JP6655740B1 - Plant maintenance support equipment - Google Patents

Abstract

An object of the present invention is to assist in determining whether additional inspection is necessary at the time of inspection of a plant. According to one embodiment, a plant maintenance support apparatus according to an embodiment uses a test result including a plurality of measurement values indicating damage to each of the plurality of inspection sites of a plant to perform each of the inspections. A damage probability calculation unit for calculating a damage probability indicating a probability that the damage of the part has reached an allowable limit, and displaying the plurality of inspection parts in a format in which a magnitude relationship between the damage probabilities can be grasped. A first display command generating unit configured to generate a first display command to be displayed on the device. [Selection diagram] Fig. 1

Description

  The present disclosure relates to a plant maintenance support device.

  For example, plants such as water treatment facilities, chemical product manufacturing plants, and boilers perform periodic inspections and take necessary measures such as detailed inspections, repairs, and replacements according to the inspection results. For example, in the plant life diagnosis support device described in Patent Literature 1, the inspection result obtained by the inspection is input, and the life of the inspection part is evaluated. Then, based on the result of the evaluation, it is determined whether or not a measure such as repair or replacement is necessary (see Patent Document 1).

JP-A-3-160201

In the plant life diagnosis support device described in Patent Literature 1, when the confidence level of the evaluation result is low due to lack of information or abnormal data input, an inspection item for obtaining a high confidence level evaluation result or Additional inspection details, such as inspection methods, are presented.
Even if the reliability of the evaluation result is high, it is considered that depending on the evaluation result of the life, it may be better to perform an additional check. However, in the above-mentioned Patent Document 1, that point is mentioned. Not.
As described above, in the plant life diagnosis support device described in Patent Literature 1, the life of the inspection part is evaluated based on the inspection result, and it is easy to determine whether replacement or repair is necessary based on the life evaluation result. . However, for example, it is difficult to determine whether or not additional inspection should be performed in a limited number of man-hours.

  In view of the above circumstances, at least one embodiment of the present invention aims to assist in determining whether additional inspection is required when inspecting a plant.

(1) A plant maintenance support device according to at least one embodiment of the present invention includes:
For each of a plurality of inspection sites in a plant, an inspection result including a plurality of measurements indicating damage to each of the inspection sites is used to indicate a probability that the damage of each of the inspection sites has reached an allowable limit. A damage probability calculation unit for calculating a damage probability,
A first display command generating unit configured to generate a first display command for displaying the plurality of inspection sites on a display device in a format in which a magnitude relationship between the respective damage probabilities can be grasped;
Is provided.

  According to the configuration of the above (1), the damage probability indicating the probability that the damage to the inspection site has reached the allowable limit is calculated, so that an index suitable for indicating the state of the inspection site at the time of the inspection is obtained. can get. Further, according to the configuration (1), since the magnitude relationship between the damage probabilities can be grasped, necessity of the exchange, repair, additional inspection, and the like and the priority thereof are clarified. For example, if the operator determines that the damage probability displayed on the display device is clearly high, it can be determined that repairs, replacements, and the like are necessary. Further, for example, if the operator determines that the damage probability displayed on the display device is clearly low, it can be determined that no countermeasure is necessary. For example, if the operator determines that the damage probability displayed on the display device is not clearly higher or not clearly lower, it can be determined that an additional inspection is necessary.

(2) In some embodiments, in the configuration of (1), the damage probability calculation unit calculates the measurement value as a population estimated by statistical processing from the plurality of measurement values of each of the inspection sites. Of the distribution reaching the threshold of the measured value corresponding to the allowable limit is calculated as the damage probability.

  According to the configuration of the above (2), an index suitable for representing the state of the inspection site at the time of performing the inspection can be obtained.

(3) In some embodiments, in the configuration of the above (1) or (2),
A determination unit for determining whether or not abnormal data is included in the plurality of measurement values associated with each of the test sites;
Further comprising
The first display command generation unit causes the display device to display the plurality of inspection sites in a format in which a magnitude relationship between the respective damage probabilities can be grasped, and includes the abnormal data among the plurality of inspection sites. The display device is configured to generate, as the first display command, a display command for causing the display device to display the test site where the test result is obtained so as to be identifiable.

For example, when a plurality of inspection parts are arranged on the display device in the order of the damage probability and displayed on the display device, the inspection parts having a low damage probability are less noticeable on the display screen of the display device than the inspection parts having a high damage probability. When abnormal data is included in the measurement value of the inspection part that is inconspicuous, it is easy to overlook that the abnormal data is included.
In this regard, according to the configuration of the above (3), since the inspection site where the inspection result including the abnormal data is obtained can be identified on the display screen of the display device, the abnormal data is included in the measured value. This makes it easier for the operator to grasp the fact.

(4) In some embodiments, in the configuration of the above (3), the abnormality data is the measurement value indicating that damage to the inspection site has reached the allowable limit, or It is at least one of the measured values, which are values that cannot be taken.

  According to the configuration of (4), at least one of the measurement value indicating that the damage to the inspection site has reached the allowable limit or the measurement value that cannot be taken at the inspection site is included. Can be understood.

(5) In some embodiments, in the configuration of the above (3) or (4),
The determination unit determines at least whether or not the measurement value is a value that cannot be taken in the inspection site,
The damage probability calculation unit calculates the damage probability without using the measurement value determined by the determination unit as a value that cannot be taken at the test site in the abnormality data, in calculating the damage probability. .

  According to the configuration (5), the reliability of the calculated damage probability can be improved.

(6) In some embodiments, in any of the above configurations (1) to (5),
A second display command generation unit configured to generate a second display command for displaying a recommended inspection range of the plant on the display device based on the specification information of the plant;
A test result receiving unit configured to receive an input of the test result regarding the test site included in the recommended test range.

  According to the above configuration (6), the recommended inspection range of the plant can be presented. Further, according to the configuration of (6), it is possible to input an inspection result regarding an inspection part included in the recommended inspection range.

(7) In some embodiments, in the configuration of (6), the second display command generation unit causes the display unit to display the recommended inspection range of the plant on the display device in descending order of damage tendency. It is configured to generate a display command.

  According to the above configuration (7), the recommended inspection range of the plant can be presented in descending order of the damage tendency, so that the operator can grasp the inspection range to be inspected with priority among the recommended inspection ranges.

