KR20140055100A - System and method for operating risk evaluation according to maintenance plan of nuclear power plant - Google Patents

Abstract

The present invention relates to an operating system and a method for risk evaluation according to a maintenance plan of a nuclear power plant, and provides a system and a method for operating a risk evaluation system contributing to a secure operation of a nuclear power plant by predicting and evaluating a risk according to an equipment test or maintenance made or conducted periodically or intermittently in a nuclear power plant. According to the present invention, work schedule information is determined and generated according to a degree of evaluated risk, and changes are reflected based on results of reviewing a basic work schedule including discrepancies between previously devised plan received from a person in charge of a work plan and a comprehensive regular/periodic examination manager and work schedule information and contents to be changed, thus quickly check a changed work schedule.

Description

TECHNICAL FIELD [0001] The present invention relates to an operating system and a method for evaluating a risk according to a maintenance plan of a nuclear power plant,

The present invention relates to an operating system and method for risk assessment, and more particularly, to a system and method for risk assessment, in which nuclear power plants can periodically or intermittently cause equipment testing or maintenance, To a system and method for operating a contributing risk assessment system

For the safe operation of a nuclear power plant, all structures, systems and equipment constituting a nuclear power plant must function properly in design. In particular, the maintenance of safety-related equipment and important non-safety equipment related to performing safety functions is more important. These major facilities may affect the safety of nuclear power plants. In order to ensure safe operation of nuclear power plants, an optimal maintenance plan for major facilities should be established and maintained.

Risk assessment of nuclear power plants by maintenance is possible through Probabilistic Safety Assessment (PSA).

PSA is a tool that comprehensively assesses the safety of nuclear power plants and is widely used worldwide to derive safety indicators for optimizing overall operation and management of power plants. Risk ratings of nuclear power plants that can be assessed through PSA include core damage frequency and early mass release frequency.

In relation to the risk assessment system of nuclear power plants, the 'comparison of major accident risk of light-water reactor type and small and medium-sized nuclear power plants' (hereinafter referred to as 'precedent literature') and others are filed and disclosed. According to the prior literature, a method for evaluating a risk during a fatal accident of a nuclear power plant has been disclosed. As in the prior art, in the past, the risk was evaluated using a PSA model and a PSA quantification program to evaluate the risk.

However, there is currently no system for operating such a nuclear power plant risk assessment system.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a risk evaluation system that contributes to the safe operation of a nuclear power plant by predicting and evaluating risks of equipment tests or maintenance that can occur periodically or intermittently in a nuclear power plant The present invention provides a system and a method for providing the same.

In order to accomplish the above object, the present invention relates to an operating system for risk assessment according to a maintenance plan of a nuclear power plant, and in accordance with a control signal of a maintenance plan operator terminal, A plan management unit for reflecting the operation arrangement state and managing and displaying maintenance plan information for all operations to be performed; An unavailability determination unit for determining, based on a control signal from the maintenance plan operator terminal, whether the operation target device and the isolation device are risk evaluation target devices and whether the device is a device causing an unavailability; Wherein the risk assessment device is a device that is a risk evaluation target device and is incapable of using the equipment as a result of the determination by the usability determination device, based on the risk assessment information and the requirement information of the maintenance department, A work schedule establishing unit for establishing and generating work schedule information for the risk evaluation target device; A risk evaluation unit for evaluating a risk based on work schedule information and work related information established through the work schedule establishing unit according to a control signal of the maintenance plan operator terminal; A risk classifying unit for classifying the degree of risk by confirming the degree of risk evaluated through the risk evaluating unit; Information on measures for reducing risk and minimizing unavailability time is sent and received to and from the development management server according to the evaluated risk level, and the schedule schedule information is generated and transmitted to the task scheduling person terminal and the periodicity test general administrator terminal Planning manager; The result of review of the basic work schedule including the inconsistency between the maintenance plan established from the work plan person terminal and the maintenance / periodic integrated manager terminal, the work schedule information received through the action plan management unit, A review result receiving unit for receiving the review result; And a change reflector for changing and recreating the work schedule information based on the review results received from the work planner terminal and the periodic / periodic test general manager terminal. .

