KR101615451B1 - System for operating nuclear power plant improving recognition and Method of operating nuclear power plant using the same - Google Patents

Abstract

The present invention relates to a system for operating a nuclear power plant which is capable of improving recognition and a method for operating a nuclear power plant using the same. The system for operating a nuclear power plant according to the present invention includes: a large information display panel for displaying an operation situation; operator displays provided to operators, respectively; and a control unit for performing a safety parameter display system (SPDS) function of representing whether a safety function is kept in an emergency operation situation and a bypassed and inoperable status indication (BISI) function of representing whether the system is usable in a normal operation situation, wherein the control unit controls the large information display panel and the operator displays, and integrates a successful path of the SPDS function and the fact whether each successful path corresponds to the BISI such that an integrated image is displayed on the large information display panel.

Description

Technical Field [0001] The present invention relates to an operating system for a nuclear power plant that improves awareness, and a method of operating the nuclear power plant using the same.

The present invention relates to an operating system of a nuclear power plant for enhancing perceptibility and a method of operating a nuclear power plant using the same.

The conventional operation support function of a nuclear power plant provides a separate system for operation support when the operator performs the operation of the power plant according to the procedure, so that the operator can perform the operation according to the procedure.

The driving support functions in the digital control room mainly include SPDS (Safety Parameter Display System), BISI (Bypassed and Inoperable Status Indication), and Tagging function.

SPDS is a system used to check the safety function status of a power plant. It is a system mainly used by the safety conductor and the development team leader in the emergency room. This system allows you to see if the safety function of the plant is maintained or if there is a problem with the safety function. In addition, SPDS can check the availability and performance of the system required to maintain safety functions.

BISI provides the role of reliable operation by allowing the operator of the main control room to keep track of usability according to the BISI algorithm for systems that are important for plant operation during normal operation of the power plant.

When a power plant performs maintenance on a certain device, it is required to share information with all main engineers and on-site operators and maintenance personnel, and the tagging function is responsible for this. This Tagging function is implemented electronically on the operation screen. At the present Nuclear Power Plant's headquarters, Tagging is displayed as flags in the information FPD (Flat Panel Display) of the operator console to inform the operator.

However, these driving support functions are implemented according to the respective regulatory requirements, but since the driving support functions are not integrated, the operator may cause confusion according to the normal or abnormal situation, which may degrade the perception and the driving ability.

For example, SPDS and BISI apply separate algorithms for normal and abnormal situations for some redundant systems, which can lead to confusing results for the operator.

In addition, there is a problem that the tagging result is not reflected in the BISI or SPDS algorithm when the tagging function is applied. In addition, if the tagging is performed due to the maintenance of a certain device, it is impossible to evaluate the availability of the system including the tagging device, and if it is not available, there is no function to provide alarm to the operator. have.

Korea Publication No. 2014-0055100 (published on May 09, 2014) Korean Registration Bulletin 10-1022606 (published on March 16, 2011)

Accordingly, it is an object of the present invention to provide an operating system of a nuclear power plant with improved operator perception and a method of operating a nuclear power plant using the same.

An object of the present invention is to provide an operating system for a nuclear power plant that improves perceptibility, comprising: a large information display panel for displaying a driving situation; A driver display provided for each operator; (SPDS) function indicating whether the safety function is maintained in an emergency operation state and a bypassed and inoperable status indication (BISI) function indicating whether the system can be used in a normal operation state. The large information display panel and the operator And the control unit controls the display unit to display the combined information of the success path and the BISI of each success path on the large information display panel as an integrated screen.

In the integrated screen, availability and performance maintenance may be displayed for each success path.

The integrated screen may be displayed by dividing each successive path into essential safety functions and general functions.

The controller may further perform a tagging function to indicate whether maintenance is performed on the specific device, and may reflect the result of the tagging function when the BISI function is performed.

In the reflection of the result of the tagging function, it can be determined that the specific tagged tag is not available in the system.

It is an object of the present invention to provide an operating system for a nuclear power plant with improved perception, comprising: a large information display panel for displaying a driving situation; A driver display provided for each operator; (Safety Parameter Display System) function that indicates whether the safety function is maintained in the emergency operation situation, Bypassed and Inoperable Status Indication (BISI) function that indicates whether the system can be used in normal operation, And a controller for controlling the large information display panel and the operator display, wherein the controller reflects a result of the tagging function when performing a BISI function and outputs a reflection result to the large information display panel and the driver ' Display on at least one of the display devices.

In the reflection of the result of the tagging function, it can be determined that the specific tagged tag is not available in the system.

