JP2009129380A - Inspection period management device, management period management device, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To calculate an appropriate inspection period or management period to appropriately distribute maintenance costs. <P>SOLUTION: Information indicating the type of an inspection for inspecting equipment, the range of the inspection, and the degree of deterioration obtained as the result of the inspection is input from an input part 12. An inspection period table in which the calculation method of the inspection period to the equipment is defined is stored in a table storage part 20 according to an inspection effective index and the degree of deterioration to the equipment. The inspection effective index is calculated on the basis of the type of inspection and the range of inspection input from the input part 12 by an inspection effective index calculation part 18, the calculation method of the inspection period corresponding to the calculated inspection effective index and the degree of deterioration input from the input part 12 is acquired on the basis of the calculated inspection effective index and the inspection period table to calculate a marginal inspection period by an inspection period calculation part 24. Then, the next inspection time limit is calculated on the basis of the marginal inspection period by a next inspection time limit calculation part 24. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an inspection cycle management device, a management cycle management device, and a program, and more particularly, an inspection cycle management device and program for managing an inspection cycle for inspecting a device, and a management cycle management device for managing a cycle for managing the device. And the program.

  Conventionally, the equipment industry in chemical and petroleum refining, etc. has owned, maintained and managed many facilities. In consideration of the economics of these facilities, the facility management department of each company determines an appropriate inspection program and inspection cycle for deterioration and damage of the facilities in order to ensure complete safety. For example, there is known a plant life cycle maintenance plan planning system that grasps a long-term tendency of aging degradation and performance degradation of a plant and system equipment, and drafts and presents a maintenance plan over the life of the plant (Patent Document 1).

  In Japan, there are an increasing number of plants that have passed nearly 30 years since the installation of equipment. At the beginning of the design, the life of equipment is said to be 30 years, but there are many facilities that are still going to be used. In addition, as the movement of relocating production bases overseas has become more active, further safety, stability and low cost are desired for domestic facilities.

The equipment has many failures in the initial failure period, which is the initial stage of design, and the failure rate is low and constant in the subsequent accidental failure period. However, the failure rate increases again in the wear failure period after a certain period. In the initial failure period, “maintenance design”, “reliability design”, “life cycle design” are important themes. In the accidental failure period, time-based equipment management is the theme, and methods such as “importance classification”, “non-destructive inspection”, and “monitoring” are taken. However, many domestic facilities are now in the period of wear-out failure, and the appearance of deterioration damage is increasing due to aging deterioration phenomena such as fatigue, SCC, creep damage, and external corrosion, and the form of the damage is also complicated.
JP 2004-170225 A

  However, conventional TBM (Time Based Maintenance), CBM (Condition Based Maintenance), and RCM (Reliability Centered Maintenance) require safe and stable long-term continuous operation like chemical and petroleum refining plants. The equipment does not meet the sufficient requirements for setting the inspection time of the equipment to reflect the damage status and environment of the equipment, so an appropriate inspection cycle cannot be obtained, and maintenance costs are allocated appropriately. There is a problem that it was not possible to do.

  The present invention has been made to solve the above-described problems, and is capable of obtaining an appropriate inspection cycle or management cycle, and capable of appropriately allocating maintenance costs, and an inspection cycle management device. And to provide a program.

  In order to achieve the above object, the inspection cycle management apparatus according to the first invention inputs information indicating the type of inspection for inspecting equipment, the scope of the inspection, and the degree of deterioration obtained as a result of the inspection. Input means, storage means for storing a table defining an inspection cycle for the equipment according to the effective index representing the effectiveness of the inspection for the equipment and the degree of deterioration, and the inspection input from the input means Corresponding to the first calculation means for calculating the effective index based on the type and the range of the inspection, and the calculated effective index and the deterioration level input from the input means based on the table And a second calculating means for calculating an inspection cycle to be performed.

  A program according to a second aspect of the invention provides a computer, an input means for inputting information indicating the type of inspection for inspecting an apparatus, the scope of the inspection, and the degree of deterioration obtained as a result of the inspection, In accordance with the effective index representing the effectiveness of the inspection and the degree of deterioration, based on the storage means storing the table defining the inspection cycle for the device, the type of inspection input from the input means, and the range of the inspection, First calculation means for calculating the effective index, and second calculation for calculating an inspection period corresponding to the calculated effective index and the degree of deterioration input from the input means based on the table It is a program for functioning as a means.

  According to the first and second inventions, the input means inputs information indicating the type of inspection for inspecting the device, the scope of the inspection, and the degree of deterioration obtained as a result of the inspection. In addition, the storage means stores a table in which the inspection cycle for the device is determined according to the effective index indicating the effectiveness of the inspection for the device and the degree of deterioration.

  Then, the first calculating means calculates the effective index based on the examination type and the inspection range input from the input means, and the second calculating means calculates the effective index based on the table. An inspection cycle corresponding to the degree of deterioration input from the input means is calculated.

  In this way, by calculating the inspection cycle according to the effectiveness of the inspection of the equipment and the degree of deterioration obtained as a result of the inspection, an appropriate inspection cycle can be obtained and the maintenance cost can be appropriately distributed. it can.

  The type of inspection described above is visual inspection of the inner surface of the container wall surface constituting the device, inspection by a measuring instrument that measures the wall thickness of the container wall surface, visual inspection of the outer surface of the container wall surface, flaw detection inspection for the container wall surface, and container It may include at least one of deterioration inspection by sampling the wall surface.

  The first calculation means is effective for indicating the effectiveness of the inspection for the deterioration factor having the highest deterioration degree when information indicating the deterioration degree obtained as a result of the inspection from the input means is inputted for a plurality of deterioration factors. The index is calculated, and the second calculation means can calculate the inspection period corresponding to the calculated effective index and the deterioration degree of the deterioration factor having the highest deterioration degree input from the input means. Accordingly, since the inspection period can be calculated according to the inspection effectiveness and the deterioration degree for the deterioration factor having the highest deterioration degree, a more appropriate inspection period can be obtained.

