Large maintenance activity workload analysis and evaluation method

Abstract

The invention belongs to the technical field of nuclear power, and particularly relates to a large-scale maintenance activity workload analysis and evaluation method, which comprises the following steps of: 1, calculating the equivalent workload Zm of each work in a maintenance activity; 2, calculating the conversion workload Wm of each work in the maintenance activity; 3, calculating the daily workload Gk in the maintenance activity; step 4, calculating a daily workload sequence; step 5, daily workload analysis and evaluation; and step 6, daily workload adjustment. According to the method, reasonable state evaluation can be carried out on workloads of different professions, teams or workers in charge in large-scale maintenance activities of nuclear power enterprises, reasonable arrangement of manpower resources of the maintenance activities is facilitated, balance of the workers in charge, units and workloads is achieved, and efficient development of the maintenance activities is promoted.

Description

Technical Field

[0001] The present invention belongs to the field of nuclear power technology, and in particular relates to a method for analyzing and evaluating workload of large-scale maintenance activities. Background Art

[0002] To ensure the safe and reliable operation of a power plant, it is necessary to conduct a comprehensive inspection and maintenance of the equipment within the system after each fuel cycle. After the maintenance project is determined, a maintenance plan is generated based on the system's decommissioning and recommissioning requirements. The plan specifies the maintenance period for each system, and the duration of each task is determined based on the power plant's status changes and the maintenance sequence of each device within the system. Because these large-scale maintenance activities involve numerous systems and equipment, the work required requires the participation of a large number of personnel. Within the established timeframe, each unit or person in charge of a task is responsible for multiple different tasks. The project department that undertakes the work typically arranges the workload of personnel based on experience, lacking effective data support and evaluation criteria. This often leads to large differences in the workload of different units or persons in charge during the maintenance activity, an uneven workload distribution, and even the inability to complete some tasks within the scheduled timeframe. This affects the safety, quality, and progress of the overall maintenance activity, and reduces the economic efficiency of the power plant.

[0003] The current mainstream practice is to ensure that the workload of work leaders during maintenance activities does not exceed the limit by controlling the number of projects they are responsible for at the same time. However, differences in professions, equipment, and maintenance types lead to different workloads for each job. Therefore, it is not entirely convincing to characterize the workload of a unit or work group leader by the number of projects they are responsible for.

[0004] In addition, based on the extensive experience accumulated and relatively accurate calculations of nuclear power plants, standard working hour data for different types of work on different equipment have been formed. This data is currently only used in directly related economic calculations such as contract settlement, but its significance in reliable work organization and control has been ignored. Summary of the Invention

[0005] The purpose of the present invention is to provide a method for analyzing and evaluating the workload of large-scale maintenance activities. The method comprehensively utilizes the inherent effective information in the activity, combines the distribution of standard execution hours within the activity period, and considers the actual activity intensity coefficient for conversion, so as to realize the analysis of multiple workloads undertaken by different professions, teams or work leaders within the activity period. According to the evaluation indicators set by the method, a reasonable status evaluation is performed on the workload of different professions, teams or work leaders in large-scale maintenance activities of nuclear power enterprises. The data is conducive to the reasonable arrangement of human resources for maintenance activities, achieving a balance between work leaders, units and workload, and promoting the efficient development of maintenance activities.

[0006] The technical solution for achieving the purpose of the present invention is as follows:

[0007] A method for analyzing and evaluating workload of large-scale maintenance activities, the method comprising:

[0008] Step 1: Calculate the equivalent workload Z for each task in the maintenance activity m ;

[0009] Step 2: Calculate the equivalent workload W for each task in the maintenance activity m ;

[0010] Step 3: Calculate the daily workload G in maintenance activities k ;

[0011] Step 4: Calculate the daily workload sequence;

[0012] Step 5: Daily workload analysis and evaluation;

[0013] Step 6: Daily workload adjustment.

[0014] The step 1 comprises:

[0015] Step 1.1: Obtain the standard working hours for each maintenance activity m :Standard working hours t m Standard maintenance hours for this type of equipment as specified in the standard maintenance hours database;

[0016] Step 1.2: Calculate the duration d of each task in the maintenance activity dm :Duration of each task d dm The planned or actual completion time of the work fm The planned or actual start time of the work sm The difference between

[0017] Step 1.3: Calculate the equivalent workload Z for each task in the maintenance activity m : Equivalent workload Z for each task m The standard working hours t and working duration d of the work d ratio.

[0018] The converted workload W of each task in step 2 m is the work intensity coefficient a of the maintenance activity and the equivalent workload Z of the work m The product of .

