Monitoring device, display method, and program

Abstract

We provide a monitoring device that notifies users of the remaining time in the event of an emergency. [Solution] The monitoring device comprises a data acquisition unit that acquires plant operation data, a determination unit that determines whether or not an emergency has occurred in the plant based on related data that defines an emergency that occurs when the operating data meets a predetermined condition for a predetermined time, and the operating data acquired by the data acquisition unit, and a display control unit that displays the occurrence of the emergency when the determination unit determines that an emergency has occurred, wherein the display control unit displays the remaining time until the predetermined time has elapsed or the elapsed time since the operating data met the predetermined condition, from the time the operating data met the predetermined condition until the predetermined time has elapsed.

Description

Technical Field

[0001] The present disclosure relates to a monitoring device, a display method, and a program.

Background Art

[0002] When an emergency occurs in a nuclear power plant, the type and level of the emergency are determined based on EAL (Emergency Action Level), and the determination result is reported to relevant departments. Emergencies are classified into three levels based on facility information, radiation dose, etc.: "Alert (AL)", "Site Emergency (SE)", and "General Emergency (GE)", with the severity of the emergency increasing in the order of AL, SE, and GE. Patent Document 1 discloses a system that acquires operation status data indicating the operation status of equipment in a nuclear power plant, determines the event and its level caused by the operation status of the equipment based on the acquired operation status data, and displays the determination result on a display device. Although Patent Document 1 describes notifying the occurrence of an emergency, some emergencies are conditioned on the operating status of equipment remaining in a predetermined state continuously for a certain period of time before it is determined that the emergency has occurred. If such an emergency is simply notified when it occurs, there is a possibility that the emergency may be determined to have occurred without being noticed in a situation where various other situation judgments must be performed in parallel.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] If it takes a certain amount of time before an emergency is determined to have occurred, it is desirable to notify the remaining time until the emergency is determined to have occurred.

[0005] This disclosure provides a monitoring device, a display method, and a program that can solve the above-mentioned problems. [Means for solving the problem]

[0006] The monitoring device of this disclosure comprises: a data acquisition unit that acquires plant operation data; a determination unit that determines whether or not an emergency has occurred in the plant based on relevant data that defines an emergency that occurs when the operating data satisfies a predetermined condition for a predetermined time, and the operating data acquired by the data acquisition unit; and a display control unit that displays the occurrence of the emergency when the determination unit determines that an emergency has occurred. The display control unit displays the remaining time until the predetermined time has elapsed or the elapsed time since the operating data satisfies the predetermined condition, from the time the operating data satisfies the predetermined condition until the predetermined time has elapsed.

[0007] The display method of this disclosure is a display method performed by a computer and includes the steps of: acquiring plant operation data; determining whether an emergency has occurred in the plant based on relevant data that defines an emergency that occurs when the operating data has met a predetermined condition for a predetermined time, and the operating data acquired in the acquisition step; displaying the remaining time until the predetermined time has elapsed or the elapsed time since the operating data has met the predetermined condition, for the period from when the operating data has met the predetermined condition until the predetermined time has elapsed; and, if it is determined in the determination step that an emergency has occurred, displaying the occurrence of the emergency.

[0008] Furthermore, the program of this disclosure causes a computer to perform the following steps: acquire plant operation data; determine whether or not an emergency has occurred in the plant based on relevant data that defines an emergency that occurs when the operating data meets a predetermined condition for a predetermined time, and the operating data acquired in the acquisition step; display the remaining time until the predetermined time has elapsed or the elapsed time since the operating data met the predetermined condition, for the period from when the operating data met the predetermined condition until the predetermined time has elapsed; and, if it is determined in the determination step that an emergency has occurred, display the occurrence of the emergency. [Effects of the Invention]

[0009] According to the monitoring device, display method, and program of this disclosure, if a certain amount of time is required before it is determined that an emergency of a certain level has occurred, the remaining time until the emergency is determined to have occurred can be notified. [Brief explanation of the drawing]

