JP2005148867A - Maintenance support device to deal with failure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that while a conventional restoration maintenance support device in the generation of the failure of a steel or power generation plant facility or the like is provided with a host computer having a maintenance support database, and incorporates a knowledge base for abnormality diagnosis and an inference mechanism for inferring maintenance support in order to specify any abnormal component, it takes a long time to perform input/output operations, and it is impossible to quickly specify the factor of any failure in order to provide a device for quickly specifying the factor of the failure without making it necessary to manually input/output information. <P>SOLUTION: A question contents setting part makes a plurality of questions with a plant manager in a YES/NO format, and a narrowing part performs narrowing, pinpoints a cause and decides restoration procedure. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a recovery and maintenance support device when a failure occurs in a plant facility such as a steel plant or a power plant.

  Conventionally, a distributed control system consisting of a central processing unit and a process computer connected to a control unit distributed in a plant via a communication network, and a maintenance support unit and a host computer, the maintenance support unit has knowledge for abnormality diagnosis. A base and an inference mechanism for inferring abnormality diagnosis and maintenance support for the control device, the host computer has a database necessary for maintenance support, and the abnormality diagnosis rule of the control device and inference The mechanism or dialogue means is used to fix the abnormal part part, fix the part obtained from the maintenance support database, and manage the name, type and other information related to the part obtained from the maintenance support database, and spare parts management It is shown that a situation or the like is displayed in CRT (see, for example, Patent Document 1).

JP-A-5-168070 (FIG. 1, column 0004)

However, what is shown in Patent Document 1 is
(1) Abnormality occurrence information is not necessarily transmitted immediately, and abnormality diagnosis is performed using knowledge-based abnormality diagnosis rules and inference mechanisms or interactive means, so accurate and quick identification of failure sites can be performed. Absent.
(2) Since input / output is performed interactively by a personal computer as an input / output device, the function of improving the efficiency of input / output operations is insufficient, and it is impossible to respond quickly.
(3) There is no function for speeding up procurement when spare parts of failed parts are not stocked in the customer after the failed part is identified.
(4) The accident occurrence phenomenon often appears in a different form in the same plant, but there is no function that can deal with such a latent point.
Etc. had various problems.

  The present invention solves the above-mentioned problems, investigates the cause from accident information input to response method output, speeds up the procurement of substitutes, and may spread due to the cause after specifying the faulty part. An object of the present invention is to provide a failure support maintenance apparatus capable of extracting and outputting a certain related abnormality occurrence site.

  The failure-corresponding maintenance support apparatus according to the present invention includes an input unit, a control unit, and a narrowing-down unit. The input unit is provided with a maintenance conclusion customer authentication unit, and a personal portable information terminal device issued by a plant facility manager The failure information from is input through the maintenance conclusion customer authentication unit, the control unit is provided with a comparison determination unit and a question content setting unit, the comparison determination unit when the failure information is input from the input unit, The failure procedure is identified and the recovery procedure is determined by comparison with the restoration procedure database, failure analysis database, and case database provided in the control unit. A plurality of questions regarding failure information are made to the person, and the narrowing-down unit narrows down.

In the failure handling maintenance support apparatus of the present invention, the failure information is input via the maintenance conclusion customer authentication unit, so that the failure information is immediately transmitted and a quick accident countermeasure system can be established.
In addition, since the cause of the failure is identified by asking a plurality of questions about the failure information and narrowing down, there is an excellent effect that an appropriate and quick accident countermeasure can be taken.

Embodiment 1 FIG.
Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a failure handling support apparatus 100 when a failure occurs for some reason in various facilities constituting, for example, a steel plant, a power plant or the like, according to Embodiment 1 of the present invention. The failure support apparatus 100 includes three main parts: an input unit 1, a control unit 2, and a narrowing-down unit 3. A maintenance conclusion customer authentication unit 4 related to a maintenance contract for plant equipment is provided in the preceding stage of the input unit 1. The control unit 2 includes a comparison / determination unit 5, a question content setting unit 6, a recovery procedure database 7, a case database 8, a failure analysis database 9, and a customer-specific system configuration database 10, and the control unit 2 further includes a narrowing unit 3. The display unit 11 displays the output on the screen.