The present invention provides an operation method for enhancing the perception of a nuclear power plant including a large information display panel for displaying a driving situation and an operator display provided for each operator, A Safety Parameter Display System) function; Implementing a BISI (Bypassed and Inoperable Status Indication) function indicating whether the system is usable in a normal operation state; And integrating the success path of the SPDS function with the BISI of each success path and displaying the integrated path on the large information display panel.

In the integrated screen, availability and performance maintenance may be displayed for each success path.

The single screen may be displayed by dividing each successive path into essential safety functions and general functions.

Performing a tagging function indicating whether maintenance is performed on a specific device, and performing the BISI function, the result of the tagging function may be reflected.

In the reflection of the result of the tagging function, it may be determined that the tag is disabled if there is a specific tag tagged in the relevant system.

The present invention provides an operation method for enhancing the perception of a nuclear power plant including a large information display panel for displaying a driving situation and an operator display provided for each operator, Performing a Safety Parameter Display System function; Performing a BISI (Bypassed and Inoperable Status Indication) function indicating whether the system is usable in a normal operation state; Performing a tagging function indicating whether or not to perform maintenance on a specific device; And displaying the result of the tagging function on at least one of the large information display panel and the operator display when performing the BISI function.

In the reflection of the result of the tagging function, it may be determined that the tag is disabled if there is a specific tag tagged in the relevant system.

According to the present invention, there is provided an operating system of a nuclear power plant having improved perception and a method of operating a nuclear power plant using the same.

1 is a screen showing a part of a screen showing a conventional SPDS and a BISI,
FIG. 2 shows a success path screen in the conventional SPDS screen,
FIG. 3 shows a specific screen of a specific success path of the conventional SPDS screen,
4 is a view illustrating an operation system of a nuclear power plant according to an embodiment of the present invention,
FIG. 5 shows an integrated screen of SPDS and BISI in the embodiment of the present invention,
FIG. 6 shows an algorithm and system configuration of applying SPDS and BISI in an embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention. Also, the attached drawings may be exaggerated in size and spacing in order to explain the relationship among the respective components.

In the present invention, the integrated algorithm is applied to the power plant system commonly applied to the SPDS and the BISI, and the tagging result is reflected in the integrated algorithm of the SPDS and the BISI, so that the power plant system (Information and alarm form and screen) that can judge the usability of the information.

Table 1 shows the systems that should be labeled as BISI in the digital control room and the successful path systems associated with ensuring essential safety functions during emergency operation.

Currently, the BISI in the digital control room indicates by bypassing (bypassing) or unavailability of the above 17 systems so that the operator quickly understands the availability and unavailability of the system and operates the plant safely and reliably . The available and unavailable states allow the operator in charge to manually input the unavailable status of the system through the screen so that all operators can know.

number system BISI tiles SPDS Successful Path Tiles One Containment Spray System CS CS 2 Containment Isolation System CI Pen Flow ISO
Pen Flow CTRL 3 Safety Injection System SI SI 4 Shutdown Cooling System SC SC 5 Auxiliary Feedwater System Aux Feed AUX Feed 6 Essential Service Water System ESW - 7 Component Cooling Water System CCW - 8 Emergency Diesel Generator System EDG EDG 9 Auxiliary Power System AUX PWR - 10 Control Room Area HVAC System CRA HVAC - 11 Electrical and I & C Equipment Rooms HVAC System EIR HVAC - 12 Diesel Generator Area HVAC System DGA HVAC - 13 Fuel Handling Area HVAC System FHA HVAC - 14 Essential Chilled Water System ECW - 15 Auxiliary Building Controlled Area HVAC System ABCA HVAC - 16 Chemical and Volume Control System CVCS CVCS Boration
CHG & LTDN
CVCS AUX Spray 17 Containment Purge System CPI -

1 shows essential safety function information and BISI information of an SPDS displayed on a variable area screen of an LDP (Large Dipslay Panel: large information display panel, large display) in a digital control room.

As shown in FIG. 1, in the present LDP, essential safety function information and BISI information are displayed together, and it is easy for the operator to judge the information as mutually related information in the emergency operation.

The essential safety function information is processed and displayed by the SPDS computer so that the operator can judge whether the safety function necessary to keep the plant safe during emergency operation such as the design basis accident of the power plant is judged.

If one of the nine essential safety functions (red part in FIG. 1) is not maintained, the corresponding safety function box will be displayed in yellow.

In FIG. 1, when the BISI information is bypassed or unavailable for 17 systems, the box of the system is displayed in white. In FIG. 1, information on availability of the success path system for maintaining the essential safety function is not displayed together, and the BISI screen, i.e., information mainly used in normal operation is displayed next to the essential safety function information, Can make a wrong decision.