[0010] [Figure 1] A block diagram showing an example of a monitoring device according to the embodiment. [Figure 2] This figure shows an example of a monitoring screen according to the embodiment. [Figure 3] This is the first figure showing an example of a timer display according to the embodiment. [Figure 4] This is a second figure showing an example of a timer display according to the embodiment. [Figure 5] This flowchart shows an example of the display process according to the embodiment. [Figure 6] This figure shows an example of the hardware configuration of the monitoring device according to the embodiment. [Modes for carrying out the invention]

[0011] <Embodiment> The monitoring device described herein will be explained below with reference to Figures 1 to 6. (composition) Figure 1 is a block diagram showing an example of a monitoring device according to an embodiment. The monitoring device 10 acquires plant operation data from the nuclear power plant 1, determines the plant status based on the EAL (Emergency Assessment List) which defines criteria for determining what kind of emergency has occurred at the nuclear power plant 1, and outputs the result to the display device 2. The monitoring device 10 comprises a data acquisition unit 11, a determination unit 12, a display control unit 13, an audio output unit 14, and a storage unit 15.

[0012] The data acquisition unit 11 acquires plant operation data from the nuclear power plant 1 and records the acquired plant operation data in the storage unit 15. The nuclear power plant 1 has a reactor system including a reactor and a turbine system including a steam turbine and a generator. The reactor is a light water reactor such as a pressurized water reactor (PWR) or a boiling water reactor (BWR). The reactor system and turbine system are equipped with various equipment and devices such as sensors, valves, pumps, and power supplies (external power supply, internal power supply, emergency power supply (emergency generator) and storage batteries) located at various points. The data acquisition unit 11 acquires plant operation data including operating status data of these devices, measured values ​​such as temperature, pressure, and radiation dose measured by various sensors, and user operation information and setting values ​​for various devices.

[0013] The determination unit 12 determines the type and level of an emergency occurring at the nuclear power plant 1 based on the plant operation data acquired by the data acquisition unit 11 and the related data. The related data is an emergency determination logic that defines the relationship between the operating status of equipment and the measured values ​​of sensors and the type and level of an emergency occurring at the nuclear power plant 1 indicated by that operating status and measured values. This related data conforms to the EAL judgment criteria, and the determination unit 12 determines the type and level of the emergency (AL, SE, GE). There are dozens of types of emergencies that can be determined, such as "abnormal reactor shutdown function," "reactor coolant leakage," "loss of reactor feedwater function" (in the case of BWR), "loss of steam generator feedwater function" (in the case of PWR), "increase in radiation levels near the site boundary," "loss of containment vessel integrity," and "loss of reactor control room function," and at least one level from AL, SE, and GE is associated with each of them. For example, AL and GE are associated with "abnormal reactor shutdown function," and AL, SE, and GE are associated with "reactor coolant leakage."

[0014] The relevant data includes criteria for determining what kind of emergency (type and level) has occurred based on the values ​​of the plant's operating data. Some emergencies require that the operating data meet certain conditions and that these conditions remain met for a predetermined period of time. For example, regarding "reactor coolant leakage," it is stipulated that if conditions are met, such as the inability to complete measures to address the leakage within a predetermined time after a leakage rate exceeding the limit is confirmed, it is determined that "reactor coolant leakage" (AL) has occurred. Based on the data indicating the coolant leakage status included in the plant's operating data acquired by the data acquisition unit 11, the determination unit 12 records the time when a leakage rate exceeding the limit was first confirmed in the storage unit 15 and monitors the time until measures to address the leakage are completed. If conditions such as the time until completion of measures exceeding the predetermined time are met, the determination unit 12 determines that an AL-level emergency, "reactor coolant leakage," has occurred and records the time of this determination in the storage unit 15. If measures against a coolant leak are completed within a predetermined time, the determination unit 12 does not determine that an AL-level "reactor coolant leak" has occurred, and instead records the time when the condition was not met and the condition that was not met (for example, completion of measures within a predetermined time) in the storage unit 15. The types and levels of emergencies and the conditions for their occurrence vary depending on the plant, and the relevant data contains the determination criteria for all emergencies that should be monitored at nuclear power plant 1. When an accident occurs at nuclear power plant 1, the determination unit 12 determines what kind of emergency has occurred based on the plant's operating data and relevant data acquired by the data acquisition unit 11. However, since multiple emergencies may occur, the determination of emergencies is performed simultaneously. For example, as in the example above, while monitoring whether a certain condition continues for a predetermined time, the determination unit also constantly monitors whether the conditions for other emergencies are met.

