JP2016205864A - Nuclear power plant training system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nuclear power plant training system which allows a highly realistic training with an emergency response center and an emergency control room of the actual plant involved.SOLUTION: A training system 10 for a nuclear power plant 50 includes: a monitoring network 18 for transmitting plant data which is input/output at a central control room 51 of the nuclear power plant 50; a simulation calculation part 20 for virtually structuring plant equipment 53 and specific accident support equipment 11 provided in the nuclear power plant 50 and simulating various types of operation states in the set plant so as to generate simulation plant data; a training network 24 for transmitting the simulation plant data; and changeover switches 25a and 25b for connecting at least either an emergency response center 12 or an emergency control room 15 connected to the monitoring network 18 to the training network 24 in the plant training.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a nuclear power plant training system that trains operators to appropriately cope with emergency situations such as severe accidents (severe accidents).

  Existing nuclear plant training facilities include a training control panel that simulates a central control room that controls plant equipment, a simulator computer that simulates various plant operating conditions such as normal, periodic tests, abnormalities, and accidents. It is comprised by the combination of.

In plant training, the simulator computer outputs a simulation signal corresponding to the plant operating state set to the training control panel, and displays instructions, records, alarms, and the like on the monitoring terminal of the training control panel. On the other hand, the operator executes a driving operation from the operation terminal of the training control panel and outputs an operation / control signal to the simulator computer.
Then, the simulator computer outputs a simulation signal of the plant state reflecting the operation result of the operator to the training control panel, and updates information such as instructions, records, and alarms of the monitoring terminal of the training control panel.

  Thus, plant training is carried out by repeating the simulation of the operation state of the nuclear power plant by the simulator computer and the operation by the operator.

  Conventionally, various training systems have been studied so that operators can carry out highly realistic training that is close to actual driving conditions. For example, a control panel and simulator computer of a central control room that performs control of plant equipment. Is connected online, and a plant operation training system is disclosed in which training is performed by simulating a change in the state of a plant in a simulator using operation information from a control panel of an actual machine.

JP-A-6-231109

  By the way, nuclear plants require high safety standards and are independent of the central control room in order to deal with severe accidents caused by natural disasters such as earthquakes and tsunamis, and emergency situations due to intentional aircraft collisions. Emergency response center and emergency control room will be established. With these facilities as bases, accidents are converged by driving and controlling specific accident response facilities provided to respond to emergency situations.

  For this reason, in order to ensure that operators can respond accurately and flexibly in the event of an emergency situation, training including emergency response centers and emergency control rooms will be implemented, and the technology and knowledge for responding to an operator's emergency will be provided. , It is necessary to increase cooperation in advance.

  However, the existing nuclear power plant training facilities are targeted for plant training centered on the central control room, and did not fully implement plant training including the emergency response center and emergency control room. .

  A method of installing a simulation computer in each of the emergency response center and emergency control room and conducting plant training is conceivable. However, this method combines an emergency response center and an emergency control room. Training cannot be carried out.

  The present invention has been made in consideration of such circumstances, and provides a training system for a nuclear power plant capable of carrying out highly realistic training including an emergency control room of an actual machine and an emergency countermeasure center. Objective.

  A training system for a nuclear power plant according to the present embodiment is a training system for a nuclear power plant that responds to an emergency that has occurred in the plant by using a specific accident response facility, an emergency response center, and an emergency control room. A monitoring network that transmits plant data that is input and output in the central control room of the plant, the plant equipment provided in the nuclear power plant, and the specific accident response facility are virtually constructed and set in various operating states of the plant A simulation calculation unit that generates simulated plant data, a training network that transmits the generated simulated plant data, and the emergency countermeasure station that is connected to the monitoring network during training of the plant and Connect at least one of the emergency control rooms to the training network. Characterized in that it and a changeover switch for.

  The embodiment of the present invention provides a training system for a nuclear power plant capable of performing highly realistic training including an emergency control room of an actual machine and an emergency countermeasure center.

The figure which shows the structure of the training system which concerns on 1st Embodiment applied to a nuclear power plant (at the time of normal monitoring). The figure which shows the state of the training system which concerns on 1st Embodiment at the time of plant training. The flowchart which shows operation | movement in the case of training an emergency in a nuclear power plant. The figure which shows the structure of the training system which concerns on 2nd Embodiment applied to a nuclear power plant. The figure which shows the structure of the training system which concerns on 3rd Embodiment applied to a nuclear power plant.