Next, the operation will be described. In addition, description will be given on the assumption that the failure generating device is a board of a computer in a subsystem provided in a plant facility, including the first embodiment and the embodiments described later.
First, when any failure occurs, failure information is issued from the personal portable information terminal device 12 owned by the plant facility manager to the failure-handling maintenance support device 100 via a telephone line or the like. The maintenance conclusion customer authentication unit 4 provided in the input unit 1 confirms that the failure information can be accessed, that is, a customer who contracts a plant facility maintenance contract with a plant facility manufacturer. . When H / W error information, S / W error information, etc. from the plant equipment manager are input to the input unit 1, the input unit 1 analyzes and extracts only valid information. The customer-specific system configuration database 10 in the control unit 2 collects only related information in the stored database, and prepares for input information from customers to be added thereafter.

  When the control unit 2 inputs the information, the comparison / determination unit 5 performs comparison / determination with the recovery procedure database 7, the case database 8, and the failure analysis database 9 to identify the cause of the failure obtained from the input information, and the recovery procedure. To decide. In this process, in order to estimate a failure phenomenon or occurrence location or cause, or when there are a plurality of the cause identification / recovery procedures, the question content setting unit 6 asks the plant facility manager a plurality of questions and The failure factor is narrowed down by 3 to identify the failure cause and determine the recovery procedure, and display the result on the display unit 11 on the screen.

  The question to the plant facility manager is made in an interactive manner by the cooperation of the question content setting unit 6 and the narrowing-down unit 3. In order to determine the cause of the failure, the recovery procedure database 9 stores, for example, tree-form information that can specify a possible failure location of the board according to the content of the failure phenomenon, and the logical product condition is met by the plurality of pieces of extracted information. The narrowing part 3 derives the result. In addition, the explanation of the failure specific part by the question content setting unit 6 includes a representation unit that can be explained with a specific treatment method including a photograph of the board and a figure, and measures can be taken by repeating the answer in the YES / NO format. derive.

The maintenance conclusion customer authentication unit 4 will be described in detail.
Typically, plant equipment manufacturers have a vast number of plant deliveries with various specifications to many customers over the past decades. And the maintenance of the plant is not always done with the customer. Therefore, if failure information is obtained from a customer who has not entered into a maintenance contract, the customer may not be immediately dealt with. In particular, there is a problem that a rapid failure repair system cannot be established, for example, when emergency accident countermeasures are required. On the other hand, when the maintenance conclusion customer authentication unit is not provided, there is the same problem as described above.
In the failure handling maintenance support apparatus 100 according to the first embodiment, the maintenance conclusion customer authentication unit 4 is provided in the preceding stage of the input unit 1, so that an appropriate measure is immediately taken in the case of a customer who has concluded the maintenance. Is possible.

Embodiment 2. FIG.
Next, the second embodiment will be described with reference to the drawings.
In the first embodiment, information from the personal portable information terminal device issued by the plant facility manager is input to the maintenance conclusion customer authentication unit 4, but in this second embodiment, the maintenance contract concluded telephone (fixed / mobile) / PHS) By input using a line.
FIG. 2 is a block diagram showing a configuration of the failure handling maintenance support apparatus 100 according to the second embodiment. In FIG. 2, a speech text conversion unit 13 is provided in the preceding stage of the input unit 1, and a text speech conversion unit 14 is provided in the subsequent stage of the narrowing-down unit 3. 15 is connected. Other components are the same as those shown in FIG. 1 of the first embodiment.

Next, the operation will be described. Failure information is input to the input unit 1 via the voice text conversion unit 13 via the telephone 15 with which the maintenance contract has been concluded by the plant facility manager. In this case, since the acceptance is made with the telephone number for which the maintenance contract is concluded, a failure countermeasure system is immediately established.
Since the operation leading to the identification of the cause of failure after the acceptance and the determination of the recovery procedure is the same as in the first embodiment, the description thereof is omitted. When the failure cause is identified and the recovery procedure is determined, the result is output to the customer's telephone 15 via the text-to-speech converter 14.

  In the second embodiment, since failure information is transmitted by voice, the system is simplified and the communication line usage fee is reduced.

Embodiment 3 FIG.
Next, Embodiment 3 will be described with reference to the drawings. In FIG. 3, a speech text conversion unit 13 connected to the maintenance conclusion customer authentication unit 4 a having an authentication function based on an authentication ID number is provided in the front stage of the input unit 1 of the failure support apparatus 100, and a downstream part of the narrowing down unit 3. A text-to-speech conversion unit 14 is provided. Other components are the same as those shown in FIG.