Also, in the BISI algorithm, if the system is displayed in the System Mimic screen of the information FPD of the operation console, it is determined that the system can not be formed due to the maintenance of the system, It is necessary to inform all the operators about this fact, but the BISI algorithm considering Tagging information is not calculated.

FIG. 2 shows a success path screen among the SPDS screens displayed in the information FPD of the operation console in the digital control room. The success path monitoring is used in the emergency driving situation and performs the monitoring of the success route system that operates to maintain nine essential safety functions while performing the emergency operation procedure in case of one or more design basis accidents. The performance and availability of a successful path are presented by calculating the logic based on the Resource Assessment Tree (RAT) included in the RAT.

However, algorithms for determining the performance and availability of success paths are based on key information (pump, tank level, major process values, etc.). In practice, however, many devices (pumps and valves in series or in parallel) are configured in the flow path of the system, so the maintenance status of all the devices in the flow path must be considered but not considered in the currently applied algorithms.

2 and 3 show the SPDS success path screen (red part in the figure). As shown in FIG. 2, the success path is configured to know a portion contributing to each essential safety function. In order to know availability and satisfaction of performance, each success route is configured to display another screen (Fig. 3, IC-2 Safety Injection System screen) so that the availability and performance of the screen are shown in red in the screen.

However, in order to know the availability and performance of such a successful route, it is necessary to find the SPDS screen among many operation screens and to find a screen related to the success route among those screens, .

The logic for the nine essential safety functions is the logic described in the safety status check of the Emergency Operation Procedure (EOP). This logic can be used for normal operation, reactor shutdown, EOP 7 states (Rx Trip, LOCA, SGTR, ESDE, LOAF, (Indicated by yellow in the box) when the logic is dissatisfied by applying different logic depending on the type of power supply, the external power loss (LOOP) and the power plant power loss (SBO)).

To apply this logic, another logic can be applied by selecting the button on the leftmost side in FIG.

The present invention is intended to solve the problem that the driver's perception is degraded because the driving support function is not integrated as described above.

FIG. 4 illustrates an operation system of a nuclear power plant according to an embodiment of the present invention.

The operating system of the nuclear power plant includes a control unit 10, a large information display panel 20, and an operator display 30.

The control unit 10 performs the SPDS function, the BISI function, and the tagging function, and can integrate the performed results. The result integrated with the result of performing each function is displayed on the large information display panel 20 and the operator display 30.

The combined result of the result of performing the function and the integrated result may be displayed as an integrated screen on the large information display panel 20. The integrated results improve the operator's situational awareness.

Integration functions and integrated screens are described in detail below.

FIG. 5 shows an integrated screen of SPDS and BISI in the embodiment of the present invention. The integrated screen provides a screen that integrates the successful path screen and BISI screen of SPDS.

By providing the screen in the form of FIG. 3 at all times in the LDP (large information display panel), the operator can intuitively understand the essential safety function, the success path, and the availability of the BISI related system to enable safe operation.

In addition, it enables the operator to know the availability and performance of the system related to the BISI even during normal operation, not emergency operation, so that the operator can quickly and accurately determine the situation of the power plant and assure reliable operation.

As shown in FIG. 3, the system contributing to the essential safety function and the system contributing to the general power plant function are classified and arranged. The essential safety functions include nine functions: Reactivity Control, Vital Auxiliary, RCS Inventory Control, RCS Pressure Control, Reactor Coolant System Heat Removal RCS Heat Removal, Core Heat Removal, Containment Isolation, Containment Temp & Pressure Control, and Containment Combustible Gas Control. .

For example, reactivity control mandatory safety functions include three successful pathways: CEA Insertion, Boration using CVCS (CVCS) and Boric Acid (SIS) Reaction control can be maintained using Boration using SIS. As shown in FIG. 5, when there is a problem in the Reactivity Control function, an alarm is displayed in a yellow box corresponding to the required safety function, and the 'SIS (Safety Injection System)', which maintains the reaction control function, If the system is not available in the Boration using SIS system, the availability can be indicated by yellow warning in the box.

In addition, if there is a problem with the RCS Inventory Control, the yellow box will be displayed in the corresponding box showing the required safety function. If the SIS performance is a problem with the related function, By providing alarms in yellow boxes on the performance box, which functions are not maintained among the essential safety functions of the operator in the power plant, and which are available and which are not available, Can be easily and quickly judged.

