Work management support device, work management support method, and work management support program

Abstract

To confirm that, in a case where a parameter of a management item which is a constraint condition for a nuclear power plant inspection work deviates from a plan, a planned procedure is not affected from a tolerance of the constraint condition.SOLUTION: A work management support device 1 includes a constraint condition analysis section 11 that, from work management units constituting a nuclear power plant maintenance plan and tolerance of a constraint condition given to each work management unit, evaluates a work completion probability between consecutive work management units, and a constraint condition monitoring section 12 that makes tolerance comparison by analyzing, from work result information, the gap between a plan and a result of each of the constraint conditions given to the work management units.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a work management support device, a work management support method, and a work management support program. [Background technology]

[0002] In nuclear power plants, the reactor is shut down for periodic inspections (routine inspections) to inspect each piece of equipment at the nuclear power plant, replace parts / repair them (collectively referred to as "maintenance" in this specification), and carry out modification work. These routine inspections are carried out based on a routine inspection schedule in order to be completed within a specified period.

[0003] For example, Patent Document 1 discloses a regular inspection process creation support device that includes a database that stores information on work performed during a regular inspection period input from an input unit, inspection equipment data, safety regulation data, and past regular inspection process performance data, an inspection process creation procedure creation function unit that automatically generates a main process schedule consisting of main processes related to the critical process by referring to the past regular inspection process performance data from basic information related to the critical process among the information on work performed during the regular inspection period stored in the database, and determines an order for determining the timing of the inspection process for a plurality of inspection equipment other than the critical process from information on work performed for the equipment, and a schedule creation function unit that displays times that can be assigned to the main process schedule when determining the timing of the inspection process for the inspection equipment according to the order, thereby enabling even non-expert engineers to create regular inspection process plans that take the safety of the power plant into consideration. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2021-135144 A Summary of the Invention [Problem to be solved by the invention]

[0005] During regular inspections, nuclear power plant managers decide on the inspection menu and create inspection plans based on work constraints. Conventionally, if deviations from the plan occurred during implementation, experienced process managers would use margins arbitrarily set by each person in charge or with experience, and consider recovery measures. However, because operations were suspended for a long time after the earthquake, the number of experienced process managers has decreased, and it is no longer possible to rely on individual knowledge and experience.

[0006] Therefore, an object of the present invention is to confirm that when the parameters of the control items that are the constraints for the periodic inspection work of the nuclear power plant deviate from the plan, the planned process is not affected due to the margin of the constraints. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the work management support device of the present invention is characterized by comprising a constraint condition analysis unit that evaluates the feasibility of work between successive work management units based on the work management units that make up a plant maintenance plan and the tolerances of the constraint conditions assigned to the work management units, and a constraint condition monitoring unit that performs a gap analysis between the plan and actual results of each of the constraint conditions assigned to the work management units based on work performance information, and compares the tolerances.

[0008] The work management support method of the present invention is characterized by comprising a step in which a constraint condition analysis unit evaluates the feasibility of work between successive work management units based on the work management units that constitute a plant maintenance plan and the tolerances of the constraint conditions assigned to the work management units, and a step in which a constraint condition monitoring unit performs a gap analysis between the plan and actual results of each of the constraint conditions assigned to the work management units based on work performance information, and compares the tolerances.

[0009] The work management support program of the present invention is for causing a computer to execute the following procedures: a procedure for evaluating the feasibility of work between successive work management units based on the work management units constituting a plant maintenance plan and the tolerances of the constraint conditions assigned to the work management units; and a procedure for performing a gap analysis between the plan and actual results of each of the constraint conditions assigned to the work management units based on work performance information, and comparing the tolerances. Other means will be described in the description of the embodiment of the invention. Effect of the Invention

[0010] According to the present invention, when the parameters of the control items that are the constraints for the periodic inspection work of a nuclear power plant deviate from the plan, it is possible to confirm that the planned process is not affected by the margin of the constraints. Furthermore, when a change in the planned process is required, it is possible to provide management information of the constraints to minimize the impact of the change. Furthermore, the management information of the constraints is updated in real time using the work process progress information as an input. When a process change or measures related to the constraints are required, it is possible to extract the relevant constraints, work management units, and the extent of the impact, thereby supporting the user's decision-making. [Brief description of the drawings]

