KR20190094855A - Preventive maintenance job selection system, method considering failure prevention effect and storing medium of program executing preventive maintenance job selection - Google Patents

Abstract

The present invention relates to a system, method, and program for selecting a preventive maintenance job considering a failure prevention effect. By priory applying a job capable of efficiently performing preventive maintenance of equipment according to the priority, the system, method, and program may perform failure prevention for the equipment, thereby improving the reliability of the equipment.

Description

Preventive maintenance job selection system, method considering failure prevention effect and storing medium of program executing preventive maintenance job selection}

The present invention relates to a recording medium recording a preventive maintenance job selection system, a method and a program for selecting a preventive maintenance job in consideration of a failure prevention effect. More specifically, by selecting a preventive maintenance job, the failure prevention performed at a nuclear power plant is effectively performed. It is about the selection of preventive maintenance tasks that can be carried out.

Proper maintenance of facilities is essential to maintain the stability and reliability of nuclear power plants. Maintenance of these facilities can be divided into failure maintenance and preventive maintenance.

Here, failure maintenance refers to all unplanned maintenance activities performed to recover to a defined state after a failure of equipment and equipment. Thus, troubleshooting includes activities such as fault identification, separation and disassembly of fault parts, replacement and repair, reassembly, inspection and warranty.

In addition, preventive maintenance is a preliminary measure to prevent aging and deterioration of the facility in order to maintain the performance of the facility. For this purpose, the facility is regularly scheduled for inspection along with daily maintenance activities such as lubrication, cleaning, adjustment, inspection and replacement. It refers to maintenance activities, regular repairs, and regular replacements. This preventive maintenance is applied to machinery or equipment that has a high loss due to failure. Preventive maintenance is an essential maintenance activity that should be carried out in terms of securing stability and reliability of nuclear power plants.

Therefore, the importance of facilities is determined according to the degree that affects the stability of nuclear power plant according to the occurrence of failure, and the important facilities are managed by performing preventive maintenance before the occurrence of failure. This is the situation.

Conventionally, in selecting a task for performing preventive maintenance on important facilities selected as preventive maintenance among nuclear power plant facilities, it was performed based on the maintenance experience of the operator performing the preventive maintenance and the history of equipment failure. .

However, since there are many cases where a failure occurs in a facility, it is difficult to apply the job of performing preventive maintenance on failures due to the limitation of available resources such as maintenance technology, manpower and materials. It is limited.

As a result, if the task of performing preventive maintenance can be effectively selected, it is possible to maintain the required level of equipment reliability with only limited resources and skills, and thus to provide appropriate failure prevention effects.

Due to these effects, various methods of performing job selection on preventive maintenance have been studied in order to maintain facility reliability in limited manpower and resources.

Republic of Korea Patent No. 10-1282244

The present invention is to solve the problems of the prior art as described above, classify the tasks to perform the preventive maintenance, and apply the priority to the tasks that have a high failure prevention effect when performing preventive maintenance among the classified tasks The purpose of this is to prevent the occurrence of breakdown of equipment and increase the reliability of equipment by applying preventive maintenance tasks.

Preventive maintenance job selection system according to the present invention for achieving the above object in the preventive maintenance of the facility in a nuclear power plant, information collection unit for collecting the facility information and maintenance information for the facility; A classification unit for selecting a target to which preventive maintenance is applied through the importance information using the facility information and classifying a plurality of jobs for performing the preventive maintenance; By analyzing the failure history by investigating the failure history of the facility, the analysis of selecting the priority of the plurality of jobs based on the effect that occurs when the preventive maintenance according to the method of the preventive maintenance for the facility part; And an application unit for finally applying the plurality of tasks selected to perform the preventive maintenance according to the priority.

Here, the facility information may include the facility type, facility class, manufacturer, model number, installation location, operating environment and operation frequency of the facility.

In addition, the maintenance information is a regulatory requirement including instructions on the procedure for performing the preventive maintenance to the facility or group of equipment types, descriptions and precautions for preventive maintenance, and a cycle for performing the preventive maintenance. It may include.