  Next, the operation will be described. Failure information is issued by the plant equipment manager. This information does not depend on the telephone and may be any kind of telephone. The telephone information is input through the voice text conversion unit 13 through a confirmation function using an authentication ID number provided in the maintenance conclusion customer authentication unit 4a. As described above, in the third embodiment, an accessible customer (confirmation of maintenance contract conclusion customer) is recognized by the authentication ID number confirmation function in the maintenance conclusion customer authentication unit 4a and output to the input unit 1. The subsequent process for identifying the cause and determining the recovery procedure is the same as in the first embodiment, and the result is sent to the customer's telephone 15 via the text-to-speech conversion unit 14 provided after the narrowing-down unit 3. Is output.

  In the third embodiment, a general telephone may be used without depending on the type of telephone, and access is possible through a confirmation function using an authentication ID number. It is a convenient and effective means on the site side of the facility.

Embodiment 4 FIG.
In the fourth embodiment, as shown in FIG. 4, the control unit 2 shown in FIG. 1 of the first embodiment is provided with a related abnormality occurrence unit extracting unit 17, and the other embodiments are the same as those in the above-described embodiment. 1 is the same as FIG. This related abnormality occurrence part extraction part 17 has a function of predicting and extracting an abnormal part where a failure may occur after the cause of the failure is specified, and also spreading to other parts of the plant equipment in addition to the manifested trouble. It is.

  Next, the operation will be described. After inputting the same information as in the first embodiment described above, specifying the cause of failure by the control unit 2, and determining the recovery procedure, the related abnormality occurrence unit extracting unit 17 reveals this time for the corresponding cause. For example, it is predicted that a failure will spread to a board of the same type in this plant equipment used other than the place where the failure has occurred, and a potential abnormality occurrence part is extracted and output to the display unit 11.

  In the fourth embodiment, since the related part that is expected to spread after specifying the cause of the manifested failure phenomenon is extracted and output, in addition to the effects shown in the first embodiment, the failure is detected. In addition to being able to prevent it, there is an effect that if a failure occurs again after the start of re-operation of the plant equipment after repairing the failure, the troubleshooting can be performed in a short period of time and the cause of the failure can be ensured.

Embodiment 5 FIG.
In the fifth embodiment, as shown in FIG. 5, the control unit 2 shown in FIG. 2 of the second embodiment is provided with a related abnormality occurrence part extracting unit 17, and the rest is shown in the second embodiment. The configuration is the same as in FIG.
The function and operation of the related abnormality occurrence unit extraction unit 17 are the same as those in the fourth embodiment.
In the fifth embodiment, in addition to the effects shown in the second embodiment, the effects shown in the fourth embodiment are combined.

Embodiment 6 FIG.
In the sixth embodiment, as shown in FIG. 6, the control unit 2 shown in FIG. 3 of the third embodiment is provided with a related abnormality occurrence part extracting unit 17, and other than that, the third embodiment. The configuration is the same as that shown in FIG. The function and operation of the related abnormality occurrence unit extraction unit 17 are the same as those in the fourth embodiment. Further, in the sixth embodiment, in addition to the effects shown in the third embodiment, the effects shown in the fourth embodiment are combined.

Embodiment 7 FIG.
In the seventh embodiment, as shown in FIG. 7, the manufacturer inventory check function unit 18 is provided in the control unit 2 shown in FIG. 1 of the first embodiment, and the rest is the same as in the first embodiment. It is the composition.

Next, the operation will be described.
The manufacturer inventory check function unit 18 checks whether the defective part is in the manufacturer's stock (stock) after the cause of the failure has been identified. A replenishment request form requesting replenishment of replacement parts is output. If necessary, follow up to the completion of the replenishment allocation process.

  In such a seventh embodiment, in addition to the same effects as those shown in the first embodiment, when the defective replacement product is out of the manufacturer's inventory, the manufacturer is immediately requested for replenishment. Combined with the effect that can be performed quickly.