(8) In some embodiments, in the configuration of the above (6) or (7),
The past inspection results associated with the inspection site included in the recommended inspection range, or of the past inspection results obtained for another plant including a portion corresponding to the inspection site included in the recommended inspection range Based on at least one, a damage degree calculation unit for calculating the damage degree of the test site included in the recommended test range,
A third display command generation unit configured to generate a third display command for displaying the degree of damage of the inspection site included in the recommended inspection range on the display device;
Is provided.

  According to the configuration of (8), the degree of damage to the inspection site can be presented prior to the current inspection based on the past inspection result in the own plant or another plant. Among them, the operator can grasp the part to be inspected with priority. Thereby, an efficient inspection becomes possible.

(9) In some embodiments, in the configuration of the above (8), the third display command generation unit transmits the degree of damage to the inspection site to the display device in a format that allows the position of the inspection site to be grasped. The third display command is generated so as to include a display command for displaying.

  According to the configuration of (9), the operator can easily grasp the position of the part to be inspected with priority among the plurality of inspection parts included in the recommended inspection range.

(10) In some embodiments, in the configuration of the above (8) or (9), the third display command generation unit stores the position and the name of the inspection region as the third display command on the display device. The third display command is generated so as to include a display command for displaying.

  According to the above configuration (10), the operator can easily grasp the position and the name of the inspection site.

  According to at least one embodiment of the present invention, it is possible to assist in determining whether or not additional inspection is necessary at the time of inspecting a plant.

It is a figure showing the whole plant maintenance support device composition concerning some embodiments. 9 is a flowchart of a maintenance support process performed by the plant maintenance support device according to some embodiments. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is an example of the display screen displayed on a display device. It is a figure showing typically composition of a sewage treatment facility and sewage piping.

Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. Absent.
For example, expressions representing relative or absolute arrangement such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial” are strictly described. Not only does such an arrangement be shown, but also a state of being relatively displaced by an angle or distance that allows the same function to be obtained.
For example, expressions such as "identical", "equal", and "homogeneous", which indicate that things are in the same state, not only represent exactly the same state, but also have a tolerance or a difference to the extent that the same function is obtained. An existing state shall also be represented.
For example, the expression representing a shape such as a square shape or a cylindrical shape not only represents a shape such as a square shape or a cylindrical shape in a strictly geometrical sense, but also an uneven portion or a chamfer as long as the same effect can be obtained. A shape including a part and the like is also represented.
On the other hand, the expression “comprising”, “comprising”, “including”, “including”, or “having” one component is not an exclusive expression excluding the existence of another component.

FIG. 1 is a diagram illustrating an overall configuration of a plant maintenance support device according to some embodiments. The plant maintenance support device 1 according to some embodiments has an arithmetic device 100. The arithmetic device 100 includes a peripheral circuit such as a processor (not shown) and a memory (not shown). The arithmetic device 100 virtually has functional blocks of an input receiving unit 110, a recommended inspection range extracting unit 102, a damage degree calculating unit 103, a damage probability calculating unit 105, a determining unit 107, and a display command generating unit 120. . The input device 130, the database 150, and the display device 170 are connected to the plant maintenance support device 1 according to some embodiments.
In the following description, an example in which a plant to be supported by the plant maintenance support device 1 according to some embodiments is, for example, a sewage treatment facility and a sewage pipe from a sewage generation source to a sewage treatment facility. This will be described in detail below.

  FIG. 15 is a diagram schematically illustrating an example of a configuration of a sewage treatment facility and a sewage pipe in a certain municipality. For convenience of explanation, in the following description, it is assumed that the sewage treatment facility (sewage treatment plant) 10 is provided for each municipality. For convenience of explanation, in the following description, it is assumed that the sewage treatment facility 10 in each municipality treats sewage generated from factories, homes, public facilities, and the like existing in the municipality. The number of actual sewage pipes is gradually reduced from the plurality of existing sewage generation locations to the sewage treatment plant 10, but the number is simplified in FIG. 15 for convenience of explanation.

  Examples of sewage generation locations include, for example, factories 21, homes 22, and public facilities 23. The system of the sewage pipe 30 that guides the sewage generated in the factory 21 to the sewage treatment plant 10 is referred to as, for example, a factory line 31. The system of the sewage pipe 30 that guides the sewage generated in each household 22 to the sewage treatment plant 10 is called, for example, a household line 32. A system of the sewage pipe 30 that guides the sewage generated in the public facility 23 to the sewage treatment plant 10 is called, for example, a public facility line 33.

  Each line 31 to 33 according to some embodiments is divided into a plurality of sections and managed for management in maintenance and the like. Each section in each of the lines 31 to 33 is represented as a section A, a section B, a section C, a section D,..., For example, in order from upstream to downstream. In some embodiments, adjacent sections include, for example, a place where a buried sewage pipe 30 intersects a road (street), a connection place with another sewage pipe 30, or a letter or large letter in Japan. , Towns, chomes, etc.

  Each section according to some embodiments is further divided into a plurality of points and managed (see FIG. 9 described later). Each point is represented as, for example, point 1, point 2, point 3, point 4,... In order from upstream to downstream. In some embodiments, it is assumed that adjacent points are separated by, for example, a joint part of the sewage pipe 30. Further, in the sewage pipe 30 in which the length between the joints at both ends is long, for example, it may be divided into a plurality of points every several tens of cm to several m in length.

  Here, before describing the configuration of each unit in the plant maintenance support device 1 according to some embodiments, an overview of functions realized by the plant maintenance support device 1 according to some embodiments will be described. The plant maintenance support device 1 according to some embodiments is for supporting, for example, a periodic inspection of the sewage pipe 30 so that an efficient inspection operation can be performed.

  In the plant maintenance support device 1 according to some embodiments, as will be described in detail later, each inspection is performed based on the inspection result obtained by the inspection performed on each of the plurality of inspection sites of the sewage pipe 30. It is possible to calculate a damage probability indicating a probability that the damage of the site has reached the allowable limit. In the plant maintenance support device 1 according to some embodiments, as described in detail later, a first display for displaying a plurality of inspection sites on the display device 170 in a format in which the magnitude relationship between the damage probabilities can be grasped. Commands can be generated.

Further, in the plant maintenance support apparatus 1 according to some embodiments, as described later in detail, a second display command for displaying the recommended inspection range of the plant on the display device 170 prior to the inspection of the inspection site. Can be generated.
Further, in the plant maintenance support apparatus 1 according to some embodiments, as described later in detail, prior to the inspection of the inspection site, damage to the inspection site included in the recommended inspection range is performed based on past inspection results. A third display command for displaying the degree on the display device 170 can be generated.

