Training method for preparing work order in nuclear power plant using virtual reality

Abstract

The present invention relates to a training method for preparing a work order in a nuclear power plant using virtual reality, the method comprising: a step in which a trainee receives basic training on a work order in a virtual office session, wherein the trainee includes an employee of an engineering department of a nuclear power plant; a step in which the trainee recognizes a failure of a turbine hall in a virtual main control room session; a step in which the trainee checks a failure record in a virtual turbine hall session; a step in which the trainee establishes a design direction of a work order for the failure record in the virtual turbine hall session; a step in which an instructor checks the design direction; a step in which the trainee withdraws materials from a virtual material warehouse session and replaces the materials in the virtual turbine hall session; and a step in which the trainee checks facility recovery in the virtual main control room session.

Description

Training Method for Creating Work Orders at a Nuclear Power Plant Using Virtual Reality

[0001] The present invention relates to a training method for creating work orders at a nuclear power plant using virtual reality.

[0002] All departments within the Nuclear Power Plant Engineering Office are responsible for the maintenance of power generation facilities to ensure the safe operation of the nuclear power plant. To perform these maintenance tasks, they design work orders—work procedures that include details on work methods, required materials, and personnel for mechanical, electrical, and instrumentation and control equipment—and execute work according to these orders after establishing a work plan.

[0003] Previously, regarding the method of designing work orders, employees in the nuclear power plant's engineering department only received theoretical training in the basic engineering job education curriculum and on-the-job training. As a result, the effectiveness of the training was low, leading to varying work order design methods among department staff and the performance of engineering tasks by designing work orders without understanding the order processing procedure (12 steps).

[0004] In addition, there are issues such as issuing work orders where work methods for mechanical, electrical, and instrumentation / control fields are incorrectly described, or where required materials are entered incorrectly.

[0005] Therefore, the objective of the present invention is to provide a training method for creating work orders at a nuclear power plant using virtual reality.

[0006] The objective of the present invention is achieved by a method for training on creating work orders in a nuclear power plant using virtual reality, comprising the steps of: a trainee receiving basic training on work orders in an office virtual session, wherein the trainee includes an employee of the engineering office of the nuclear power plant; the trainee recognizing a fault in the turbine hall in a main control room virtual session; the trainee verifying the fault details in a turbine hall virtual session; the trainee establishing a design direction for the work order in the turbine hall virtual session regarding the fault details; an instructor verifying the design direction; the trainee releasing materials in a material warehouse virtual session and replacing the materials in the turbine hall virtual session; and the trainee verifying equipment restoration in the main control room virtual session.

[0007] The above-mentioned fault equipment virtual session includes an electrical fault subsession, a mechanical fault subsession, and an instrumentation fault subsession, and the trainee may select at least one subsession.

[0008] The above mechanical failure subsession can simulate at least one of the occurrence of high vibration of the turbine building supply fan and the occurrence of valve stem leakage.

[0009] The above electrical fault subsession can simulate at least one of a circuit breaker protection relay fault and a valve opening indicator fault.

[0010] The above instrument failure subsession can simulate at least one of a lubricating oil pressure indicator failure and an indicator fitting failure.

[0011] The above trainee may create the work order header data section, work section, component section, cost section, partner section, object section, additional data section, location section, planning section, control section, and extension section in the above design direction.

[0012] The above material warehouse virtual section can generate an alarm if the above trainee releases unsuitable materials.

[0013] According to the present invention, a method for training on creating work orders at a nuclear power plant using virtual reality is provided.

[0014] Figure 1 shows the order processing procedure at a nuclear power plant, and

[0015] FIG. 2 is a flowchart illustrating a method of training for creating work orders according to an embodiment of the present invention.

[0016] Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0017] To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification.

[0018] In addition, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is illustrated.

[0019] The Engineering Office, responsible for engineering work at nuclear power plants, is broadly divided into System Engineering (SE), Component Engineering (CE), Design Engineering (DE), Program Engineering (PE), and Work Management (WM), and the detailed tasks performed by each department are as follows.