Embodiment 8 FIG.
In the eighth embodiment, as shown in FIG. 8, the manufacturer inventory check function unit 18 is provided in the control unit 2 shown in FIG. 2 of the second embodiment, and the other parts are the same as those in the second embodiment. It is the composition. The function and operation of the manufacturer stock confirmation function unit 18 are the same as those in the seventh embodiment. Further, in the eighth embodiment, in addition to the effects shown in the second embodiment, the additional effects shown in the seventh embodiment are combined.

Embodiment 9 FIG.
In the ninth embodiment, as shown in FIG. 9, the control unit 2 shown in FIG. 3 of the third embodiment is provided with a manufacturer inventory check function unit 18, and the rest is the same as in the third embodiment. It is the same composition. The function and operation of the manufacturer stock confirmation function unit 18 are the same as those in the seventh embodiment. Further, in the eighth embodiment, in addition to the effects shown in the third embodiment, the additional effects shown in the seventh embodiment are combined.

Embodiment 10 FIG.
In the tenth embodiment, as shown in FIG. 10, the control unit 2 shown in FIG. 1 shown in the first embodiment is provided with a customer inventory confirmation function unit 19 for replacement parts. 1 is the same configuration.

  Next, the operation will be described. The customer inventory check function unit 19 for replacement parts confirms whether or not the defective part is in stock in the customer who manages the plant after the cause of the failure is specified. Is output. If necessary, follow up to the completion of the parts replacement process.

  In the tenth embodiment, in addition to the same effects as those shown in the first embodiment, when the defective replacement product is in stock in the manufacturer, the component replacement instruction can be immediately executed, and the failure response is quick. Combined with the effect of being able to.

Embodiment 11 FIG.
In the eleventh embodiment, as shown in FIG. 11, the customer inventory check function unit 19 is provided in the control unit 2 shown in FIG. 2 of the second embodiment. It is the same composition. The functions and operations of the customer stock confirmation function unit 19 are the same as those in the tenth embodiment. Further, in the eleventh embodiment, in addition to the effects shown in the second embodiment, the additional effects shown in the tenth embodiment are combined.

Embodiment 12 FIG.
As shown in FIG. 12, the twelfth embodiment is the same as the second embodiment except that the control unit 2 shown in FIG. 3 of the third embodiment is provided with a customer inventory confirmation function unit 19. It is the composition. The functions and operations of the customer stock confirmation function unit 19 are the same as those in the tenth embodiment. Further, in the twelfth embodiment, in addition to the effects shown in the third embodiment, the additional effects shown in the tenth embodiment are combined.

Embodiment 13 FIG.
In the thirteenth embodiment, as shown in FIG. 13, the control unit 2 shown in FIG. 7 of the seventh embodiment is provided with a related abnormality occurrence unit extracting unit 17. It is the same composition. Since the function and operation of the related abnormality occurrence unit extraction unit 17 have been described above, a description thereof will be omitted.

  In the thirteenth embodiment, in addition to the effects shown in the seventh embodiment, the effects shown in the fourth embodiment are combined.

Embodiment 14 FIG.
In the fourteenth embodiment, as shown in FIG. 14, the control unit 2 shown in FIG. 8 of the eighth embodiment is provided with a related abnormality occurrence part extracting unit 17, and the rest are the same as in the eighth embodiment. It is the same composition.
In the fourteenth embodiment, the effects shown in the fifth embodiment are combined with the effects shown in the eighth embodiment.

Embodiment 15 FIG.
In the fifteenth embodiment, as shown in FIG. 15, the control unit 2 shown in FIG. 9 of the ninth embodiment is provided with a related abnormality occurrence part extracting unit 17, and the rest are the same as in the ninth embodiment. It is the same composition.
In the fifteenth embodiment, in addition to the effects shown in the ninth embodiment, the effects shown in the sixth embodiment are combined.

Embodiment 16 FIG.
In the sixteenth embodiment, as shown in FIG. 16, the control unit 2 shown in FIG. 10 of the tenth embodiment is provided with a related abnormality occurrence unit extracting unit 17, and the rest are the same as in the tenth embodiment. It is the same composition.

  In the sixteenth embodiment, in addition to the effects shown in the tenth embodiment, the effects shown in the fourth embodiment are combined.