(Input reception unit 110)
The input receiving unit 110 according to the plant maintenance support device 1 according to some embodiments is configured to receive input content input from the input device 130. The input content received by the input receiving unit 110 is, for example, information on the specifications of the sewage treatment facility 10 and inspection results such as measured values obtained by the inspection. The inspection result is configured to be received by the inspection result receiving unit 111 in the input receiving unit 110. As a result, it is possible to input an inspection result regarding an inspection part included in the recommended inspection range.
The input receiving unit 110 stores the received input content in the database 150.

Note that the input device 130 according to the plant maintenance support device 1 according to some embodiments may be an input device such as a keyboard or a mouse, and can read information from a memory card or the like in which inspection results are stored. It may be a reading device. Further, the input device 130 may be an interface for receiving data transmitted by wire or wirelessly.
The input device 130 may be installed at the same place as the plant maintenance support device 1 and may be directly connected to the plant maintenance support device 1 by wire or wirelessly. For example, they may be connected via a public communication network or the like. When the plant maintenance support device 1 and the input device 130 are connected via, for example, a public communication network or the like, the input device 130 is connected to an input device such as a keyboard and a mouse, as well as to the input device. And a communication device for transmitting information input from the input device to a public communication network.

(Recommended inspection range extraction unit 102)
The recommended inspection range extraction unit 102 according to the plant maintenance support device 1 according to some embodiments includes a municipal sewage treatment facility 10 and a sewage pipe 30 (hereinafter referred to as municipalities) specified by input from the input reception unit 110, as described later. , Also referred to as own facility), the inspection history (inspection result), repair history, replacement history, or a plurality of other municipal sewage treatment facilities 10 different from the own facility stored in the database 150. Based on the inspection history, repair history, replacement history, accident history, and the like of the sewage pipe 30 (hereinafter, also referred to as other facilities), a recommended inspection range in which the inspection is recommended in the inspection to be performed this time is extracted.
Information on the calculated recommended inspection range can be presented to the operator prior to the current inspection, as described later.

As described above, the database 150 according to the plant maintenance support device 1 according to some embodiments includes an inspection history, a repair history, a replacement history, and an inspection history about a plurality of other facilities. Repair history, replacement history, accident history, etc. are stored.
The database 150 may be installed at the same location as the plant maintenance support device 1 and may be directly connected to the plant maintenance support device 1 by wire or wirelessly. For example, they may be connected via a public communication network or the like.

(Damage degree calculation unit 103)
The damage degree calculation unit 103 according to the plant maintenance support device 1 according to some embodiments calculates the damage degree of an inspection part included in the recommended inspection range of the own facility, as described later. Here, the degree of damage to the inspection site is an index indicating the degree of damage to the inspection site, more precisely, to the site where the inspection is recommended. For example, if the thickness of the sewage pipe 30 is the thickness of the own facility, the degree of damage to the sewage pipe 30 is, for example, the amount of decrease in the thickness of the sewage pipe 30 (thickness reduction). In this case, the damage degree calculator 103 calculates, for example, the difference between the original thickness of the sewage pipe 30, that is, the thickness before the start of use, and the thickness of the sewage pipe 30 measured in the previous inspection, that is, the thickness reduction amount. Is calculated. The damage degree calculation unit 103 determines that the damage degree is higher as the calculated thinning amount is larger.
As described above, the degree of damage to the inspection site is an index that indicates the degree of damage obtained from past inspection results.
The information on the calculated degree of damage can be presented to the operator prior to the current inspection together with the information on the recommended inspection range described above, as described later.

(Damage probability calculation unit 105)
The damage probability calculation unit 105 according to the plant maintenance support device 1 according to some embodiments, as described later, damages each inspection site for each of the plurality of inspection sites of the sewage treatment facility 10 and the sewage pipe 30. The damage probability of each inspection site is calculated using the inspection result including the plurality of measurement values shown. Here, the damage probability of the inspection part indicates the probability that the damage of each inspection part has reached the allowable limit, which can be obtained from the current inspection.
Specifically, the damage probability calculation unit 105 estimates a distribution of measured values as a population estimated by statistical processing from a plurality of measured values of each inspection site. In this estimation, for example, it is assumed that the distribution is applicable to any of various probability distributions such as a standard normal distribution, a t distribution, and a chi-square distribution. The damage probability calculation unit 105 estimates the distribution of the measured values as a population, assuming that the plurality of measured values of each inspection site follow the assumed distribution. Then, the damage probability calculation unit 105 calculates, as the damage probability, the ratio of the portion that has reached the threshold value Th of the measurement value corresponding to the allowable limit.
Here, the permissible limit is a threshold value at which it is determined that repair or replacement is required for a specified range including the inspection site if the actual numerical value at the inspection site has reached. For example, in the case of the thickness of the sewage pipe 30, the allowable limit is a thickness threshold value for determining whether or not the sewage pipe 30 needs repair or replacement. Is below the threshold, it is determined that the sewage pipe 30 needs to be repaired or replaced.

  As described above, according to the plant maintenance support apparatus 1 according to some embodiments, the damage probability indicating the probability that the damage to the inspection part has reached the allowable limit is calculated as described above, and the inspection is performed. An index suitable for indicating the state of the examination site at the time is obtained.

(Determining unit 107)
The determination unit 107 according to the plant maintenance support device 1 according to some embodiments determines whether or not abnormal data is included in a plurality of measurement values related to each inspection part, as described later. . That is, the determination unit 107 determines whether or not abnormal data is included in the measurement values obtained by the inspection among the input contents received by the input reception unit 110.
Here, the abnormal data includes, for example, the following data (1) and (2).
(1) Measurement value indicating that damage to the inspection site has reached the allowable limit (2) Measurement value that cannot be taken at the inspection site

In addition, the measurement value which is a value that cannot be taken in the inspection site and is, for example, the measurement value is 30 mm when the thickness at the inspection site before use is 20 mm, for example, is 20 mm. As in the case, it is a measurement value that is a physically impossible value.
The reason why such a numerical value is measured includes, for example, (a) a case where a completely different inspection site is inspected, or (b) a region immediately adjacent to the correct inspection site but which is obtained from the correct inspection site. (C) when the inspection part is correct but an incorrect inspection method is used, and (d) simple erroneous input. And so on.
The case (b) means that, for example, in the thickness measurement, when a member (another member) different from the member related to the inspection site overlaps a site immediately adjacent to the correct inspection site, And the case where the thickness of the portion where the member according to (1) and the another member overlap is measured.