[0020] SE: Maintenance of the performance (integrity) of the entire power plant system, management of system-related technical services, management of Emergency Response Teams (ERT) and member activities for emergency maintenance during vulnerable hours, management of the preparation of critical work plans (supported by CE) and overall management, and order processing for electrical and instrumentation equipment assigned to SE.

[0021] CE: Comprehensive Management of Mechanical / Electrical / Instrumentation Equipment Integrity (Equipment integrity management, technical support for the system team for fault resolution and participation in root cause analysis, order processing, review of notifications and order processing), complete replacement and new installation of piping and equipment insulation materials

[0022] DE: Comprehensive design change management (implementation plan, contract, licensing, construction, completion), management of design services for operating nuclear power plants (headquarters lump-sum contract proposals, progress and completion processing), set point configuration management, purchasing and materials management, design change order processing

[0023] PE: Comprehensive management of the Advanced Maintenance Program (AMP), overall management of On-Operation Maintenance (OLM) related programs, operation of safety programs, comprehensive management of preventive maintenance programs, order processing, execution, and comprehensive management of predictive maintenance programs, operation of equipment programs (diagnostic testing and performance evaluation of motor-driven valves (MOV) and air-driven valves (AOV), equipment protective coating programs, processing of program-related orders).

[0024] WM: Order processing and package creation, T-12 Week (work schedule management) operation management, comprehensive maintenance work notification / order management; notification / order back-log management, chairing daily maintenance meetings, chairing work plan risk review meetings, establishment of comprehensive planned preventive maintenance plans, and process management.

[0025] The types of work orders are as follows.

[0026] - Breakdown Maintenance (CM02): A maintenance work order to restore equipment to ideal conditions in the event of a malfunction or breakdown.

[0027] - Emergency Breakdown Maintenance (CM03): A maintenance work order issued when urgent maintenance is required due to equipment malfunctions or breakdowns that could lead to the power plant entering an overloaded state or shutting down.

[0028] - Emergency Work Order (CM04): A maintenance work order issued and executed by an ERT when general or minor work, excluding emergency breakdown repair (CM03) during vulnerable hours, requires immediate action or is unavoidable due to working conditions.

[0029] The order processing procedures for work order (CM01), breakdown maintenance (CM02), emergency breakdown maintenance (CM03), and emergency work order (CM04) go through a total of 12 procedures as shown in Fig. 1.

[0030] In this invention, a virtual simulator is utilized to select objectives and subjects for the development of a basic engineering job training curriculum, and the specific details are as follows.

[0031] - Analysis of employee types assigned to the Engineering Department, design of customized training

[0032] - Development of a simulator practical training course to secure work order design capabilities for the Engineering Department, where internal departmental training has shown poor effectiveness.

[0033] - Development of a Course on Fundamentals of Engineering Job Theory Using Virtual Simulators

[0034] - Selection of Virtual-Simulator-based Basic Engineering Job Practice Content (6 items)

[0035] - Conduct evaluations of theoretical and practical training

[0036] Maintenance work proceeds through a total of 12 steps (design, issuance, quality, scheduling, approval, preparation, authorization, work, return, verification, assurance, and closure) from the design of the work order to its completion. Previously, only general theoretical training on what content to write for the 12 steps of the work order design was provided. In this invention, the process was modified so that all 12 steps of the work order design to completion for maintenance work are practiced using a Virtual-Simulator.

[0037] By analyzing the job duties of each department and part within the Engineering Office, the types of employees assigned to each department and part can be classified. The criteria for classifying the types of employees assigned to each department and part are as follows.

[0038] - Machinery field job part

[0039] - Electrical field job part

[0040] - Measurement Field Job Part

[0041] - All-field Engineering Job Part

[0042] Some departmental duties are clearly categorized into mechanical, electrical, and instrumentation, while others are not. The System Engineering, Equipment Engineering, and Design Engineering departments are clearly divided into mechanical, electrical, and instrumentation fields, so training is focused on these specific areas. Conversely, engineering management and support roles, such as those in the Program Engineering and Maintenance Management departments, cover all three fields, so intensive training is conducted across all areas. Through this approach, employees from all departments and parts of the Engineering Office select their specific area of ​​focus to undergo the 12-step Work Order Design training. During the practical evaluation, trainees individually assume the role of an Engineering Department employee to design an order, while the Deputy General Managers in charge of the mechanical, electrical, and instrumentation fields are substituted by the instructors in charge of the training to conduct the evaluation, thereby ensuring a truly practical assessment.

