to 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 an attribute evaluation score is calculated by multiplying the attribute numerical value of the equipment database 130 by the weight numerical value. The setting by range is a pattern in which the evaluation score of the attribute is calculated according to the numerical range 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 evaluation point calculation pattern for "substance handled" is "set by value", with 1 point for "unnecessary consideration", 2 points for "careful handling", and 3 points for "dangerous substance". The evaluation point calculation pattern for the "number of failures" is "coefficient setting", and the value obtained by multiplying the number of failures of the facility in the most recent year by 2 is the evaluation point. The evaluation point calculation pattern for "inspection cost" is "setting 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. A lower score is preferable because the risk is lower.

Regarding the evaluation points of the facility with the facility number "A001" on the first line in FIG. 5 points for "corrosion information" is 1 point for "small impact", 4 points for "number of failures" is 2, 1 point for "inspection cost" is 120, and 1 point is for "repair cost" is 500. A total of 14 points will be the evaluation points.

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

The hierarchy setting database 150 shown in FIG. 4 includes a three-tier hierarchy of equipment, process, and line, but may include other hierarchies (hierarchical relationships). In this embodiment, in addition to the vertical relationship of the lines such as equipment, process and line, the vertical relationship of the power system such as equipment, switchboard and power system, and the vertical relationship of the building such as equipment, floor and building are included. A process, a line, a switchboard, a power system, a floor, a building, and the like, which are higher than the facility and include the facility as a component, are also referred to as a higher-level configuration. Lines, power systems, and buildings are higher-level configurations of processes, switchboards, and floors, respectively.

As described above, the configuration related to the risk assessment device 100 includes the configuration related to manufacturing, and includes at least one of the processes and lines as the high-level configuration of the facility. Further, the configuration related to the risk assessment device 100 includes a configuration related to a power supply, and includes at least one of a switchboard and a power system as a high-level configuration of the facility. Another configuration related to the risk assessment apparatus 100 includes a configuration related to a position, and includes at least one of a floor and a building as a high-level configuration of equipment.

≪Risk assessment device: storage unit: 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 tabular form, and indicates the relationship between facility evaluation points and recommended maintenance levels. Specifically, if the evaluation score of equipment is less than 10 points, the recommended maintenance level of the equipment is "breakdown 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 maintenance of equipment after a problem occurs, "time-based maintenance" recommends periodic maintenance of equipment, and "condition-based maintenance" recommends maintenance of equipment. The point is that it is recommended to maintain equipment while monitoring its condition.

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

<<Risk assessment device: Control unit>>
Returning to FIG. 1, the description of the control unit 110 is 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 about equipment and stores it in the equipment database 130 and the hierarchy setting database 150 . For example, the facility information acquisition unit 111 stores the facility name and the handling substance input by the facility manager in the attributes of the facility name and handling substance of the facility database 130 . In addition, the facility information acquisition unit 111 stores in the hierarchy setting database 150 the hierarchical relationship of facilities, processes, lines, power systems, buildings, etc., input by the administrator of the facilities. In addition, the facility 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 from other devices and store the information in the database, not limited to the input by the administrator. For example, the equipment information acquisition unit 111 may acquire information about the occurrence of equipment failures and repair costs from a device that manages the maintenance status of equipment, and update the equipment database 130 .

The evaluation unit 112 calculates an evaluation score of equipment failure risk based on the equipment database 130 and stores the evaluation score in the evaluation result database 170 . The method of calculating the facility evaluation points is as described with reference to FIG. The evaluation unit 112 also refers to the maintenance level setting database 160 based on the equipment evaluation points to determine the recommended maintenance level of the equipment.

Also, the evaluation unit 112 calculates the evaluation points of the high-level configuration such as processes and lines based on the evaluation points of the equipment belonging to the high-level configuration, and stores them in the evaluation result database 170 . For example, the evaluation unit 112 calculates the total value, the average value, or the maximum value of the evaluation points of the facilities belonging to the higher-level configuration as the evaluation of the higher-level configuration.

As described above, the risk assessment device 100 calculates the failure risk evaluation point of the facility based on the failure risk evaluation point set for each attribute of the facility, and based on the calculated evaluation point An evaluation unit 112 is provided for calculating a failure risk evaluation score for a higher-level configuration including the equipment as a component, and calculating a recommended maintenance level for the equipment based on the evaluation score for the equipment.