(Display command generation unit 120)
The display command generation unit 120 according to the plant maintenance support device 1 according to some embodiments generates a display command to be displayed on the display device 170, as described later. Note that the display command generation unit 120 according to the plant maintenance support device 1 according to some embodiments includes a first display command generation unit 121, a second display command generation unit 122, and a third display command generation unit 123. Contains.
The first display command generation unit 121 is configured to generate a first display command for displaying a plurality of inspection sites on the display device 170 in a format in which the magnitude relationship between the damage probabilities can be grasped.
The second display command generation unit 122 is configured to generate a second display command for displaying the recommended inspection range of the plant on the display device 170.
The third display command generation unit 123 is configured to generate a third display command for causing the display device to display the degree of damage of the inspection site included in the recommended inspection range.

  FIG. 2 is a flowchart illustrating a maintenance support process performed by the plant maintenance support device 1 according to some embodiments. The processing in each step shown in the flowchart of FIG. 2 is executed by a processor (not shown) of the arithmetic device 100.

  The maintenance support processing performed in the plant maintenance support apparatus 1 according to some embodiments includes a specification input step S11, a recommended inspection range extraction step S13, a damage degree calculation step S15, a recommended inspection range display step S17, It includes an inspection result input step S21, an abnormal data determination step S23, a damage probability calculation step S25, and a calculation result display step S27.

(Specification input process S11)
The specification input step S11 is a step of receiving input of plant specification information prior to plant inspection.
FIG. 3 is a diagram illustrating an example of a display screen displayed on the display device 170 in the specification input step S11. For example, when inspecting the sewage pipe 30, the display command generation unit 120 issues a display command for displaying an input display 210 for inputting the specifications of the sewage treatment facility 10 on the display device 170 as shown in FIG. 3. Generated and transmitted to the display device 170.
For example, when information (for example, a municipal name) for identifying each individual sewage treatment facility 10 is input from the input device 130, the arithmetic device 100 receives the sewage treatment facility for the information (for example, A city in XX prefecture) Among the ten pieces of specification information, the specification information registered in advance is read from the database 150. Then, the arithmetic device 100 causes the display command generation unit 120 to generate a display command for causing the display device 170 to display the input display 210 for the sewage treatment facility 10 in City A, for example. The display command generation unit 120 outputs the generated display command to the display device 170.
The pre-registered specification information includes, for example, the sewage flow rate and population (eg, less than 100,000, 100,000 to 500,000, 500 to 1,000,000, and 1,000,000 It is information about the approximate population of people and the like, and the construction date of the sewage treatment facility 10 in A City (for example, the operation start date of the sewage treatment facility 10 in A City).

In the example of the input display 210 shown in FIG. 3, the sewage flow rate and population read from the database 150 by the arithmetic device 100 and information on the construction date of the sewage treatment facility 10 in City A are input in the input fields 212, 213, and 214 in advance. The display is displayed on the display device 170 in the state of being turned.
In FIG. 3, three asterisks (***) described in the input fields 212, 213, and 214 indicate that information is input to the input fields 212, 213, and 214. In the example of FIG. 3, three asterisks in the input column 212 indicate that the sewage flow rate has already been input. Similarly, three asterisks in the input field 213 indicate that the population has already been input, and three asterisks in the input field 214 have already input the construction date of the sewage treatment facility 10 in City A. It represents that.
In the following description, in each of FIGS. 4 and subsequent figures, three asterisks indicate that some information has already been input.

The operator uses the input device 130 to input the scheduled date of the inspection into the inspection date input column 211 of the input display 210 displayed on the display device 170. In addition, if the sewage flow rate in the sewage treatment facility 10 in the city A has changed from the previous level due to, for example, a change in population, the operator can use the input device 130 to display the input display 210 on the display device 170. In the sewage flow rate input column 212, the sewage flow rate in the sewage treatment facility 10 in the city A is input. For example, if the population is changing, the worker uses the input device 130 to enter the population in the population input field 213 of the input display 210 displayed on the display device 170.
The information on the sewage flow rate, the population, and the construction date of the sewage treatment facility 10 in City A may not be input in the input columns 212, 213, and 214 in advance. If the information on the sewage flow rate, the population, and the construction date of the sewage treatment facility 10 in City A has not been input in advance in the input columns 212, 213, 214, the worker may use the sewage treatment facility in the City A, Information on the ten construction dates is entered in input fields 212, 213, and 214.

  After the input of the specification information, when the operator selects the inspection range display button 217, the input receiving unit 110 of the arithmetic device 100 receives the input of the specification information from the input device 130. Then, the arithmetic unit 100 performs the processes in the recommended inspection range extracting step S13 and the damage degree calculating step S15 described below, and displays information on the recommended inspection range on the display device 170 in the recommended inspection range displaying step S17. .

(Recommended inspection range extraction step S13)
First, the recommended inspection range extraction step S13 will be described. In the recommended inspection range extracting step S13, the recommended inspection range extracting unit 102 of the arithmetic device 100 extracts a recommended inspection range in which the inspection is recommended in the inspection scheduled to be performed this time.
That is, as described above, the recommended inspection range extraction unit 102 uses the inspection history, the repair history, and the replacement history for the own facility stored in the database 150 to recommend the recommended inspection to be performed in the currently scheduled inspection. Extract a range. When extracting the recommended inspection range, for example, the recommended inspection range extracting unit 102 extracts the sewage treatment facilities 10 and sewage from other municipalities having the same sewage flow rate and population as those of the city A related to the own facility among the other facilities described above. Based on the inspection history, repair history, replacement history, accident history, and the like of the pipe 30 (hereinafter also referred to as similar other facility), a portion where wear is likely to progress is extracted, and a recommended inspection range in the own facility is extracted. May be.

  For example, as in the case where the own facility is a relatively new facility, the information amount of each of the above histories about the own facility stored in the database 150 may not be sufficient to extract the recommended inspection range. Can be Even in such a case, based on the inspection histories, repair histories, replacement histories, accident histories, etc. of similar other facilities, extract the parts where wear is likely to progress, and extract the recommended inspection range in the own facility. By doing so, the extraction accuracy of the recommended inspection range can be improved. That is, by referring to the inspection history, repair history, replacement history, accident history, and the like of similar other facilities, it is possible to reduce omission of extraction of an inspection range that is highly necessary to be extracted as a recommended inspection range. In addition, by referring to the inspection history, repair history, replacement history, accident history, and the like of similar other facilities, it is possible to suppress extraction of an inspection range that is not necessary to be extracted as a recommended inspection range.