[0043] The present invention will be described below with reference to the drawings.

[0044] FIG. 2 is a flowchart illustrating a method of training for creating work orders according to an embodiment of the present invention.

[0045] The educational method described below can be carried out through an educational system including a computer, communication means, and a virtual reality implementation device. Specifically, it may consist of a learner input section, an instructor input section (verification section), a virtual reality section, an evaluation section, and an output section, and the virtual reality section is equipped with various sessions to be described later.

[0046] The Virtual-Component environment of the Virtual Reality Department depicts the series of activities performed by the engineering department at the power plant in a manner very similar to the actual situation.

[0047] First, the trainee receives basic training on work orders in an office virtual session (S100).

[0048] The office virtual session is responsible for implementing maintenance order design functions using virtual SAP, analyzing pre-work notifications, training on reviewing pre-work maintenance procedures, redesigning unauthorized orders, and implementing alarm reset functions after work is completed. In addition, it is responsible for training on the maintenance work processing process.

[0049] The trainee may be an employee of the engineering department at a nuclear power plant.

[0050] The trainee recognizes the failure of the turbine hall in the subject room virtual session (S200).

[0051] The main control room virtual session implements alarm generation in the event of turbine hall equipment failure, maintenance order review and work authorization (requesting redesign if the order is unsatisfactory), and alarm reset functions after work is completed. In addition, it allows for an indirect experience of the main control room configuration and is responsible for implementing a pre-work situational awareness review related to human error.

[0052] Afterwards, the trainee checks the failure history in the turbine hall virtual session (S300).

[0053] The turbine hall virtual session implements power generation equipment failure scenarios, maintenance order review and work authorization, and alarm reset functions after work is completed. In addition, it covers indirect experience of the main control room configuration and training on pre-work inspection reviews.

[0054] The turbine hall virtual session includes an electrical failure subsession, a mechanical failure subsession, and an instrumentation failure subsession that specifically implement failure situations.

[0055] The trainee selects at least one subsession. Alternatively, the training system may select one considering the trainee's department, history, and training experience, and in other embodiments, the system may randomly select a subsession.

[0056] Each subsession is provided with two failure cases, and either one of them may be presented to the trainee at random.

[0057] In other embodiments, the types of subsessions and the number of failure cases for each subsession may be different.

[0058] The mechanical failure subsession simulates high vibration in the turbine building supply fan and valve stem leakage.

[0059] In the high vibration scenario of the turbine building supply fan, high vibration caused by bearing failure is simulated, and maintenance order design information such as functional location, equipment number, and current status is provided. In addition, it allows users to indirectly experience the vibration conditions generated during fan bearing failure and the impact of fan failure on the power generation equipment.

[0060] In the valve stem leakage occurrence, steam leakage caused by stem failure is simulated, and maintenance order design information such as functional location, equipment number, and current status is provided. In addition, it allows users to indirectly experience the valve leakage situation when the valve stem fails and the impact on the power generation equipment when the valve fails.

[0061] The electrical fault subsession simulates circuit breaker protection relay failures and valve opening indicator failures.

[0062] In the case of a circuit breaker protection relay failure, it simulates the shutdown of the turbine building exhaust system fan caused by the failure and provides maintenance order design information such as functional location, equipment number, and current status. In addition, it allows users to indirectly experience the shutdown of related equipment and the impact of the protection relay failure on the power generation facility.

[0063] In the event of a valve opening indicator failure, it simulates an incomplete opening indication caused by the failure and provides maintenance order design information such as functional location, equipment number, and current status. In addition, it allows users to indirectly experience the situation regarding the incomplete opening indication caused by the valve opening indicator failure and the impact on power generation facilities when such an incomplete indication occurs.