[0019] The daily workload G in the maintenance activity in step 3 k The converted workload Z for each task m The cumulative value on that day.

[0020] The step 4 comprises:

[0021] Step 4.1. Calculate the daily workload sequence of the person in charge of the work:

[0022] The daily workload of a person in charge of maintenance activities is the work performed by the person in charge on the date d k and the corresponding daily workload G k sequence;

[0023] Step 4.2: Calculate the daily workload sequence of the work unit:

[0024] The daily workload of a work unit in maintenance activities is the work performed by the work unit on the date d k and the workload of the day G k sequence;

[0025] Step 4.3: Calculate the number of people in charge of daily work in the work unit:

[0026] The number of persons responsible for daily work in a work unit of maintenance activities is the number of days of work performed by the work unit. k The number of people who are in charge of the work of the work unit on that day k sequence.

[0027] The specific steps of step 5 are as follows: obtaining a workload determination index based on a set of work intensity ranges actually set for maintenance activities, calculating daily workloads based on intervals formed by the workload determination indexes, and analyzing and evaluating daily workloads; the daily workload analysis and evaluation results include low load, normal load, warning load, and overload.

[0028] The step 5 comprises:

[0029] Step 5.1: Obtain the workload determination index of the person in charge of the work:

[0030] The workload determination index of the work leader is the set of work intensity ranges {D1, D2, D3} set according to the actual maintenance activities;

[0031] Step 5.2: Analyze and evaluate the daily workload of the person in charge of the work:

[0032] According to the workload judgment index of the work leader, the daily workload sequence of the work leader dimension is evaluated. The workload sequence of the work leader on that day is judged as low load if it is in the range of [0, D1), normal load if it is in the range of [D1, D2), warning load if it is in the range of [D2, D3), and overload if it is in the range of [D3, +∞).

[0033] Step 5.3: Obtain the workload determination index of the work unit:

[0034] The workload determination index of a work unit is the workload determination index of the work leader and the number of work leaders who perform work in the work unit on that day. k The data set consisting of the product of {P k *D1,P k *D2,P k *D3};

[0035] Step 5.4: Analyze and evaluate the daily workload of the work unit:

[0036] According to the workload judgment index of the work unit, the workload of the work leader is evaluated for the daily workload sequence of the work unit dimension. The daily workload of the work unit is in the interval [0,P k *D1) is judged as low load, in the interval [P k *D1,P k *D2) is considered as normal load, and in the interval [P k *D2,P k *D3) is judged as a warning load, in the interval [P k *D3, +∞) is judged as overload.

[0037] The step 6 specifically includes: adaptively adjusting the work on the low-load, warning-load and overload days according to the daily workload analysis and evaluation results, and repeating steps 1-5 until the daily workload analysis and evaluation results are normal load.

[0038] The beneficial technical effects of the present invention are:

[0039] 1. The method of the present invention associates standard working hours data with each task, determines the standard maintenance working hours required for each task, schedules each task, determines the start and end times of the current task within the maintenance activity, and performs a weighted rolling summary of each task within a certain window of the maintenance activity by duration. The impact of the work intensity coefficient is considered when allocating each task based on the work intensity settings of the work group. Given the continuous work and autonomous allocation of tasks in maintenance activities, this method is well suited to this process, resulting in high accuracy.

[0040] 2. The method of the present invention comprehensively utilizes the inherent effective information in the activity, combines the distribution of standard execution hours within the activity period, and considers the actual activity intensity coefficient for conversion, so as to realize the analysis of the multiple workloads undertaken by different professions, teams or work leaders within the activity period. According to the evaluation indicators set by the method, a reasonable status evaluation is performed on the workload of different professions, teams or work leaders in large-scale maintenance activities of nuclear power enterprises. The data is conducive to the reasonable arrangement of human resources for maintenance activities, achieving a balance between work leaders, units and workload, and promoting the efficient implementation of maintenance activities. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to the embodiments.

[0042] The input benchmark data required for establishing the method of the present invention comes from the overhaul standard labor hour quota list. Several premises are explained as follows: the standard labor hour is a relatively accurate data on the number of work groups and execution labor hours summarized based on actual maintenance experience, and has a high degree of credibility; the labor hour data shows that a job requires 2 people to do it for 4 days, which does not mean that 4 people can complete it in 2 days. In the calculation of the method, unlimited increase in manpower will not produce a proportional effect; the duration of the maintenance activity plan scheduling should not be less than the standard execution labor hours.