  According to a third aspect of the present invention, there is provided a management cycle management device according to an input means for inputting information indicating a management history of managing a device, a management density representing the management density for the device, and a degradation potential. A first calculation that calculates the management density based on a storage unit that stores a table that defines a management cycle for the device, and the number of times and timing of management obtained from the information indicating the management history input from the input unit Means, second calculation means for calculating the deterioration potential based on the information indicating the management history input from the input means, and the calculated management density and the calculation based on the table. And a third calculating means for calculating a management cycle corresponding to the deterioration potential.

  According to a fourth aspect of the present invention, there is provided a program according to an input means for inputting information indicating a management history of managing a computer, a management density indicating the management density for the device, and a degradation potential according to the device. Storage means for storing a table defining a management cycle for the first calculation means for calculating the management density based on the number and timing of management obtained from the information indicating the management history input from the input means; Based on the information indicating the management history input from the input means, second calculation means for calculating the degradation potential, and based on the table, the calculated management density and the calculated It is a program for functioning as a third calculating means for calculating a management cycle corresponding to the deterioration potential.

  According to the third invention and the fourth invention, the information indicating the management history of managing the device is input by the input means. In addition, the storage unit stores a table that defines a management cycle for a device in accordance with a management density representing a management density for the device and a deterioration potential.

  Then, the management density is calculated by the first calculation means based on the number and timing of management obtained from the information indicating the management history input from the input means, and input from the input means by the second calculation means. The degradation potential is calculated based on the information indicating the management history.

  Then, the third calculation means calculates a management cycle corresponding to the calculated management density and the calculated deterioration potential based on the table.

  In this way, by calculating the management cycle according to the management density for the device and the degradation potential of the device, an appropriate management cycle can be obtained, and the maintenance cost can be appropriately distributed.

  The input means according to the third invention inputs information indicating a management history including the presence / absence of treatment for the device, and the second calculation means is based on the presence / absence of treatment of information indicating the management history input from the input means. Thus, the degradation potential can be calculated.

  As described above, according to the inspection cycle management apparatus and program of the present invention, by calculating the inspection cycle according to the effectiveness of the inspection of the equipment and the degree of deterioration obtained as a result of the inspection, an appropriate inspection cycle can be obtained. Can be obtained and the maintenance cost can be appropriately distributed.

  According to the management cycle management device and program of the present invention, by calculating the management cycle according to the management density for the device and the degradation potential of the device, an appropriate management cycle can be obtained, and the maintenance cost is appropriate. The effect that distribution can be performed is obtained.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. An example in which the present invention is applied to an inspection cycle management device that manages the inspection cycle of pressure equipment as equipment in the equipment industry in chemical and petroleum refining will be described.

  The inspection cycle management apparatus according to the first embodiment is a personal computer, and the personal computer temporarily stores CPU, data and RAM for storing calculation information related to various instructions, startup of the computer, and basic operations. It comprises a ROM for storing a program for instructing, an external storage device such as a hard disk for storing an OS (Operating System) and application software, a bus connecting them, and a chip set for controlling them.

  As shown in FIG. 1, the inspection cycle management apparatus 10 according to the present embodiment will be described with function blocks divided for each function realizing means determined based on hardware and software. And an input unit 12 for inputting information indicating an inspection type and an inspection result, an inspection data storage unit 13 for storing information indicating an input inspection type and an inspection result, and an inspection data storage Based on the inspection result stored in the unit 13, the deterioration degree calculating unit 14 that calculates the deterioration degree for each of a plurality of assumed deterioration factors, and the deterioration factor having the highest deterioration degree based on the calculated deterioration degree On the basis of the type of inspection and the content of the inspection stored in the inspection data storage unit 13 A test effective index calculating unit 18 for calculating a test effective index indicating the effectiveness of the test with respect to the controlling factor, and a method for calculating a limit test cycle, which is a security period until the next test, are determined according to the test effective index and the degree of deterioration. A table storage unit 20 that stores the inspection cycle table, and an inspection cycle calculation unit that calculates a limit inspection cycle based on the calculated inspection validity index, the calculated deterioration degree of the life control factor, and the stored inspection cycle table 22, the next inspection deadline calculation unit 24 for calculating the next inspection deadline based on the previous inspection year and the calculated limit inspection cycle, and a display, and an input screen for the inspection type and inspection result And a display unit 26 for displaying the calculated next inspection deadline.

Here, the principle of the present embodiment will be described. First, in RBI (Risk Based Inspection) defined by API (American Petroleum Institute), the likelihood of breakage is defined by the following equation (1).
Ease of damage = general failure probability x total equipment correction factor x management evaluation factor (1)
Here, the breakdown of the total of the device correction coefficients in the above equation (1) is composed of TMSF (technical module sub-factor), mechanical factors, general factors, and process factors as shown in Table 1 below.

  Here, TMSF is calculated from the deterioration rate and the inspection effectiveness, and has an overwhelmingly high score in the above equation (1). The inventors noticed this and thought that the risk could be reduced by the inspection activity (accuracy and range and frequency of inspection).

  Therefore, in this embodiment, after systematically analyzing the inspection method, inspection range, and inspection period related to past inspection data, the inspection effectiveness index corresponding to the deterioration damage factor caused by the use environment and operating conditions is evaluated. Then, the next inspection deadline, which is the security deadline for the next inspection (corresponding), is calculated from the inspection effective index and the deterioration degree of the defect obtained by the inspection.