The apparatus may further include a storage unit configured to store information on a probability of increasing failure of the facility generated when the preventive maintenance is not performed and a probability of improving the reliability of the facility of the facility when performing the preventive maintenance.

In addition, when the preventive maintenance is not performed, the applicator increases the probability of failure of the facility by 50% or applies the job of which the failure prevention effect on the facility is rated as high as a priority and does not perform the preventive maintenance. If the probability of failure for the facility increases by 25%, or if the preventive maintenance is additionally performed, the job of improving the reliability of the facility is applied as the second priority.If the preventive maintenance is not performed, the probability of failure for the facility is applied. This job is increased to less than 25% or the failure prevention effect for the facility is characterized in that the third priority to apply the job.

In addition, the tasks for performing the preventive maintenance is characterized in that it is classified into a state monitoring task for performing predictive maintenance and performance monitoring, a maintenance task assigned a period and an AR (As Required (as required)).

In addition, the AR job is performed in parallel with the condition monitoring job, characterized in that to perform maintenance when there is a symptom of the performance of the condition monitoring, the performance of the equipment performed by the condition monitoring job.

In addition, the importance level is not included in the critical grade, in which the failure of the facility is closely related to the safety of the reactor and the operation of the power plant, the critical grade, but the failure of the facility is indirect to the safety of the plant, reliability and industrial safety. It is characterized in that it is classified as a nominal grade that may affect, and a no impact grade that cannot directly or indirectly affect plant safety, reliability, and industrial safety even if a failure occurs other than the above-mentioned critical grade and the average grade. .

On the other hand, the preventive maintenance job selection method according to the present invention for achieving the above object comprises the steps of collecting the facility information and maintenance information for the facility in performing a preventive maintenance for the facility in the nuclear power plant; Selecting targets to which preventive maintenance is applied based on the importance information using the facility information and classifying a plurality of tasks for performing the preventive maintenance; Selecting the priorities of the plurality of jobs based on the effects that occur when the preventive maintenance is performed according to the preventive maintenance method for the facility by analyzing the failure history by investigating the failure history of the facility. ; And finally applying the plurality of tasks selected to perform the preventive maintenance according to the priority.

In addition, the facility information may include the facility type, facility class, manufacturer, model number, installation location, operating environment and operating frequency of the facility.

On the other hand, the recording medium recording a program for selecting a preventive maintenance job according to the present invention for achieving the above object in the preventive maintenance of the facility in the nuclear power plant, collects the facility information and maintenance information for the facility, By selecting the target to apply the preventive maintenance through the importance information by using the facility information and classifies a plurality of tasks for performing the preventive maintenance, by analyzing the failure history by examining the failure history for the facility, The priorities of the plurality of jobs are selected based on the effects that occur when the preventive maintenance is performed according to the preventive maintenance method for the facility, and the priority is given to the plurality of jobs selected to perform the preventive maintenance. It is characterized by the final application according to the ranking.

Preventive maintenance job selection system, method and a recording medium recording a program for selecting a preventive maintenance job according to the present invention has the following effects.

First, preventive maintenance can be carried out efficiently within limited manpower and resources. Conventionally, in selecting a job for preventive maintenance of a facility at a nuclear power plant, it was based on the experience of performing the facility maintenance and the failure history of the facility. However, the selection of tasks for preventive maintenance based on these maintenance experiences is inadequate for effective countermeasures as the information on the types of failures and the causes of failures are updated due to technological developments. These types of failures and causes of failure are very diverse as time passes, and even if measures for preventing failure are prepared by analyzing the causes of failure, there are limitations in applying the preventive maintenance job due to the limitation of technology and resources. Accordingly, the preventive maintenance task selection according to the present invention by selecting the most effective preventive maintenance tasks in order to prevent failures and applying them according to the priorities, the failure of the facilities of nuclear power plants efficiently within a given manpower, technology and resources Prevention can be performed.

Second, facility reliability can be increased. Preventive maintenance job selection according to the present invention can adjust the priority in selecting a job for preventive maintenance by reflecting the analysis of the cause of failure for the newly identified failure type through the case of failure type, and accordingly As a result, the reliability of the equipment can be increased by updating the analysis of failure types and causes of failure and managing the equipment through preventive maintenance.