[0043] The present invention provides a method for analyzing and evaluating the workload of large-scale maintenance activities, which specifically includes the following steps:

[0044] Step 1: Calculate the equivalent workload Z for each task in the maintenance activity m

[0045] Step 1.1: Obtain the standard working hours for each maintenance activity m

[0046] Standard working hours m Standard maintenance hours for this type of equipment as specified in the standard maintenance hours database;

[0047] Step 1.2: Calculate the duration d of each task in the maintenance activity dm

[0048] Duration of each task d dm The planned or actual completion time of the work fm The planned or actual start time of the work sm The difference, d dm =d fm -d sm ;

[0049] Step 1.3: Calculate the equivalent workload Z for each task in the maintenance activity m

[0050] Equivalent workload Z for each task m Standard working hours for this work m and work duration d dm The ratio of Z m =t m / d dm ;

[0051] Step 2: Calculate the equivalent workload W for each task in the maintenance activity m

[0052] The converted workload of each task W m is the work intensity coefficient a of the maintenance activity and the equivalent workload Z of the work m The product of W m =a*Z m ;

[0053] Step 3: Calculate the daily workload G in maintenance activities k

[0054] Daily workload G in maintenance activities k The converted workload W for each task m the cumulative value on that day;

[0055] Step 4: Calculate daily workload sequence

[0056] Step 4.1. Calculate the daily workload sequence of the person in charge of the work

[0057] The daily workload of a person in charge of maintenance activities is the work performed by the person in charge on the date d k and the corresponding daily workload G k sequence;

[0058] Step 4.2: Calculate the daily workload sequence of the work unit

[0059] The daily workload of a work unit in maintenance activities is the work performed by the work unit on the date d k and the workload of the day G k sequence;

[0060] Step 4.3: Calculate the number of people in charge of daily work in the work unit:

[0061] The number of persons responsible for daily work in a work unit of maintenance activities is the number of days of work performed by the work unit. k The number of people who are in charge of the work of the work unit on that day k sequence;

[0062] Step 5: Daily workload analysis and evaluation

[0063] Obtain workload determination indicators based on the actual work intensity range set for maintenance activities, calculate daily workloads based on intervals formed by workload determination indicators, and analyze and evaluate daily workloads; daily workload analysis and evaluation results include low load, normal load, warning load, and overload;

[0064] Step 5.1: Obtain workload determination indicators for the person in charge of the work

[0065] The workload determination index of the work leader is the set of work intensity ranges {D1, D2, D3} set according to the actual maintenance activities;

[0066] Step 5.2: Analyze and evaluate the daily workload of the person in charge

[0067] According to the workload judgment index of the work leader, the daily workload sequence of the work leader dimension is evaluated. The workload sequence of the work leader on that day is judged as low load if it is in the range of [0, D1), normal load if it is in the range of [D1, D2), warning load if it is in the range of [D2, D3), and overload if it is in the range of [D3, +∞).

[0068] Step 5.3: Obtain the workload determination index of the work unit

[0069] The workload determination index of a work unit is the workload determination index of the work leader and the number of work leaders who perform work in the work unit on that day. k The data set consisting of the product of {P k *D1,P k *D2,P k *D3};

[0070] Step 5.4: Analyze and evaluate the daily workload of the work unit

[0071] According to the workload judgment index of the work unit, the workload of the work leader is evaluated for the daily workload sequence of the work unit dimension. The daily workload of the work unit is in the interval [0,P k *D1) is judged as low load, in the interval [P k *D1,P k *D2) is considered as normal load, and in the range [P k *D2,P k *D3) is judged as a warning load, in the interval [P k *D3, +∞) is judged as overload;

[0072] Step 6: Daily Workload Adjustment

[0073] Based on the daily workload analysis and evaluation results, adaptively adjust the work on low-load, warning-load, and overload days, and repeat steps 1-5 until the daily workload analysis and evaluation results are normal load.

[0074] Example

[0075] Taking a certain large-scale maintenance activity of a certain enterprise as an example, the workload analysis and evaluation of the large-scale maintenance activity is carried out.

[0076] Given a company's large-scale maintenance activity, the work list consists of l items. Each task must include information such as the job code, work start time, work completion time, the name or number of the person in charge of the task, and the company where the person in charge works. For the mth task in the maintenance activity, its workload analysis and evaluation are as follows:

[0077] Step 1: Calculate the equivalent workload Z for each task in the maintenance activity m

[0078] Step 1.1: Obtain the standard working hours for each maintenance activity m

[0079] Standard maintenance hours for this type of equipment as specified in the standard maintenance hours database;

[0080] Step 1.2: Calculate the duration d of each task in the maintenance activity dm

[0081] For the mth task in the maintenance activity, its duration is d dm The planned or actual completion time of the work fm The planned or actual start time of the work sm The difference, d dm =d fm -d sm ;

