JP5899876B2 - Risk assessment device and risk assessment program - Google Patents

Description

  The present invention relates to a risk evaluation apparatus and a risk evaluation program for performing risk evaluation in maintenance of a plant or the like using an RBM (Risk Based Maintenance) method.

  Conventionally, an equipment maintenance plan support system that can efficiently carry out appropriate maintenance activities is known. This equipment maintenance plan support system appropriately selects the most appropriate maintenance method that suits the importance and risk of plant equipment and equipment and the deterioration and failure characteristics of equipment from a wide variety of maintenance methods of various kinds of plant equipment and equipment. It is possible to efficiently carry out maintenance activities for appropriate plant facilities and equipment, and to simultaneously maintain and improve the reliability of plant equipment and equipment and reduce maintenance costs (for example, patents) Reference 1).

  On the other hand, application of an RBM (Risk Based Maintenance) method has been attempted as a maintenance management method for relatively large individual devices or facilities. This RBM method defines “risk” related to maintenance of an object as the product of “Likelihood” and “Consequence”. The final risk is determined by evaluating the “probability of damage” and “severity of damage” in consultation with the house, and a maintenance plan is formulated based on the risk thus determined. is there.

  In the RBM method, the procedure for evaluating “ease of breakage” and “severity of damage” includes the following three procedures. That is, the first procedure is “inventory creation”, and hierarchically classifies the parts (diagnosis target parts) where damage may occur due to secular change with respect to the target object, and related information on each diagnosis target part, In other words, design information, operation information, inspection information, material information, etc. are investigated and collected to create a database, and the damage mechanism of each diagnosis target part is defined.

  The second procedure is “primary evaluation of the object”. Various experts, that is, designers, maintainers, drivers, structural researchers, material researchers, etc. ) Discusses the “probability of damage” and “the magnitude of damage”, converts the “probability of damage” and “the magnitude of damage” into evaluation indices, and sets each evaluation index to “probability of damage” Mapping on the risk matrix for “sa” and “damage magnitude” (primary evaluation).

  The third procedure is “Secondary assessment of the target (final assessment)”, and the risk regarding each diagnosis target part is re-evaluated from a comprehensive viewpoint including measures to reduce the risk by various specialists. Various experts reassess each risk matrix related to each diagnosis target part from a comprehensive viewpoint including the relationship between each diagnosis target part and cases related to other objects. An appropriate index (secondary evaluation) is determined. Each procedure is usually performed by professional staff and various specialists. In the first procedure, various information about the object is collected from the related departments by the specialist staff, and an inventory is created. In the second and third procedures, the primary evaluation and the secondary evaluation are performed by various experts in consultation with the list regarding each part created by the professional staff in the first procedure. Here, regarding the execution of the second procedure and the third procedure by various specialists, there is a problem in that it is necessary for a plurality of specialists in different specialized fields to meet and discuss together.

  In order to solve such a problem, in recent years, software that can easily obtain a primary evaluation result necessary for maintenance management of equipment by the RBM method has been developed. A computer that can index “ease of damage” and “magnification of damage” and map each evaluation index on a risk matrix for “ease of damage” and “magnification of damage”. By using a risk evaluation tool realized by software, it is possible to perform a primary evaluation (risk evaluation) by an RBM method without requiring a plurality of experts in different specialized fields.

JP 2006-252311 A

  By the way, when renovating a plant, considering the construction cost and construction period, whether to refurbish the part to be refurbished directly or replace it in units including the part to be refurbished. It is common to carry out repair work based on judgment. This is because it is not always optimal to directly repair the part to be repaired depending on the construction cost and construction period.

  However, since the conventional risk assessment tool is a risk assessment for each part constituting the plant, there is a problem that it is difficult to plan a repair work using this risk assessment result. For this reason, the contents of maintenance such as repair and update of equipment have been conventionally planned based on the knowledge of a person in charge who knows the state of the target plant or a skilled engineer who is familiar with similar plants. In this case, there is a problem such as a biased plan due to the subjectivity of the person in charge who makes the judgment and the owner of the plant and the intention of the user working strongly.