1 is a view schematically showing a preventive maintenance job selection system in consideration of the failure prevention effect according to an embodiment of the present invention.
Figure 2 is a block diagram of a preventive maintenance job selection system in consideration of the failure prevention effect according to an embodiment of the present invention.
Figure 3 is a flow chart of the preventive maintenance job selection method in consideration of the failure prevention effect according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating an example of classifying duties to be applied for each facility according to an embodiment of the present invention.
FIG. 5 is a diagram exemplarily selecting priority of a job applied for each facility according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described. However, some components irrelevant to the gist of the present invention will be omitted or compressed, but the omitted elements are not necessarily required in the present invention, and may be combined and used by those skilled in the art. Can be.

<Configuration of Preventive Maintenance Job Selection System>

1 is a view schematically showing a preventive maintenance job selection system, equipment, and administrator terminal considering the failure prevention effect according to an embodiment of the present invention.

As shown in FIG. 1, the preventive maintenance job selection system 100 considering the failure prevention effect according to an embodiment of the present invention is connected to a facility 300 and a manager terminal 200 installed in a nuclear power plant. To select the jobs that can perform preventive maintenance on the facility 300, can be applied according to the priority.

Figure 2 is a block diagram of a preventive maintenance job selection system in consideration of the failure prevention effect according to an embodiment of the present invention.

As shown in FIG. 2, the preventive maintenance job selection system 100 considering the failure prevention effect according to an embodiment of the present invention includes an information collecting unit 110, a classification unit 120, an analysis unit 130, and an application. The unit 140 includes a storage unit 150 and a control unit 160.

The information collecting unit 110 is configured to collect facility information about all the facilities 300 installed in the nuclear power plant. The facility information includes information on the facility type of the corresponding facility 300 and the facility 300. Information on the manufacturer, information on the class of the facility classified the various equipment (300), unique equipment number and model number for managing the equipment (300), the installation in which the equipment (300) is installed in the nuclear power plant Information on the location and function location, information on the operating environment, including ambient temperature, pressure, vibration, humidity, irradiation dose, corrosive conditions, erosive conditions, etc. It may include information on the frequency with which 300 operates or operates, importance information of each facility, and structure type.

Maintenance information may also include maintenance procedures and regulatory requirements. These maintenance procedures may include instructions, explanations, and precautions on preventive maintenance for the facility 300 or group of facility types that perform preventive maintenance, and the regulatory requirements may include preventive maintenance. Cycles may be included.

The classification unit 120 is configured to classify tasks capable of performing preventive maintenance on the facility 300, and selects the facilities 300 to perform the preventive maintenance by utilizing the importance from the collected facility information, and Jobs that can perform preventive maintenance on facilities 300 are primarily classified. This classification can be done using information on equipment type, operating environment and frequency of operation.

The analysis unit 130 is configured to analyze the failure history by the type of facility or each facility 300 to analyze the cause of the failure, and how to perform preventive maintenance by referring to the maintenance procedures in order to solve the cause of the failure in advance. Accordingly, by selecting the priority of the job to perform the preventive maintenance, based on the failure prevention effect that occurs when the preventive maintenance is performed on the facility (300).

The application unit 140 is configured to finally apply the job to perform the preventive maintenance for the facility 300, the classification and the result of the classification of the job performing the preventive maintenance for the facility 300 in the classification unit 120 and maintenance Using the procedures and regulatory requirements, the analysis unit 130 finally applies the priority of a job for performing preventive maintenance.

The storage unit 150 is the facility information for the facility 300 installed in the nuclear power plant, the probability of failure increase of the facility 300 when the preventive maintenance is not performed for the facility 300 and the reliability of the facility when additionally performed. Information such as the probability of improvement is stored.