(Damage degree calculation step S15)
After extracting the recommended inspection range, the damage degree calculation unit 103 of the arithmetic device 100 calculates the damage degree of the inspection part included in the recommended inspection range of the own facility in the damage degree calculation step S15. That is, the damage degree calculation unit 103 refers to the information stored in the database 150 and, as described above, the state before the use of the own facility and the previous inspection Calculate the degree of damage from the measured value in. Further, for example, the damage degree calculation unit 103 refers to the information stored in the database 150 for the similar other facility and corresponds to the inspection part included in the recommended inspection range of the own facility among the parts of the similar other facility. Calculate the degree of damage to the part to be damaged

  For example, as in the case where the own facility is a relatively new facility, the amount of information about the own facility stored in the database 150 may not be sufficient to calculate the degree of damage. Even in such a case, the accuracy of calculating the degree of damage can be improved by calculating the degree of damage in the own facility with reference to information on similar other facilities.

(Recommended inspection range display step S17)
FIG. 4 is a diagram illustrating an example of a display screen displayed on the display device 170 in the recommended inspection range display step S17. As described above, when the inspection range display button 217 is selected on the input display 210 shown in FIG. 3, the arithmetic unit 100 performs the processes in the above-described recommended inspection range extracting step S13 and damage degree calculating step S15. Then, the recommended inspection range display 220 shown in FIG. That is, in the recommended inspection range display step S17, the second display command generation unit 122 of the arithmetic device 100 generates a second display instruction for displaying the recommended inspection range display 220 shown in FIG. Output to the display device 170.
Thereby, the recommended inspection range of the plant can be presented.

  In addition, the second display command generation unit 122 preferentially assigns the recommended inspection range extracted by the recommended inspection range extraction unit 102 to an inspection range having a higher damage tendency, that is, the recommended inspection range display shown in FIG. At 220, a second display command may be generated and output to the display device 170 such that it appears first (upward). Here, the damage tendency is the degree of damage estimated from the inspection history, repair history, replacement history, and the like for the own facility stored in the database 150. The damage tendency may be the degree of damage estimated from the inspection history, the repair history, the replacement history, and the like stored in the database 150 for the similar other facility.

As described above, according to the plant maintenance support device 1 according to some embodiments, the second display command generation unit causes the display 170 to display the recommended inspection ranges of the plant in descending order of the damage tendency. Commands can be generated.
Thereby, the recommended inspection range of the plant can be presented in descending order of the damage tendency, so that the operator can grasp the inspection range to be inspected with priority among the recommended inspection ranges.

In the recommended inspection range display 220 shown in FIG. 4, for example, a selection column 221, a line display column 222, an event display column 223, and an inspection method display column 224 are displayed in a tabular form for each inspection site included in the recommended inspection range. Is displayed with.
The selection field 221 is an input field for selecting a part for displaying detailed information, as described later.
The line display column 222 is a display column for displaying the inspection site. For example, in the case of the sewage pipe 30, the sewage discharged from a certain factory 21 is the factory line 31 or the sewage discharged from the home 22 is The type of the inspection section such as the flowing home line 32 is displayed.
The event display column 223 is a display column for displaying an event assumed for each inspection site (also referred to as an inspection line or simply a line).
The inspection method display field 224 is a display field for displaying a recommended inspection method for each line.
The detail button 227 is a button for displaying more detailed information on the line selected in the selection field 221 on the display device 170.

For example, as shown in FIG. 4, when the operator selects the factory line displayed on the uppermost line (first line) among the lines displayed on the recommended inspection range display 220 and selects the detail button 227, The second display command generation unit 122 of the arithmetic device 100 causes the display device 170 to display the recommended inspection range detail display 230 shown in FIG. 5 for the line related to the line selected in the selection field 221 shown in FIG. Is generated and transmitted to the display device 170.
In the following description, for information displayed on the display device 170 in the form of a table, a horizontal row of the table is called a row, and a vertical row of the table is called a column. That is, the top row in the table is the first row, and the rows are sequentially the second row, the third row,. For example, in the recommended inspection range display 220 of FIG. 4, a number is input in the leftmost column. In the example shown in FIG. 4, the number input in the leftmost column matches the row number in the recommended inspection range display 220. However, if the recommended inspection range display 220 is sorted for each line name, the number entered in the leftmost column will not match the line number in the recommended inspection range display 220.

For example, in the recommended inspection range detailed display 230 shown in FIG. 5, for the factory line selected in the selection column 221 in FIG. 4, a certain section A in the factory line, a certain section B in the factory line, and a certain section in the factory line are selected. Information is displayed in a table format for each more detailed section of the factory line, such as section C.
The selection field 231 is an input field for selecting a part for displaying information on the degree of damage, as described later.
The line display column 232 is a display column for displaying the inspection site.
The event display column 233 is a display column for displaying an event assumed for each inspection site.
The section display column 234 is a display column for displaying the detailed position of the examination region.
The remarks display column 235 includes, for each detailed position displayed in the section display column 234, whether or not there is a countermeasure history such as a repair history or a replacement history, and whether or not a portion where a high probability of damage was found in past inspections is included. This is a display field for displaying information such as "".

The detailed position reference column 236 is a display column for instructing display of information on a more detailed position.
For example, as shown in FIG. 5, when the detailed position reference field 236 on the first line of the recommended inspection range detailed display 230 is selected, as shown in FIG. Is displayed.

FIG. 6 is a diagram illustrating an example of a display screen schematically illustrating a damaged state of the sewage pipe 30. The detailed position display 240 shown in FIG. 6 schematically shows the damaged state of the section for the row where the detailed position reference column 236 is selected in the recommended inspection range detailed display 230 shown in FIG. In the detailed position display 240 shown in FIG. 6, a section is schematically shown by dividing it into a plurality of squares for each point (see FIG. 9). In the example illustrated in FIG. 6, the section A is schematically illustrated, and one square 241 indicates a prescribed range of the section A, that is, one point. Therefore, each position of each cell 241 in the detailed position display 240 represents an approximate position in the section A.
In the example shown in FIG. 6, the degree of damage in the section A is represented by shading of the squares, and the higher the density of coloring of the squares, the higher the degree of damage calculated in the damage degree calculating step S15. Represents.