  The present invention has been made in view of such circumstances, and is capable of outputting a risk evaluation result that can be objectively determined when planning a maintenance for repairing a device or the like. An object is to provide an evaluation device and a risk evaluation program.

The present invention includes a design data storage unit that stores design data of a part constituting a plant, an inspection data storage unit that stores inspection result data of the part, and an operation data that stores operation result data of the plant. In a risk evaluation apparatus comprising a storage means and a risk evaluation means for inputting the design data, the inspection result data, and the operation result data and performing a risk evaluation in maintenance using the RBM technique, the risk evaluation apparatus includes a plurality of parts. Unit definition data storage means storing unit definition data defining units to be stored, evaluation result data storage means for storing result data of risk evaluation performed by the risk evaluation means, and stored in the design data storage means Design data, inspection result data stored in the inspection data storage means, and the evaluation Read result data storage means risk stored evaluation result data and, respectively, the unit definition data storage by referring to the unit definition data stored in the unit, a plurality of portions each of the design data constituting the unit Display data generation means for generating display screen data capable of listing the inspection result data and the risk evaluation result data in association with identification information of a target unit; and generated by the display data generation means And a display means for displaying the displayed display screen data.

The present invention includes a design data storage unit that stores design data of a part constituting a plant, an inspection data storage unit that stores inspection result data of the part, and an operation data that stores operation result data of the plant. A unit that defines storage means, risk evaluation means that inputs the design data, the inspection result data, and the operation result data, and performs a risk evaluation in maintenance using the RBM method, and a unit that includes a plurality of parts Risk that causes a computer on a risk evaluation apparatus to perform risk evaluation processing, comprising unit definition data storage means for storing definition data and evaluation result data storage means for storing result data of risk evaluation performed by the risk evaluation means An evaluation program, the design data stored in the design data storage means; A serial test data storage means test stored in the result data, the evaluation read result data storage means risk stored evaluation result data and the respective unit definition data stored in the unit definition data storage means The display screen that can list the design data, the test result data, and the risk evaluation result data of each of a plurality of parts constituting the unit in association with the identification information of the target unit A display data generation step for generating data and a display step for displaying the display screen data generated by the display data generation step are performed by a computer.

  According to the present invention, with reference to the unit definition data, the design data, test result data, and risk evaluation result data of each of the plurality of parts constituting the unit are listed in association with the identification information of the target unit. Display screen data that can be displayed and displayed so that it is possible to output risk assessment results that can be objectively determined when planning maintenance for equipment refurbishment, etc. The effect is obtained.

It is a block diagram which shows the structure of one Embodiment of this invention. It is a flowchart which shows operation | movement of the factor item selection part 1 shown in FIG. 3 is a flowchart showing operations of an RBM evaluation execution unit 10 and a display data generation unit 12 shown in FIG. It is a flowchart which shows operation | movement of the total process part 13 shown in FIG. (A) It is explanatory drawing which shows the table structure of the design data storage part 4 shown in FIG. 1, (b) It is explanatory drawing which shows the table structure of the relational data storage part 5 shown in FIG. It is explanatory drawing which shows the data structure of the map of the determination threshold value memory | storage part 6 shown in FIG. (A) It is explanatory drawing which shows the table structure of the selection item data storage part 7 shown in FIG. 1, (b) It is explanatory drawing which shows the table structure of the test | inspection data storage part 8 shown in FIG. (A) It is explanatory drawing which shows the table structure of the evaluation result data storage part 11 shown in FIG. 1, (b) It is explanatory drawing which shows the table structure of the unit definition data storage part 14 shown in FIG. FIG. 3 is an explanatory diagram illustrating an example of a display screen generated by the display data generation unit 12 illustrated in FIG. 1 and displayed on the display unit 3. FIG. 3 is an explanatory diagram illustrating an example of a display screen generated by the display data generation unit 12 illustrated in FIG. 1 and displayed on the display unit 3. It is explanatory drawing which shows an example of the risk ranking table | surface by a RBM method.