The control unit 160 is configured to control the application of the tasks to perform the preventive maintenance by selecting the priority, the information collecting unit 110 to collect the facility information and maintenance information for the facility 300, classification The unit 120 is configured to classify the tasks capable of performing preventive maintenance on the facility 300, by selecting the facilities 300 to perform the preventive maintenance by using the importance from the collected equipment information, and the corresponding equipment Perform the preventive maintenance on the facility 300 according to the method of performing the preventive maintenance by first classifying the tasks that can perform the preventive maintenance to the 300, the analysis procedure 130 by referring to the maintenance procedures. By selecting the priority of the job to perform the preventive maintenance by using the failure prevention effect that occurs when the basis, and the application unit 140 to classify the tasks to perform the preventive maintenance for the facility 300 Utilizing the procedures and maintenance and regulatory requirements and controls to finally apply the functions of the priority to perform maintenance on the analysis unit 130.

<How to choose preventive maintenance job>

Hereinafter, a method of selecting a preventive maintenance job will be described with reference to the accompanying drawings.

Figure 3 is a flow chart of the preventive maintenance job selection method in consideration of the failure prevention effect according to an embodiment of the present invention.

As shown in FIG. 3, in the preventive maintenance job selection method considering the failure prevention effect according to an embodiment of the present invention, the information collecting unit 110 collects facility information and maintenance information about the facility 300. . <S30>

Such equipment information includes information on the equipment type of the equipment 300, information on the manufacturer who manufactured the equipment 300, equipment classes that classify the various equipment 300, and unique equipment for managing the equipment 300. Equipment number and model number, information on the installation location and function location of the installation facility 300 in the nuclear power plant, ambient temperature, pressure, vibration, humidity, irradiation dose at the location where the facility 300 is installed and operated It may include information on the operating environment, including corrosive conditions, erosive conditions, frequency of operation or operation of the facility 300, importance information of each facility, and information on structure types.

Maintenance information may also include maintenance procedures and regulatory requirements. These maintenance procedures may include instructions, explanations, and precautions on preventive maintenance for the facility 300 or group of facility types that perform preventive maintenance, and the regulatory requirements may include preventive maintenance. Cycles may be included.

The facility information and maintenance information about the facility 300 may be collected by the information collection unit 110 at each facility 300, or may collect data stored in the storage unit 150.

Next, the classification unit 120 classifies a plurality of jobs that perform a preventive maintenance and select a facility to perform a preventive maintenance through the importance information of each facility using the facility information. This will be described in detail.

FIG. 4 is a diagram exemplarily illustrating a classification of jobs to be applied for each facility 300 according to an embodiment of the present invention.

As shown in FIG. 4, the functional location in the facility information indicates an association relationship for performing a function in a nuclear power plant. The system includes a system at a lower level of the power plant, and includes a main facility at a system lower level. In the lower stages, subsidiary facilities are included. The classification unit 120 assigns and displays such a function position as a code, so that the operator and the nuclear power plant manager can determine it.

In addition, the facility number in the facility information refers to a management number assigned a number in order to facilitate the management of the facility 300 in the nuclear power plant.

In addition, the equipment class is a category that groups the various equipment 300 in the nuclear power plant, classifies the equipment types by subdividing into sub-classification, sub-classification, sub-classification, and sub-classification, and assigns a code to each facility type.

In addition, the periodic strategy is an item that indicates roughly how often to prevent the maintenance of the facility 300, including the importance, operating environment, operating frequency (or operating frequency). The method of determining such a cycle strategy is to prioritize the management of nuclear power plant facilities in the operation of preventive maintenance standards, and to determine the combination of importance, frequency of operation, and operation environment in order to implement effective preventive maintenance.

Specifically, the importance level may be classified into a critical grade, a minor grade, and a no impact grade.

Here, the critical grade may be classified as being the grade of the facility 300 where the failure of the facility 300 is closely related to reactor safety and operation of the nuclear power plant.

In addition, the normal rating is not included in the critical rating, but may be classified as a rating of the installation 300, in which a failure of the installation 300 may indirectly affect the stability, reliability and industrial safety of the nuclear power plant.

Finally, unrelated grades are grades other than critical and moderate grades, which are categorized as facilities 300 that do not directly or indirectly affect the stability, reliability and industrial safety of nuclear power plants, even if the facilities 300 fail. Can be.

Next, the frequency of operation or frequency of operation may be classified into a high grade and a low grade. This frequency of operation may be classified as high when the facility 300 is continuously operated, operated twice or more a week, frequently regulated or continuously pressurized.