That is, as shown in FIG. 5, when the detailed position reference column 236 of any row in the recommended inspection range detailed display 230 is selected, the process proceeds to the recommended inspection range display step S17, and the third display command generation of the arithmetic device 100 is performed. The unit 123 generates a third display command for causing the display device 170 to display the detailed position display 240 shown in FIG. 6 and the detailed position display 240 shown in FIGS. Output to That is, the third display command is a display command for causing the display device 170 to display the degree of damage of the inspection site included in the recommended inspection range. The third display command generation unit 123 includes a display command for displaying the degree of damage to the inspection site on the display device 170 in a format that allows the position of the inspection site to be grasped, as shown in FIGS. 6 to 8. 3 Generate a display command.
As described above, according to the plant maintenance support device 1 according to some embodiments, the operator can easily grasp the position of a part to be inspected with priority among a plurality of inspection parts included in the recommended inspection range.

The detailed position display 240 in FIG. 6 is a detailed position display 240A indicating the damage degree of the section A calculated in the damage degree calculation step S15. For example, when the selected facility switching unit 242 is instructed to display the damage degree of another similar facility calculated in the damage degree calculation step S15, the similarity calculated in the damage degree calculation step S15 as shown in FIG. The detailed position display 240B indicating the degree of damage of the section corresponding to the section A among the facilities is displayed on the display device 170. The section corresponding to the section A among the similar other facilities is, for example, a line of the same type as the section A (the factory line 31) in the similar other facility, and is, for example, a layout of a sewage pipe, that is, a straight pipe. This is a section in which the layout of the section or the bent section is similar.
Further, when the selected facility switching unit 242 is instructed to display both the damage degree of the section A calculated in the damage degree calculation step S15 and the damage degree of the similar other facility, as shown in FIG. The detailed position display 240C, which superimposes the damage degree of the section A calculated in the degree calculation step S15 and the damage degree of the section corresponding to the section A among similar other facilities, is displayed on the display device 170.
As described above, according to the plant maintenance support apparatus 1 according to some embodiments, the degree of damage to the inspection site can be presented prior to the current inspection based on the past inspection results of the own facility or another similar facility. In addition, the operator can grasp a site to be inspected with priority among a plurality of inspection sites included in the recommended inspection range. Thereby, an efficient inspection becomes possible.

  Instead of the detailed position display 240B shown in FIG. 7, a section corresponding to the section A in the own facility, that is, a line of the same type as the section A (factory line 31) in the own facility, for example, The degree of damage of a section in which the layout of the sewage pipe is similar may be displayed on the display device 170. Further, instead of the detailed position display 240C shown in FIG. 8, the damage degree of the section A and the damage degree of the section corresponding to the section A among the own facilities are displayed on the display device 170 in a superimposed manner. Is also good.

Note that, for example, in FIG. 6, when the scroll instruction unit 243 is operated to give an instruction to display an area below the detailed position display 240 shown in FIG. As shown, the explanatory diagram 245 of the section A is displayed on the display device 170. The explanatory diagram 245 includes, for example, information on the section A, such as the name and position of each point obtained by further dividing the section A into a plurality of areas between the start point and the end point of the section A.
That is, in some embodiments, the third display command generation unit 123 issues the third display command to include, as the third display command, a display command for causing the display device 170 to display the position and name of the inspection part. Generate.
Thus, even an unskilled worker can easily grasp the position and name of the inspection site by checking the explanatory diagram 245.

  Here, in FIG. 5, when any row is selected in the selection field 231 and the export button 237 is selected, the process proceeds to the inspection result input step S21.

(Inspection result input step S21)
In the inspection result input step S21, an input display 310 of the inspection result as shown in FIG. That is, in FIG. 5, when any row is selected in the selection field 231 and the export button 237 is selected, the display command generation unit 120 determines whether a part corresponding to the row selected in the selection field 231 in FIG. A display command for displaying the input display 310 of the inspection result is generated and output to the display device 170.
In the input display 310 shown in FIG. 10, the operator inputs, for example, the start date of the inspection in the construction start date input column 311 and inputs the end date of the inspection in the construction period end date input column 313. After inspecting each recommended inspection site in the recommended inspection range, the operator inputs the inspection result into the measurement value input field 315 in the input display 310 shown in FIG.

  FIG. 11 is a diagram showing a display screen 320 displaying a list of inspection results. That is, in the input display 310 shown in FIG. 10, when the input of the inspection result is completed and an instruction to store the input content in the database 150 is issued, the arithmetic device 100 stores the input content in the measurement value input field 315 in the database. 150. Then, the display command generation unit 120 generates a display command for causing the display device 170 to display a display screen 320 displaying a list of inspection results, and outputs the display command to the display device 170. As a result, the display screen 320 is displayed on the display device 170.

(Abnormal data determination step S23)
When either the damage probability calculation instruction button 321 or the future risk calculation instruction button 322 is selected on the display screen 320 shown in FIG. 11, the process proceeds to the abnormal data determination step S23, and the determination unit 107 executes the input measurement. It is determined whether or not abnormal data is included in the value. That is, the determination unit 107 determines whether there is a measurement value corresponding to the above (1) or (2).

(Damage probability calculation step S25)
In the damage probability calculation step S25, the damage probability calculation unit 105 calculates the damage probability of each inspection part based on the measurement value input in the inspection result input step S21, as described above. In the abnormal data determination step S23, the damage probability calculation unit 105 uses the measurement value corresponding to the above (1), which indicates that the damage to the inspection site has reached the allowable limit, in calculating the damage probability. However, a measurement value corresponding to the above (2), which cannot be taken at the inspection site, is not used for calculating the damage probability.
As described above, according to the plant maintenance support device 1 according to some embodiments, by not using the measurement value corresponding to the above (2), which is a value that cannot be taken at the inspection part, for calculating the damage probability, The reliability of the calculated damage probability can be improved.

When the damage probability calculation instruction button 321 is selected on the display screen 320 shown in FIG. 11, the damage probability calculation unit 105 calculates the damage probability of each inspection part at the time of performing the inspection.
Further, when the future risk calculation instruction button 322 is selected on the display screen 320 shown in FIG. 11, the damage probability calculation unit 105 calculates the damage probability of each inspection site at the time of performing the inspection, and The damage probability is also calculated. Specifically, the damage probability calculation unit 105 predicts future changes in individual measurement values at each inspection site, and calculates a future damage probability based on the predicted values. For example, in the case of a pipe wall thickness, a future wall thickness is calculated from a wall thickness reduction rate obtained from past inspection results and a measured value of each wall thickness. Then, the future damage probability is calculated based on the calculated thickness values.
As described above, according to the plant maintenance support device 1 according to some embodiments, not only the current damage probability of the inspection site but also the future damage probability can be obtained. This makes it easier to determine whether or not a measure such as repair or replacement of the inspection site is necessary.