Hereinafter, a risk evaluation apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment. In this figure, the code | symbol 1 is a factor item selection part which selects a damage factor item according to the characteristic of the site | part which comprises a plant. Reference numeral 2 denotes an input unit composed of a keyboard, a mouse, and the like. Reference numeral 3 denotes a display unit composed of a liquid crystal display device or the like. Reference numeral 4 denotes a design data storage unit in which design data of each part constituting the plant is stored in advance. Reference numeral 5 denotes a relation data storage unit in which relation data necessary for selection processing for selecting a damage factor item is stored in advance. Reference numeral 6 denotes a determination threshold value storage unit in which a determination threshold value used for determination for selecting a damage factor item is stored in advance. Reference numeral 7 denotes a selection item data storage unit that stores selection result data of damage factor items selected by the factor item selection unit 1.

  Reference numeral 8 denotes an inspection data storage unit that stores data on the results of inspection (for example, visual inspection) of parts constituting the plant. Reference numeral 9 denotes an operation data storage unit in which plant operation data is stored. Reference numeral 10 denotes an RBM evaluation execution unit that performs risk evaluation by the RBM method. The RBM evaluation execution unit 10 uses a risk evaluation tool (for example, a known one that is commercially available) realized by software of a computer. Reference numeral 11 denotes an evaluation result data storage unit that stores risk evaluation result data evaluated by the RBM evaluation execution unit 10. Reference numeral 12 denotes a display data generation unit that generates a risk assessment result display screen and displays it on the display unit 3.

Next, the data structure of data stored in each storage unit shown in FIG. 1 will be described with reference to FIGS. First, the table structure of the design data storage unit 4 shown in FIG. 1 will be described with reference to FIG. The design data storage unit 4 stores design data for each part constituting the plant in advance based on a design drawing or the like. The part identification name includes a part group name (“pipe” in the example shown in FIG. 5A) and a part name (“ceiling pipe” in the example shown in FIG. 5A). The part identification number is an identification number that can uniquely identify this part. The design data number is an identification number assigned to each item of design data. The design data is the name of the design data (in the example shown in FIG. 5A, “outer diameter”, “thickness”, “use temperature”, “material”, “stress”). The value is a value of design data. In the example shown in FIG. 5A, a value “A” (for example, 100 degrees) is stored in “operating temperature” whose design data number is “5”, and “material” whose design data number is “6”. “B” (for example, a value meaning steel) is stored, and “C” (for example, 10 kg / m ² ) is stored in “Stress” whose design data number is “7”. It shall be.

Next, the table structure of the relational data storage unit 5 shown in FIG. 1 will be described with reference to FIG. The relation data storage unit 5 stores the design data number and the value of the applied map group in association with each other for each damage factor item defined in advance. The damage factor items are all damage factor items applicable in the RBM evaluation execution unit 10, and for example, “high temperature”, “low temperature”, “corrosion”, and the like are stored in advance. The design data number is stored in association with the design data number for which each damage factor is targeted. For example, when the damage factor item is “high temperature”, among the design data numbers stored in the design data storage unit 4, “5” (use temperature), “6” (material), “7” (stress ) Only. The application map group is a map for specifying a determination threshold map (stored in the determination threshold storage unit 6) to be applied when a damage factor item is selected with reference to design data of a target part. The group number is stored. In the example shown in FIG. 5 (b), when damage factor item is "hot" is meant applying a determination threshold map map group number is "1".

Next, the data structure of the determination threshold value storage unit 6 shown in FIG. 1 will be described with reference to FIG. In the determination threshold value storage unit 6, a determination threshold value map is stored in advance by grouping for each target damage factor. For example, when the damage factor is “high temperature”, map data in which the relationship between the temperature threshold value and the stress value is defined is stored for each material of the part. By referring to this map data, for example, in the material “B”, when the stress value is “C”, it can be obtained that the temperature threshold value is “a”.