  Next, the next inspection deadline will be described below. The next inspection deadline is an index of how long the next inspection should be performed. The item that should be substantially managed in the remaining life evaluation is the time of the next inspection. The next inspection deadline is positioned as an index indicating how long the maximum inspection period can be guaranteed from the current inspection state and facility state.

  In the present embodiment, the next inspection deadline is calculated as an index that indicates when the inspection should be performed by the minimum, based on the degree of deterioration of the inspection target equipment and the inspection effective index. In addition, as shown in FIG. 2, when the next inspection deadline is considered as the limit inspection cycle, setting the next inspection time that exceeds the limit inspection cycle is dangerous, and conversely, the next inspection time that is below the limit inspection cycle. It can be said that the setting is over-maintenance.

  In this way, it is possible to detect in advance the progress of unexpected deterioration in advance by evaluating whether each facility has been fully inspected or whether the inspection cycle is appropriate. By optimizing the next inspection time, it is considered possible to appropriately allocate maintenance costs.

  Next, the configuration of the inspection cycle management apparatus 10 according to the present embodiment will be described in detail. In the inspection cycle management apparatus 10, information indicating the type of inspection and the inspection result for the equipment to be inspected is input from the input unit 12 by the operator. Originally, RBI requires an engineering judge by highly specialized engineers. However, it is physically difficult to carry out these operations every year in the management of a large number of plant facilities. Therefore, in the present embodiment, from the input unit 12, the type of inspection ((1) visual inspection of the inner surface of the container wall constituting the equipment (inner surface visual inspection), ( 2) Inspection with a measuring instrument that measures the wall thickness of the container (thickness measurement), (3) Inspection by visual inspection of the outer surface of the container wall (visual inspection of the outer surface), (4) Flaw detection inspection (flaw detection inspection) on the container wall surface, 5) Eating out inspection of container wall surface, (6) Degradation inspection by sampling of container wall surface (degradation inspection by sampling), (7) Degradation inspection of container wall surface by SUMP, (8) Degradation inspection by measuring hardness of container wall surface) Detailed inspection types and inspection ranges for each inspection type, inspection results (including presence / absence of execution), deterioration degree, deterioration factors as inspection results for each inspection type And information showing the treatment is input.

  As the detailed types of inspection, for example, visual inspection and inspection by endoscope are input for inner surface visual inspection, and surface inspection and other inspection are input for thickness inspection. As for the inspection range, any one of 0%, less than 25%, 25% or more, 70% or more, and 90% or more is input as shown in FIG.

  In addition, the deterioration degree is a plurality of deterioration factors (thinning, pitting corrosion, high temperature oxidation, cracking SCC, embrittlement, creep, hydrogen erosion, nitrocarburizing, and eating out) that are assumed from the environment (temperature / material / etc.) In the literature. Etc.). The degree of deterioration is represented, for example, in five stages as shown in FIG. Degradation “5” indicates that there is an obvious damage that requires immediate repair, and degradation “4” indicates that there is a remaining life within 10 years or that there is an obvious damage that requires trend monitoring. The deterioration degree “3” indicates that there is no damage at present, but there is a sign of damage because damage has occurred in the past. Degradation degree “2” indicates that there is a possibility that damage may occur from the material or the environment due to some change, and there is a sign of damage. Degradation degree “1” indicates that no deterioration is observed. Indicates.

  As the information indicating the treatment, any of “Measures taken”, “Current state recovery by the same material,” “Incomplete measures”, and “Leave” is entered as the presence / absence of the measures. For “Restoring the current situation with the same material, etc.” and “Incomplete measures”, the contents of the measures are “Partial or complete update”, “Welding repair or patch plate repair”, “Grinder removal”, “Plug” , “Cleaning”, and “others: painting, blasting, pipe expansion, etc.” are input.

  The inspection data storage unit 13 stores the inspection data indicating the type of inspection, the content of the inspection, and the inspection result input from the input unit 12.

  The deterioration degree calculation unit 14 calculates the current deterioration degree for each assumed deterioration factor based on the inspection result of the inspection data stored in the inspection data storage unit 13. When there is inspection data related to multiple types of inspections that detected the same deterioration factor, for example, when there is inspection data for “internal visual inspection” and inspection data for “thickness measurement” for deterioration factor “thinning” Then, the deterioration degrees of the two inspection data are compared, and the higher deterioration degree is calculated as the current deterioration degree. Further, when damage has become apparent (when the deterioration level is 4 or 5), as shown in FIG. 5, the deterioration level after the treatment is calculated as the current deterioration level based on the presence or absence of the treatment and the content of the treatment. To do.

  The life factor determining unit 16 compares the calculated degrees of deterioration of the respective deterioration factors, and determines the deterioration factor having the highest degree of deterioration as the life dominant factor of the device to be inspected. When there are a plurality of deterioration factors having the highest degree of deterioration, the one with the lower inspection density is given priority and determined as the life dominating factor.

  Based on the type of inspection of inspection data stored in the inspection data storage unit 13 and the content of the inspection, the inspection effectiveness index calculation unit 18, as described below, indicates the inspection effectiveness indicating the effectiveness of the inspection with respect to the life control factor. Calculate the index.

  First, since a certain inspection type is not always effective for all deterioration factors, the life control factor is based on a matrix showing the effectiveness of each inspection type for each deterioration factor as shown in FIG. Select a valid test type for. In the matrix shown in FIG. 6, “very effective” (see “◎” in FIG. 6), “effective” (see “◯” in FIG. 6), and “effective to some extent” (see “△” in FIG. 6). "Invalid" (see blank in FIG. 6) represents the validity.