(First embodiment)
Hereinafter, this embodiment is described based on an accompanying drawing.
As shown in FIG. 1, the training system 10 of the nuclear power plant 50 according to the first embodiment includes a monitoring network 18 that transmits plant data s input / output in the central control room 51 of the nuclear power plant 50, and the nuclear power plant 50. A simulation calculation that virtually constructs the installed plant equipment 53 and the specific accident response equipment 11, simulates various operating states of the set plant, and generates simulated plant data s ′ (see FIG. 2). Unit 20, a training network 24 for transmitting the generated simulated plant data s', and at least one of the emergency countermeasure center 12 and the emergency control room 15 connected to the monitoring network 18 at the time of plant training, the training network And a changeover switch 25 (25a, 25b) to be connected to 24.

  The present embodiment is applied to a nuclear power plant 50 that responds to an emergency using the specific accident response equipment 11, the emergency response center 12, and the emergency control room 15. The specific accident response facility 11, the emergency response center 12, and the emergency control room 15 are set in accordance with the safety standards of the nuclear power plant 50, and are independent of the central control room 51 and the reactor building 52. Installed.

  An emergency is a severe accident caused by a natural disaster such as an earthquake or tsunami (for example, an accident in which the core or nuclear fuel is seriously damaged), or a plant device in the reactor building 52 due to an intentional aircraft collision. It means a state in which control of the plant equipment 53 from the central control room 51 becomes difficult due to damage to the 53 or a radiation dose in the building.

  The specific accident response facility 11 is an accident convergence facility provided for converging an emergency that has occurred in the reactor building 52. Examples of the specific accident response facility 11 include an emergency power supply, an emergency pump, and a water discharge pump.

  The specific accident response equipment 11 is stopped during normal plant operation, and is driven and controlled by the emergency control room 15 when an emergency occurs in the reactor building 52. In FIG. 1, the specific accident response facility 11 is installed outside the reactor building 52, but facilities and equipment installed inside the reactor building 52 are also included.

  The emergency countermeasure center 12 is a place where a deployed conductor and a plurality of operators make decisions on an accident convergence method when an emergency occurs in the plant. The conductor deployed at the emergency response center 12 is not always required to be stationed at the emergency response center 12, and is deployed when an event that causes an emergency such as an earthquake or tsunami occurs.

  The emergency response center 12 receives a plant data s transmitted via the monitoring network 18 and a command output unit 14 that outputs a command signal t based on the accident convergence method determined by the conductor. And.

  The emergency control room 15 is provided with a plurality of operators when an emergency occurs in the plant, and controls the specific accident response equipment 11 corresponding to the command signal t issued from the emergency response center 12. It is a place to carry out.

  The emergency control room 15 receives a command signal t transmitted through the monitoring network 18 and a control unit 17 that outputs a control signal u of the specific accident response equipment 11 corresponding to the command signal t. And.

  In FIG. 1, the monitoring network 18 is used for signal transmission between the emergency response center 12 and the emergency control room 15, but a network directly connecting these bases is separately provided for signal transmission. May be performed.

  The training facility 19 is a facility used at the time of plant training. The training control panel 21 configured by simulating the control panel in the central control room 51, the plant equipment 53, and the specific accident response facility 11 are virtually provided. And a simulation calculation unit 20 configured to simulate various operation states of the plant set by the operator during training.

  The training system 10 monitors normal plant operation and performs plant convergence when an emergency situation occurs in a building and responds to the convergence of an accident, and when performing plant training using the training equipment 19 It can be divided into two operations. Each operation is switched using the changeover switch 25.

  The change-over switch 25 is a switch for switching the network connected to the emergency response center 12 and the emergency control room 15, and during normal plant monitoring, the AB is connected to the monitoring network 18 and connected to the monitoring network 18 to train the plant. Occasionally, AC is connected and connected to the training network 24.

  Here, the operations during normal plant monitoring and during plant training will be specifically described.

First, the operation during plant monitoring will be described.
The central control room 51 inputs plant signals from various plant devices 53 provided in the reactor building 52. And based on this plant signal, a control signal is output to the plant apparatus 53, and stable plant control is implemented.

  The monitoring network 18 is connected to the central control room 51 and relates to plant control such as plant signals and control signals input and output in the central control room 51, detection signals of sensors installed in the plant equipment 53, alarm signals, and the like. It is a network for transmitting various plant data s. The plant data s is transmitted to the emergency countermeasure station 12 via the monitoring network 18.

  The first receiver 13 of the emergency response center 12 receives the plant data s transmitted via the monitoring network 18.