  Next, the table structure of the selection item data storage unit 7 shown in FIG. 1 will be described with reference to FIG. The selection item data storage unit 7 is a result of selecting whether or not all damage factor items applicable in the RBM evaluation execution unit 10 are to be evaluated for each part stored in the design data storage unit 4. Data is stored. “1” is written when it is an evaluation target, and “0” is written when it is not an evaluation target. For example, in FIG. 7A, the part “pipe (ceiling pipe)” has “high temperature”, “corrosion”, and “D (other damage factor items)” as evaluation targets, and “low temperature”, “E ( “Other damage factor items)” and “F (other damage factor items)” indicate that they are not evaluation targets. The selection item data storage unit 7 is not the data stored in advance, but the factor item selection unit 1 executes the factor selection process and writes the result of this process.

Next, the table structure of the inspection data storage unit 8 shown in FIG. 1 will be described with reference to FIG. The inspection data storage unit 8 is divided into groups of parts (for example, “pipe”, “pipe”, “main pipe”), and inspection results related to damage factors for each part included in this part group. Are stored. FIG. 7B shows an example in which inspection data of three part groups “pipe”, “pipe”, and “main pipe” are stored. In the example shown in FIG. 7B, in the inspection of the ceiling pipe, an abnormality was found in the inspection relating to “high temperature”, “corrosion”, and “D (other damage factor items)” (“1” is written). means by which) the being, "F (other damage factors item)" are not evaluated ( "-" is written) it means that. Further, in the inspection of the front wall tube, which means that damage cause is not found abnormal test for "Corrosion" ( "0" is written).

  Next, the table structure of the evaluation result data storage unit 11 shown in FIG. 1 will be described with reference to FIG. In the evaluation result data storage unit 11, data of “ease of damage”, “severity of damage”, and “risk category” due to damage factors are written in association with each target part constituting the plant. In FIG. 8 (a), the “ceiling tube” is “high” in the “probability of breakage” and “large” in the damage factor “breakage of the tube”. It means that the risk assessment result that “risk category” is “change plan” is obtained.

  Here, referring to FIG. 11, “ease of damage” and “magnification of damage” output from the RBM evaluation execution unit 10 shown in FIG. The risk matrix regarding “ease of occurrence” and “severity of damage” will be described. FIG. 11 is a diagram showing a risk matrix. As shown in FIG. 11, the risk matrix is divided into four stages (high, medium, low, and fine) of “ease of damage” on the vertical axis, and four stages of “damage magnitude” (on the horizontal axis) (Fatal, Serious, Large, Small), and divided into four risk categories according to the combination of “probability of damage” and “severity of damage”. The risk category is divided into four levels: “acceptable”, “conditionally acceptable”, “plan change required”, and “unacceptable”.

  “Acceptable” means that no measures other than legal inspection are required. “Conditionally acceptable” means that the current inspection may be appropriately performed in the next periodic inspection. “Plan change required” refers to the following periodic inspections: (1) Improvement of inspection method, (2) Improvement of operating conditions or management conditions, (3) Installation of online monitoring, (4) Protection measures to reduce damage, This means that at least one of the measures needs to be implemented. “Unacceptable” means that measures (1) to (4) need to be implemented immediately. For example, when “Easy to cause damage” is “Medium” and “Damage magnitude” is “Major”, the risk category is “Change plan required”.

  Next, the table structure of the unit definition data storage unit 13 shown in FIG. 1 will be described with reference to FIG. In the unit definition data storage unit 13, for each unit identification name that can uniquely identify a unit, a part identification number of a part constituting the unit (included in the unit) is associated and stored. In the example shown in FIG. 8B, the unit with the unit identification name “U0001” is composed of three parts with the part identification numbers “B0001”, “B0008”, and “B0109”. ing. Further, a unit whose unit identification name is “U0009” means that it is composed of three units whose unit identification numbers are “U0001” and “U0003”. Further, a unit whose unit identification name is “U0012” means that it is composed of one unit and one part whose unit identification number is “U0004” and whose part identification number is “B0099”. Thus, the unit may be a set of other units or a set of other units and parts. The unit definition data storage unit 13 relates to the part identification number of the part constituting (including in the unit) the unit identification name that can uniquely identify the unit based on the design data of the target plant. Attached and stored in advance. When a design change occurs, the data stored in the unit definition data storage unit 13 is also changed according to the change contents.