  And, for example, when “internal visual inspection” and “thickness measurement” are selected as effective inspection types for “life reduction” which is a life-dominating factor, for each effective inspection type, Based on the range and detailed type of inspection, an inspection effectiveness index is calculated. The inspection effectiveness index is calculated based on the detailed type of inspection and the inspection range. The test effectiveness index is expressed, for example, in six stages. The test effectiveness index “5” indicates that the test effectiveness index is very effective, the test effectiveness index “4” indicates that it is quite effective, and the test effectiveness index “ “3” indicates that it is effective to some extent. Further, the inspection effective index “2” indicates that the inspection is not so effective, the inspection effective index “1” indicates that the inspection is not effective, and the inspection effective index “0” indicates that there is no inspection. If the inspection effective index is 3 or more, it indicates that the inspection is sufficient, and if the inspection effective index is 1 or 2, it indicates that the inspection is insufficient, and the inspection effective index is 0. If present, it indicates that it has not been inspected.

  When the inspection effective index is obtained for a plurality of inspection types, the inspection effective index for the life control factor is calculated from the inspection effective indexes for the plurality of inspection types.

  The table storage unit 20 stores an inspection cycle table that defines a pattern of a method for calculating a limit inspection cycle according to the inspection effectiveness index and the degree of deterioration as shown in FIG. In the inspection cycle table, when the degradation level is 5 (for example, when there is significant damage and immediate response is required), the calculation pattern I is determined and the degradation level is 4. Corresponding to (for example, when the degree of damage is small and the response can be determined by predicting the remaining life), the calculation pattern II is defined.

  In addition, the inspection cycle table has a calculation pattern I corresponding to the case where the degree of deterioration is 2 or 3 and within 4 years after repair, and the inspection effective index after repair is 2 or less. Is calculated, corresponding to the case where the deterioration degree is 2 or 3, the repair is within 4 years, and the inspection effective index after repair is 3 or more. It has been.

  Further, in the inspection cycle table, the calculation pattern I is determined corresponding to the case where the deterioration degree is 2 or 3, and the inspection effective index is 0 since the installation, and the deterioration degree is 2 or 3 and since the renewal, the calculation pattern IV is determined corresponding to the case where the inspection validity index is 0 for a period longer than the past life record.

  The inspection cycle table has a calculation pattern I corresponding to the case where the deterioration degree is 2 or 3 and the inspection effective index is 0 for a period of two years or more since the update. When the degradation degree is 2 or 3, and the past inspection effective index is 1, and the recent inspection effective index is 2 or less (for example, in the past, there is an inspection of a fixed point thickness measurement degree, In recent years, a calculation pattern III is defined corresponding to a case where the inspection is insufficient.

  In addition, in the inspection cycle table, the deterioration degree is 2 or 3, and the inspection effective index 1 is continued (for example, when only the fixed point thickness measurement is continued), When the calculation pattern III is defined, the degree of deterioration is 2 or 3, and the inspection effectiveness index is 1 or 2 (for example, the inspection is performed for the deterioration factor but the inspection effectiveness is insufficient) ), A calculation pattern III is defined.

  In the inspection cycle table, when the degree of deterioration is 2 or 3, the past inspection effective index is 3 or more, and the recent inspection effective index is 2 or less (for example, sufficient inspection in the past). However, the calculation pattern IV is defined corresponding to the case where the inspection is insufficient in recent years, the degree of deterioration is 2 or 3, and the inspection effective index is 3 or more (for example, assumed) The calculation pattern IV is determined in accordance with the deterioration factor that is observed, but the soundness is confirmed by sufficient inspection).

  Further, in the inspection cycle table, the calculation pattern V corresponds to the case where the deterioration degree is 1 and the inspection effective index is any one of 1 to 4 (when there is an inspection result within the deadline). It has been established.

  Calculation pattern I is a calculation method that sets the limit inspection cycle to 0 years (immediate repair required). Calculation pattern II sets the limit inspection cycle to 0 years (immediate repair required) unless remaining life prediction is performed. If the remaining life is predicted, the minimum value among the predicted remaining life, the current period, and 3 years is calculated as the limit inspection period.

  The calculation pattern III is a method of calculating the minimum value of the current cycle and 3 years as the limit inspection cycle, and the calculation pattern IV is 12 years, the current cycle, the period during which a healthy state has been maintained, and the past This is a method of calculating the minimum value with the maximum value in the actual period in which a healthy state is maintained as the limit inspection deadline. The calculation pattern V is a calculation method in which the limit inspection cycle is 12 years.

  The inspection cycle calculation unit 22 obtains a calculation method determined according to the inspection effective index for the calculated life dominating factor and the calculated deterioration degree of the life dominating factor based on the stored inspection cycle table. The limit inspection period is calculated according to the acquired calculation method.

The next inspection deadline calculation unit 24 calculates the next inspection deadline according to the following equation (2) using the calculated limit inspection cycle.
Last inspection year + Limit inspection cycle = Next inspection deadline (2)
In addition, what is necessary is just to acquire the last test | inspection year in said Formula (2) based on the test | inspection data memorize | stored in the test | inspection data memory | storage part 13. FIG.

  Next, the operation of the inspection cycle management apparatus 10 according to the first embodiment will be described. First, on the input screen as shown in FIG. 8 displayed by the display unit 26, the operator selects the type of inspection, the content of inspection (inspection range and detailed type of inspection), and the inspection result (result of life prediction). The degree of deterioration, the deterioration factor, the presence / absence of treatment, and the content of the treatment) are input for each type of inspection performed, and the input inspection data is stored in the inspection data storage unit 13.

  Then, the inspection cycle management apparatus 10 executes the inspection cycle management processing routine shown in FIG.

  First, in step 100, processing for calculating the current degree of deterioration of the equipment to be inspected is executed. The step 100 is realized by a deterioration degree calculation processing routine shown in FIG.

  In step 120, the inspection data in which the target deterioration factor is detected is acquired from the inspection data related to the previous inspection stored in the inspection data storage unit 13, and in step 122, the inspection data acquired in step 120 above is obtained. Information indicating the treatment is acquired.