In addition, the operation frequency may be classified as a low grade when the facility 300 is intermittent operation, less than twice a week, intermittently adjusted or intermittently pressurized.

Next, the driving environment may be classified into a severe grade and a mild grade. This operating environment has an ambient temperature of 49 ℃ or higher and a pressure of 70kg / cm ² If abnormal or high vibration, high humidity, radiation dose of 1R / h or more, and corrosive or erosive conditions are applicable, they may be classified as severe.

In addition, the operating environment, the ambient temperature is less than 49 ℃ Celsius, pressure 70kg / cm ² It may be classified as weak if it is less than or under low vibration, low humidity, radiation dose below 1R / h and not corrosive or erosive.

As a result, when combining the first letter of importance, frequency of operation, and environmental level, CHS is Critical, Critical, High, High, High, Severe, and MHS is Moderate. The class is Minor, the operating frequency is High, the class is High, and the operating environment can be displayed as the severe class, Severe.

As such, the periodic strategies can be classified into eight categories: CHS, MHS, CLS, CHM, CLM, MHS, MLS, MHM, MLM.

On the other hand, the specific criteria for classifying the grades of importance, frequency of operation and operating environment as above is just one example, and it is clear that the criteria applied to each facility for each nuclear power plant may be different from each other.

In addition, the manufacturer is an item displaying the company that produced the facility (300).

In addition, the model number is an item displaying a serial number assigned by the manufacturer to distinguish the facilities 300 when manufacturing the facility (300).

In addition, the structural type is an item for easily identifying the structural form of the facility 300 by assigning a number to the structure of the various facilities (300).

In the preventive maintenance standard, a simple standard in which preventive maintenance is performed, the standard job name for performing preventive maintenance may be displayed, and a cycle for performing preventive maintenance may be displayed.

Here, the standard job name is a portion displaying various jobs for performing preventive maintenance for the facility (300). Types of duties may be classified into a job to monitor the status of the facility 300, a job to perform a preventive maintenance periodically by specifying a cycle, an AR (As required) job to perform a preventive maintenance, if necessary, In each category, specific job names may be listed.

In addition, the cycle displays the preventive maintenance cycle of the various tasks to perform the preventive maintenance for the facility (300). This cycle may be performed as necessary in the state of the facility 300, preventive maintenance, or a cycle may be designated on a monthly or annual basis to perform preventive maintenance.

Current preventive maintenance is the part that shows the various items that are applied to preventive maintenance in the current state. Such current preventive maintenance may include whether the preventive maintenance is selected, the specific job name for performing the preventive maintenance, the preventive maintenance cycle, the job list, and the maintenance items.

Finally, whether it is applied or not is an item that indicates whether preventive maintenance has been applied.

As such, the preventive maintenance job classification illustrated in FIG. 4 may be generated as a file and displayed on the display of the manager terminal 200 used by the manager of the nuclear power plant.

After classifying the job performing the preventive maintenance in the classification unit 120 as described above, by analyzing the failure history for the facility 300 in the analysis unit 130, by analyzing the cause of the failure, prevention of the facility 300 The priority of the classified jobs is selected based on the effects occurring when the maintenance is performed. <S32> First, when analyzing the failure history of the facility 300 in the analysis unit 130, the analysis unit 130 corresponds to the corresponding priority. In the facility 300, the distribution of failure cases may be examined, or the distribution of failure cases of the facility 300 stored in the storage unit 150 may be investigated. Accordingly, the analysis unit 130 may analyze the causes of the failure of the facility 300 to sequentially classify the causes of the failure.

Thereafter, referring to the maintenance procedure of the facility 300, a preventive maintenance method that can solve the corresponding failure cause according to each failure cause can be matched with the failure cause.

After matching the cause of failure with the preventive maintenance method, the priority of the task to perform preventive maintenance is selected based on the failure prevention effect that occurs when the worker performs the preventive maintenance.

Specifically, among the tasks presented in the preventive maintenance criteria in the classification unit 120 when the preventive maintenance is performed, the effect of preventing the failure of the facility 300 and improving the reliability of the facility occurs differently. Therefore, the storage unit 150 stores the probability of failure increase occurring when the preventive maintenance is not performed and the probability that the reliability of the facility is improved when the preventive maintenance is additionally performed.