  Next, the operation of the factor item selection unit 1 shown in FIG. 1 will be described with reference to FIG. First, when the operator performs an instruction operation to execute the factor item selection process from the input unit 2, the factor item selection unit 1 specifies one part stored in the design data storage unit 4 (Step S1). S1). For example, it is assumed that “pipe (ceiling pipe)” is specified. Subsequently, the factor item selection unit 1 refers to the relationship data storage unit 5 to identify one damage factor item (step S2), the design data number associated with the identified damage factor item, and the application. Read map group information. For example, it is assumed that “high temperature” shown in FIG. 5B is specified, and the design data number “5, 6, 7” and the application map group “1” are read out. And the factor item selection part 1 reads the value of the design data with the read design data number among the design data of the specified site | part ("pipe (ceiling pipe)") (step S3). Here, the use temperature “A”, the material “B”, and the stress “C” having the design data number “5, 6, 7” shown in FIG. 5A are read out.

  Next, the factor item selection unit 1 specifies the map group stored in the determination threshold value storage unit 6 based on the read value “1” of the applied map group, and the material is selected from the map group. The determination threshold map that is “B” is specified. Then, the factor item selection unit 1 refers to the determination threshold map whose material is “B”, and the temperature threshold value “a” corresponding to the stress value “C” read from the design data storage unit 4. Is obtained (see FIG. 6). Subsequently, the factor item selection unit 1 compares the obtained temperature threshold “a” with the use temperature “A” read from the design data storage unit 4, and the use temperature “A” becomes the temperature threshold “a”. ] Is exceeded (whether or not a> A) (step S4).

  As a result of this determination, if the use temperature “A” exceeds the temperature threshold value “a”, the damage factor currently specified for the part currently specified (here, the ceiling pipe) is determined. It is determined that the item is an evaluation target, and “1” is written in the pipe (ceiling pipe) / high temperature field of the selection item data storage unit 7. On the other hand, if the use temperature “A” does not exceed the temperature threshold value “a”, the damage factor item currently specified is evaluated for the currently specified portion (here, the ceiling pipe). It is determined that it is not the target, and “0” is written in the tube (ceiling tube) / high temperature field of the selection item data storage unit 7 (step S5). FIG. 7A shows an example in which the damage factor item “high temperature” is judged to be an evaluation target and “1” is written for the part “ceiling tube”.

  Next, the factor item selection unit 1 determines whether or not all the damage factor items have been processed (step S6). If there is a damage factor item that has not yet been processed, the process returns to step S2. The next damage factor item is specified and the above-described processing is repeated. On the other hand, when processing is performed for all damage factor items, the factor item selection unit 1 determines whether or not processing has been performed for all target parts constituting the plant (step S7), and has not yet been processed. If the target part exists, the process returns to step S1, specifies the next target part, and repeats the above-described processing. On the other hand, when the process is performed for all target parts, the factor item selection unit 1 ends the process. By this processing operation, data on whether or not all damage factor items are evaluation targets for all target parts constituting the plant is obtained, and the selection item data storage unit 7 shown in FIG. The data having the table structure shown in FIG. 7A is stored.

When the operation for displaying the selection item data is performed in the input unit 2, the factor item selection unit 1 reads out the data stored in the selection item data storage unit 7 and displays it on the display unit 3. May be. By doing so, the data written in the selection item data storage unit 7 by the operator can be confirmed on the screen. The data stored in the selection item data storage unit 7 may be modifiable based on the data input from the input unit 2. By doing so, it becomes possible to manually correct the selection item data automatically selected by the factor item selection unit 1.