[0015] The display control unit 13 generates a display screen that shows the determination result from the determination unit 12, and outputs the generated display screen to the display device 2. An example of a display screen generated by the display control unit 13 is shown in Figure 2. Figure 2 is a diagram showing an example of the EAL status screen 100. The EAL status screen 100 displays a list of emergencies that should be monitored at the nuclear power plant 1. Blocks 101a, 101b, 102a, 102b, 102b, 103a, 104a, 105a, 106a, 107a, etc., displaying the name or abbreviation of the emergency, are classified and placed in one of the following areas according to the nature of the emergency: area 101 for "Radiation dose / release of radioactive material," area 102 for "Abnormal cooling function," area 103 for "Abnormal boundary function," area 104 for "Other threats," area 105 for "Abnormal shutdown function," area 106 for "Abnormal power supply function," and area 107 for "Transportation outside the business premises." Blocks indicating the level of urgency associated with each emergency are placed in association with the name of the emergency. For example, regarding the increase in "site boundary radiation dose," SE level block 101a1 and GE level block 101a2 were placed, and regarding "coolant leakage," AL level block 102a1, SE level block 102a2, and GE level block 102a3 were placed. The same applies to other emergencies.

[0016] When no emergency has occurred at nuclear power plant 1, the display control unit 13 displays the names and levels of all emergencies in the normal display format (for example, gray text on a white background). For example, when the conditions for the AL level of "coolant leak" are met, the display control unit 13 displays the text "coolant leak" in block 102a in blue, and also displays the corresponding AL block 102a1 in blue. Next, when the event progresses and the conditions for the SE level are met, the display control unit 13 displays the text "coolant leak" in block 102 in yellow, and also displays the corresponding SE block 102a2 in yellow. Further, when the event progresses and the conditions for the GE level are met, the display control unit 13 displays the text "coolant leak" in block 102 in red, and also displays the corresponding GE block 102a3 in red. Note that the colors listed here are just examples, and the occurrence of an emergency may be indicated by other display format changes such as other colors, flashing, or changes in font size.

[0017] Further, when a certain state is required to continue for a certain period of time before it is determined that an emergency has occurred, the display control unit 13 displays the remaining time until the condition is satisfied in a block indicating the urgency level. For example, in the case of the SE level of "loss of AC power supply", satisfaction of the following conditions is required. (1) Out of service of the emergency high-voltage bus A, (2) Out of service of the emergency high-voltage bus B, (3) Voltage drop of the service buses A, B, and C, (4) A predetermined time (e.g., 30 minutes) has elapsed after conditions (1) to (3) are satisfied. The determination unit 12 records the time when each of the conditions (1) to (3) is satisfied each time the condition is satisfied, and starts measuring time when all of the conditions (1) to (3) are satisfied. Then, the elapsed time after conditions (1) to (3) are satisfied is output to the display control unit 13. The display control unit 13 acquires the elapsed time from the determination unit 12, and displays the remaining time until the condition (4) is satisfied and the elapsed percentage of time until the condition is satisfied in the block 106a2. An example of this display is shown in FIG. 3. FIG. 3 is a display example of the block 106a2 immediately after conditions (1) to (3) are satisfied. The display control unit 13 displays the remaining time of 1800 (seconds) on the upper stage portion 106a21 on the right side of the block 106a2, and displays the elapsed percentage of time on the lower stage portion 106a22. The display control unit 13 displays the progress (elapsed percentage) by filling the progress bar in the lower stage portion 106a22 according to the elapsed time. The display control unit 13 may, instead of or in addition to the remaining time until the condition is satisfied, display the elapsed time after conditions (1) to (3) are satisfied, or may, instead of the progress bar, display the elapsed percentage of time such as "900 / 1800" or "50%" (when 15 minutes have elapsed).

