JP2003307469A - Supporting apparatus for deterioration evaluation of device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supporting apparatus for a deterioration evaluation of a device by which the deterioration evaluation of a plant device is executed efficiently without being affected by a technical level of an evaluation operator and whose maintainability of an evaluation result is superior. <P>SOLUTION: When a deterioration-event extraction part 11 executes the deterioration evaluation of the plant device, it extracts a deterioration event candidate on the basis of data on a component constituting the plant device and data on an aged deterioration, and it extracts a deterioration event requiring an evaluation from the deterioration event candidate on the basis of data on a maintenance hysteresis. A deterioration-event evaluation part 17 creates and outputs evaluation data on the deterioration event extracted in the extraction part 11, and a maintenance-plan decision part 19 outputs a maintenance plan as a maintenance map on the basis of the evaluation data by the evaluation part 17 and on the basis of a designated creation condition. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an equipment deterioration evaluation support device for supporting plant maintenance plan formulation.

[0002]

2. Description of the Related Art For example, in a large-scale plant such as a chemical industrial plant or a power generation plant, many equipments are installed, and in designing these equipments, the deterioration phenomenon of the equipments is taken into consideration in the equipments. Is designed.
That is, a deterioration event that is assumed in advance is extracted from the types of constituent materials of facility equipment and the usage environment and evaluated to confirm that the design of materials and structures is appropriate.

For example, when the thermal cycle during the operating period can be specified as in the case of low cycle thermal fatigue, a quantitative evaluation is carried out to determine the scheduled period of use of the equipment, and if necessary, the equipment and the equipment are periodically used. Parts are being replaced. Also,
Regular inspections are carried out at important points in terms of function and strength, and if necessary, equipment and parts are replaced. Through such conservation activities, the soundness of the plant is ensured.

On the other hand, there are cases in which a deterioration event that cannot be anticipated at the time of design occurs, and due to changes in surrounding conditions, the operation of the plant may be considered beyond the initial scheduled operation period. In such a case, deterioration that was not expected at the time of design will occur, and the equipment will need to be updated a number of times. That is, in such a case,
In terms of asset management, it is required to consider the effects of deterioration events and plan for the necessary renewal of equipment in the long term in the future.

Conventionally, a veteran engineer who has experience in designing equipment, mechanism of deterioration event, and evaluation work has been used for these studies. Moreover, since it is a huge number to evaluate all the component equipment of the plant, a skilled engineer empirically selects the equipment and components to be evaluated and evaluates the deterioration event.

[0006]

However, since these operations are based on the experience of individual skilled engineers, there are variations in the selection of equipment to be evaluated and the extraction of secular change events, resulting in deterioration. There was a possibility that the failure evaluation due to the event would be omitted. Further, since the evaluation work results are enormous, it takes a lot of time to store, manage and correct the evaluation work results.

An object of the present invention is to provide a device deterioration evaluation support device which enables efficient evaluation of plant device deterioration without being influenced by the evaluator's technical level and which is excellent in maintainability of evaluation results. is there.

[0008]

According to a first aspect of the present invention, there is provided a device deterioration evaluation support apparatus for extracting deterioration event candidates based on component data constituting a plant device and aged deterioration data, and based on maintenance history data. A deterioration event extraction unit that extracts deterioration events that require evaluation from the deterioration event candidates,
A deterioration event evaluation unit that outputs evaluation data of deterioration events extracted by the deterioration event extraction unit, and a maintenance plan that outputs a maintenance plan as a maintenance map based on the evaluation data of the deterioration event evaluation unit and specified creation conditions. It is characterized by having a development department.

In the equipment deterioration evaluation support apparatus according to the first aspect of the invention, the deterioration event extraction unit evaluates the deterioration of the plant equipment based on the component data of the plant equipment and the aged deterioration data, and the deterioration event candidate. Is further extracted, and deterioration events requiring evaluation are extracted from the deterioration event candidates based on the maintenance history data. Then, the deterioration event evaluation unit creates and outputs evaluation data of the deterioration event extracted by the deterioration event extraction unit, and the maintenance plan formulation unit performs maintenance based on the evaluation data of the deterioration event evaluation unit and the specified creation condition. Output the plan as a maintenance map.

According to a second aspect of the present invention, there is provided the equipment deterioration evaluation support apparatus according to the first aspect of the invention, in which the plant equipment is classified / grouped based on a specified classification condition, and is output to the deterioration event extraction unit. It is characterized by having a grouping unit.

In the equipment deterioration evaluation support apparatus according to the invention of claim 2, in addition to the operation of the invention of claim 1, the classification / grouping unit classifies / groups the plant equipment based on the specified classification condition. , To the deterioration event extraction unit. The deterioration event extraction unit extracts the deterioration event from the plant equipment classified and grouped by the classification / grouping unit, so that the deterioration event can be efficiently evaluated.

According to a third aspect of the present invention, there is provided the equipment deterioration evaluation support apparatus according to the first or second aspect of the invention, wherein the maintenance plan formulation section performs maintenance so that the maintenance cost for each year is as flat as possible. It is characterized by having a function of creating a map.