[0082] Step 1.3: Calculate the equivalent workload Z for each task in the maintenance activity m

[0083] For the mth task in the maintenance activity, the equivalent workload Z m Standard working hours for this work m and work duration d dm The ratio of Z m =t m / d dm ;

[0084] Step 2: Calculate the equivalent workload W for each task in the maintenance activity m

[0085] For the mth task in the maintenance activity, the converted workload W m is the work intensity coefficient a of the maintenance activity and the equivalent workload Z of the work m The product of W m =a*Z m ;

[0086] Step 3: Calculate the daily workload G in maintenance activities k

[0087] Calculate the workload of each day during the maintenance activity period. The workload of the kth day in the maintenance activity is the workload of each task W m The cumulative value G on day k k

[0088]

[0089] Step 4: Calculate daily workload sequence

[0090] Step 4.1. Calculate the daily workload sequence of the person in charge of the work

[0091] For a work list that a person in charge of maintenance activities is responsible for performing, the daily workload of a person in charge of maintenance activities is the work date performed by the person in charge. k and the corresponding daily workload G k sequence;

[0092] From the maintenance activity start date d x To the maintenance activity end date d y The data set consisting of dates in the range and the workload of the work performed by the work leader on day k is:

[0093] ((d k ,G k ) |k＝1 ,(d k ,G k ) |k＝2 ,…,(d k ,G k ) |k＝n ) |工作负责人

[0094] Step 4.2: Calculate the daily workload sequence of the work unit

[0095] For a work list that a work unit is responsible for performing in a maintenance activity, the daily workload of a work unit in the maintenance activity is the work date performed by the work unit. k and the workload of the day G k sequence;

[0096] From the maintenance activity start date dx To the maintenance activity end date d y The data set consisting of dates in the range and the workload of the work performed by the work unit on day k is:

[0097] ((d k ,G k ) |k＝1 ,(d k ,G k ) |k＝2 ,…,(d k ,G k ) |k＝n ) |工作执行单位

[0098] Step 4.3: Calculate the number of people in charge of daily work in the work unit

[0099] From the maintenance activity start date d x To the maintenance activity end date d y The number of dates in the range and the number of work leaders who perform work in the work unit on day k is P k The data set is composed of:

[0100] ((d k ,P k ) |k＝1 ,(d k ,P k ) |k＝2 ,…,(d k ,P k ) |k＝n ) |工作执行单位

[0101] Step 5: Daily workload analysis and evaluation

[0102] The workload determination index is obtained based on the work intensity range set actually set for the maintenance activities. The daily workload is calculated based on the interval formed by the workload determination index. The daily workload is analyzed and evaluated. The daily workload analysis and evaluation results include low load, normal load, warning load, and overload.

[0103] Step 5.1: Obtain workload determination indicators for the person in charge of the work

[0104] The workload determination index of the work leader is the set of work intensity ranges {D1, D2, D3} set according to the actual maintenance activities;

[0105] Step 5.2: Analyze and evaluate the daily workload of the person in charge

[0106] According to the workload judgment index of the work leader, the daily workload sequence of the work leader dimension is evaluated. For the workload of the kth day, the workload sequence of the work leader on that day is judged as low load if it is in the range of [0, D1), normal load if it is in the range of [D1, D2), warning load if it is in the range of [D2, D3), and overload if it is in the range of [D3, +∞).

[0107] Step 5.3: Obtain the workload determination index of the work unit

[0108] The workload determination index of a work unit is the workload determination index of the work leader and the number of work leaders who perform work in the work unit on the kth day P k The data set consisting of the product of {P k *D1,P k *D2,P k *D3};

[0109] The workload determination indicator sequence of the work unit is:

[0110] (({P k *D1,P k *D2,P k *D3}) |k＝1 ,({P k *D1,P k *D2,P k

[0111] *D3}) |k＝2 ,…,({P k *D1,P k *D2,P k *D3}) |k＝n )

[0112] Step 5.4: Analyze and evaluate the daily workload of the work unit

[0113] According to the workload judgment index of the work unit, the workload of the work person in charge is evaluated for the daily workload sequence of the work execution unit dimension. For the workload of the kth day, in the interval [0,P k *D1) is judged as low load, in the interval [P k *D1,P k *D2) is considered as normal load, and in the range [P k *D2,P k *D3) is judged as a warning load, in the interval [P k *D3, +∞) is judged as overload;

[0114] Step 6: Daily Workload Adjustment

[0115] Based on the daily workload analysis and evaluation results, adaptively adjust the work on low-load, warning-load, and overload days, and repeat steps 1-5 until the daily workload analysis and evaluation results are normal load.