Embodiment 17. FIG.
In the seventeenth embodiment, as shown in FIG. 17, the control unit 2 shown in FIG. 11 of the eleventh embodiment is provided with a related abnormality occurrence part extracting unit 17, and the other parts are the same as in the eleventh embodiment. It is the same composition. In the seventeenth embodiment, in addition to the effects shown in the eleventh embodiment, the effects shown in the fifth embodiment are combined.

Embodiment 18 FIG.
In the eighteenth embodiment, as shown in FIG. 18, the related abnormality occurrence part extracting unit 17 is provided in the control unit 2 shown in FIG. 12 of the twelfth embodiment.
In the eighteenth embodiment, in addition to the effects shown in the twelfth embodiment, the effects shown in the sixth embodiment are combined.

  As described above, when the first to eighteenth embodiments of the present invention are applied to a plant facility failure maintenance support apparatus, when a failure occurs in the plant facility, information can be quickly input, and the cause of the failure can be identified and restored. Procedures can be decided promptly and spills can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration block diagram of a failure handling support maintenance apparatus according to Embodiment 1 of the present invention. It is a block diagram of the configuration of the failure handling support maintenance apparatus according to Embodiment 2 of the present invention. It is a block diagram of the configuration of the failure handling support maintenance apparatus according to Embodiment 3 of the present invention. It is a block diagram of the configuration of the failure handling support maintenance apparatus according to Embodiment 4 of the present invention. It is a block diagram of the configuration of the failure handling support maintenance apparatus according to Embodiment 5 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 6 of the present invention. It is a block diagram of the configuration of the failure handling support maintenance apparatus according to Embodiment 7 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 8 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 9 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 10 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 11 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 12 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 13 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 14 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 15 of the present invention. It is a block diagram of the configuration of the failure handling support maintenance apparatus according to Embodiment 16 of the present invention. It is a block diagram of the configuration of the failure handling support maintenance apparatus according to Embodiment 17 of the present invention. It is a block diagram of the configuration of a failure handling support maintenance apparatus according to Embodiment 18 of the present invention.

Explanation of symbols

1 input part, 2 control part, 3 narrowing down part, 4, 4a maintenance conclusion customer authentication part,
5 comparison judgment part, 6 question content setting part, 7 restoration procedure database,
8 case database, 9 failure analysis database, 12 personal portable information terminal,
13 Voice-to-text converter, 15 Telephone line with maintenance contract
17 related abnormality occurrence part extraction part, 18 manufacturer inventory confirmation function part,
19 Customer inventory confirmation function unit, 100 failure support maintenance support device.

Claims (8)