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

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

In step S11, the evaluation unit 112 refers to the hierarchy setting database 150 to identify the hierarchy. Specifically, the evaluation unit 112 identifies tree structures such as facilities, processes, lines, switchboards, power systems, floors, and buildings from the hierarchical relationships in the hierarchy setting database 150 .
In step S12, the evaluation unit 112 calculates an evaluation score from the evaluation target, which is a lower node in the tree structure identified in step S11. Equipment, processes, lines, switchboards, power systems, floors, buildings, and the like are subject to evaluation.

In step S<b>13 , the evaluation unit 112 calculates the evaluation score of the evaluation object and stores it in the evaluation result database 170 . The evaluation point calculation method when the evaluation target is the equipment at the bottom of the tree structure is as described with the evaluation point setting database 140 (see FIG. 3). The evaluation point of an evaluation object (upper-level configuration) other than equipment is the total value, average value, or maximum value of the evaluation points of the evaluation objects immediately below the relevant evaluation object. For example, assuming that the six hierarchical relationships shown in FIG. Maximum value. Also, 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 the facility detailed information display screen 610 (see FIG. 8 described later).
In step S15, the display control unit 113 acquires an operation on screens including the facility detailed information display screen 610 (see FIGS. 8 to 13 described later).
In step S16, the display control unit 113 ends the risk evaluation process if the operation acquired in step S15 is an operation to instruct display termination (step S16→YES), and if it is not an operation to instruct display termination (step S16→ NO) Proceed to step S17.
In step S17, the display control unit 113 displays a screen (see FIGS. 8 to 13 described later) corresponding to the operation acquired in step S15 (transitions to the screen). Screen transitions according to screens, operations, and operations will be described below.

≪Risk assessment device: Equipment detailed information display screen≫
FIG. 8 is a screen configuration diagram of the facility detailed information display screen 610 according to this embodiment. An area 611 on the left side of the facility detailed information display screen 610 has tabs for "detailed information", "search", and "facility list". A "detailed information" tab is selected on the facility detailed information display screen 610, and a navigation window including a tree structure (hierarchical relationship) of the facility and the upper configuration is displayed in the area 611. FIG. "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. FIG.

An area 612 on the right side of the facility detailed information display screen 610 displays detailed information of the facility specified in the navigation window. In FIG. 8 , “equipment AAB” under “process AA” under “line A” is selected, and detailed information on “equipment AAB” is displayed in area 612 .

As detailed information, the equipment number, equipment name, equipment information (refer to the "■ equipment information" column), evaluation points by item (refer to the "■ evaluation points by item" column), and evaluation ("■ evaluation") column) is displayed. As facility information, attributes of facilities in the facility database 130 are displayed. Evaluation points for each item (equipment attribute) are displayed as 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 the evaluation, the facility evaluation point (total evaluation point), recommended maintenance level, line, power system, and building to which the facility belongs (which is higher than the facility), and their respective evaluation points are displayed. The evaluation points are acquired from the evaluation result database 170 (see FIG. 6). The recommended maintenance level is calculated based on the evaluation points with reference to the maintenance level setting database 160 (see FIG. 5). The line, power system, and building to which the facility belongs are specified by referring to the hierarchy setting database 150 (see FIG. 4) and tracing the upper level of the facility.

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

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

FIG. 9 is a screen configuration diagram of the facility detailed information display screen 610A according to this embodiment. "Power system" is selected in the pull-down list 613 of the facility 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 facility detailed information display screen 610B according to this embodiment. "Building" is selected in the pull-down list 613 of the facility detailed information display screen 610B, and a tree structure with the building as the highest level is displayed in the region 611B.

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

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

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

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

<<Characteristics of the risk assessment system>>
The risk assessment device evaluates the failure risk based on the attributes related to equipment failure, calculates evaluation points, and recommends a maintenance level according to the evaluation points. The risk assessment device 100 calculates an evaluation score for the equipment itself, and also calculates an evaluation score for higher-level configurations such as processes and lines that are configured by the equipment.

By using the risk assessment device 100, the facility manager can grasp the failure risk of the facility and can refer to the maintenance level for determination. In addition, the manager can search for equipment using the calculated evaluation score and recommended maintenance level as search conditions, and can grasp the processes and lines that are the upper components of the equipment in the search results. The maintenance level of equipment can be determined. As a result, the manager can formulate an appropriate maintenance plan, improve the reliability of facilities and equipment, and optimize maintenance costs.