The logic of the essential safety function is to select the logic by pressing the corresponding button in the directory of FIG. 2 in the conventional way. In Figure 5, it is shown in the figure that the logic of the essential safety function is logic related to the reactor coolant loss (LOCA) accident, so that the operator can see that the necessary safety function logic is being applied. FIG. 5 is displayed on the LDP so that the operator can quickly check the information without additional screen navigation.

6 shows an algorithm sample and its system configuration for providing an integrated operation support system function integrating SPDS and BISI functions. 6 shows a representative flow path of a general system. In order to successfully form the flow path, all operations from the valve A to the valve D must be possible, and no inoperable alarm should be generated. There may also be a tagging indication (flag on valve C in FIG. 6) to inform all operators and maintenance personnel that the tagged information is not intended to be used intentionally for maintenance purposes. In this case, since the corresponding euro can not be used, it is reflected in the logic for determining whether or not the euro is available, so that an alarm is generated in the portion indicating whether the system is available in the LDP so that the operator can accurately judge the situation of the power plant.

FIG. 6 shows a system configuration diagram, which is a screen composed of a computer A that drives the BISI and SPDS integrated screens of the LDP and a computer B that drives the integrated BISI and SPDS screens driven by the information FPD of the operation console. The LDP screen is fixedly displayed on the screen of FIG. 5, and the computer A receives the calculated result from the computer B and performs information processing for displaying the screen on the screen of FIG. Computer B serves to calculate the complex logic of BISI and SPDS and to provide many different views of SPDS for EOP execution.

In the past, the BISI screen and the SPDS screen were separated, and there was a lot of possibility that the operator could cause a human error because it was confusing to what kind of information the operator should carry out in various driving situations such as normal driving or emergency driving. However, when the screen incorporating the BISI and the SPDS is used as in the present invention, it is possible to intuitively grasp the information to be checked in the emergency operation and the information to be checked in the normal operation without a complicated interpretation, .

In addition, in the past, when information processing was performed without considering tagging information related to maintenance during the processing of BISI or SPDS information, there was a disadvantage that it is difficult for the operator to confirm availability or performance of the system from the integrated aspect. However, if the algorithm proposed in the present invention is reflected, the state of the maintenance device can be directly reflected in the information processing, and it is possible to check whether the system is available in the current state of the power plant in real time.

When the present invention is applied, the requirement of NUREG-0737, that is, continuous continuous indication of the SPDS in the main control room is enabled, so that even in emergency operation such as design basis accident, the operator can reliably perform the emergency operation procedure based on the BISI / SPDS integrated screen of LDP . The provision of the integrated screen reduces the work load of the security guard in the main control room, and other operators can share necessary information directly through the LDP.

The above-described embodiments are illustrative of the present invention, and the present invention is not limited thereto. 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 present invention as defined by the appended claims.

Claims (14)

In an operating system of a nuclear power plant improving perceptibility,
A large information display panel for displaying the driving situation;
A driver display provided for each operator;
(SPDS) function indicating whether the safety function is maintained in an emergency operation state and a bypassed and inoperable status indication (BISI) function indicating whether the system can be used in a normal operation state. The large information display panel and the operator And a control unit for controlling the display,
The control unit integrates the success path of the SPDS function with the BISI of each success path and displays the integrated path on the large information display panel,
Wherein the controller further performs a tagging function for indicating whether maintenance is performed on the specific device,
And the result of the tagging function is reflected when the BISI function is performed. The method according to claim 1,
Wherein the integrated screen displays whether availability and performance are maintained for each successive path. The method according to claim 1,
Wherein the integrated screen is displayed by dividing each successive path into essential safety functions and general functions. delete The method according to claim 1,
In reflection of the result of the tagging function,
And when it is judged that the specific device tagged in the system exists, it is judged that the apparatus is unusable. delete delete A driving method for improving the perception of a nuclear power plant including a large information display panel for displaying a driving situation and a driver display provided for each operator,
Performing a SPDS (Safety Parameter Display System) function indicating whether or not the safety function is maintained in an emergency driving situation;
Implementing a BISI (Bypassed and Inoperable Status Indication) function indicating whether the system is usable in a normal operation state;
Combining the success path of the SPDS functions with the BISI of each success path and displaying the integrated path on the large information display panel,
Further comprising performing a tagging function indicating whether or not to perform maintenance on a specific device,
Wherein the step of performing the BISI function reflects the result of the tagging function. 9. The method of claim 8,
Wherein the integrated screen displays whether availability and performance are maintained for each successive path. 9. The method of claim 8,
Wherein the integrated screen is displayed by dividing each success path into an essential safety function and a general function. delete 9. The method of claim 8,
In reflection of the result of the tagging function,
And determining that the particular system is unusable if there is a specific device tagged in the system. delete delete

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