The present invention relates to a method for operating a risk assessment according to a maintenance plan of a nuclear power plant, the method comprising the steps of: (a) according to a control signal of a maintenance planner terminal, Displaying maintenance plan information for all tasks to be performed, reflecting the information and driving arrangement status; (b) determining whether or not the operation target device and the isolation device are risk evaluation target devices and causing the inability to use according to the control signal of the maintenance planner terminal; (c) If the device is a device subject to risk evaluation as a result of the determination in the step (b) and causes the device to be unavailable, the work schedule establishing unit, based on the control signal of the maintenance plan operator terminal, Establishing and creating work schedule information for the risk evaluation target device based on the requirement information; (d) evaluating the risk based on the work schedule information and the work related information established through the step (c) according to the control signal of the risk assessing unit maintenance plan operator terminal; (e) confirming the degree of risk assessed through the step (d) by the risk classifying unit, classifying the degree of risk to a degree of risk from a first degree to a third degree, and determining whether the degree is a first degree (yellow, Yellow); (f) If the result of the determination in step (e) indicates that the first degree (yellow, yellow), the action plan management unit issues a request order regarding a risk reduction plan and a method of minimizing the unavailability time in accordance with a control signal of the maintenance plan person terminal To the power generation management server, receiving creation information according to the request order from the power generation management server, and storing the generated information; (g) the action plan management unit confirms and generates work schedule information according to a control signal of the maintenance plan person terminal, and transmits the work schedule information to the task planner terminal and the static / periodic test general manager terminal; (h) As a result of the review, it is determined that the reception unit includes the inconsistency between the maintenance schedule established from the task planner terminal and the static / periodic test general manager terminal, the basic job schedule information received through the action plan management unit, Receiving a review result of the basic work schedule; And (i) changing and recreating the work schedule information based on a review result received from the job plan person terminal and the period / period test general administrator terminal based on the change information; .

According to the present invention as described above, work schedule information is definitively generated according to the evaluated risk level, and inconsistencies between the already-established maintenance plan received from the job plan manager and the general / periodic test general manager, The changed work schedule can be confirmed quickly by reflecting the change based on the result of the review of the basic work schedule including the schedule of the change in the future.

FIG. 1 is an overall view conceptually showing an operating system for risk assessment according to a maintenance plan of a nuclear power plant according to an embodiment of the present invention; FIG.
FIG. 2 is an example showing a basic form in which a risk reduction plan prepared according to a request order according to an embodiment of the present invention, a method of minimizing an unavailable time, and the like are created.
3 is an overall flowchart of an operation method for risk assessment according to a maintenance plan of a nuclear power plant according to an embodiment of the present invention.

Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. It is to be noted that the detailed description of known functions and constructions related to the present invention is omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

An operation system for risk assessment according to a maintenance plan of a nuclear power plant according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

FIG. 1 is a block diagram conceptually showing an operating system S for risk assessment according to a maintenance plan of a nuclear power plant according to an embodiment of the present invention. As shown in FIG. 1, the plan management unit 100, The risk assessment unit 400, the risk classification unit 500, the action plan management unit 600, the review result receiving unit 700, the change information reflecting unit 800, and the uploading / (900).

The plan management unit 100 reflects the maintenance progress information and the operation sequence status up to the present in the schedule of the corresponding unit of the nuclear power plant according to the control signal of the maintenance plan manager terminal 10 and outputs the maintenance plan information for all operations to be performed Management and display.

In this embodiment, the work to be performed is a work to be performed next week, which includes a new work, a work that runs continuously from this week to the next week, and a work that has been postponed until the next week in the past or this week, The new work includes PM regular preventative maintenance by work order, and regular / cycle test.

In accordance with the control signal from the maintenance planner terminal 10, the unavailability determination unit 200 determines whether the operation target apparatus and the isolation apparatus are risk evaluation target apparatuses and whether or not the apparatus is a device causing the unavailability.