  In step 124, it is determined whether or not there is inspection data having a degree of deterioration of “4” or “5” among the inspection data acquired in step 120. If there is no inspection data with the degree of degradation “4” or “5”, the process proceeds to step 128, while if there is inspection data with the degree of deterioration “4” or “5”. In step 126, based on the information (the presence / absence of treatment and the content of the treatment) indicating the treatment acquired in step 122, the deterioration degree of the inspection data is corrected to the deterioration degree after the treatment, and the process proceeds to step 128. .

  In step 128, it is determined whether or not inspection data of a plurality of inspection types has been acquired in step 120. If it is determined in step 128 that only inspection data of one inspection type has been acquired, the deterioration degree of the inspection data of one inspection type is determined as the deterioration degree for the target deterioration factor in step 130. Output, and the deterioration degree calculation processing routine ends. On the other hand, if it is determined in step 128 that the inspection data of a plurality of inspection types has been acquired, in step 132, the inspection data of the inspection type having the larger degree of deterioration among the plurality of inspection types. Is selected, the degree of deterioration of the inspection data of the selected inspection type is output as the degree of deterioration for the target deterioration factor, and the deterioration degree calculation processing routine is terminated.

  The above-described deterioration degree calculation processing routine is executed for each deterioration factor, and the current deterioration degree is calculated for each deterioration factor.

  Then, in step 102 of the inspection cycle management processing routine, the deterioration levels of the respective deterioration factors calculated in step 100 are compared, and the deterioration factor having the highest deterioration level is determined as the life control factor. When there are a plurality of deterioration factors having the highest degree of deterioration, based on the inspection data stored in the inspection data storage unit 13, for each of the deterioration factors having the highest degree of deterioration, an inspection effective for the deterioration factor is performed. The inspection density may be calculated and determined as a deterioration factor and a life dominating factor with a low effective inspection density.

  In step 104, inspection data of the type of inspection effective for the life control factor determined in step 102 is acquired from the inspection data stored in the inspection data storage unit 13.

  In the next step 106, an inspection validity index for the life control factor is calculated based on the inspection range of the inspection data of the inspection type effective for the life control factor acquired in step 104 and the detailed type of the inspection. Note that if there are a plurality of inspection type inspection data effective for the life control factor acquired in step 104, the test effective index for the life control factor is calculated based on the inspection effective index for each inspection type. Note that, in the above-described step 106, the inspection effectiveness index is calculated for each past inspection year.

  In step 108, based on the inspection cycle table stored in the table storage unit 20, the deterioration degree of the life dominating factor among the deterioration degrees calculated in step 100 and the life dominating factor calculated in step 106. The calculation method of the limit inspection period according to the inspection effective index for is acquired.

  In the next step 110, a limit inspection cycle is calculated according to the limit inspection cycle calculation method acquired in step 108. In step 112, based on the previous inspection year and the limit inspection cycle calculated in step 110. Then, the next inspection deadline is calculated according to the above equation (2). In step 114, the next inspection deadline calculated in step 112 is displayed on the display unit 26, and the inspection cycle management processing routine is terminated.

  Then, the operator formulates a maintenance plan using the next inspection deadline displayed on the display unit 26.

  As described above, according to the inspection cycle management apparatus according to the first embodiment, the inspection cycle according to the effectiveness of the inspection of the equipment and the degree of deterioration obtained as a result of the inspection is calculated appropriately. A proper inspection cycle can be obtained, and maintenance costs can be appropriately distributed.

  In addition, since the inspection cycle can be calculated according to the inspection effectiveness and the deterioration level for the deterioration factor having the highest deterioration level, a more appropriate inspection cycle can be obtained.

  In addition, the effectiveness of the inspection can be determined quantitatively, and the period during which the previous inspection result can be guaranteed can be defined from the inspection effectiveness and the degree of deterioration as the inspection result in each fiscal year. Risk of damage trouble can be greatly reduced.

  Further, maintenance management can be performed by introducing a quantitative judgment standard for maintenance management that has conventionally relied on the qualitative judgment of maintenance personnel. Moreover, it is possible to set an appropriate cycle according to the concept of the limit inspection cycle, and it is possible to appropriately allocate maintenance costs.

  Next, a second embodiment will be described. In addition, about the part which becomes the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The second embodiment is different from the first embodiment in that the inspection effective index for the life control factor is calculated in consideration of the inspection effective index related to the inspection prior to the previous inspection.

  In the inspection cycle management apparatus according to the second embodiment, inspection data for each past year is stored in the inspection data storage unit 13, and limit inspection is performed based on inspection data relating to inspections prior to the previous time. The deadline is calculated in advance, and the limit inspection deadline is stored together with the inspection data relating to the inspection prior to the previous time.

  The inspection effective index calculation unit 18 calculates an inspection effective index for the life control factor for each year. Further, when the inspection effectiveness index for the life-controlling factor for each year is calculated, it is determined whether or not the inspection conducted in the past is determined to be effective in the year to be evaluated. This is the idea that, for example, for equipment that is inspected at a cycle of 3 years (guaranteed only for 3 years after the inspection), the effectiveness of the most recent inspection becomes ineffective after 3 years. In addition, when an examination with high effectiveness of examination is performed, within the validity period, even if the validity of the latest examination is low, the effectiveness of the validity of the high examination is given priority.

  As described above, based on the inspection effective index for the life control factor for each year, the inspection effective index for the life control factor having the current effect is calculated as the inspection effective index for the final life control factor.

  In the inspection cycle management apparatus according to the second embodiment, the inspection effective index calculation processing routine shown in FIG. 11 is executed when calculating the inspection effective index for the life control factor.