The conductor deployed at the emergency response center 12 monitors the plant data s and determines an accident convergence method according to the magnitude, degree, and type of the accident when an emergency occurs in the plant.
And the command output part 14 outputs the command signal t (For example, ON / OFF of an emergency power supply, the operation start of a water discharge pump, etc.) based on the accident convergence method determined by the conductor. The output command signal t is transmitted to the emergency control room 15.

  The second receiver 16 of the emergency control room 15 receives the command signal t transmitted via the monitoring network 18.

The control unit 17 outputs a control signal u of the specific accident handling equipment 11 corresponding to the command signal t.
The control operation is executed by an operator deployed in the emergency control room 15 when an emergency situation occurs. Then, the emergency countermeasure center 12 and the emergency control room 15 cooperate to execute the control of the specific accident response facility 11 to converge the emergency that occurred in the building.

Next, the plant training will be described with reference to FIG.
During plant training, the changeover switch 25 is switched from AB to AC conduction. As a result, the emergency countermeasure center 12 and the emergency control room 15 connected to the monitoring network 18 are connected to the training network 24. The changeover switch 25 is switched from the monitoring network 18 to the training network 24 by manual operation by an operator in order to avoid malfunction.

  Note that when the training can be performed only by the control panel 21 for training such as normal operation and regular test, it is not necessary to switch from the monitoring network 18 to the training network 24.

  Each of the emergency countermeasure center 12 and the emergency control room 15 includes an auxiliary receiving unit 26 (26a, 26b) that receives plant data s transmitted through the monitoring network 18. By providing the auxiliary receiving unit 26, the plant data s is received even during plant training, and the operation state of the plant can be monitored by a conductor or an operator deployed at each base.

  The simulation calculation unit 20 of the training facility 19 virtually constructs the plant equipment 53 and the specific accident response facility 11 of the nuclear power plant 50. And the simulation calculation part 20 performs simulation of various plant states, such as normal operation of a plant, a periodic test, an abnormal situation, and an emergency, using these apparatuses constructed | assembled virtually according to a plant state. The simulated plant data s ′ is generated. The plant state for executing the simulation is set by the operator.

  The training network 24 is connected to the simulation calculation unit 20 and is a network that transmits the simulation plant data s ′ generated by the simulation calculation unit 20.

  When plant conditions such as normal operation and periodic tests other than emergency situations are simulated, the person to be trained performs training using the control panel 21 for training.

  Specifically, when the simulated plant data s ′ is generated by the simulated calculation unit 20, instructions, records, alarms, and the like are displayed on the monitoring terminal 23 of the training control panel 21. On the other hand, the training subject executes a driving operation from the operation terminal 22 of the training control panel 21 and outputs an operation / control signal to the simulation calculation unit 20.

  Then, the simulation calculation unit 20 executes a simulation of the plant state reflecting the operation result of the training subject, outputs the simulated plant data s ′ generated again to the training control panel 21, and instructs the monitoring terminal 23. Update information such as records and alarms. Thus, plant training is implemented by repeating the simulation by the simulation calculation unit 20 and the driving operation by the operator.

  Next, a case where an emergency situation is simulated by the simulation calculation unit 20 will be described. First, the simulation calculation unit 20 simulates a severe accident caused by a natural disaster such as an earthquake or a tsunami, or an emergency situation due to an intentional aircraft collision, and generates simulation plant data s ′ corresponding to the emergency situation.

  The first receiver 13 of the emergency response center 12 receives the simulated plant data s ′ via the training network 24.

  The trainer deployed at the emergency response center 12 monitors the simulated plant data s ′ and determines the accident convergence method according to the magnitude, degree, and type of the emergency simulated by the simulated calculation unit 20. The command output unit 14 outputs a simulated command signal t ′ based on the accident convergence method determined by the conductor. The output simulation command signal t ′ is transmitted to the emergency control room 15.

  The second receiver 16 of the emergency control room 15 receives the simulation command signal t ′ transmitted through the training network 24.

  The control unit 17 outputs a simulation control signal u ′ of a specific accident response facility (virtually constructed by the simulation calculation unit 20) corresponding to the simulation command signal t ′. The control operation is executed by a training subject deployed in the emergency control room 15.

  Then, the simulation calculation unit 20 executes a simulation of the plant state reflecting the control result of the training subject, and outputs the generated simulation plant data s ′ to the emergency countermeasure center 12 via the training network 24.

  The trainees deployed in the emergency response center 12 and the emergency control room 15 cooperate to repeat the simulation command and simulation control on the virtual specific accident response equipment 11 to perform accident convergence training.