(Calculation result display step S27)
In the calculation result display step S27, the damage probability calculated in the damage probability calculation step S25 is displayed on the display device 170. The first display command generation unit 121 generates a first display command for displaying the plurality of inspection sites on the display device 170 in a format in which the magnitude relationship between the respective damage probabilities can be grasped, and outputs the first display command to the display device 170. I do.
For example, when the damage probability calculation instruction button 321 is selected on the display screen 320 shown in FIG. 11, the damage probability calculated as described above is displayed as a damage probability display 400A shown in FIG. Displayed in format. That is, when the damage probability calculation instruction button 321 is selected on the display screen 320 shown in FIG. 11, the process proceeds to the calculation result display step S27, and the first display command generation unit 121 displays the damage probability display 400A shown in FIG. A first display command to be displayed on the display device is generated and output to the display device 170. In the damage probability display 400A shown in FIG. 12, numerical values of the damage probability of a plurality of inspection sites are displayed in, for example, a damage probability display column 406.
Note that the damage probability for each point in each section may be represented by shading of the square coloring as in the detailed position display 240 shown in FIG.

When the future risk calculation instruction button 322 is selected on the display screen 320 shown in FIG. 11, the damage probability calculated as described above is displayed as a damage probability display 400B shown in FIG. Displayed in format. That is, when the future risk calculation instruction button 322 is selected on the display screen 320 shown in FIG. 11, the process proceeds to the calculation result display step S27, and the first display command generation unit 121 displays the damage probability display 400B shown in FIG. A first display command to be displayed on the display device is generated and output to the display device 170.
As shown in FIG. 13, the transition of the damage probability is displayed on the graph 421 representing the future transition of the damage probability for the inspection site selected in the selection field 401 in the damage probability display 400B. In the damage probability display 400B shown in FIG. 13, numerical values of the damage probability of a plurality of inspection parts may be displayed in a table format, as in the damage probability display column 406 in the damage probability display 400A shown in FIG. .

  In the damage probability display 400 (400A, 400B) shown in FIGS. 12 and 13, the inspection part with the higher damage probability is displayed in the upper part. Further, as shown in a row 411, for an inspection part having a higher probability of damage than a preset threshold value, the line for the inspection part is colored so as to stand out. That is, the first display command generation unit 121 generates a first display command for displaying the plurality of inspection sites on the display device 170 in a format in which the magnitude relationship between the respective damage probabilities can be grasped. Output to

  As described above, according to the plant maintenance support device 1 according to some embodiments, it is possible to grasp the magnitude relationship between the damage probabilities. Therefore, the necessity of the exchange, repair, additional inspection, and the like, and the priority thereof are determined. Be clear. For example, if the operator determines that the damage probability displayed on the display device is clearly high, it can be determined that repairs, replacements, and the like are necessary. Further, for example, if the operator determines that the damage probability displayed on the display device is clearly low, it can be determined that no countermeasure is necessary. For example, if the operator determines that the damage probability displayed on the display device is not clearly higher or not clearly lower, it can be determined that an additional inspection is necessary.

  Further, as shown in a row 415, even if the measured value includes abnormal data even in an inspection part having a relatively low damage probability, the line about the inspection part is colored so as to be conspicuous.

  As described above, according to the plant maintenance support device 1 according to some embodiments, the first display command generation unit 121 displays a plurality of inspection sites in a format in which the magnitude relationship between the respective damage probabilities can be grasped. A display command is generated as the first display command to be displayed on the display device 170 and to be displayed on the display device 170 so that the test part including the abnormal data among the plurality of test parts is obtained.

For example, when a plurality of inspection parts are arranged in the descending order of the damage probability and displayed on the display device 170, an inspection part with a low damage probability is less noticeable on the display screen of the display device 170 than an inspection part with a high damage probability. When abnormal data is included in the measurement value of the inspection part that is inconspicuous, it is easy to overlook that the abnormal data is included.
In that regard, according to the plant maintenance support apparatus 1 according to some embodiments, the inspection site where the inspection result including the abnormal data is obtained can be identified on the display screen of the display device 170, so that the measured value It is easy for an operator to grasp that the abnormal data is included in the data.
Further, according to the plant maintenance support device 1 according to some embodiments, a measurement value indicating that damage to the inspection site has reached an allowable limit, or a measurement value that cannot be taken at the inspection site. It can be understood that at least one was included.

  For example, when a row 415 is selected in FIGS. 12 and 13, an information display 500 related to the measurement value of the examination region related to the row 415 is displayed on the display device 170 as shown in FIG. That is, in FIG. 12 or FIG. 13, when the row 415 is selected, the display command generation unit 120 generates a display command for displaying the information display 500 as shown in FIG. Output to the device 170.

The information display 500 shown in FIG. 14 includes a table 510 for displaying information on a part including abnormal data, and a list 520 of inspection data of the part.
The information display 500 shown in FIG. 14 is a case where the inspection site including the abnormal data is a tube, and is an example of a case where the inspection content is a measurement of the wall thickness of the tube.
In the example illustrated in FIG. 14, the table 510 includes, for example, a line display column 511, a section display column 512, a nominal thickness display column 513, a required thickness display column 514, and an exclusion threshold display column 515. ing.
The line display column 511 is a display column for displaying a part (line) containing abnormal data.
The section display column 512 is a display column for displaying a detailed position of the part.

  The nominal thickness display field 513 is a display field for displaying the nominal thickness at the site. In addition, the nominal thickness is a designed thickness of the part before the use of the own facility is started. For example, in the example shown in FIG. 14, it is assumed that the nominal thickness is set to 14.4 (mm).

  The required thickness display column 514 is a display column for displaying a thickness (required thickness) required at the site. The required thickness is, for example, the allowable limit described above. For example, in the example shown in FIG. 14, it is assumed that the required thickness is set to 12.33 (mm). In the example illustrated in FIG. 14, the determination unit 107 determines that a measured value that is less than the required thickness is a measured value that corresponds to the above (1) and indicates that damage to the inspection site has reached an allowable limit. I do.