[0011] [Figure 1] 1 is a functional block diagram of a work management support device according to an embodiment; [Diagram 2] FIG. 2 is a hardware configuration diagram of the work management support device. [Diagram 3] 13 is a flowchart showing a constraint condition analysis process. [Figure 4] 13 is a flowchart showing a constraint condition monitoring process. [Diagram 5] 13 is a flowchart showing a change impact analysis process. [Figure 6] FIG. 13 is a diagram showing an example of a constraint condition display screen for a task management unit. [Figure 7] FIG. 13 is a diagram showing an example of a constraint condition detail display screen for a task management unit. [Figure 8] FIG. 13 is a diagram showing an example of a work area constraint display screen for a work management unit. [Figure 9] 13 is a flowchart showing a constraint condition management process based on performance information of a task management unit. [Figure 10] 13 is a flowchart showing a process for considering a change in a process due to a work delay. [Figure 11]13 is a flowchart showing a process for considering a change in a process due to an excess of a radiation exposure dose in a planned process. [Figure 12] 13 is a flowchart showing a process change consideration process due to a change in a planned process or an addition of a work management unit. [Figure 13] FIG. 13 is a diagram illustrating management of work time margin. [Figure 14] FIG. 13 is a diagram showing a gap analysis summary table. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, the control items assigned to a work order (WO) are called constraints, and the control items that determine the feasibility of a planned process are called critical constraints. In this embodiment, the margin of a constraint is treated as a quantitative difference between the limit value of each control item and the planned value or actual value.

[0013] FIG. 1 is a functional block diagram of a work management support device 1 according to an embodiment. 1 includes a processing unit 10, an analysis result storage unit 14, and an output unit 15. The work management support device 1 supports the management of work related to a maintenance plan for a nuclear power plant.

[0014] The processing unit 10 analyzes and monitors each piece of input information, and records the analyzed or monitored output information in the analysis result storage unit 14. The processing unit 10 then visualizes the analyzed or monitored output information and displays it to the user. The processing unit 10 includes a constraint condition analysis unit 11, a constraint condition monitoring unit 12, and a change impact analysis unit 13.

[0015] The output unit 15 links the output information analyzed or monitored by the processing unit 10 to the process management system 3 used by the process manager, the work manager, etc. The output unit 15 permits output only of information that is given viewing authority by the nuclear plant information manager in terms of nuclear security.

[0016] The constraint condition analysis unit 11 refers to the process management database 21 and analyzes the constraint conditions for each work management unit (WO) from the work process plan information, interference from consecutive or congested work management units, and the tolerance of the constraint conditions for each work management unit. The constraint condition analysis unit 11 evaluates the feasibility of work between consecutive or congested work management units from the tolerance of the constraint conditions for the work management units.

[0017] The constraint condition monitoring unit 12 refers to the work progress management database 22, analyzes the gap between the plan and the results for each constraint condition item from the work progress and results information, and compares the margins to determine the need for process changes. The constraint condition monitoring unit 12 assigns any one of the following constraint conditions to each work management unit as a constraint condition: exposure dose, work area, hazard management, and work time. If it is determined that the constraint condition management parameters have deviated from the plan, it determines whether the planned process needs to be changed based on the constraint condition margin. If there is a possibility that the constraint condition management parameters may deviate from the plan, the constraint condition monitoring unit 12 notifies the user of this fact. This makes it possible to confirm that when the parameters of the control items that are the constraints for the periodic inspection work of the nuclear power plant deviate from the plan, the planned process is not affected due to the margin of the constraints.

[0018] Furthermore, the constraint condition monitoring unit 12 receives as input the task management unit, the resource information assigned to this task management unit, the task time information required for the task management unit, the margin information for the task time information, and the constraint conditions of the task management unit, extracts a series of task management units whose task times can be managed collectively, and sets new task time management information required for the series of task management units. This makes it possible to support the user's decision-making by extracting the relevant constraint conditions, task management unit, and the scope of impact when a process change or a measure related to the constraint is required as necessary.

[0019] When the constraint condition monitoring unit 12 confirms a delay from the planned process of any of the work management units, the constraint condition analysis unit 11 judges whether the delay can be absorbed by the margin from the extent of the impact of the delay and the work time management information of the work management unit. This makes it possible to extract the relevant constraint conditions, work management units and the extent of impact when a process change or a measure related to a constraint is required as necessary, and to support the user's decision-making.

[0020] When the constraint condition monitoring unit 12 confirms that the actual exposure dose is higher than the exposure dose in the planned process of any of the work management units, the constraint condition analysis unit 11 judges whether the planned work can be continued without deviating from the exposure dose constraints during the planned work period based on the impact range of the increase in exposure dose in the planned process and the management information of the individual exposure dose of the workers. As a result, if a process change or measures related to the constraints are required as necessary, the corresponding constraint conditions, work management units and impact ranges can be extracted to support the user's decision-making.

[0021] The change impact analysis unit 13 refers to the cost information database 23 and analyzes the impact on each constraint condition and the increase or decrease in implementation cost when the planned process is changed from the change information related to the constraint condition and the cost information. The analyzed impact on each constraint condition and the increase or decrease in implementation cost are output by the output unit 15. This makes it possible to present information for judging whether the plan change is appropriate to the user.

[0022] FIG. 2 is a configuration diagram of the work management support device 1. The work management support device 1 is a computer including a CPU (Central Processing Unit) 51, a ROM (Read Only Memory) 52, and a RAM (Random Access Memory) 53.