  First, in step 200, the inspection data of the inspection type effective for the life control factor is acquired for each inspection year from the inspection data stored in the inspection data storage unit 13.

  In the next step 202, for each inspection year, the inspection effective index for the life control factor is calculated based on the inspection range of the inspection data of the inspection type effective for the life control factor acquired in step 200 and the detailed type of the inspection. calculate. In addition, when there are a plurality of inspection data of effective inspection types for the acquired life control factor, the inspection effective index for the life control factor is calculated based on the inspection effective index for each inspection type.

  In step 204, it is determined whether or not there is an inspection year in which the inspection effective index for the life control factor is higher than the inspection effective index for the life control factor in the previous inspection for the inspection year prior to the previous inspection year.

  In the above step 204, when the inspection effectiveness index for the life control factor in the previous inspection is the highest, the routine proceeds to step 212. On the other hand, if there is an inspection year in which the inspection effective index for the life dominating factor is higher than the inspection effective index for the life dominating factor in the previous inspection, the year is set in a variable Z in step 206.

  In step 208, the limit inspection period obtained for the inspection in year Z is acquired from the inspection data in the inspection data storage unit 13, and in step 210, the value obtained by subtracting year Z from the current year is It is determined whether or not it is larger than the limit inspection period acquired in step 208.

  In the above step 210, if the value obtained by subtracting the year Z from the current year is larger than the limit inspection period obtained for the inspection in the year Z, the validity of the inspection validity of the inspection in the year Z is lost. In step 212, the inspection effective index for the life control factor in the previous inspection is output, and the inspection effective index calculation processing routine is terminated.

  On the other hand, if the value obtained by subtracting the year Z from the current year is equal to or less than the limit inspection cycle obtained for the inspection in the year Z in the above step 210, the inspection validity of the inspection in the year Z is effective. In step 214, the inspection effective index for the life control factor in the inspection of year Z is output as the inspection effective index for the current life control factor, and the inspection effective index calculation processing routine is terminated.

  In this way, it is possible to determine the effectiveness of the inspection for the facility in consideration of the effectiveness related to the inspection before the previous time.

  Next, a third embodiment will be described. In addition, about the part which becomes the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the third embodiment, an example in which the present invention is applied to a management cycle management apparatus that manages a management cycle of a moving equipment to be used while exchanging consumable parts will be described.

  As shown in FIG. 12, the management cycle management apparatus 310 according to the third embodiment is configured with point devices such as a keyboard and a mouse, and inputs information indicating management history including management contents and management results. Input unit 312, a management data storage unit 313 that stores information indicating the input management history, and each of a plurality of parts of the management target device based on the management history stored in the management data storage unit 313 A degradation potential calculation unit 314 that calculates a degradation potential for a lifetime, and a lifetime part determination unit 316 that determines, based on the calculated degradation potential, a part having the highest degradation potential as a lifetime dominant part of the management target device. A management density calculation unit 318 for calculating a management density for the life-dominating part based on the management history stored in the management data storage unit 313, and a management density and a degradation latency Depending on the degree, a table storage unit 320 that stores a management cycle table that defines a calculation method of a limit management cycle that is a guarantee period until the next management, a calculated management density, and a calculated deterioration probability of a life-dominating part And a management period calculation unit 322 that calculates a limit management period based on the stored management period table, and a next management period that calculates a next management period based on the previous management year and the calculated limit management period A calculation unit 324 and a display unit 26 are provided.

  In the management cycle management device 310, information indicating management history including management contents and management results for the management target device is input from the input unit 312 for each management such as replacement of consumables performed. The input unit 312 inputs a management type, a part, and a management range as management contents, and information indicating a deterioration level and a treatment as a management result.

  The management data storage unit 313 stores management data indicating the management history including the management contents and management results as input from the input unit 312.

  The degradation potential calculation unit 314 calculates the current degradation potential for each part of the device based on the presence / absence of the treatment and the content of the treatment obtained from the management history of the management data stored in the management data storage unit 313. .

  The deterioration potential is calculated for each of a plurality of parts (casing, rotating body, joint, bearing, seal, lubricant, etc.) of the device to be managed.

  The deterioration potential is represented by, for example, four levels. Degradation potential “4” indicates that the degradation is not excluded, degradation probability “3” indicates that there is a high possibility that the degradation is latent, and it is impossible to deny the recurrence of the damage. “2” indicates that although there is a low possibility that deterioration is latent, it indicates that recurrence of damage cannot be denied, and “1” indicates that deterioration is not recognized.

  The life part determination unit 316 compares the calculated deterioration potentials of the respective parts, and determines the part having the highest deterioration potential as the life dominant part of the management target device.

  The management density calculation unit 318 calculates the management density for the life-dominating part based on the number of managements and the management period obtained from the management history of the management data stored in the management data storage unit 313 as described below.

  The management density is calculated based on the number of management times and the management period. The management density is expressed in, for example, four levels, the management density “4” indicates that management is performed, the management density “3” indicates that management has not been performed in recent years, and the management density “2” is The management cycle is long, and the management density “1” indicates that no management is performed.

  The table storage unit 320 stores a management cycle table that defines a pattern of a limit management cycle calculation method according to the management density and the degradation potential.

  Based on the stored management cycle table, the management cycle calculation unit 322 obtains a calculation method determined in accordance with the calculated management density for the life-dominated part and the calculated deterioration probability of the life-dominated part. The limit management cycle is calculated according to the acquired calculation method.

The next management time limit calculation unit 324 calculates the next management time limit according to the following expression (3) using the calculated limit management cycle.
Last management year + Marginal management cycle = Next management deadline (3)
The previous management year in the above equation (3) may be obtained based on the management data stored in the management data storage unit 313.