  The exclusion threshold display field 515 is a threshold for the determination unit 107 to determine whether to use the measured value for calculating the damage probability of the site. For example, in the example shown in FIG. 14, the threshold is set to 18 (mm). In the example illustrated in FIG. 14, the determination unit 107 determines that the measurement value exceeding the threshold value is a value that cannot be taken in the inspection site, which corresponds to the above (2).

The list 520 displays a plurality of measured values in the site in, for example, a table format. In the example shown in FIG. 14, the measurement values at five locations in the region are displayed in display columns 521 to 525. In the list 520, for example, the data No. The measurement value of 5 is a measurement value that corresponds to the above (1) and indicates that the damage to the inspection site has reached the allowable limit, and is colored, for example, so that the display column 525 is conspicuous. Similarly, in the list 520, for example, the data No. The measurement value of No. 4 corresponds to the above (2) and is a measurement value that cannot be taken at the inspection site, and is colored, for example, so that the display column 524 is conspicuous.
As described above, the display command generation unit 120 according to some embodiments performs the display data for displaying the list 520 such that the abnormal data is displayed in a different display form from the other data in the list 520. Is generated and output to the display device 170.

The present invention is not limited to the above-described embodiment, and includes a form in which the above-described embodiment is modified and a form in which these forms are appropriately combined.
For example, as shown in FIG. 6 described above, in the above-described embodiment, the damage degree of the section A calculated in the damage degree calculation step S15, that is, the damage degree of the section A obtained from the past inspection result for the section A The index indicating the degree of is represented by shading of the cells according to the magnitude of the value.
However, for example, instead of the damage degree of the section A, the section A may be represented by shading according to the magnitude of the damage probability of the section A obtained based on the past inspection result. . In this case, for example, if the wall thickness of the pipe is used, the current wall thickness may be calculated from the wall thickness reduction rate for the section A obtained from the past inspection result and the past measured value of each wall thickness. Good. Then, the current damage probability may be calculated based on the calculated thickness values.

  In the above description, a case where the plant to be supported by the plant maintenance support device 1 according to some embodiments is, for example, a sewage treatment facility and a sewage pipe from a sewage generation source to a sewage treatment facility. Has been described as an example. However, a plant to be supported by the plant maintenance support device 1 according to some embodiments may be a plant such as a water supply facility (water purification plant), a water supply pipe for a water supply, a chemical product manufacturing plant, a boiler, or the like. .

1 Plant Maintenance Support Device 100 Arithmetic Device 103 Damage Degree Calculation Unit 105 Damage Probability Calculation Unit 111 Inspection Result Receiving Unit 121 First Display Command Generation Unit 122 Second Display Command Generation Unit 123 Third Display Command Generation Unit 150 Database 170 Display Device

Claims (9)

For each of a plurality of inspection sites in a plant, an inspection result including a plurality of measurements indicating damage to each of the inspection sites is used to indicate a probability that the damage of each of the inspection sites has reached an allowable limit. A damage probability calculation unit for calculating a damage probability,
A first display command generating unit configured to generate a first display command for displaying the plurality of inspection sites on a display device in a format in which a magnitude relationship between the respective damage probabilities can be grasped;
Equipped with a,
The damage probability calculation unit reaches a threshold value of the measurement value corresponding to the permissible limit in a distribution of the measurement values as a population estimated by the statistical processing from the plurality of measurement values of each of the inspection sites. A plant maintenance support apparatus that calculates a ratio of a damaged portion as the damage probability . For each of a plurality of inspection sites in a plant, an inspection result including a plurality of measurements indicating damage to each of the inspection sites is used to indicate a probability that the damage of each of the inspection sites has reached an allowable limit. A damage probability calculation unit for calculating a damage probability,
A first display command generating unit configured to generate a first display command for displaying the plurality of inspection sites on a display device in a format in which a magnitude relationship between the respective damage probabilities can be grasped;
A determination unit for determining whether an abnormality data in said plurality of measured values associated with each of the test sites are included,
Bei to give a,
The first display command generation unit causes the display device to display the plurality of inspection sites in a format in which a magnitude relationship between the respective damage probabilities can be grasped, and includes the abnormal data among the plurality of inspection sites. It is configured to generate, as the first display command, a display command for displaying on the display device the test site where the test result is obtained so as to be identifiable.
Plant maintenance support equipment. The abnormal data according to claim 2 , wherein the measurement value indicating that the damage to the inspection site has reached the allowable limit, or at least one of the measurement values that cannot be taken at the inspection site. The plant maintenance support device described in the above. The determination unit determines at least whether or not the measurement value is a value that cannot be taken in the inspection site,
The damage probability calculation unit calculates the damage probability without using the measurement value determined by the determination unit as a value that cannot be taken at the test site in the abnormality data, in calculating the damage probability. plant maintenance support system according to claim 2 or 3. For each of a plurality of inspection sites in a plant, an inspection result including a plurality of measurements indicating damage to each of the inspection sites is used to indicate a probability that the damage of each of the inspection sites has reached an allowable limit. A damage probability calculation unit for calculating a damage probability,
A first display command generating unit configured to generate a first display command for displaying the plurality of inspection sites on a display device in a format in which a magnitude relationship between the respective damage probabilities can be grasped;
A second display command generation unit configured to generate a second display command for displaying a recommended inspection range of the plant on the display device based on the specification information of the plant;
Obtain Bei and a test result receiving unit for receiving an input of the test results on the test site included in the recommended test range
Plant maintenance support equipment. The plant according to claim 5 , wherein the second display command generation unit is configured to generate the second display command such that a recommended inspection range of the plant is displayed on the display device in descending order of damage tendency. Maintenance support equipment. The past inspection results associated with the inspection site included in the recommended inspection range, or of the past inspection results obtained for another plant including a portion corresponding to the inspection site included in the recommended inspection range Based on at least one, a damage degree calculation unit for calculating the damage degree of the test site included in the recommended test range,
A third display command generation unit configured to generate a third display command for displaying the degree of damage of the inspection site included in the recommended inspection range on the display device;
Plant maintenance support device according to claim 5 or 6 comprising a. The third display command generation unit generates the third display command so as to include a display command for displaying the degree of damage of the inspection site on the display device in a format in which the position of the inspection site can be grasped. A plant maintenance support device according to claim 7 . The third display command generating unit, as the third display command, claim 7 generates the third display command to include the display instruction for displaying the position and name of the examination site to the display device or 9. The plant maintenance support device according to 8 .

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