[0023] The CPU 51 is a central processing unit that executes a program and accesses data stored in the ROM 52 or the RAM 53 to realize each functional unit. The ROM 52 is a non-volatile read-only memory, and stores various data, a BIOS (Basic I / O System), etc. The RAM 53 is a volatile readable / writable memory, and temporarily stores various data and programs.

[0024] The work management support device 1 further includes an input unit 54, a communication unit 55, a display unit 56, and a storage unit 57. The input unit 54 is, for example, a keyboard, a mouse, a touch panel, etc., and is a part where a user operates the task management support device 1 to input data.

[0025] The communication unit 55 is, for example, a network interface card, and is a part for communicating with other devices and the process control system 3 via a network. The display unit 56 is, for example, a liquid crystal display, and displays characters, figures, images, and the like.

[0026] The storage unit 57 is, for example, a hard disk drive or a solid state drive (SSD) that stores a relatively large amount of data and programs. The storage unit 57 stores the analysis result storage unit 14 and the work management support program 16.

[0027] The analysis result storage unit 14 stores the processing results of the processing unit 10 of FIG. When the CPU 51 executes the work management support program 16, functional units such as the processing unit 10 in FIG. 1 are realized.

[0028] FIG. 3 is a flowchart showing the constraint analysis process. The constraint condition analysis unit 11 inputs the planned work process and constraint conditions from the process management database 21 (step S10), and analyzes the constraint conditions of each work management unit (step S11). Thereafter, the constraint condition analysis unit 11 analyzes the interference relationship of the work management units, that is, the impact of the constraint conditions of each work management unit on the consecutive or congested work management units (step S12). The constraint condition analysis unit 11 analyzes the margin of each constraint condition (step S13) and assigns it to each work management unit. Then, the constraint condition analysis unit 11 outputs the analysis result and displays it to the user, and stores the analysis result in the analysis result storage unit 14 (step S14), and the processing of FIG. 2 ends.

[0029] The constraint condition analysis unit 11 may provide attribute information to the constraint conditions, comprehensively extract related items of each constraint condition from the planned process information, and calculate the margin, or may use machine learning or other methods. A manager or worker may set the margin based on the planned value of the work management unit. The constraint condition analysis unit 11 may calculate the margin for constraint conditions such as work time using a formula from the actual results based on the allocated resources, etc.

[0030] FIG. 4 is a flowchart showing the constraint condition monitoring process. The constraint condition monitoring unit 12 inputs the work process progress and performance information with reference to the work progress management database 22 (step S20). Then, the constraint condition monitoring unit 12 extracts the progress status of the planned process and performance information for the management items from the work progress management or the information input by the user (step S21).

[0031] Next, the constraint condition monitoring unit 12 performs a gap analysis between each constraint condition item and the actual results (step S22). The constraint condition monitoring unit 12 judges whether the constraint condition management items deviate from the plan from the gap analysis, and if there is a deviation, judges whether it deviates from the margin of the planned process. As a result, the constraint condition monitoring unit 12 judges the necessity of a process change (step S23). The constraint condition monitoring unit 12 outputs the gap analysis result and the judgment result of the necessity of the process change and displays them to the user, and stores them in the analysis result storage unit 14 (step S24), and the processing of FIG. 4 ends.

[0032] FIG. 5 is a flowchart showing the change impact analysis process. When deviation from the constraint conditions requires a change to the process, the user or system inputs information on the changed planned process (step S30). When taking measures to comply with the constraint conditions, the user or system inputs information on the addition or change of work management units and cost information due to the changes (step S31). The change impact analysis unit 13 evaluates the increase or decrease in cost after the change (step S32). The change impact analysis unit 13 then causes the constraint condition analysis unit 11 to perform a constraint condition analysis using the changed process and work management unit constraint conditions (step S33). The change impact analysis unit 13 outputs the cost increase or decrease information and the analysis results of the changed plan and displays them to the user, and stores them in the analysis result storage unit 14 (step S34), at which point the processing of FIG. 5 ends.

[0033] FIG. 6 is a diagram showing a constraint condition display screen 40 for a task management unit. The constraint display screen 40 in Fig. 6 shows an example of the display of the task ID, task name, task content, and constraint information for each task management unit. Here, the constraints attached to the task management unit are displayed as icons. In this way, the constraints attached to the task management unit in charge of the worker or manager are visualized so that they can be easily recognized, and constraints with little margin or critical constraints are highlighted to prevent deviation from the constraints.

[0034] FIG. 7 is a diagram showing a constraint detail display screen 41 for a task management unit. 7, the details of each constraint condition assigned to the work management unit are described. The constraint condition details display screen 41 also displays the details of each constraint condition and its margin for each work management unit.