[0018] Furthermore, when a block indicating the level of urgency is pressed or selected by the user, the display control unit 13 displays on a separate screen (referred to as a logic diagram) the status of the conditions for determining that an emergency of the selected level has occurred. An example of the logic diagram 200 displayed when block 106a2 is selected is shown in Figure 4. The display control unit 13 displays the SE level determination logic for "AC power loss" and displays the timer setting value (30 minutes) near the arrow 200b that connects the square mark 200a indicating that the conditions (1) to (3) must be met and the event block 200c indicating that an SE level "AC power loss" has occurred (for example, at position 200d). The display control unit 13 also displays the time when conditions (1) to (3) were met (start time of the countdown) 12:02, the remaining time until condition (4) is met 5 minutes and 30 seconds, and the elapsed time at positions 200e, 200f, and 200g, respectively, near the arrow 200b. Regarding the remaining time display (position 200f), if the remaining time is 30 minutes or more, it may be displayed as hours and minutes without seconds, and if it is 30 minutes or less, it may be displayed as hours, minutes, and seconds. In logic diagram 200, the elapsed time may be displayed instead of the remaining time (position 200f), or the elapsed time percentage, such as "900 / 1800" or 50%, may be displayed instead of the progress bar (position 200g). When 30 minutes have passed since the start of the countdown, the display control unit 13 fills in the progress bar (position 200g) completely and hides the remaining time (position 200f). The display control unit 13 may also display the time when 30 minutes have passed since the start of the countdown (12:32) at the position of the remaining time (position 200f). These displays prevent an emergency from being detected unnoticed when it takes a certain amount of time before an emergency of a certain level is determined, and allow the monitor to be constantly notified of how much time remains until the conditions are met.

[0019] If any of the conditions (1) to (3) becomes unsatisfied after all of the conditions (1) to (3) are satisfied, the determination unit 12 records the unsatisfied condition and the time at which the condition became unsatisfied in the storage unit 15, and outputs the unsatisfied condition and the time thereof to the display control unit 13. In response to this, the display control unit 13 hides the remaining time (upper section 106a21) and the progress status (lower section 106a22) in block 106a2 of FIG. 3. In the case of FIG. 4, the display control unit 13 hides the displays at positions 200e, 200f, and 200g, and if (1) has become unsatisfied, notifies the unsatisfaction of condition (1) by, for example, updating the black line to the right of the check mark for "Determination" in the "Emergency High-Voltage Bus A" row to a white line.

[0020] The audio output unit 14 notifies the operator by voice that a certain level of emergency has occurred, the progress status up to the occurrence of the emergency, and the like. For example, when 30 minutes have passed after the above conditions (1) to (3) are satisfied, the audio output unit 14 outputs a voice such as "30 minutes have passed since the loss of AC power supply". Alternatively, every time 10 minutes have passed after the above conditions (1) to (3) are satisfied, a voice such as "10 minutes have passed since the loss of AC power supply" or "20 minutes have passed since the loss of AC power supply" may be output.

[0021] The storage unit 15 stores the moment-by-moment plant operation data acquired by the data acquisition unit 11, relevance data for determining an emergency, the time when the determination unit 12 makes various determinations, for example, when each of the conditions (1) to (3) regarding "loss of AC power supply" is satisfied, the satisfied condition and the time when the condition is satisfied, the time when all of (1) to (3) are satisfied and countdown starts, the time when 30 minutes have passed from the countdown and it is determined that an SE-level "loss of AC power supply" has occurred, or, if any of the conditions (1) to (3) becomes unsatisfied during the monitoring of the 30-minute elapsed time, the unsatisfied condition and the time thereof, and the like.