As a result of the determination, when the device is a device subject to risk evaluation and causes incapability of use, the work schedule establishing unit 300 generates information on the risk evaluation and requirements of the maintenance department Based on the information, work schedule information for the risk evaluation target device is established and generated.

At this time, the information on the risk evaluation includes information on the devices that cause the inability to use the evaluation target devices, the unavailability of the evaluation target devices that require continuous operation until next week, and the anticipated replacement operation arrangement of the rotating equipment next week .

On the other hand, if it is determined that the device is not a device to be subjected to risk evaluation, or is not a device to be evaluated or a device that can not be used, the work schedule establishing unit 300 transmits a determination result signal to the maintenance managing department server 20 do. Accordingly, the maintenance supervising department can perform the maintenance work according to the maintenance plan information established by itself.

The risk evaluating unit 400 evaluates the risk based on the work schedule information and work related information established through the work schedule establishing unit 300 in accordance with the control signal of the maintenance plan manager terminal 10. [

The risk classifying unit 500 identifies the degree of risk evaluated through the risk evaluating unit 400, and classifies the degree of risk into the degree from the first degree to the third degree. At this time, the degree of risk may be classified by color as shown in [Table 1].

Risk color Based on risk color Green CDF <2 x CDF _{Zero Maint.} Or LERF <2 x LERF _{Zero Maint.} Yellow (Yellow) CDF > 2 x CDF _{Zero Maint.} Or LERF > 2 x LERF _{Zero Maint.} Orange CDF > 10 x CDF _{Zero Maint.} Or LERF > 10 x LERF _{Zero Maint.} Red (Red) CDF > 20 x CDF _{Zero Maint.} Or LERF > 20 x LERF _{Zero Maint.}

For reference, the risk color criterion for the nuclear damage frequency (CDF) and the early mass emission frequency (LERF), which is the risk scale of a nuclear power plant, refers to the annual CDF / LERF when there is no failure or maintenance, / LERF.

The action plan manager 600 transmits and receives information on a risk reduction plan and a method of minimizing the inactivity time to the development management server 30 according to the assessed risk level, confirms and generates work schedule information, ) And the period / period test general manager terminal 50.

Specifically, when the classification result of the risk classification unit 500 is classified into the first degree (yellow, yellow), the action plan management unit 600, according to the control signal of the maintenance plan person terminal 10, The maintenance management server 30 receives the order information from the power generation management server 30 and stores the generated information in accordance with the order request, , And transmits the work schedule information to the job planner terminal (40) and the period / period test general manager terminal (50).

In addition, when classified into the second degree (green, green), the action plan manager 600 confirms and generates work schedule information without sending and receiving information to and from the power generation management server 30, / Periodic test to the general manager terminal 50.

In the case of the third degree (orange or red, orange or red), the action plan management unit 600 determines whether two or more jobs are performed in duplicate. If they are duplicated, The action schedule management unit 600 may notify the action schedule management unit 600 of a risk reduction plan, a method of minimizing the inactivity time, an emergency action in case of an accident, Transmits a request for planning relating to the planning to the power generation management server 30, receives the generated information according to the request order from the power generation management server 30, and stores it.

FIG. 2 is a diagram illustrating an example of a basic form in which a risk reduction plan prepared according to a request order according to an embodiment of the present invention, a method of minimizing an unavailable time, and the like are created.

The review result receiving unit 700 receives the inconsistency between the maintenance plan established from the task planner terminal 30 and the periodic / periodic test administrator terminal 40 and the task schedule information received through the action plan manager 600 And the results of the review of the basic work schedule including the planned future change contents.

Based on the review result received from the job planner terminal (30) and the period / period test general administrator terminal (40), the change reflector (800) reflects the change and changes the work schedule information to regenerate the work schedule information.

The uploading unit 900 uploads the contents of the risk evaluation and the changed final operation (hereinafter, referred to as &quot; modified final operation &quot;) in order to check the maintenance department, the maintenance department, Schedule information and the like are generated and uploaded.