[0035] FIG. 8 is a diagram showing a work area constraint display screen 42 for a work management unit. The work area constraint display screen 42 in Fig. 8 includes a work area information pane 43 that shows information about the work area, and a work area constraint pane 44 that displays the work area constraints for the work management unit. The work area constraint pane 44 shows the designation of the work area and restrictions on the access route to the work area. Here, most of area D is a separate WO work area. Therefore, the route selected for the route from the preparation building to the work area of ​​area A is the route from area C via area B to area A. The work area information pane 43 displays the constraint for area A, "Access route designated: Yes".

[0036] As a way of thinking about the tolerance for the constraint conditions, in this embodiment, the work time tolerance, which is the tolerance for the time constraints of the work, is the difference between the planned process time and the expected actual work time. The radiation exposure dose tolerance, which is the tolerance for the control limit of the worker's radiation exposure dose, is the difference between the control limit of the worker's radiation exposure dose and the sum of the actual radiation exposure dose and the planned future radiation exposure dose. The fire load tolerance, which is the tolerance for the control limit of the fire load, which is an example of hazard control, is the difference between the control limit amount that tools and materials related to the fire load can be brought into the target work area and the actual amount brought in. Hazard events are assumed to be external events such as earthquakes, tsunamis, tornadoes, and volcanic eruptions, and internal events such as flooding and fires.

[0037] The margin for the area constraint of a task may be set to a section within the area that is not used during the execution of the target task. Alternatively, no margin may be set and only the used area of ​​the area may be used as a constraint.

[0038] 9 is a flow chart showing the constraint condition management process based on the performance information of the work management unit. The constraint condition analysis unit 11 performs a gap analysis of each constraint condition item based on the progress of the work process and the performance information of the work management unit (step S50). The constraint condition management process performs a gap analysis between the plan and the performance, extracts real-time management information for each constraint condition, and analyzes the difference between the plan and the performance.

[0039] The work management support device 1 receives, as input information, information on the progress of work processes and information on results from a work progress management database 22 that manages the progress of work processes or a process manager. The constraint condition monitoring unit 12 extracts progress status of the process and results information of constraint condition management from the input information, and performs a gap analysis between the information at the planning stage and the results information. Examples of each constraint condition include time constraints such as being early or late compared to the plan, items that are managed by accumulating against restrictions such as radiation exposure dose, and constraints that are managed in real time so as not to exceed upper limits such as fire load. For this reason, when a change occurs in the plan related to an item managed as a constraint condition, the impact of each constraint condition gap on the margin varies.

[0040] After the gap analysis, the constraint condition monitoring unit 12 qualitatively and quantitatively organizes each gap (step S51), and judges whether the gap needs to be adjusted based on the analysis and organization results (step S52). If the gap analysis shows that all gaps are managed within the range of the plan, it judges that the gap adjustment is not necessary (No), ends the process of FIG. 9, and continues monitoring. If the gap analysis shows that any gap deviates from the range of the plan, the constraint condition monitoring unit 12 determines that the gap needs to be adjusted (Yes), and proceeds to step S53.

[0041] In step S53, the constraint condition monitoring unit 12 judges whether or not all gaps are within the range of the preset tolerance. If all gaps are being managed within the range of the preset tolerance (Yes), the constraint condition monitoring unit 12 displays the details of the work management unit to be adjusted to the user (step S55). Furthermore, the constraint condition monitoring unit 12 adjusts the margin of deviation of the displayed constraint condition from the plan and displays the result to the user (step S56). Thereafter, the process of FIG. 9 ends the change to the work management unit and moves to continuous monitoring.

[0042] If the gap analysis shows that any gaps deviate from the planned range and exceed the pre-defined margin (No), a recovery plan is required, such as implementing measures to maintain the constraints and changing the planned process. Therefore, the process proceeds to step S54, where changes are considered. These recovery plans must be considered taking into account the type and number of constraints that have deviated and the size of the gaps.

[0043] Here, consider the gap in the start times of a series of tasks. For example, if it becomes possible to start a task earlier, consider the merits of starting earlier. Possible questions include whether starting a task earlier will lead to a shortening of the overall process, whether it will leave room for the later process, or whether the resource should be temporarily diverted to another task. To allow for these considerations and decisions, the task management support device 1 provides the user with information on the extent of the impact on the constraint conditions of each task when the task is brought forward, and information on the overall impact on the process.

[0044] FIG. 10 is a flowchart showing a process for considering a change in a process due to a work delay. When the constraint condition monitoring unit 12 confirms a delay in the actual results relative to the plan (step S60), the process of FIG. 10 starts. The constraint condition monitoring unit 12 judges whether the delay of the actual result against the plan exceeds the total time margin that can be adjusted in the subsequent process (step S61). If the delay of the actual result against the plan is adjustable within the margin (Yes), the constraint condition monitoring unit 12 absorbs the delay without changing the entire process by reducing the work time margin of the subsequent process.

[0045] If the delay in the actual results relative to the plan cannot be adjusted within the margin of the post-process work time (No), the manager must consider changing the planned process or changing the work management unit to shorten the work time (recovery plan) (step S62). If multiple recovery plans are possible, a cost comparison is made for each recovery plan. The cost of changing the process and extending the inspection period includes the loss of profit due to lost power generation opportunities and the cost of implementing measures to shorten work time.