[0022] (Operation) Next, the operation of the monitoring device 10 will be described with reference to FIG. 5. FIG. 5 is a flowchart showing an example of display processing according to the embodiment. First, the data acquisition unit 11 acquires the plant's operating data (step S1). Next, the determination unit 12 determines, based on the plant's operating data acquired in step S1 and the related data, whether an emergency of any level has occurred at the nuclear power plant 1 (step S2). The determination unit 12 makes this determination based on the conditions for each emergency and level included in the related data. If the plant's operating data satisfies any of the conditions, the determination unit 12 determines that an emergency of the level corresponding to that condition has occurred; otherwise, it determines that no emergency has occurred. If it is determined that no emergency has occurred (step S2; No), the determination unit 12 proceeds to step S4. If it is determined that an emergency of any level has occurred (step S2; Yes), the display control unit 13 highlights the corresponding emergency and level block on the EAL status screen 100, as illustrated in Figure 2, in a predetermined display manner (step S3). The display control unit 13 performs this display control for all emergencies that satisfy the conditions. Furthermore, the audio output unit 14 notifies the user via audio output that an emergency of that level has occurred. The audio output unit 14 makes this audio output for all emergencies that meet the conditions for their occurrence.

[0023] Next, the determination unit 12 determines whether there is an emergency that can be determined to have occurred after a certain period of time has elapsed (step S4). For example, if the data acquisition unit 11 acquires signals indicating the failure of emergency high-voltage bus A and emergency high-voltage bus B, and further acquires measured voltage values ​​of normal buses A, B, and C, and all of these measured values ​​have fallen below a predetermined threshold, the determination unit 12 determines that the above conditions (1) to (3) are met, and if this state continues for 30 minutes, an SE level "AC power loss" will occur, that is, an emergency (SE level "AC power loss") that can be determined to have occurred after a certain period of time has elapsed exists. If it is determined that no such emergency exists (step S4; No), the unit proceeds to step S6. If it is determined that an emergency that can be determined to have occurred after a certain period of time exists (step S4; Yes), the display control unit 13 displays a timer (step S5). For example, the display control unit 13 displays the remaining time (or elapsed time) and the progress of the elapsed time in block 106a2 as illustrated in Figure 3. Furthermore, when the user operates and displays the logic diagram 200 as illustrated in Figure 4, the display control unit 13 displays the remaining time (or elapsed time) and the progress rate of the elapsed time at a predetermined position in the logic diagram 200. At this time, the audio output unit 14 may also output audio at predetermined time intervals, such as the remaining time until the condition is met or the elapsed time since the countdown started.

[0024] Next, the monitoring device 10 determines whether or not to terminate monitoring of the nuclear power plant 1 (step S6). For example, if the user performs an operation to instruct the termination of monitoring, the monitoring device 10 determines to terminate monitoring; otherwise, it determines not to terminate monitoring. If it determines to terminate monitoring (step S6; Yes), the flow in Figure 5 is terminated. If it determines not to terminate monitoring (step S6; No), the process from step S1 is repeated.

[0025] As the process from step S1 is repeatedly executed, if it is determined in step S4 of the previous loop that an emergency will occur after a certain amount of time has elapsed (step S4; Yes), then in the current loop, if a certain amount of time has elapsed, the determination unit 12 determines in step S2 that an emergency has occurred. In this case, the display control unit 13 displays the progress bar (lower section 106a22) in a fully filled state in the level-specific block 106a2 illustrated in Figure 3, and hides the remaining time display (upper section 106a21). Alternatively, in the logic diagram 200 illustrated in Figure 4, the display control unit 13 may display the progress bar (position 200g) in a fully filled state, hide the remaining time (position 200f), and instead display the time when a certain amount of time (30 minutes) has elapsed since conditions (1) to (3) were met. The audio output unit 14 also outputs an audio message indicating that a certain amount of time has elapsed since conditions (1) to (3) were met, or that an SE level "AC power loss" has occurred.

[0026] (effect) As explained above, according to this embodiment, if it takes a certain amount of time before it is determined that an emergency of a certain level has occurred, the remaining time until the conditions for determining that an emergency has occurred are met can be notified. This prevents the problem of the emergency being determined to have reached a certain level without the monitor's knowledge, leading to delays in taking necessary action.