As a result, the analysis unit 130 prioritizes the job whose failure probability is increased by 50% or when the failure prevention effect is high when the preventive maintenance is not performed first, and the failure when the preventive maintenance is not performed. Priority is given to jobs with a 25% increase in probability and jobs that can improve facility reliability when performing preventive maintenance, and failure probability increases to less than 25% if preventive maintenance is not performed. Priority will be given to the 3 priority jobs whose failure prevention effect is evaluated as Low.

After selecting the priority of the job to perform the preventive maintenance in this way it can be shown in the manager terminal 200 used by the manager of the nuclear power plant. This will be described in detail with reference to FIG. 5.

FIG. 5 is a diagram exemplarily selecting priorities of tasks applied to each facility 300 according to an embodiment of the present invention.

As shown in FIG. 5, the analysis unit 130 displays the facility type code for performing preventive maintenance, and a description item for the facility 300 for performing preventive maintenance in detail, and in the standard job list. List the jobs that can perform preventive maintenance on the facility 300, and the failure prevention effect items include a 50% increase in the probability of failure when not performed for the jobs listed in the standard job list, and increase the reliability of the facility. If the job listed in the standard job list cannot perform the job listed in the standard job list, the job can be replaced with another job having a similar effect to indicate a job capable of performing preventive maintenance on the facility 300. Can be.

Here, AR (As required) means preventive maintenance performed as necessary as described above. This AR job is performed in parallel with the condition monitoring job, and performs maintenance when there is a symptom of poor performance as a result of condition monitoring on the facility 300 which the condition monitoring job performs.

Finally, the application unit 140 finally applies a plurality of jobs selected in order to perform preventive maintenance according to the priorities. <S33> In order to finally apply the job, the job is referred to the maintenance procedures and regulatory requirements. It is carried out through the step of adjusting.

In detail, when a preventive maintenance is performed on a specific facility 300, if the first, second, and third jobs can be applied to the first place, it may be sufficient to achieve the effect of preventing failure by applying all of them. desirable.

That is, if the failure prevention effect is not sufficient by performing the first priority job so that the failure frequency of the facility 300 increases than the expected or target, the second or third priority job is additionally applied to the facility 300. By performing the preventive maintenance, it is to reduce the probability of failure frequency of the facility 300, to ensure the reliability of the facility.

On the other hand, preventive maintenance should be performed by applying the job selected as the first priority, but the workers who perform the preventive maintenance have various tasks in performing preventive maintenance, including the lack of manpower to perform preventive maintenance by performing other tasks. Constraints may arise.

Therefore, if preventive maintenance is not performed in the job selected as the 1st priority among the tasks for performing preventive maintenance, the task of performing preventive maintenance in the 2nd or 3rd priority job will be coordinated. Can deliver the order to the workers performing the task.

Due to such a series of processes, the present invention classifies the tasks capable of performing preventive maintenance in a specific facility 300 within a limited manpower and resources, and among the classified tasks, the most prominent effect of the preventive maintenance occurs. By selecting these priorities, the preventive maintenance of the facility 300 installed in the nuclear power plant can be efficiently performed.

That is, the preventive maintenance job selection according to the present invention by classifying the most effective preventive maintenance job in order to prevent the occurrence of failure in the facility 300 and applying the corresponding jobs according to the priority, nuclear power plant within a given technology and resources The failure prevention of the facility 300 can be efficiently performed.

In addition, equipment reliability can be increased. Preventive maintenance job selection according to the present invention can adjust the priority in selecting a job for preventive maintenance by reflecting the analysis of the cause of the failure for the newly identified failure type through the case of the failure type, and accordingly By updating the failure type and cause analysis to prevent the maintenance facility 300 to increase the reliability of the facility.

Preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art will be able to make various modifications, changes and additions within the spirit and scope of the present invention. And additions should be considered to be within the scope of the claims of the present invention.