[0046] In a recovery plan that includes a process change, it is necessary to consider the impact on the constraints of other work management units. Therefore, the constraint condition monitoring unit 12 analyzes the constraint conditions for the recovery plan (step S63) to determine the scope of the change so as not to deviate from the new constraint conditions. The same applies when process changes and process shortening measures are used together.

[0047] Thereafter, the constraint condition monitoring unit 12 examines the recovery plan and then evaluates and compares the costs resulting from each change (step S64). When the process manager selects a recovery plan to be implemented from the cost information in addition to the change information on the recovery plan and management constraint conditions, the process in FIG. 10 ends.

[0048] <<When radiation exposure doses during planned processes are exceeded>> FIG. 11 is a flowchart showing a process for considering a change in a process due to an excess of a radiation exposure dose in a planned process. When the constraint condition monitoring unit 12 confirms that a worker's exposure exceeds the plan in a certain work management unit (step S70), it checks whether the worker's exposure dose in the planned process exceeds the exposure tolerance (step S71). In this embodiment, the exposure tolerance is considered to be the tolerance for the control limit of the worker's exposure dose, and the difference obtained by subtracting the sum of the actual exposure dose and the future exposure dose in the plan from the control limit value of the worker's exposure dose is set to the exposure dose tolerance. In step S71, the constraint condition monitoring unit 12 judges whether the exposure dose received by the worker in this work management unit exceeds the exposure tolerance or exceeds the control limit of personal exposure dose in radiation management.

[0049] If the tolerance during the planned work period is not exceeded (No), the constraint condition monitoring unit 12 determines that there is no need to change the plan, changes (reduces) the exposure tolerance of the target worker, and ends the process. If the margin during the planned work period is exceeded (Yes), the manager considers a recovery plan (Step S72). Possible recovery plans include exposure reduction measures in later processes, changes to workers, and associated process changes. If multiple recovery plans for reducing worker exposure are possible, the change impact analysis unit 13 compares the costs of each recovery plan and selects one of the recovery plans (Step S73). Then, the change impact analysis unit 13 determines whether the selected recovery plan will result in a change to the process (Step S74).

[0050] If the selected recovery plan does not require any changes to the process (No), the manager implements measures to change (reduce) the radiation exposure dose in the planned process, adds a new work management unit or changes the content of the work management unit to implement the measures, and notifies each person in charge, which ends the processing in Figure 11.

[0051] If the selected recovery plan includes a process change (Yes), the change impact analysis unit 13 analyzes the constraint conditions of each work management unit (step S75) and determines whether the process is feasible (step S76). The change impact analysis unit 13 further changes the margin of each work management unit due to process fluctuations and displays the changes to the user. If the information from this process is required at the recovery plan consideration / selection stage, a constraint condition analysis is performed and detailed results are displayed to the user.

[0052] If the process feasibility is confirmed (step S76: Yes), the process plan is reflected in the recovery plan, and the changes in each work management unit are displayed to the user. The user implements the selected recovery plan (step S77), and the processing in FIG. 11 ends.

[0053] <When hazard control conditions are violated> As a hazard management condition, it is necessary to manage the capacity of temporary storage and installation in the management area against fire, flooding, and tornadoes. When the fire load control value is exceeded, this is usually due to changes in the planned process or additional work, which is thought to be the cause of congestion in the work management unit that involves the bringing in of materials, tools, and other items subject to fire load control in the management area.

[0054] The constraint condition monitoring unit 12 judges whether it is possible to deal with the problem by simply changing the work content in the work management unit, such as storing materials and tools in a separate area so as not to deviate from the fire load control value, and bringing them in each time they are used, so that the control value is not deviated from and the work is completed within the planned work time and margin. If it is possible, the manager changes the work content in the work management unit and notifies the responsible worker of the changes. If it is not possible, the manager considers recovery plans and compares costs. If the recovery plan includes process changes, the constraint condition analysis unit 11 analyzes whether the process is feasible based on the constraint conditions of each work management unit. The constraint condition analysis unit 11 further changes the margin of each work management unit due to process fluctuations and displays the changes to the user.

[0055] FIG. 12 is a flowchart showing a process change review process resulting from a change in the planned process or an addition of a work management unit. When the constraint condition monitoring unit 12 confirms a change to the planned process or the addition of a work management unit (step S80), it checks whether the change exceeds the margin for the planned work period (step S81). In this embodiment, the margin is considered to be the margin for the planned process, and the margin is the difference obtained by subtracting the sum of the actual value and the future value in the plan from the control limit value of the work management unit. In step S81, the constraint condition monitoring unit 12 determines whether the actual value exceeds the margin for the planned work period.