  FIG. 2 is a flowchart showing an operation in training an emergency situation (see FIG. 1 as appropriate).

  The operator switches from the monitoring network 18 to the training network 24 using the changeover switch 25 (S10).

  In the simulation calculation unit 20, an emergency is set by the operator as the plant state to be simulated (S11).

  And the simulation calculation part 20 produces | generates the simulation plant data s' according to the emergency (S12).

  The first receiver 13 of the emergency response center 12 receives the simulated plant data s ′ via the training network 24. The trainer deployed in the emergency response center 12 determines the accident convergence method according to the magnitude, degree, and type of the emergency simulated by the simulation calculator 20.

The command output unit 14 outputs a simulated command signal t ′ based on the accident convergence method determined by the conductor (S13).
The second receiving unit 16 of the emergency control room 15 receives the simulation command signal t ′ transmitted via the training network 24.

The control unit 17 outputs a simulation control signal u ′ of the specific accident response facility (virtually constructed by the simulation calculation unit 20) corresponding to the simulation command signal t ′ (S14).
And the simulation calculation part 20 performs the simulation of a plant state reflecting the training subject's control result, and produces | generates simulation plant data s' again.

Then, until the emergency situation simulated by the simulation calculation unit 20 is converged, the simulation command signal t ′ and the simulation control signal u ′ are repeatedly output for training (S15: NO, S12 to S14).
On the other hand, when the emergency has converged, the emergency simulation is terminated (S15: YES, S16).

  After completion of the simulation, the operator switches from the training network 24 to the monitoring network 18 by using the changeover switch 25 and ends the training (S17).

  In this way, by switching the network connection and connecting the emergency countermeasure center 12 and the emergency control room 15 to the training equipment 19, the presence of the presence of the sense of presence in which the emergency countermeasure center 12 and the emergency control room 15 are linked. High plant training can be implemented, and operators can improve their skills, knowledge and cooperation in response to emergencies.

  Moreover, since this embodiment can be realized by laying the training network 24 and adding the changeover switch 25 to the existing equipment, it can be configured without a large-scale equipment change of the plant.

  During plant training, the changeover switch 25 (25a, 25b) does not need to connect both the emergency countermeasure center 12 and the emergency control room 15 to the training network 24, and controls the plant equipment 53 from the central control room 51. Assuming that this is possible, only one of the emergency countermeasure center 12 and the emergency control room 15 may be connected to the training network 24.

  As a result, plant training only between two bases, such as plant training between the training facility 19 and the emergency response center 12 or plant training between the training facility 19 and the emergency control room 15, is possible. It can also be implemented.

(Second Embodiment)
FIG. 4 shows the configuration of the training system 10 according to the second embodiment applied to the nuclear power plant 50. Components corresponding to those of the first embodiment are denoted by the same reference numerals, and description of overlapping operations is omitted. In FIG. 4, the auxiliary receiving unit 26 shown in FIG. 1 is omitted.

  The training system 10 in the second embodiment is different from the first embodiment in that the emergency response center 12 outputs a training stop signal v to the changeover switch 25 when an event causing an emergency situation is detected. An event detection unit 27 is provided, and the changeover switch 25 automatically switches the connection from the training network 24 to the monitoring network 18 when the training stop signal v is output from the event detection unit 27 during plant training. is there.

  The event detection unit 27 previously receives a warning signal or a warning signal generated in the plant due to an external event such as an earthquake, tsunami, intentional aircraft collision, an internal event such as a failure of the plant equipment 53 or an unexpected stop. Register and detect an event that causes an emergency when a warning signal or warning signal is generated. And the event detection part 27 outputs the training stop signal v to the changeover switch 25 with respect to the changeover switches 25a and 25b.

  The changeover switch 25 automatically switches the connection from the training network 24 to the monitoring network 18 when the training stop signal v is output from the event detection unit 27 of the emergency response center 12 during plant training. As a result, the training state is forcibly shifted to the monitoring state. At this time, the emergency response center 12 and the emergency control room 15 that were at the time of plant training are automatically changed to an initial monitoring state in order to respond to an emergency.

  In addition, the event detection unit 27 outputs the training stop signal v to the central control room 51, the emergency countermeasure center 12, and the emergency control room 15 to notify the occurrence of an emergency.

  As described above, in the training system 10, when an event that causes an emergency occurs during plant training, the connection is automatically switched to the monitoring network 18 to shift to an emergency. As a result, it is possible to promptly respond to an emergency situation by an operator who is conducting training at the emergency countermeasure center 12 and the emergency control room 15.