  Next, operations of the RBM evaluation execution unit 10 and the display data generation unit 12 shown in FIG. 1 will be described with reference to FIG. First, when the factor item selection unit 1 receives a notification indicating that the damage factor item selection process has been completed, the RBM evaluation execution unit 10 reads the selection item data stored in the selection item data storage unit 7 (step S1). S11). Subsequently, the RBM evaluation execution unit 10 reads data stored in the design data storage unit 4, the inspection data storage unit 8, and the operation data storage unit 9 (step S12), and executes risk evaluation processing by the RBM method ( Step S13). Since the risk assessment process by the RBM method uses a known risk assessment tool realized by computer software, detailed description of the process is omitted here. At this time, the RBM evaluation execution unit 10 does not perform the risk evaluation process for the damage factor items that are not the evaluation targets based on the read selection item data. Therefore, the execution time of the risk evaluation process by the RBM method can be greatly shortened.

  Next, the RBM evaluation execution part 10 writes the data of the result of the risk evaluation process by the RBM method in the evaluation result data storage part 11 (step S14). With this processing operation, the evaluation result data storage unit 11 shown in FIG. 1 stores data having the table structure shown in FIG. The RBM evaluation execution unit 10 completes the writing process to the evaluation result data storage unit 11 with respect to the display data generation unit 12 when the process of writing the data of the result of the risk evaluation process to the evaluation result data storage unit 11 is completed. Notify you. In response to this, the display data generation unit 12 reads the evaluation result data stored in the evaluation result data storage unit 11 (step S15). Subsequently, the display data generation unit 12 reads each data stored in the selection item data storage unit 7, the design data storage unit 4, and the inspection data storage unit 8 (step S16).

  Next, the display data generation unit 12 synthesizes the read data, and stores the design data read from the design data storage unit 4 and the test results and evaluation result data read from the test data storage unit 8 for each target part. Display screen data capable of associating and listing the risk evaluation results read from the unit 11 is generated (step S17). Then, the display data generation unit 12 displays the generated display screen data on the display unit 3 (step S18). An example of the display screen displayed on the display unit 3 is shown in FIG. The display screen displayed on the display unit 3 includes an identification name (tube (ceiling tube)) of the target part, design data (use temperature, material, stress), inspection result data (high temperature, corrosion, etc.), and risk assessment. The resulting data is related and displayed so that these data can be listed.

  On this display screen, only the data used for the evaluation is displayed among the design data, and only the selected items are displayed based on the data stored in the selected item data storage unit 7 for the inspection results. As a result, it is possible to provide a display screen in which a list can be displayed. Since the data input screen and the evaluation result output screen were different as in the conventional evaluation tool, for example, in order to perform work such as extracting events that cause the target part to be at high risk, Each time it is necessary to move between a plurality of display screens for confirmation, it is possible to solve the problem that the confirmation work becomes complicated and takes a long time for confirmation work.

  If the type of plant to be evaluated has been determined, paying attention to the fact that there are usually only a few damage factors for the part to be evaluated in that plant, the damage factors for risk evaluation are designated as design data. Since the selection is automatically made based on the determination threshold value, it is not necessary to evaluate and examine even those that cannot be generated, and it is possible to reduce unnecessary work. In addition, since the evaluation input data and the risk evaluation result are displayed on the same display screen, there is no need to perform extra operations when moving the display screen for input or confirmation. Faster evaluation work is possible while maintaining accuracy.

  Next, with reference to FIG. 4, an operation in which the display data generation unit 12 displays the risk evaluation result by grouping each part for each unit will be described. First, when the operator performs an operation of instructing to display the risk evaluation result by grouping each part for each unit from the input unit 2, the display data generation unit 12 performs the evaluation stored in the evaluation result data storage unit 11. Result data is read (step S21). At this time, the evaluation result data storage unit 11 needs to store risk evaluation result data by the above-described operation. Subsequently, the display data generation unit 12 reads each data stored in the selection item data storage unit 7, the design data storage unit 4, and the inspection data storage unit 8 (step S22).