[0056] In step S81, if the margin during the planned work period is not exceeded (No), the constraint condition monitoring unit 12 determines that there is no need to change the plan, changes (reduces) the margin of the planned process, and ends the process. If the margin during the planned work period is exceeded (Yes), the manager considers a recovery plan (Step S82). Possible recovery plans include measures for later processes, changes to workers, and associated process changes. If multiple recovery plans are possible, the change impact analysis unit 13 compares the costs of each recovery plan and selects the most suitable recovery plan (Step S83). Then, the change impact analysis unit 13 determines, via the constraint condition analysis unit 11, whether or not the selected recovery plan will result in a change to the process (Step S84).

[0057] In step S84, if there are no changes to the process due to the selected recovery plan (No), the administrator implements measures to add a new work management unit or change the content of the work management unit, notifies each person in charge, and the processing in Figure 12 ends.

[0058] In step S84, if the selected recovery plan includes a process change (Yes), the change impact analysis unit 13 analyzes the constraint conditions of each work management unit (step S85) and determines whether the process is feasible (step S86). The change impact analysis unit 13 further changes the margin of each work management unit due to process fluctuations and displays the changes to the user. If the information from this process is necessary at the recovery plan consideration / selection stage, a constraint condition analysis is performed and detailed results are displayed to the user.

[0059] If the process feasibility is not confirmed in step S86 (No), the process returns to step S82. If the process feasibility is confirmed in step S86 (Yes), the manager changes the process plan to a recovery plan and displays the changes in each work management unit to the user. The manager implements the selected recovery plan (step S87) and ends the processing in FIG.

[0060] FIG. 13 is a diagram showing management of operation time margin. "XXX-01" to "XXX-03" are each work management units, and the constraints are time constraints, area constraints, fire load management restrictions, and worker exposure management restrictions. The expected work time is 8 hours, and the margin is 2 hours. "XXX-04" is a work management unit, and the constraints are time constraints, fire load management limits, and worker exposure management limits. The expected work time is 3 hours, and the margin is 1 hour.

[0061] Assume that the work management units "XXX-01" to "XXX-04" are consecutive tasks, with the same worker group, area, and fire load management conditions, and no interference with other work management units. In this case, the same resources are consecutively assigned to the work management units "XXX-01" to "XXX-03", so the work time in the planned process can be managed together between the work management units "XXX-01" to "XXX-03".

[0062] The estimated time of each task is 8h (8 hours) and the margin of 2h (2 hours) is combined to make the estimated time of these multiple task units 24h and the margin 6h, and delays that occur within this series of task management units can be absorbed within the margin of 6h. On the other hand, in "XXX-04", there is a resource constraint (test witnesses), and this task management unit must be started and completed within the planned process period. Task management units with such independent constraint conditions cannot be managed together as a series of task management units in terms of task time and its margin. When there is a possibility of deviation from the constraint conditions during the process, the task management support device 1 supports the process manager by making fine adjustments to the task management units and considering recovery plans based on this information.

[0063] FIG. 14 is a diagram showing the gap analysis arrangement table 61. As shown in FIG. The first row of the gap analysis summary table 61 stores a task ID. The second to fourth rows of the gap analysis arrangement table 61 store the planned work time, the actual work time, and the work time margin, respectively. The planned values ​​of each parameter are indicated by hatching.

[0064] In the fifth to eighth rows of the gap analysis arrangement table 61, the planned radiation exposure dose value and the actual values ​​of Mr. A, Mr. B, and Mr. C are stored. The ninth row of the gap analysis summary table 61 stores whether or not the fire load for hazard management is in compliance. The tenth row of the gap analysis arrangement table 61 stores a change in the work management unit.

[0065] It was discovered that the radiation exposure dose exceeded the planned value in the work management unit "XXX-01". A series of work on the same equipment continues after "XXX-01", and the total margin is 6 hours. Although the radiation exposure margin has not been exceeded, there is still time to spare, so the process manager decided to take measures by carrying out decontamination work, reducing the radiation exposure dose in the subsequent process and maintaining the margin. As a result of the constraint analysis and gap analysis, it is known that there is a total of 6 hours of work time margin in the work management units "XXX-01" to "XXX-03", so it is possible to quickly consider whether decontamination work can be added to the work management unit "XXX-02". Margin data is updated when actual data is acquired or when the work management unit is changed, and the latest information is displayed.

[0066] <<Variation>> The present invention is not limited to the above-described embodiment, and includes various modified examples. For example, the above-described embodiment has been described in detail to clearly explain the present invention, and is not necessarily limited to those having all of the configurations described. It is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, it is also possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

[0067] The above configurations, functions, processing units, processing means, etc. may be realized in part or in whole by hardware such as an integrated circuit. The above configurations, functions, etc. may be realized by software by a processor interpreting and executing a program that realizes each function. Information such as the program, table, file, etc. that realizes each function can be stored in a recording device such as a memory, a hard disk, or an SSD (Solid State Drive), or a recording medium such as a flash memory card or a DVD (Digital Versatile Disk).