Hereinafter, an operation method for risk assessment according to a maintenance plan of a nuclear power plant through the above-described system will be described with reference to FIG.

FIG. 3 is an overall flowchart of an operation method for risk assessment according to a maintenance plan of a nuclear power plant according to an embodiment of the present invention. As shown in FIG. 3, the plan management unit 100 receives a control signal , The maintenance progress information and the operation sequence status up to the present are reflected in the schedule of the nuclear power plant, and the maintenance plan information for all tasks to be performed is displayed (S10).

Thereafter, in accordance with the control signal from the maintenance plan operator terminal 10, the unavailability determination unit 200 determines whether the operation target device and the isolation device are risk evaluation target devices, and whether the devices result in unavailability (S20) .

As a result of the determination in step S20, in the case of a device that is a device of risk evaluation and causes incapability of use, the work schedule establishing unit 300, in accordance with the control signal of the maintenance plan manager terminal 10, Based on the requirement information of the department, work schedule information for the risk evaluation target device is established and generated (S30).

The risk evaluating unit 400 evaluates the risk based on the work schedule information and work related information established through the work scheduling unit 300 according to the control signal of the maintenance scheduling person terminal 10 S40). The risk classifying unit 500 checks the degree of risk assessed through the risk evaluating unit 400, classifies the degree of risk into the degree of risk from the first degree to the third degree, and determines whether the first degree (yellow, yellow) (S50).

As a result of the determination in step S50, when the first degree (yellow, yellow), the action plan manager 600 issues a request for minimizing the risk reduction plan and the inability to use time according to the control signal of the maintenance planner terminal 10 And transmits the order information to the power generation management server 30 and receives the build information according to the order request from the power generation management server 30 and stores the generated information in step S60. In accordance with the control signal of the maintenance plan person terminal 10, And transmits it to the task planner terminal 40 and the static / periodic test administrator terminal 50 (S70).

The review result receiving unit 700 receives the maintenance plan established from the job planner terminal 40 and the periodic / periodic test administrator terminal 50, the work schedule information received through the action plan manager 600, (Step S80). The change reflector 800 receives the review result of the basic work schedule including the inconsistency of the work schedule manager terminal 40 and the change schedule contents Based on the received review result, the work schedule information is changed by reflecting the change and regenerated (S90).

In accordance with the control signal from the maintenance plan manager terminal 10, the upload unit 900 is configured to update the contents of the risk assessment and the changed evaluation information so that the maintenance department, maintenance supervisor department, job plan manager, Final job schedule information, and the like are generated and uploaded (S100).

On the other hand, if it is determined in step S50 that the first degree (yellow, yellow) is not satisfied, the action plan management unit 600 determines whether the second degree (green, green) is satisfied (S110).

As a result of the determination in step S110, if the second degree (green, green), the action plan management unit 600 executes the procedure to step S70, and if not the second degree (green, green) 600 determines whether it is a third degree (orange or red, orange or red) (S120).

As a result of the determination in step S120, the action plan management unit 600 determines whether two or more jobs are performed in duplicate (S130), and if the third degree (orange or red, Orange or Red) Orange or red, orange or red), the procedure is executed in step S50.

As a result of the determination in operation S130, if the operation schedule is duplicated, the action plan manager 600 regenerates the work schedule information so that the work schedules do not overlap with each other according to the control signal of the maintenance scheduling operator terminal 10, (S140). If not duplicated, the action plan manager 600 transmits a request for risk reduction, minimization of unavailability time, and emergency plan establishment in case of an accident to the development management server 30 And receives the created information according to the order request from the power generation management server 30 and stores it (S150), and then executes the procedure to step S70.

On the other hand, if it is determined in step S20 that the device is not a device to be subjected to a risk evaluation, or is not a device to be evaluated or a device that causes unavailability, the work schedule establishing unit 300 may notify the maintenance main office server 20 And transmits a result signal (S160).

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be appreciated by those skilled in the art that numerous changes and modifications may be made without departing from the invention. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

In addition, the embodiments of the present invention described above are not implemented only by the apparatus and method, but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded.