[0027] Figure 6 shows an example of the hardware configuration of the monitoring device. The computer 900 includes a CPU 901, main memory 902, auxiliary memory 903, input / output interface 904, and communication interface 905. The monitoring device 10 described above is implemented in the computer 900. The functions described above are stored in the auxiliary memory 903 in the form of programs. The CPU 901 reads the program from the auxiliary memory 903, expands it into the main memory 902, and executes the above processing according to the program. The CPU 901 also allocates memory space in the main memory 902 according to the program. The CPU 901 also allocates memory space in the auxiliary memory 903 to store data being processed according to the program.

[0028] Furthermore, a program to implement all or part of the functions of the monitoring device 10 may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be loaded into a computer system and executed to perform processing by each functional unit. Here, "computer system" includes hardware such as the OS and peripheral devices. Also, if a WWW system is used, "computer system" also includes the homepage provisioning environment (or display environment). Furthermore, "computer-readable recording medium" refers to portable media such as CDs, DVDs, USBs, and storage devices such as hard disks built into the computer system. In addition, if this program is distributed to computer 900 via a communication line, computer 900 that receives the distribution may load the program into main memory 902 and execute the above processing. Furthermore, the above program may be for implementing only a part of the functions described above, and may also be able to implement the above functions in combination with programs already recorded in the computer system.

[0029] As described above, several embodiments relating to this disclosure have been explained, but all of these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be carried out in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents.

[0030] <Note> The monitoring device, display method, and program described in the embodiment can be understood, for example, as follows:

[0031] (1) The monitoring device according to the first embodiment comprises: a data acquisition unit that acquires plant operation data; a determination unit that determines whether or not an emergency has occurred in the plant based on related data that defines an emergency that occurs when the state in which the predetermined conditions are met continues for a predetermined time after the operation data has met a predetermined condition, and the operation data acquired by the data acquisition unit; and a display control unit that displays the occurrence of the emergency when the determination unit determines that an emergency has occurred, wherein the display control unit displays the remaining time until the predetermined time has elapsed or the elapsed time since the operation data has met the predetermined condition, from the time the operation data has met the predetermined condition until the predetermined time has elapsed. This allows for notification of the remaining time until an emergency is determined to have occurred, in cases where a certain amount of time is required before the emergency is determined to have occurred.

[0032] (2) The monitoring device according to the second embodiment is the monitoring device according to (1), further comprising an audio output unit which, when the determination unit determines that the emergency has occurred, notifies the occurrence of the emergency by audio output. By notifying monitors of emergencies via voice, the occurrence of an emergency can be more reliably communicated to them.

[0033] (3) The monitoring device according to the third embodiment is the monitoring device according to (1) to (2), wherein the display control unit displays the percentage of time elapsed from the time the operating data satisfies the predetermined conditions until the predetermined time has elapsed. This allows for an intuitive understanding of the remaining time until an emergency is determined to have occurred.

[0034] (4) The monitoring device according to the fourth embodiment is the monitoring device according to (1) to (3), wherein the display control unit displays the time when the operating data satisfies the predetermined conditions. This allows you to know when the countdown has started.

[0035] (5) The monitoring device according to the fifth embodiment is the monitoring device according to (1) to (4), wherein when the determination unit determines that the emergency has occurred, the display control unit displays the time at which it was determined that the emergency had occurred. This allows us to determine the exact time when an emergency occurred.

[0036] (6) The monitoring device according to the sixth embodiment is the monitoring device according to (1) to (5), wherein the display control unit displays the remaining time in hours and minutes if the remaining time until the predetermined time has elapsed is equal to or greater than a threshold, and displays the remaining time in hours, minutes and seconds if it is less than the threshold. This allows you to determine the remaining time with the appropriate level of precision.