  Next, the operation of the management cycle management apparatus 310 according to the third embodiment will be described. First, the operator includes management contents (management type, part, management range) and management results (degradation level, presence / absence of action, and action contents) for the input screen displayed by the display unit 26. A management history is input for each management performed, and the input management data is stored in the management data storage unit 313.

  Then, in the management cycle management device 310, a management cycle management processing routine shown in FIG. 13 is executed.

  First, in step 350, a process for calculating the degradation potential of the device to be managed is executed. The step 350 is realized by a deterioration potential calculation processing routine shown in FIG.

  In step 370, management data for the target part is acquired from the examination data stored in the management data storage unit 313. In step 372, it is determined whether or not management data for the target part is acquired in step 370. .

  If the management data is not acquired in step 372, it is determined that there is no management history for the target part, and in step 374, whether or not the managed device has been used for more than 10 years. Determine whether. If it is determined in step 374 that more than 10 years have passed since the start of use, it is determined that the management is not performed at all, and in step 376, the management density “1” is output to calculate the deterioration potential. The processing routine ends.

  If it is determined in step 374 that ten years or more have not elapsed since the start of use, the process proceeds to step 378.

  If the management data is acquired in step 372, it is determined that there is a management history for the target part, and the process proceeds to step 378.

  In step 378, the number of times of management for the target part is counted based on the management data acquired in step 370, and in step 380, the use of the management target device is determined based on the management data acquired in step 370. Calculate the management period from the start to the previous management.

  In the next step 382, the average management period T is calculated by dividing the management period calculated in step 380 by the number of managements counted in step 378. In step 384, it is determined whether or not the average management period T calculated in step 382 is greater than a predetermined threshold. In addition, said threshold value is defined for every site | part, for example, 12 is defined as a threshold value with respect to a casing, a rotary body, and a joint, 4 is defined as a threshold value with respect to a bearing, Thus, a threshold value 2 is set, and a threshold value 1 is set for the lubricating oil.

  If the average management cycle T is greater than the threshold value in step 384, it is determined that the management cycle is long, and in step 386, the management density “2” is output, and the deterioration potential calculation processing routine is terminated. On the other hand, if the average management period T is equal to or less than the threshold value in step 384, it is determined in step 388 whether the average management period T is less than a value obtained by subtracting the previous management year from the current year. judge. If the average management cycle T is less than the value obtained by subtracting the previous management year from the current year in step 388, it is determined that the management has not been managed in recent years. In step 390, the management density “3” is set. To output the degradation potential calculation processing routine. On the other hand, if the average management period T is equal to or greater than the value obtained by subtracting the previous management year from the current year in step 388, it is determined that the management is being performed. In step 392, the management density “4” is determined. Is output to end the deterioration potential calculation processing routine.

  The above deterioration potential calculation processing routine is executed for each part, and the deterioration potential is calculated for each part.

  In step 352 of the management cycle management processing routine, the deterioration potentials of the respective parts calculated in step 350 are compared, and the part having the highest deterioration potential is determined as the life dominant part. When there are a plurality of parts having the highest degradation potential, the management density for the part is calculated for each part having the highest degree of degradation based on the management data stored in the management data storage unit 313. A part having a low management density may be determined as a life-dominating part.

  In step 354, a process for calculating the management density for the life dominant part determined in step 352 is performed. Here, the step 354 is realized by a management density calculation processing routine shown in FIG.

  First, in step 400, management data for management of the life control part is acquired from the management data stored in the management data storage unit 313. In step 402, it is determined whether or not the life-dominating part has deteriorated based on the deterioration degree of the management data related to the previous management among the management data acquired in step 400. If it is determined in step 402 that there is no deterioration, in step 404, the lifetime in the previous management is based on the management data related to the previous management out of the management data acquired in step 400. It is determined whether or not there is a treatment for the dominant site.

  If there is no action in the previous management in step 404, it is determined that there is no deterioration in the life-dominating part, and in step 406, the deterioration probability “1” is output, and the management density calculation processing routine Exit. On the other hand, when there is a measure in the previous management in step 404, in step 408, based on the management data related to the previous management, the improvement process for the life control part is performed in the previous management. It is determined whether or not there was.

  In step 408, if there is no improvement measure in the previous management, it is determined that recurrence cannot be denied. In step 418, the deterioration potential “2” is output and the management density calculation processing routine is terminated. To do. On the other hand, in the above step 408, if there is an improvement measure in the previous management and the current state of recovery has been performed, it is determined that there is no deterioration in the life control part, and in step 406, the deterioration probability “1”. Is output and the management density calculation processing routine is terminated.

  If it is determined in step 402 that there is a deterioration, it is determined in step 410 whether or not there has been a treatment for the life control part in the previous management based on the management data related to the previous management. If there is no action in the previous management in step 410, it is determined that the deterioration has not been eliminated. In step 412, the deterioration potential “4” is output, and the management density calculation processing routine is terminated. . On the other hand, if there is a measure in the previous management in Step 410, whether or not there has been a treatment for the life control part in the previous management based on the management data related to the previous management in Step 414. Determine.

  In the above step 414, if there is a treatment for the life dominant part in the previous management, it is determined that recurrence cannot be denied. In step 416, the deterioration potential “3” is output, and the management density calculation process End the routine. On the other hand, if there is no treatment for the life dominant part in the previous management in step 414, it is determined that recurrence cannot be denied, and in step 418, the deterioration potential “2” is output, and the management density The calculation processing routine ends.

  In step 356 of the management cycle management processing routine, based on the management cycle table stored in the table storage unit 320, the deterioration potential of the life-dominating part of the deterioration potential calculated in step 350, and the above A method for calculating a limit management period according to the management density for the life-dominating part calculated in step 354 is acquired.