S: Operating system for risk assessment according to maintenance plan of nuclear power plant
100: plan management unit 200: unavailability determination unit
300: Task scheduling part 400: Risk evaluation part
500: Risk classification section 600: Action plan management section
700: Review result reception unit 800:
900: Upload section 10: Maintenance plan person terminal
20: maintenance supervising department server 30: power generation management server
40: work plan person terminal 50: time / period test general manager terminal

Claims (11)

In an operational system for risk assessment according to a maintenance plan of a nuclear power plant,
The maintenance management information reflecting the maintenance progress information and the operation sequence status up to the present in the schedule of the corresponding unit of the nuclear power plant according to the control signal of the maintenance plan manager terminal 10 and managing and displaying the maintenance plan information for all the work to be performed, (100);
An unavailability determination unit (200) for determining, based on the control signal from the maintenance plan operator terminal (10), whether the operation target device and the isolation device are risk evaluation target devices and whether the device causes incapability of use;
If it is determined that the device is a device subject to risk evaluation as a result of the determination by the invalidity determination unit 200 and is incapable of using the device, A work schedule establishing unit (300) for establishing and generating work schedule information for the risk evaluation target device based on the requirement information;
A risk evaluating unit 400 for evaluating the risk based on the work schedule information and the work related information established through the work schedule establishing unit 300 according to the control signal of the maintenance plan manager terminal 10;
A risk classifying unit 500 for classifying the degree of risk assessed through the risk evaluating unit 400;
Information on a plan for reducing the risk and a method for minimizing the unavailability time is transmitted / received to / from the development management server 30 according to the evaluated risk level, and the work schedule information is firmly generated and transmitted to the job planner terminal 40, An action plan management unit 600 that transmits the action plan to the administrator terminal 50;
The inconsistency between the maintenance plan established from the work planner terminal 40 and the periodic / periodic test administrator terminal 50 and the work schedule information received through the action plan manager 600, A review result receiving unit 700 for receiving the review result of the basic work schedule including the job schedule; And
A change reflecting unit 800 for changing and recreating the work schedule information based on the review results received from the work planner terminal 40 and the periodic / periodic test administrator terminal 50; The operating system for risk assessment according to the maintenance plan of the nuclear power plant.
The method according to claim 1,
An upload unit 900 for generating and uploading risk evaluation and changed final job schedule information according to a control signal of the maintenance plan manager terminal 10; And an operating system for risk assessment according to a maintenance plan of a nuclear power plant.
The method according to claim 1,
The action plan management unit 600,
When the result of the classification by the risk classifying unit 500 is classified into the first degree (yellow, yellow), a risk reduction plan and a request for minimizing the unavailability time are transmitted in accordance with the control signal of the maintenance plan manager terminal 10 Transmits the order to the generation management server 30, receives the creation information according to the order request from the generation management server 30 and stores the created information, and, based on the control signal of the maintenance plan person terminal 10, To the work planner terminal (40) and the maintenance / periodic test administrator terminal (50). The operation system for risk assessment according to the maintenance plan of the nuclear power plant.
The method according to claim 1,
The action plan management unit 600,
If the classification result of the risk classification unit 500 is classified into the second degree (green, green), the job schedule information is definitively generated and transmitted to the job planner terminal 40 and the periodic / periodic test administrator terminal 50 And an operation system for risk assessment according to a maintenance plan of a nuclear power plant.
The method according to claim 1,
The action plan management unit 600,
Wherein if the classification result of the risk classification unit (500) is classified as a third degree (orange or red, orange or red), it is determined whether or not two or more jobs are performed in duplicate The operating system for risk assessment according to.
6. The method of claim 5,
The action plan management unit 600,
As a result of the determination, if it is performed in duplicate, the work scheduling information is regenerated by adjusting the work schedule information so that the work schedules do not overlap according to the control signal of the maintenance scheduling operator terminal 10, A time minimization plan and an emergency plan establishment in case of an accident are transmitted to the power generation management server 30 and the power generation management server 30 receives and stores the preparation information corresponding to the request order, Operational system for risk assessment according to plan.