≪Modification: Equipment search screen≫
In the facility search screen 620A (see FIG. 12) in the above-described embodiment, facilities are inspected using evaluation points and recommended maintenance levels as search conditions. good. For example, the risk assessment device 100 may search for higher-level configurations based on evaluation points.

≪Modified example: Attribute of facility≫
Attributes related to the failure risk of equipment in the above-described embodiment include handling substances, equipment scale, number of failures, and the like. Other attributes include operating temperature, inspection status during operation, inspection status during use, annual corrosion rate, usage environment and material relationship, occurrence of metal fatigue, production and capacity reduction, external skin temperature, installation site humidity , insulation properties, external 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 Modifications>>
Although several embodiments of the present invention have been described above, these embodiments are merely examples and do not limit the technical scope of the present invention. The present invention can take various other embodiments, and various modifications such as omissions and substitutions can be made without departing from the gist of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention described in this specification and the like, and are included in the scope of the invention described in the claims and equivalents thereof.

100 risk assessment device 111 equipment information acquisition unit 112 evaluation unit 113 display control unit 130 equipment database 140 evaluation point setting database 150 hierarchy setting database 160 maintenance level setting database 170 evaluation result database 610, 610A, 610B equipment detailed information display screens 620, 620A Equipment search screen 630 Equipment list screen

Claims (6)

a storage unit for storing a hierarchy setting database indicating the hierarchical relationship of the configuration with the equipment as the lowest component, and a maintenance level setting database indicating the relationship between the failure risk evaluation score of the equipment and the recommended maintenance level of the equipment; ,
Calculate the failure risk evaluation score of the equipment based on the failure risk evaluation score set for each attribute of the equipment,
referring to the hierarchy setting database, calculating a failure risk evaluation score of a higher-level configuration including the equipment as a component based on the calculated evaluation score of the equipment;
an evaluation unit that refers to the maintenance level setting database and calculates a recommended maintenance level of the equipment based on the calculated evaluation score of the equipment;
Outputting to a display device a screen containing at least one of the equipment failure risk evaluation score and the recommended maintenance level , and the failure risk evaluation scores of a plurality of higher-level configurations to which the equipment belongs in the hierarchy of the configuration. A risk assessment device, comprising: a display control unit for The configuration is a configuration related to manufacturing,
The risk assessment device according to claim 1, wherein at least one of a process and a line is included as a high-level configuration of said facility. The configuration is a configuration related to a power supply,
The risk assessment device according to claim 1, wherein at least one of a switchboard and a power system is included as a higher-level configuration of the facility. The configuration is a configuration related to a position,
The risk assessment device according to claim 1, wherein at least one of a floor and a building is included as a high-level configuration of said equipment. The attributes of the equipment are:
Substances handled, facility scale, corrosion information, number of failures, inspection cost, repair cost, operating temperature, inspection status during operation, inspection status during use, annual corrosion rate, relationship between usage environment and materials, occurrence of metal fatigue, production external skin temperature, humidity conditions at the installation site, properties of insulation, appearance of exterior panels, material properties, pressure, production loss and performance degradation, plant location and role, impact on production, parts procurement time, 2. The risk assessment device according to claim 1, which includes at least one of the degree of impact on products, the frequency of failures, the degree of importance of front and rear equipment, and the degree of pollution or disaster risk. A risk assessment device
A storage unit for storing a hierarchy setting database indicating the hierarchical relationship of the configuration with equipment as the lowest component, and a maintenance level setting database indicating the relationship between the failure risk evaluation score of the equipment and the recommended maintenance level of the equipment. prepared,
a step of calculating a failure risk evaluation point of the equipment based on the failure risk evaluation points set for each attribute of the equipment;
a step of referring to the hierarchy setting database and calculating, based on the calculated evaluation score of the equipment, the evaluation score of the failure risk of a higher-level configuration including the equipment as a component;
a step of referring to the maintenance level setting database and calculating a recommended maintenance level of the equipment based on the calculated evaluation score of the equipment;
Outputting to a display device a screen containing at least one of the equipment failure risk evaluation score and the recommended maintenance level , and the failure risk evaluation scores of a plurality of higher-level configurations to which the equipment belongs in the hierarchy of the configuration. the steps to take and the risk assessment method to be performed.

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