[0037] (7) A display method relating to the seventh aspect is a display method performed by a computer, comprising: a step of acquiring plant operation data; a step of determining whether or not an emergency has occurred in the plant based on relevant data that defines an emergency that occurs when the state of being satisfied in the predetermined conditions continues for a predetermined time after the operation data has satisfied a predetermined condition, and the operation data acquired in the acquisition step; a step of displaying the remaining time until the predetermined time has elapsed or the elapsed time since the operation data has satisfied the predetermined conditions, during the period from when the operation data has satisfied the predetermined conditions until the predetermined time has elapsed; and a step of displaying the occurrence of the emergency if it is determined in the determination step that an emergency has occurred.

[0038] (8) The program according to the eighth aspect causes a computer to perform the following steps: acquire plant operation data; determine whether or not an emergency has occurred in the plant based on relevant data that defines an emergency that occurs when the operating data has met a predetermined condition for a predetermined time, and the operating data acquired in the acquisition step; display the remaining time until the predetermined time has elapsed or the elapsed time since the operating data has met the predetermined condition, until the predetermined time has elapsed since the operating data has met the predetermined condition; and, if it is determined in the determination step that an emergency has occurred, display the occurrence of the emergency. [Explanation of symbols]

[0039] 1. Nuclear power plant 2...Display device 10...Monitoring device 11. Data Acquisition Unit 12... Judgment section 13. Display Control Unit 14. Audio output section 15...Storage section 900... Computer 901···CPU 902...Main memory 903...Auxiliary storage device 904... Input / Output Interface 905...Communication Interface

Claims

1. A data acquisition unit that acquires plant operation data, A determination unit determines whether or not the aforementioned emergency has occurred in the plant, based on relevant data that defines an emergency that occurs when the operating data meets a predetermined condition and the state in which the predetermined condition is met continues for a predetermined time, and the operating data acquired by the data acquisition unit. When the determination unit determines that the emergency has occurred, the display control unit displays the occurrence of the emergency, Equipped with, The display control unit displays the remaining time until the predetermined time has elapsed or the elapsed time since the predetermined condition was met, from the time the operating data met the predetermined condition until the predetermined time has elapsed. monitoring equipment.

2. When the determination unit determines that the emergency has occurred, the voice output unit notifies the occurrence of the emergency via voice output. The monitoring device according to claim 1, further comprising:

3. The display control unit displays the percentage of time elapsed from the time the operating data satisfies the predetermined conditions until the predetermined time has elapsed. The monitoring device according to claim 1 or claim 2.

4. The display control unit displays the time when the operating data satisfies the predetermined conditions. The monitoring device according to claim 1 or claim 2.

5. When the determination unit determines that the emergency has occurred, The display control unit displays the time at which it was determined that the emergency occurred. The monitoring device according to claim 1 or claim 2.

6. The display control unit displays the remaining time in hours and minutes if the remaining time until the predetermined time has elapsed is equal to or greater than a threshold, and displays the remaining time in hours, minutes, and seconds if it is less than the threshold. The monitoring device according to claim 1 or claim 2.

7. A display method performed by a computer, Steps to acquire plant operating data, A step of determining whether or not the emergency has occurred in the plant, based on relevant data that defines an emergency that occurs when the operating data meets a predetermined condition and the state in which the predetermined condition is met continues for a predetermined time, and the operating data acquired in the acquisition step, The steps include displaying the remaining time until the predetermined time has elapsed or the elapsed time since the predetermined conditions were met, from the time the operating data met the predetermined conditions until the predetermined time has elapsed, If it is determined in the determination step that the emergency has occurred, the step of displaying the occurrence of the emergency is performed. A method for displaying with thumbnails.

8. On the computer, Steps to acquire plant operating data, A step of determining whether or not the emergency has occurred in the plant, based on relevant data that defines an emergency that occurs when the operating data meets a predetermined condition and the state in which the predetermined condition is met continues for a predetermined time, and the operating data acquired in the acquisition step, The steps include displaying the remaining time until the predetermined time has elapsed or the elapsed time since the predetermined conditions were met, from the time the operating data met the predetermined conditions until the predetermined time has elapsed, If it is determined in the determination step that the emergency has occurred, the step of displaying the occurrence of the emergency is performed. A program that executes the command.

Images