In the device deterioration evaluation support apparatus according to the third aspect of the present invention, in addition to the operation of the first or second aspect of the present invention, a condition for creating the maintenance map is that the maintenance cost for each year is flat. When designated, the maintenance plan formulation department creates a maintenance map so that the maintenance costs for each year are as flat as possible.

According to a fourth aspect of the present invention, there is provided the equipment deterioration evaluation support apparatus according to any one of the first to third aspects of the invention, wherein the deterioration event extraction unit is a main component based on the functional expansion of the plant equipment. It is characterized by having a function of performing extraction and extracting deterioration events for them.

In the equipment deterioration evaluation support apparatus according to the invention of claim 4, in addition to the operation of the invention of any one of claims 1 to 3, the deterioration event extracting section simply extracts parts of plant equipment. Instead, the main parts are extracted based on the function development, and the deterioration event is extracted for them. As a result, the deterioration event can be evaluated efficiently.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a block configuration diagram of a deterioration evaluation support device according to a first embodiment of the present invention.

The deterioration event extraction unit 11 extracts deterioration events that require evaluation when evaluating deterioration of plant equipment. The deterioration event candidate extraction unit 12 of the deterioration event extraction unit 11
Deterioration event candidates are extracted based on the component data constituting the plant equipment stored in the component database 13 and the aged deterioration data stored in the aged deterioration database 14. Then, the extracted deterioration event candidate is output to the output device as the extraction result P1 and is also output to the evaluation-needed deterioration event extraction unit 15 of the deterioration event extraction unit 11.

When the deterioration event candidate is input from the deterioration event candidate extraction unit 12, the evaluation required deterioration event extraction unit 15 evaluates the deterioration event candidate based on the maintenance history data stored in the maintenance history database 16. Extract deterioration events. Then, the extracted deterioration event requiring evaluation is output to the output device as the extraction result P2 and is output to the deterioration event evaluation unit 17.

Here, the parts database 13 stores equipment / part names, materials, consumables, etc., the aged deterioration database 14 stores deterioration events for each material / specification environment, and the maintenance history database 16 stores them. Stores the device / part name, inspection type, deterioration status and tendency, replacement history, and the like.

The deterioration event candidate extraction unit 12 of the deterioration event extraction unit 11 refers to the parts database 13 and the aged deterioration database 14 for all plant equipment, and refers to the parts data constituting the equipment and the aged deterioration occurrence condition. The deterioration event candidate of the device that deteriorates with time is extracted with reference to the deterioration data that has been summarized.

Furthermore, the evaluation-deterioration-event extraction unit 15 of the deterioration-event extraction unit 11 refers to the maintenance history database 16 that summarizes the maintenance results of each device and narrows down the evaluation-degradation events from the deterioration event candidates. It will be extracted.

For example, since the bearing is a metal product having a sliding portion, the deterioration event candidate extraction unit 12 of the deterioration event extraction unit 11 uses the deterioration database 14 for aged deterioration arranged in a dictionary for each material / use environment. Is searched for a metal product having a sliding portion, and a bearing which is a component satisfying the condition is searched from the component database 13. As a result, the wear of the bearing is extracted as the deterioration event candidate.

Further, in the deterioration event extraction section 15 of the deterioration event extraction section 11, a maintenance history database 16 including deterioration status and tendency for each device / part name, replacement history, etc.
With reference to, the deterioration-requiring event for evaluation is extracted with respect to a part that is found to be deteriorated or a part that has a replacement history. For example, if there is no replacement history based on the deterioration status and tendency of the bearing, it is extracted as a deterioration event requiring evaluation.

As described above, the deterioration event extraction unit 11 has a function of extracting the main parts based on the functional development of the plant equipment and extracting the deterioration event for them. 11 extracts not only the parts of the plant equipment but also the main parts based on the function development, and extracts the deterioration event for them. As a result, the deterioration event can be evaluated efficiently.

The deterioration event evaluation unit 17 includes a deterioration event extraction unit 1
The deterioration event extracted by the evaluation required deterioration event extraction unit 15 of No. 1 is deteriorated based on the maintenance history data stored in the maintenance history database 16 and the evaluation reference data stored in the evaluation reference database 18. Extract the evaluation data of the event. Then, the extracted evaluation data is output to the output device as the extraction result P3 and is output to the maintenance plan formulation unit 19.

The evaluation reference database 18 stores existing evaluation data and references. The existing evaluation data includes a replacement time, a replacement cycle, etc., and the evaluation result at the time of design and the evaluation result of a similar plant are incorporated as default. The existing evaluation data can be modified by the user with reference to the related reference documents and the maintenance history data in the maintenance history database 16.

The maintenance plan formulation unit 19 is the deterioration event evaluation unit 1
Based on the evaluation data from 7 and the preparation conditions specified by the input device, the maintenance plan is created by referring to the security plan reference database 20. Then, the created maintenance plan is output to the output device as a maintenance map P4.