[0068] In each embodiment, the control lines and information lines are those that are considered necessary for the explanation, and not all control lines and information lines in the product are necessarily shown. In reality, it may be considered that almost all components are connected to each other. As modified examples of the present invention, for example, the following (a) to (c) are available.

[0069] (a) The work management support device of the present invention is not limited to constructing maintenance plans for nuclear plants, but may be used to construct plans relating to any plant, system, or equipment, and is not limited thereto. (b) The tolerance of the present invention is not limited to the tolerance of the radiation exposure amount or the tolerance of the working time. (c) The plurality of recovery plans is not limited to being generated by the manager. The work management support device may generate a plurality of predetermined recovery plans, and is not limited to this.

[0070] Features of the present invention Characteristic features of the work management support device, the work management support method, and the work management support program of the present invention are listed in [1] to

[10] below.

[0071] [1] a constraint condition analysis unit (11) for evaluating feasibility of operations between successive work management units based on work management units constituting a plant maintenance plan and tolerances of constraint conditions assigned to the work management units; a constraint condition monitoring unit (12) for performing a gap analysis between the plan and the actual results of each of the constraint conditions assigned to the work management unit based on the work performance information, and comparing the margins; A work management support device (1) comprising:

[0072] According to the work management support device (1) of [1], when a parameter of a control item that is a constraint on a plant's regular inspection work deviates from a plan, it is possible to confirm that the planned process is not affected due to the margin of the constraint.

[0073] [2] The constraint condition monitoring unit (12) Any one of radiation exposure dose, work area, hazard management, and work time is assigned to the work management unit as the constraint condition, and when it is determined that the management parameters of the constraint conditions deviate from the plan, it is determined whether or not it is necessary to change the planned process based on the margin of the constraint condition. The work management support device (1) described in [1] is characterized by the above.

[0074] According to the work management support device (1) of [2], when a change in the planned process is required, it is possible to provide constraint condition management information for minimizing the impact of the change.

[0075] [3] The constraint condition monitoring unit (12) notifies a user when there is a possibility that the management parameters of the constraint conditions may deviate from the plan. The work management support device (1) described in [2] is characterized in that

[0076] According to the work management support device (1) of [3], when a change in the planned process is required, it is possible to provide constraint condition management information for minimizing the impact of the change.

[0077] [4] The constraint condition monitoring unit (12) A task management unit and resource information assigned to the task management unit, task time information required for the task management unit and margin information for the task time information, and constraint conditions for the task management unit are input to extract a series of task management units whose task times can be managed collectively, and new task time management information required for the series of task management units is set. The work management support device (1) described in [1] is characterized by the above.

[0078] According to the work management support device (1) in [4], when process changes or measures related to constraints are required, it is possible to extract the relevant constraint conditions, work management units, and the scope of impact, and support the user's decision-making.

[0079] [5] When the constraint condition monitoring unit (12) confirms a delay from the planned process of any of the work management units, The constraint condition analysis unit (11) judges whether the delay can be absorbed by the margin based on the range of influence of the delay and the work time management information of the work management unit. The work management support device (1) described in [1] is characterized by the above.

[0080] According to the work management support device (1) in [5], when a change in the planned process is required, it is possible to provide constraint condition management information to minimize the impact of the change. Furthermore, the work process progress information is input and the constraint condition management information is updated in real time.

[0081] [6] When the constraint condition monitoring unit (12) confirms that the actual exposure dose is higher than the exposure dose in the planned process of any one of the work management units, the constraint condition analysis unit (11) judges whether the planned work can be continued without deviating from the constraints of the radiation exposure dose during the planned work period based on the range of influence of the increase in radiation exposure dose in the planned process and the management information of the individual radiation exposure dose of the workers; The work management support device (1) described in [1] is characterized by the above.

[0082] According to the work management support device (1) in [6], when a change in the planned process is required, it is possible to provide constraint condition management information to minimize the impact of the change. Furthermore, the work process progress information is input and the constraint condition management information is updated in real time.

[0083] [7] When the constraint condition monitoring unit (12) confirms that there has been a change in the work management unit related to the area to which the hazard management constraint is applied, the constraint condition analysis unit (11) judges whether the planned work can be continued without deviating from the constraints of the hazard management during the planned work period based on the work management unit, area information assigned to the work management unit, the hazard management information, and the hazard management margin information; The work management support device (1) described in [1] is characterized by the above.

[0084] According to the work management support device (1) in [7], when a change in the planned process is required, it is possible to provide constraint condition management information to minimize the impact of the change. Furthermore, the work process progress information is input and the constraint condition management information is updated in real time.

[0085] [8] Further comprising a change impact analysis unit (13) for analyzing the impact on each of the constraint conditions and the increase or decrease in implementation costs when the planned process is changed based on the change information related to the constraint conditions and the cost information. The work management support device (1) described in [1] is characterized by the above.