(Third embodiment)
FIG. 5 shows the configuration of the training system 10 according to the third embodiment applied to the nuclear power plant 50. Components corresponding to those of the first embodiment are denoted by the same reference numerals, and description of overlapping operations is omitted. In FIG. 5, the auxiliary receiving unit 26 shown in FIG. 1 is omitted.

    The training system 10 in the third embodiment is different from the first embodiment in that the emergency response center 12 records the plant data s transmitted via the monitoring network 18 during plant monitoring, and the plant And a training simulator 29 that predicts the behavior of the simulated plant data s ′ transmitted via the training network 24 based on the recorded plant data s during training.

  The data recording part 28 is provided in the 1st receiving part 13, and records the plant data s transmitted via the monitoring network 18 at the time of plant monitoring. The plant data s is recorded in the data recording unit 28 while being distinguished from each other according to the operation state of the plant, such as during normal plant operation, emergency occurrence, and the like.

  The training simulator 29 predicts the behavior of the simulated plant data s ′ transmitted from the training facility 19 using the recorded plant data s during plant training. Specifically, the time until the plant state deteriorates, the transition of data, etc. are predicted using the plant data s at the time of occurrence of an emergency.

  The training simulator 29 predicts the behavior of the simulated plant data s ′ using the actual plant data s, so that the emergency control room can be used in the emergency response center 12 in an environment close to the actual plant operating state. Training to command 15 can be implemented.

  The data recording unit 28 may be configured to record the behavior of the simulated plant data s ′ during plant training, and the training simulator 29 may predict the behavior of the plant data s during plant monitoring. As a result, it can also be used as a support function for emergency accident response such as prediction of severe accident progress and procedure selection.

  According to the nuclear plant training system of each embodiment described above, the emergency countermeasure center of the actual machine is connected by connecting the emergency countermeasure station and the emergency control room to the training facility via the training network during plant training. In addition, it is possible to carry out plant training with a high sense of presence including the emergency control room.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Nuclear plant training system, 11 ... Specified accident response equipment, 12 ... Emergency response center, 13 ... First receiving part, 14 ... Command output part, 15 ... Emergency control room, 16 ... Second receiving part, 17 ... Control unit, 18 ... Monitoring network, 19 ... Training equipment, 20 ... Simulation calculation unit, 21 ... Training control panel, 22 ... Operation terminal, 23 ... Monitoring terminal, 24 ... Training network, 25 (25a, 25b) ... Switching Switch, 26 (26a, 26b) ... auxiliary receiving unit, 27 ... event detecting unit, 28 ... data recording unit, 29 ... training simulator, 50 ... nuclear power plant, 51 ... central control room, 52 ... reactor building, 53 ... Plant equipment, s ... plant data, t ... command signal, u ... control signal, s' ... simulated plant data, t '... simulated command signal, u' ... simulated control signal, v ... training stop signal.

Claims (5)

A training system in a nuclear power plant that responds to an emergency situation that has occurred in the plant using a specific accident response facility, emergency response center, and emergency control room,
A monitoring network for transmitting plant data input and output in the central control room of the nuclear power plant;
Virtually constructing the plant equipment and the specific accident response facility provided in the nuclear power plant, simulating various operating states of the set plant, generating a simulated plant data,
A training network for transmitting the generated simulated plant data;
A switch for connecting at least one of the emergency countermeasure station and the emergency control room connected to the monitoring network to the training network at the time of training of the plant; Training system. The emergency response center has a command output unit that outputs a simulated command signal for converging the emergency when the emergency is simulated in the simulated calculation unit during plant training,
The emergency control room has a control unit that outputs a simulation control signal of the specific accident response facility constructed virtually corresponding to the simulation command signal output from the command output unit. The nuclear power plant training system according to claim 1.   3. The nuclear power plant according to claim 1, wherein the emergency countermeasure center and the emergency control room further include an auxiliary receiving unit that constantly receives plant data transmitted via a monitoring network. 4. Training system. The emergency response center has an event detection unit that outputs a training stop signal to the changeover switch when an event that causes the emergency situation is detected,
The switching switch automatically switches the connection from the training network to the monitoring network when the training stop signal is output from the event detection unit during the training of the plant. The nuclear power plant training system according to claim 3. The emergency countermeasure station is a data recording unit for recording the plant data transmitted through the monitoring network;
A training simulator for predicting the behavior of the simulated plant data transmitted through the training network using the recorded plant data during the training of the plant. Item 5. The nuclear power plant training system according to any one of Items 4 to 5.

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