Here, the maintenance plan reference database 20
The existing maintenance plan is stored in. The existing maintenance plan includes a replacement time, a replacement cycle, a replacement cost, and the like, and the existing maintenance plan such as a conventional maintenance plan and a maintenance plan for a similar plant is adopted as a default. This existing storage plan is updated based on the evaluation result of the deterioration event.

Further, the user inputs the maintenance map creation conditions from the input device. For example, the maintenance map is created in the electronic file format of commercially available application software by inputting each year, each type of equipment (system), and the like. The maintenance plan formulation unit 19 has a function of creating a maintenance map so that the maintenance cost of each year is as flat as possible, and the condition of creating the maintenance map is that the maintenance cost of each year is flat. When is specified, a maintenance map is created so that the maintenance costs for each year are as flat as possible.

The output device is a display device, a printer or the like, and each extraction result P output from the output device.
1, P2, P3 and maintenance map P4 are output in the form of a screen or paper.

According to the first embodiment, the deterioration event of the plant equipment is automatically extracted by the equipment deterioration evaluation support device, so that the deterioration event is extracted and evaluated systematically and efficiently. it can. Further, since the deterioration event is extracted based on the aged deterioration database and the maintenance history database, the user's technical level does not necessarily have to be an expert of the equipment, and the type of the extracted deterioration event depends on the user. Independent of skill level. Furthermore, the evaluation results are documented and stored in the electronic file format of commercially available application software, which facilitates management.

Next, a second embodiment of the present invention will be described. FIG. 2 is a block diagram of a device deterioration evaluation support device according to the second embodiment of the present invention. The second embodiment is different from the first embodiment shown in FIG. 1 in that it includes a classification / grouping unit 21 and a device database 22 for classifying / grouping plant devices and outputting them to the deterioration event extracting unit 11. It is an additional one. The same elements in FIG. 1 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 2, the classification / grouping unit 21
Refers to the equipment data stored in the equipment database 22 based on the classification condition specified by the input device by the user, and classifies / groups the plant equipment. Then, the classified and grouped plant equipment is output to the output device as the classified and grouped result P5 and is output to the deterioration event extraction unit 11. The deterioration event extraction unit 11 classifies
A deterioration event is extracted from the plant equipment classified and grouped by the grouping unit 21.

Here, the equipment database 22 stores equipment names, equipment categories, specifications, usage conditions, importance, materials and the like.

For example, if the user inputs “device category, material, use condition” from the input device as the classification condition, the classification / grouping unit 21 causes the device database 22.
Are read and processed, and are classified into groups having the same “equipment classification, material, usage conditions”. For example, "Pump" as the equipment category, "Made of cast iron" as the material, "Used at room temperature, pure water as the internal fluid" is extracted as the usage condition, and a cast iron pump with pure water as the internal fluid is used at normal temperature. The plant equipment is classified and grouped as shown in FIG.

As a result, the deterioration event extraction unit 11 extracts deterioration events from the plant equipment classified and grouped by the classification / grouping unit 21, so that the deterioration events can be evaluated efficiently.

[0037]

As described above, according to the present invention, it is possible to efficiently evaluate the deterioration event of the plant equipment even if a skilled engineer does not need to evaluate the deterioration event of the plant equipment over time. Further, it is possible to provide a device deterioration evaluation support device which can prevent the evaluation engineer from varying the work result and is excellent in maintainability of the evaluation result.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a device deterioration evaluation support device according to a first embodiment of the present invention.

FIG. 2 is a block configuration diagram of a device deterioration evaluation support device according to a second embodiment of the present invention.

[Explanation of symbols]

11 ... Degradation event extraction unit, 12 ... Degradation event candidate extraction unit, 1
3 ... parts database, 14 ... aged deterioration database,
15 ... Evaluation required deterioration event extraction unit, 16 ... Maintenance history database, 17 ... Degradation event evaluation unit, 18 ... Evaluation reference database, 19 ... Maintenance plan formulation unit, 20 ... Maintenance plan reference database, 21 ... Classification / grouping Department, 22 ... Equipment database

Claims (4)

[Claims] 1. A deterioration event in which deterioration event candidates are extracted based on component data constituting plant equipment and aged deterioration data, and deterioration events requiring evaluation are extracted from the deterioration event candidates based on maintenance history data. An extraction unit, a deterioration event evaluation unit that outputs evaluation data of the deterioration event extracted by the deterioration event extraction unit, and a maintenance plan as a maintenance map based on the evaluation data of the deterioration event evaluation unit and specified creation conditions. An equipment deterioration evaluation support device comprising: a maintenance plan formulation section for outputting. 2. The equipment deterioration evaluation according to claim 1, further comprising a classification / grouping unit that classifies / groups plant equipment based on a specified classification condition and outputs the classified / grouped plant equipment to the deterioration event extraction unit. Support device. 3. The maintenance plan formulation section has a function of creating a maintenance map so that the maintenance cost for each year is as flat as possible.
The equipment deterioration evaluation support device described. 4. The deterioration event extraction unit has a function of extracting main parts based on the functional development of plant equipment and extracting deterioration events for them. Item 4. The device deterioration evaluation support device according to any one of items 3.