A failure support maintenance support device in the event of a plant facility failure, wherein the failure support maintenance support device includes an input unit, a control unit, and a narrowing unit, and the input unit includes a maintenance conclusion customer authentication unit Is provided, and the failure information from the personal portable information terminal device issued by the plant facility manager is input via the maintenance conclusion customer authentication unit, and the control unit includes a comparison determination unit and a question content setting unit. When the failure information is input from the input unit, the comparison determination unit identifies the cause of the failure and performs the recovery procedure by comparison with the recovery procedure database, failure analysis database, and case database provided in the control unit. The cause of the failure is specified by the question content setting unit asking the plant facility manager a plurality of questions regarding the failure information. Failure countermeasure maintenance support system, wherein the narrowing portion is intended to be done by performing narrowing. A failure support maintenance support device when a plant facility failure occurs, wherein the failure support maintenance support device includes an input unit, a control unit, and a narrowing unit, and the input unit includes a speech text conversion unit. Fault information from a telephone line with a maintenance contract concluded by the plant facility manager is input via the voice text conversion unit, and the control unit includes a comparison determination unit and a question content setting unit. When the failure determination information is input from the input unit, the comparison determination unit identifies the cause of the failure and determines the recovery procedure by comparison with the recovery procedure database, failure analysis database, and case database provided in the control unit. The cause of the failure is specified by the question content setting unit asking the plant facility administrator a plurality of questions regarding the failure information. , Failure countermeasure maintenance support system, wherein the narrowing portion is intended to be done by performing narrowing. A failure-response maintenance support device at the time of occurrence of a plant facility failure, the failure-response maintenance support device includes an input unit, a control unit, and a narrowing unit, and the input unit includes a voice text conversion unit, A maintenance conclusion customer authentication unit is provided, and the failure information issued by the plant facility manager is input through an authentication function using an authentication ID number provided in the voice text conversion unit and the maintenance conclusion customer authentication unit, The control unit includes a comparison determination unit and a question content setting unit. When the comparison determination unit inputs failure information from the input unit, a recovery procedure database, failure analysis database, and case database provided in the control unit The cause of failure is determined by comparison and determination, and the recovery procedure is determined. The cause of failure is specified by the question content setting unit in the plant equipment management. Failure countermeasure maintenance support apparatus performs a plurality of questions about the failure information, the narrowing portion is characterized in that which is done by performing a narrowing against. A failure support maintenance support device in the event of a plant facility failure, wherein the failure support maintenance support device includes an input unit, a control unit, and a narrowing unit, and the input unit includes a maintenance conclusion customer authentication unit Is provided, and the failure information from the personal portable information terminal device issued by the plant facility manager is input via the maintenance conclusion customer authentication unit, and the control unit includes a comparison determination unit and a question content setting unit. And a related abnormality occurrence unit extraction unit, and when the comparison determination unit inputs failure information from the input unit, by comparison determination with a recovery procedure database, failure analysis database, and case database provided in the control unit The cause of failure is determined and the recovery procedure is determined. The cause of failure is identified by the question content setting unit with respect to the failure information for the plant equipment manager. In addition to the above-mentioned question, the narrowing-down part is made by narrowing down, and further, due to the specified cause, the part that is expected to spill over to other parts of the plant equipment and cause the failure A failure-supporting maintenance support device, characterized in that an abnormality occurrence unit extraction unit extracts and outputs. A failure support maintenance support device when a plant facility failure occurs, wherein the failure support maintenance support device includes an input unit, a control unit, and a narrowing unit, and the input unit includes a speech text conversion unit. Fault information from a telephone line that has been established and has been concluded by the plant facility manager is entered through the voice text conversion unit, and the control unit is associated with a comparison determination unit and a question content setting unit. An abnormality occurrence site extraction unit, and when the comparison determination unit inputs failure information from the input unit, the cause of failure is determined by comparison with a recovery procedure database, failure analysis database, and case database provided in the control unit. The determination of the cause of the failure is performed by the question content setting unit regarding the failure information to the plant equipment manager. While performing a plurality of questions, the narrowing down part is made by narrowing down, and further, due to the identified cause, the part that is expected to spread to other parts of the plant equipment and to cause a failure, A failure-supporting maintenance support apparatus, characterized in that a related abnormality occurrence part extracting unit extracts and outputs. A failure-response maintenance support device at the time of occurrence of a plant facility failure, the failure-response maintenance support device includes an input unit, a control unit, and a narrowing unit, and the input unit includes a voice text conversion unit, A maintenance conclusion customer authentication unit is provided, and failure information from the personal portable information terminal device issued by the plant facility manager is transmitted through an authentication function using an authentication ID number provided in the voice text conversion unit and the maintenance conclusion customer authentication unit. The control unit is provided with a comparison determination unit, a question content setting unit, and a related abnormality occurrence site extraction unit. When the comparison determination unit inputs failure information from the input unit, the control unit The cause of failure and the determination of the recovery procedure are determined by comparison with the provided recovery procedure database, failure analysis database, and case database. The question content setting unit makes a plurality of questions regarding the failure information to the plant facility manager, and the narrowing unit narrows down, and further, depending on the identified cause The failure-corresponding maintenance support apparatus, wherein the related abnormality occurrence part extraction unit extracts and outputs a part that is predicted to cause a failure by spreading to other parts of the plant facility. In addition, the control unit is further provided with a manufacturer inventory confirmation function unit for replacement parts, and the manufacturer inventory confirmation function unit is a manufacturer whose parts to be replaced have delivered the plant after the cause of the failure is specified. 7. The system according to claim 1, further comprising checking whether or not the in-stock inventory is held and outputting a replacement parts replenishment request document to the manufacturer for the plant equipment manager when there is no inventory. The failure support maintenance support apparatus according to any one of the preceding claims. In addition, the control unit is further provided with a customer inventory confirmation function unit for replacement parts, and the customer inventory confirmation function unit is configured so that after the cause of the failure is identified, the parts to be replaced are managed by the customer who manages the plant. 7. The component replacement instruction is output to the plant equipment manager when inventory is present and to the manager of the plant equipment. Failure support maintenance support device.

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