  In the next step 358, the limit management cycle is calculated according to the limit management cycle calculation method acquired in step 356, and in step 360, based on the previous management year and the limit management cycle calculated in step 358. Then, the next management deadline is calculated according to the above equation (3). In step 362, the next management deadline calculated in step 360 is displayed on the display unit 26, and the management cycle management processing routine is terminated.

  Then, the operator uses the next management deadline displayed on the display unit 26 to formulate a maintenance plan.

  As described above, according to the management cycle management apparatus according to the third embodiment, appropriate management can be performed by calculating the management cycle according to the management density for the moving equipment and the deterioration potential of the moving equipment. The period can be determined, and maintenance costs can be appropriately distributed.

  In addition, since the management cycle can be calculated according to the management density and the degradation potential for the part with the highest degradation potential, a more appropriate management cycle can be obtained.

It is the schematic which shows the structure of the test | inspection period management apparatus which concerns on the 1st Embodiment of this invention. It is a graph for demonstrating the relationship between a limit inspection period and the present period. It is an image figure which shows a test | inspection range. It is a figure for demonstrating a deterioration degree. It is a matrix which shows the relationship between the presence or absence of treatment, the content of treatment, and the degree of deterioration after treatment. It is a matrix which shows the effectiveness corresponding to the kind of inspection, and a deterioration factor. It is an image figure which shows the test period table which defined the pattern of the calculation method of the limit test period according to a test | inspection effective index | exponent and a deterioration degree. It is an image figure which shows the input screen for inputting the kind of test | inspection, the content of a test | inspection, and a test result. It is a flowchart which shows the content of the test | inspection period management process routine in the test | inspection period management apparatus which concerns on the 1st Embodiment of this invention. It is a flowchart which shows the content of the deterioration degree calculation process routine in the test | inspection period management apparatus which concerns on the 1st Embodiment of this invention. It is a flowchart which shows the content of the test | inspection effective index calculation process routine in the test | inspection period management apparatus which concerns on the 2nd Embodiment of this invention. It is the schematic which shows the structure of the management period management apparatus which concerns on the 3rd Embodiment of this invention. It is a flowchart which shows the content of the management cycle management processing routine in the management cycle management apparatus which concerns on the 3rd Embodiment of this invention. It is a flowchart which shows the content of the degradation latency calculation processing routine in the management period management apparatus which concerns on the 3rd Embodiment of this invention. It is a flowchart which shows the content of the management density calculation process routine in the management cycle management apparatus which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Inspection period management apparatus 12, 312 Input part 13 Inspection data storage part 14 Degradation degree calculation part 16 Life factor determination part 18 Inspection effective index calculation part 20, 320 Table storage part 22 Inspection period calculation part 24 Next inspection deadline calculation part 310 Management Cycle management device 313 Management data storage unit 314 Degradation potential calculation unit 316 Life site determination unit 318 Management density calculation unit 322 Management cycle calculation unit 324 Next management deadline calculation unit

Claims (7)

An input means for inputting information indicating the type of inspection for inspecting the device, the scope of the inspection, and the degree of deterioration obtained as a result of the inspection;
A storage unit that stores a table that defines an inspection cycle for the device in accordance with an effective index representing the effectiveness of the inspection for the device and the degree of deterioration;
First calculation means for calculating the effective index based on the type of examination and the range of the examination input from the input means;
Second calculating means for calculating an inspection period corresponding to the calculated effective index and the degree of deterioration input from the input means based on the table;
Inspection cycle management device including   The type of inspection is visual inspection of the inner surface of the container wall constituting the device, inspection by a measuring instrument that measures the wall thickness of the container wall, visual inspection of the outer surface of the container wall surface, and flaw detection inspection on the container wall surface. The inspection cycle management apparatus according to claim 1, further comprising at least one of a deterioration inspection by sampling of the container wall surface. The first calculating means represents the inspection effectiveness for the deterioration factor having the highest degree of deterioration when information indicating the deterioration degree obtained as a result of the inspection from the input means is input for a plurality of deterioration factors. Calculate the effective index,
The said 2nd calculation means calculates the test period corresponding to the said calculated effective index and the deterioration degree of the deterioration factor with the highest deterioration degree input from the said input means. Inspection cycle management device. An input means for inputting information indicating a management history of managing the device;
Storage means for storing a table that defines a management cycle for the device according to a management density and a degradation potential representing the management density for the device;
First calculating means for calculating the management density based on the number and timing of management obtained from the information indicating the management history input from the input means;
Second calculation means for calculating the deterioration potential based on information indicating the management history input from the input means;
Third calculation means for calculating a management period corresponding to the calculated management density and the calculated deterioration potential based on the table;
A management cycle management device. The input means inputs information indicating the management history including the presence or absence of treatment for the device,
The management cycle management apparatus according to claim 4, wherein the second calculation unit calculates the deterioration potential based on presence / absence of treatment of information indicating the management history input from the input unit. Computer
An input means for inputting information indicating the type of inspection for inspecting the device, the scope of the inspection, and the degree of deterioration obtained as a result of the inspection;
A storage unit storing a table that defines an inspection cycle for the device in accordance with an effective index representing the effectiveness of the inspection for the device and the degree of deterioration;
First calculation means for calculating the effective index based on the type of inspection and the range of the inspection input from the input means, and the calculated effective index and the input means based on the table The program for functioning as a 2nd calculation means which calculates the test | inspection period corresponding to the said deterioration degree input from. Computer
An input means for inputting information indicating the management history of managing the device;
Storage means for storing a table that defines a management cycle for the device according to a management density and a degradation potential representing the management density for the device;
First calculation means for calculating the management density based on the number and timing of management obtained from the information indicating the management history input from the input means;
Second calculation means for calculating the deterioration potential based on the information indicating the management history input from the input means; and the calculated management density and the calculated based on the table. A program for functioning as a third calculation means for calculating a management cycle corresponding to the deterioration potential.

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