[0086] According to the work management support device (1) in [8], when process changes or measures related to constraints are required, it is possible to extract the relevant constraint conditions, work management units, and the scope of impact, and to support the user's decision-making.

[0087] [9] a step in which a constraint analysis unit (11) evaluates feasibility of work between successive work management units based on the work management units constituting the plant maintenance plan and the tolerance of the constraint conditions assigned to the work management units; a constraint condition monitoring unit (12) performing a gap analysis between the plan and the actual results of each of the constraint conditions assigned to the work management unit based on the work performance information, and comparing the margins; A work management support method comprising:

[0088] According to the work management support method of [9], when the parameters of the control items that are the constraints of the plant's regular inspection work deviate from the plan, it is possible to confirm that the planned process is not affected due to the margin of the constraints.

[0089]

[10] To the computer: A procedure for evaluating feasibility of work between successive work management units based on the work management units constituting the plant maintenance plan and the constraints and tolerances assigned to the work management units; a step of performing a gap analysis between the plan and the actual results of each of the constraint conditions assigned to the work management unit based on the work performance information, and comparing the margins; (16) A work management support program for carrying out the above.

[0090] According to the work management support program (16) of

[10] , when the parameters of the control items that are the constraints of the plant outage work deviate from the plan, it is possible to confirm that the planned process is not affected due to the margin of the constraints. [Explanation of symbols]

[0091] 1 Work management support device 10 Processing section 11 Constraint analysis section 12 Constraint condition monitoring section 13 Change Impact Analysis Department 14 Analysis result storage section 15 Output section 21 Process Control Database 22 Work progress management database 23 Cost Information Database 3 Process control system 40 Constraint condition display screen 41 Constraint details display screen 42 Work area constraint display screen 43 Work Area Information Pane 44 Work Area Constraints Pane 61 Gap Analysis Organizing Table

Claims

1. a constraint condition analysis unit that evaluates feasibility of work between successive work management units based on work management units constituting a plant maintenance plan and tolerances of constraint conditions assigned to the work management units; a constraint condition monitoring unit that performs a gap analysis between the plan and the actual results of each of the constraint conditions assigned to the work management unit based on the work performance information and compares the margins; A work management support device comprising:

2. The constraint condition monitoring unit Any one of radiation exposure dose, work area, hazard management, and work time is assigned to the work management unit as the constraint condition, and when it is determined that the management parameters of the constraint conditions deviate from the plan, it is determined whether or not it is necessary to change the planned process based on the margin of the constraint condition.

2. The work management support device according to claim 1.

3. the constraint condition monitoring unit notifies a user when there is a possibility that a management parameter of the constraint condition may deviate from a plan; 3. The work management support device according to claim 2.

4. The constraint condition monitoring unit A task management unit and resource information assigned to the task management unit, task time information required for the task management unit and margin information for the task time information, and constraint conditions for the task management unit are input to extract a series of task management units whose task times can be managed collectively, and new task time management information required for the series of task management units is set.

2. The work management support device according to claim 1.

5. When the constraint condition monitoring unit confirms a delay from a planned process of any of the work management units, the constraint condition analysis unit determines whether the delay can be absorbed by a margin based on the extent of the influence of the delay and the work time management information of the work management unit; 2. The work management support device according to claim 1.

6. When the constraint condition monitoring unit confirms that the actual exposure dose is higher than the exposure dose in the planned process of any one of the work management units, the constraint condition analysis unit determines whether the planned work can be continued without deviating from the constraints on the radiation exposure dose during the planned work period based on the range of influence of the increase in radiation exposure dose in the planned process and management information on the individual radiation exposure dose of the workers; 2. The work management support device according to claim 1.

7. When the constraint condition monitoring unit confirms that there has been a change in the work management unit related to the area to which the hazard management constraint is applied, the constraint condition analysis unit determines whether the planned work can be continued without deviating from the constraints of the hazard management during the planned work period based on the work management unit, area information assigned to the work management unit, the hazard management information, and the hazard management margin information; 2. The work management support device according to claim 1.

8. a change impact analysis unit that analyzes the impact on each of the constraint conditions and the increase or decrease in implementation costs when the planned process is changed based on change information related to the constraint conditions and cost information; 2. The work management support device according to claim 1.

9. a constraint condition analysis unit evaluating feasibility of work between successive work management units based on the work management units constituting the plant maintenance plan and the tolerance of the constraint conditions assigned to the work management units; a constraint condition monitoring unit performing a gap analysis between the plan and the actual results of each of the constraint conditions assigned to the work management unit based on the work performance information, and comparing the margins; A work management support method comprising:

10. On the computer, A procedure for evaluating feasibility of work between successive work management units based on the work management units constituting the plant maintenance plan and the tolerance of the constraint conditions assigned to the work management units; a step of performing a gap analysis between the plan and the actual results of each of the constraint conditions assigned to the work management unit based on the work performance information, and comparing the margins; A work management support program for carrying out the above.

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