As for the operation method for risk assessment according to the maintenance plan of the nuclear power plant,
(a) The plan management unit 100 reflects the maintenance progress information and the operation sequence status up to the present in the schedule of the corresponding unit of the nuclear power plant according to the control signal of the maintenance plan person terminal 10, Displaying plan information;
(b) determining whether the operation target device and the isolation device are devices subject to risk evaluation, and which are incapable of using according to a control signal of the maintenance plan operator terminal (10);
(c) If the device is a device subject to risk evaluation as a result of the determination in the step (b) and causes the device to become unavailable, the work schedule establishing unit 300, in accordance with the control signal of the maintenance plan operator terminal 10, Establishing and creating work schedule information for the risk evaluation target device based on the information on the risk assessment target and the maintenance information of the maintenance department;
(d) evaluating the risk based on the work schedule information and work related information established through the step (c), according to the control signal of the maintenance plan manager terminal 10, by the risk evaluation unit 400;
(e) The risk classifying unit 500 checks the degree of risk assessed through the step (d), classifies it into the degree of risk from the first degree to the third degree, and determines whether it is the first degree (yellow, yellow) step;
If the first degree (yellow, yellow) is determined as a result of the determination in the step (e), the action plan management unit 600, according to the control signal of the maintenance plan person terminal 10, Transmitting a request for minimization to the power generation management server (30), receiving generation information according to the request order from the power generation management server (30) and storing the generated information;
(g) The action plan manager 600 confirms and generates the work schedule information in accordance with the control signal of the maintenance plan manager terminal 10 and sends it to the work planner terminal 40 and the static / periodic test general manager terminal 50 Transmitting;
(h) As a result of the review, the receiving unit 700 receives the maintenance plan established from the task planner terminal 40 and the period / period test general manager terminal 50, and the basic task schedule received via the action plan manager 600 Receiving a review result of the basic work schedule including the inconsistency with the information and the scheduled future change contents; And
(i) Based on the review result received from the job planner terminal 40 and the period / period test general administrator terminal 50, the change information reflecting unit 800 changes the job schedule information by reflecting the change Regenerating; To operate the risk assessment according to the maintenance plan of the nuclear power plant.
8. The method of claim 7,
After the step (i)
(j) generating and uploading the content of the risk evaluation and the changed final work schedule information according to the control signal of the maintenance plan representative terminal 10, by the uploading unit 900; A method for operating a risk assessment according to a maintenance plan of a nuclear power plant.
8. The method of claim 7,
(k) determining whether the action plan management unit 600 is in a second degree (green, green) if the result of the determination in step (e) is not the first degree (yellow, yellow);
(l) If the result of step (k) is a second degree (green, green), the action plan management unit 600 performs the procedure to step (g) , It is determined whether the action plan manager 600 is in the third degree (orange or red, orange or red). And
(m) If it is determined to be the third degree (orange or red, Orange or Red) as a result of the determination in step (l), the action plan management unit 600 determines whether two or more jobs are performed in duplicate. 3 (orange or red, Orange or Red), performing the procedure to step (e) above; A method for operating a risk assessment according to a maintenance plan of a nuclear power plant.
9. The method of claim 8,
(n) If it is determined in step (m) that the work schedule information is duplicated, the action schedule management unit 600 adjusts the work schedule information so that the work schedules do not overlap according to the control signal of the maintenance scheduling person terminal 10 Regenerating and performing the procedure to the step (d); A method for operating a risk assessment according to a maintenance plan of a nuclear power plant.
9. The method of claim 8,
(o) As a result of the determination in the step (m), if the actions are not performed in duplicate, the action plan management unit 600 transmits a request for a risk reduction plan, a method for minimizing the invalidity time, (G), after receiving the creation information according to the request order from the power generation management server (30) and storing the created information in the step (g). A method for operating a risk assessment according to a maintenance plan of a nuclear power plant.

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