[0064] The instrumentation failure subsession simulates lubricating oil pressure indicator failure and indicator fitting failure.

[0065] In the lubricating oil pressure indicator failure scenario, it simulates the occurrence of an oversaturation of the turbine lubricating oil supply pressure caused by the indicator failure, and provides maintenance order design information such as functional location, equipment number, and current status. In addition, it allows users to indirectly experience the situation regarding an oversaturation of pressure caused by the lubricating oil pressure indicator failure and the impact on power generation facilities when such an oversaturation occurs.

[0066] In the indicator fitting failure scenario, a moisture separator pressure indicator fitting failure situation (occurrence of steam leakage due to fitting failure) is simulated, and maintenance order design information such as functional location, equipment number, and current status is provided. In addition, it allows for an indirect experience of the steam leakage situation caused by fitting failure and the impact on power generation equipment when fitting failure occurs.

[0067] The trainee establishes the design direction of the work order in the turbine hall virtual session regarding the failure history (S400).

[0068] The design direction of a work order can be established through a work order design system. The work order design system requires the input of necessary information into a total of 11 sections, ranging from a header data section describing work procedures for maintenance work to an extension section reviewing the possibility of inducing transient states in power generation facilities and industrial safety requirements. Trainees design work orders within the work order design system and practice designing work orders in an environment similar to actual power generation facility failure situations. The instructor can coach trainees on areas where they are lacking through the work order design system designed by the trainees, and can finally evaluate the work order designs made by the trainees using the order design practice evaluation form shown in Fig. 10.

[0069] The 11 sections include the work order header data section, work section, component section, cost section, partner section, object section, additional data section, location section, planning section, control section, and extension section.

[0070] The detailed structure of each session is as follows.

[0071] ○ Header data section

[0072] - Long Text Area: Write the work sequence, including failure details, cause of failure, preliminary review, work procedures, reference materials, etc.

[0073] - Manager Area: Planner Group, Main Workplace, Designer ID, Notification Number, Cost, PM Activity Type, Working Conditions) Fill out

[0074] - Date Area: Write Default Start, Default End, Priority, Quality (QA) Check Items

[0075] - Reference Objects: Create Function Locations, Equipment, Assemblies

[0076] ○ Work Section: Fill out items for Workplace, Plant, Work Details, Personnel, and Work Hours

[0077] ○ Component Item Section: Enter Material Number, Material Name, Quantity, and Material Warehouse Location

[0078] ○ Cost Section: Write down the costs required for maintenance work

[0079] ○ Partner Section: Write the designer's name, quality inspector's name, and partner worker's name.

[0080] ○ Object Section: Create related maintenance work equipment number, additional objects, and function locations

[0081] ○ Additional Data Section: Create Company Code, Business Area, and WBS Area

[0082] ○ Location Section: Maintenance Plant, Facility Location, Room Number, Plant Section, Workplace, Importance

[0083] ○ Planning Section: Create maintenance plan, call number, and previous order number

[0084] ○ Control Section: Write relevant information such as management data inputter, creation date, modifier, and modification date.

[0085] ○ Extension Section

[0086] - Technical Review Results Area: Related to Technical Operational Guidelines, Need for Temporary Modification, Vulnerable Equipment, Post-Maintenance Testing, Necessity of Equipment Operation, Requirement for Calibration, Radiation Work Permit, Fire Safety Work Permit, NCR Issuance Status, Off-site Power Loss Assessment, Necessity of Work Plan, Requirement for Repair / Replacement, Foreign Object Ingress Prevention Zone Classification, Preparation of Pre-Work Meeting

[0087] - Safety Work Requirements Area: Selection of industrial safety-related work requirements and selection of related auxiliary tasks

[0088] The instructor confirms the design direction established by the trainee (S500).

[0089] Instructor verification can be performed in the subject room virtual session.

[0090] If the instructor determines that there are problems or errors in the design direction, feedback should be provided to the trainee to revise the design direction. The instructor may also utilize the Order Practice Evaluation Sheet for their judgment.

[0091] If the instructor determines that there is no problem with the design direction, the trainee releases the material from the material warehouse virtual session and replaces the material in the turbine hall virtual session (S600).