[0116] The present invention has been described in detail above with reference to the embodiments. However, the present invention is not limited to the embodiments described above. Various modifications can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Any content not described in detail in the present invention may be adapted from existing technologies.

Claims

1. A method for analyzing and evaluating workload of large-scale maintenance activities, characterized in that: The method comprises: Step 1: Calculate the equivalent workload Z for each task in the maintenance activity m ; Step 2: Calculate the equivalent workload W for each task in the maintenance activity m ; Step 3: Calculate the daily workload G in maintenance activities k ; Step 4: Calculate the daily workload sequence; Step 5: Daily workload analysis and evaluation; Step 6: Daily workload adjustment.

2. A method for analyzing and evaluating workload of large-scale maintenance activities according to claim 1, characterized in that: The step 1 comprises: Step 1.1: Obtain the standard working hours for each maintenance activity m :Standard working hours t m Standard maintenance hours for this type of equipment as specified in the standard maintenance hours database; Step 1.2: Calculate the duration d of each task in the maintenance activity dm :Duration of each task d dm The planned or actual completion time of the work fm The planned or actual start time of the work sm The difference between Step 1.3: Calculate the equivalent workload Z for each task in the maintenance activity m : Equivalent workload Z for each task m The standard working hours t and working duration d of the work d ratio.

3. A method for analyzing and evaluating workload of large-scale maintenance activities according to claim 2, characterized in that: The converted workload W of each task in step 2 m is the work intensity coefficient a of the maintenance activity and the equivalent workload Z of the work m The product of .

4. A method for analyzing and evaluating workload of large-scale maintenance activities according to claim 3, characterized in that: The daily workload G in the maintenance activity in step 3 k The converted workload W for each task m The cumulative value on that day.

5. A method for analyzing and evaluating workload of large-scale maintenance activities according to claim 4, characterized in that: The step 4 comprises: Step 4.

1. Calculate the daily workload sequence of the person in charge of the work: The daily workload of a person in charge of maintenance activities is the work performed by the person in charge on the date d k and the corresponding daily workload G k sequence; Step 4.2: Calculate the daily workload sequence of the work unit: The daily workload of a work unit in maintenance activities is the work performed by the work unit on the date d k and the workload of the day G k sequence; Step 4.3: Calculate the number of people in charge of daily work in the work unit: The number of persons responsible for daily work in a work unit of maintenance activities is the number of days of work performed by the work unit. k The number of people who are in charge of the work of the work unit on that day k sequence.

6. A method for analyzing and evaluating workload of large-scale maintenance activities according to claim 5, characterized in that: The step 5 is specifically as follows: obtaining a workload determination index based on the work intensity range set actually set for the maintenance activity, calculating the daily workload based on the interval formed by the workload determination index, and analyzing and evaluating the daily workload; the daily workload analysis and evaluation results include low load, normal load, warning load, and overload.

7. A method for analyzing and evaluating workload of large-scale maintenance activities according to claim 5, characterized in that: The step 5 comprises: Step 5.1: Obtain the workload determination index of the person in charge of the work: The workload determination index of the work leader is the set of work intensity ranges {D1, D2, D3} set according to the actual maintenance activities; Step 5.2: Analyze and evaluate the daily workload of the person in charge of the work: According to the workload judgment index of the work leader, the daily workload sequence of the work leader dimension is evaluated. The workload sequence of the work leader on that day is judged as low load if it is in the range of [0, D1), normal load if it is in the range of [D1, D2), warning load if it is in the range of [D2, D3), and overload if it is in the range of [D3, +∞). Step 5.3: Obtain the workload determination index of the work unit: The workload determination index of a work unit is the workload determination index of the work leader and the number of work leaders who perform work in the work unit on that day. k The data set consisting of the product of {P k *D1,P k *D2,P k *D3}; Step 5.4: Analyze and evaluate the daily workload of the work unit: According to the workload judgment index of the work unit, the workload of the work leader is evaluated for the daily workload sequence of the work unit dimension. The daily workload of the work unit is in the interval [0,P k *D1) is judged as low load, in the interval [P k *D1,P k *D2) is considered as normal load, and in the interval [P k *D2,P k *D3) is judged as a warning load, in the interval [P k *D3, +∞) is judged as overload.

8. A method for analyzing and evaluating workload of large-scale maintenance activities according to claim 7, characterized in that: The step 6 specifically includes: adaptively adjusting the work on the low-load, warning-load and overload days according to the daily workload analysis and evaluation results, and repeating steps 1-5 until the daily workload analysis and evaluation results are normal load.

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