  Next, the display data generation unit 12 refers to the unit definition data stored in the unit definition data storage unit 13, combines the read data, and reads the target unit from the design data storage unit 4. The display screen data that summarizes the design data of the parts, the examination results of the parts read from the examination data storage unit 8 and the risk evaluation results of the parts read from the evaluation result data storage unit 11 and can list these data in relation to each other. Generate (step S23). Then, the display data generation unit 12 displays the generated display screen data on the display unit 3 (Step S24). An example of the display screen displayed on the display unit 3 is shown in FIG. The display screen displayed on the display unit 3 displays design data (uses) for each of the identification names (pipe (ceiling pipe), main pipe (water supply pipe)) of the part constituting the target unit (unit identification name “U0001”). (Temperature, material, stress), inspection result data (high temperature, corrosion, etc.) and risk assessment result data are associated with each other and displayed so that these data can be listed.

  On this display screen, only the data used for the evaluation is displayed among the design data, and only the selected items are displayed based on the data stored in the selected item data storage unit 7 for the inspection results. At the same time, because the parts that make up the unit are displayed together, it is possible to display a list of risk assessment results that can be objectively determined when planning maintenance, such as refurbishing equipment. . Since the conventional evaluation tool is an evaluation result output screen for each part, for example, in order to perform an operation of extracting an event that causes the target part to be a high risk, It is necessary to move between a plurality of display screens while searching for a part constituting the unit, and there is a problem that the confirmation work becomes complicated and takes a long time for the confirmation work. Such a problem can be solved by using the screen.

  Note that a program for realizing the functions of the factor item selection unit 1 and the display data generation unit 12 shown in FIG. 1 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system. The risk evaluation process may be performed by executing. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer system” includes a WWW system having a homepage providing environment (or display environment). The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included.

  The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

  Using an RBM (Risk Based Maintenance) method, it is possible to apply to a use in which it is indispensable to perform risk assessment in maintenance of a plant or the like.

  DESCRIPTION OF SYMBOLS 1 ... Factor item selection part, 2 ... Input part, 3 ... Display part, 4 ... Design data storage part, 5 ... Relation data storage part, 6 ... Determination threshold value memory | storage , 7 ... selection item data storage unit, 8 ... inspection data storage unit, 9 ... operation data storage unit, 10 ... RBM evaluation execution unit, 11 ... evaluation result data storage unit, 12 ... Display data generator, 13 ... Unit definition data storage

Claims (2)

Design data storage means for storing design data of parts constituting the plant;
Inspection data storage means storing inspection result data of the part;
Operation data storage means in which operation result data of the plant is stored;
In the risk evaluation device comprising a risk evaluation unit that inputs the design data, the inspection result data, and the operation result data, and performs a risk evaluation in maintenance using the RBM method,
Unit definition data storage means for storing unit definition data defining units composed of a plurality of parts;
Evaluation result data storage means for storing result data of risk evaluation performed by the risk evaluation means;
The design data stored in the design data storage means, the inspection result data stored in the inspection data storage means, and the risk assessment result data stored in the evaluation result data storage means, respectively, Referring to unit definition data stored in the unit definition data storage means, a plurality of parts each of the design data constituting the unit, and the inspection result data, the risk assessment result data and the target unit Display data generating means for generating display screen data that can be listed in association with identification information;
And a display means for displaying the display screen data generated by the display data generating means. Design data storage means for storing design data of parts constituting the plant;
Inspection data storage means storing inspection result data of the part;
Operation data storage means in which operation result data of the plant is stored;
A risk evaluation means for inputting the design data, the inspection result data, and the operation result data, and performing a risk evaluation in maintenance using an RBM method;
Unit definition data storage means for storing unit definition data defining units composed of a plurality of parts;
A risk evaluation program for causing a computer on a risk evaluation apparatus to perform risk evaluation processing, comprising an evaluation result data storage means for storing result data of risk evaluation performed by the risk evaluation means,
The design data stored in the design data storage means, the inspection result data stored in the inspection data storage means, and the risk assessment result data stored in the evaluation result data storage means, respectively, Referring to unit definition data stored in the unit definition data storage means, a plurality of parts each of the design data constituting the unit, and the inspection result data, the risk assessment result data and the target unit A display data generation step for generating display screen data that can be listed in association with identification information;
A risk evaluation program for causing a computer to perform a display step of displaying the display screen data generated by the display data generation step.

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