[0092] The Material Counter Virtual Section implements the function of issuing suitable materials to each faulty power generation facility in the turbine hall, generates alarms upon the issuance of unsuitable materials, and handles training on verifying the location of each material. In addition, it provides training on operational experiences regarding the use of unsuitable materials and conducts training on material master verification.

[0093] Afterwards, the trainee checks the equipment recovery in the virtual session of the subject room (S700).

[0094] Specifically, once the task is completed, return to the main control room virtual session and request the instructor to restore the equipment. Once the equipment restoration is complete, the alarm in the main control room is cleared.

[0095] In other embodiments, artificial intelligence can perform evaluations of design directions, feedback, and verification of the completion of recovery work instead of an instructor.

[0096] Although it was not done in the city, the instructor can evaluate the trainee later using an evaluation sheet.

[0097] Designing work orders is one of the most important duties of all departments in the engineering office responsible for restoring facilities to protect the safety of personnel and the public in the event of a failure or transient state of power generation equipment at a nuclear power plant. Therefore, the development of a basic engineering job training course utilizing a virtual simulator according to the present invention can effectively develop the necessary work competencies for all employees in the engineering office and contribute to the safe operation of the nuclear power plant by improving maintenance quality.

[0098] The effects according to the present invention are as follows.

[0099] ○ Early acquisition of competencies required by Engineering Department staff (acquiring competencies before department placement)

[0100] ○ Ability to identify problems and manage related tasks through hands-on experience of power generation equipment failures in various fields

[0101] ○ Immediate work possible through increased understanding of basic tasks and improved application in the field

[0102] ○ Prevention of unexpected work stoppages and reduction of human error through practical work order design in case of equipment failure

[0103] ○ Securing power plant stability and internal / external credibility by performing equipment restoration work through rapid and accurate order design in the event of transient conditions.

[0104] ○ Establishing order design standardization by presenting common work order design criteria across all business sites through training for all new and transferred employees

[0105] ○ Enhanced educational effectiveness and increased operational efficiency through customized training for each trainee

[0106] The aforementioned embodiments are examples for explaining the present invention, and the present invention is not limited thereto. Since a person skilled in the art to which the present invention pertains can implement the present invention by making various modifications therefrom, the technical scope of protection of the present invention should be determined by the appended claims.

Claims

1. Regarding a training method for creating work orders at a nuclear power plant using virtual reality, A stage in which a trainee receives basic training on work orders in an office virtual session, wherein the trainee includes an employee of the engineering department of a nuclear power plant; A step in which the above trainee recognizes a failure in the turbine hall during a virtual session in the subject room; A step in which the above trainee checks the failure history in the turbine hall virtual session; A step in which the above trainee establishes the design direction of the work order in the above turbine hall virtual session regarding the above failure details; A step in which the instructor confirms the above design direction; A step in which the above trainee releases materials from the material warehouse virtual session and replaces the materials in the turbine hall virtual session; and A training method comprising the step of the above trainee verifying equipment recovery in the above subject room virtual session.

2. In Paragraph 1, The above-mentioned fault equipment virtual session includes an electrical fault subsession, a mechanical fault subsession, and an instrumentation fault subsession, and A training method in which the above-mentioned trainee selects at least one subsession.

3. In Paragraph 2, The above machine failure subsession is an educational method that simulates at least one of the occurrence of high vibration of the turbine building supply fan and the occurrence of valve stem leakage.

4. In Paragraph 2, The above electrical fault subsession is an educational method that simulates at least one of a circuit breaker protection relay fault and a valve opening indicator fault.

5. In Paragraph 2, The above-mentioned instrument failure subsession is an educational method that simulates at least one of a lubricating oil pressure indicator failure and an indicator fitting failure.

6. In Paragraph 2, A training method in which the above trainee creates a work order header data section, work section, component section, cost section, partner section, object section, additional data section, location section, planning section, control section, and extension section in the above design direction.

7. In Paragraph 2, The above material warehouse virtual section is a training method that generates an alarm when the above trainee releases unsuitable materials.

Images