100: preventive maintenance job selection system
110: information collector
120: classification unit
130: analysis unit
140: application
150: storage unit
160: control unit
200: manager terminal
300 equipment

Claims (10)

In the system for selecting preventive maintenance tasks for facilities in nuclear power plants,
An information collection unit collecting facility information and maintenance information about the facility;
A classification unit for selecting a target to which preventive maintenance is applied through the importance information using the facility information and classifying a plurality of jobs for performing the preventive maintenance;
By analyzing the failure history by investigating the failure history of the facility, the analysis of selecting the priority of the plurality of jobs based on the effect that occurs when the preventive maintenance according to the method of the preventive maintenance for the facility part; And
And an application unit for finally applying the plurality of tasks selected to perform the preventive maintenance according to the priority.
The method of claim 1,
The facility information preventive maintenance job selection system considering the failure prevention effect, characterized in that the facility type, facility class, manufacturer, model number, installation location, importance, operating environment and operating frequency of the facility.
The method of claim 1,
The maintenance information includes a maintenance procedure document including instructions, explanations and precautions for preventive maintenance, and the like regarding the procedure for performing the preventive maintenance to the facility or the equipment type group.
Preventive maintenance job selection system considering the failure prevention effect, characterized in that it comprises a regulatory requirement including a cycle for performing the preventive maintenance.
The method of claim 1,
And a storage unit for storing information about a probability of increasing the failure of the equipment generated when the preventive maintenance is not performed and additionally, a probability of improving the reliability of the equipment when the preventive maintenance is performed. Preventive maintenance job selection system considering the prevention effect.
The method of claim 4, wherein
The application unit applies a job that increases the probability of failure for the equipment by 50% or the failure prevention effect for the equipment is high when the preventive maintenance is not performed first,
If the preventive maintenance is not performed, the probability of failure of the facility is increased by 25%, or when the preventive maintenance is additionally performed, the job of improving the reliability of the facility is applied as the second priority.
When the preventive maintenance is not performed, the failure probability of the facility is increased to less than 25% or the failure prevention effect of the facility is evaluated in the third priority. Maintenance Job Selection System.
The method of claim 4, wherein
The tasks that perform the preventive maintenance are classified into status monitoring tasks for performing predictive maintenance and performance monitoring, maintenance tasks for which cycles are designated, and AR (As Required) tasks. Maintenance Job Selection System.
The method of claim 6,
The AR job is performed in parallel with the condition monitoring job, and preventive maintenance considering failure prevention effect is characterized in that maintenance is performed when there is a symptom of performance degradation as a result of condition monitoring for the facility performed by the condition monitoring job. Job Selection System.
The method of claim 1,
The criticality is the critical grade where the failure of the facility is closely related to reactor safety and power plant operation,
Although not included in the critical ratings, minor ratings where failure of the facility may indirectly affect plant safety and reliability, industrial safety, and
Preventive maintenance job selection system in consideration of the failure prevention effect, characterized in that the classification as a non-impact (No impact) class that can not directly or indirectly affect the safety, reliability and industrial safety even if the failure in addition to the critical and normal ratings.
In selecting a preventive maintenance job for a facility in a nuclear power plant,
Collecting facility information and maintenance information for the facility;
Selecting targets to which preventive maintenance is applied based on the importance information using the facility information and classifying a plurality of tasks for performing the preventive maintenance;
Selecting the priorities of the plurality of jobs based on the effects that occur when the preventive maintenance is performed according to the preventive maintenance method for the facility by analyzing the failure history by investigating the failure history of the facility. ; And
And finally applying the plurality of jobs selected to perform the preventive maintenance in accordance with the priority order.
A computer-readable recording medium that, when executed by a preventive maintenance job selection system at a nuclear power plant, performs a preventive maintenance job selection for a facility.
Collecting facility information and maintenance information for the facility;
Selecting targets to which preventive maintenance is applied based on the importance information using the facility information and classifying a plurality of tasks for performing the preventive maintenance;
Selecting the priorities of the plurality of jobs based on the effects that occur when the preventive maintenance is performed according to the preventive maintenance method for the facility by analyzing the failure history by investigating the failure history of the facility. ; And
And finally applying the plurality of tasks selected to perform the preventive maintenance according to the priority. A computer-readable recording medium for executing a preventive maintenance task selection program in consideration of a failure preventing effect.

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