JP6738589B2 - Data recording system for nuclear power plant - Google Patents

Description

The present invention relates to a data recording system for a nuclear power plant used in a nuclear power plant or a reprocessing facility.

For example, in a nuclear power plant, it is necessary to record operation data and management data for a nuclear reactor, and for example, a data recording device is installed in a central control room or a measurement control room. The data recording device constantly records the operational data and management data of the reactor during operation.

An example of such a data recording device is described in the following patent document.

International Publication No. 2003/100678

The data recording device constantly records the operation data of the reactor during operation, and it is necessary to continuously record the operation data even when a disaster occurs, and thereafter it is useful for the accident verification of the nuclear power plant. However, a general data recording device has a problem that it is not durable against radiation and cannot record sufficient data.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a data recording system for a nuclear power plant that improves radiation resistance.

The data recording system for a nuclear power plant of the present invention to achieve the above object is a control device for controlling a nuclear power plant, a device for operating and detecting the operating state of the nuclear power plant, and a radiation shielding member covering the device. And a data recording device capable of recording data of the device.

Therefore, by covering the data recording device with the radiation shielding member, it is possible to properly record the data of the control device and equipment even in the event of a disaster at the nuclear plant, ensuring sufficient radiation resistance. It is possible to improve reliability.

In the data recording system for a nuclear power plant of the present invention, the data recording device has a data collecting unit connected to the control device and the device, and a data recording unit connected to the data collecting unit. There is.

Therefore, the data collection unit collects the data in the control device and the device, and the data recording unit records the collected data, so that the data can be properly recorded.

In the data recording system for a nuclear power plant of the present invention, the data recording device has a built-in battery.

Therefore, since the data recording device has a built-in battery, various data can be properly recorded even if the power supply device fails in the event of a disaster.

The data recording system for a nuclear power plant of the present invention is characterized in that it is provided with a transmitting/receiving device for taking out the data recorded in the data recording device from the outside.

Therefore, even if it becomes difficult to recover the data recording device in the event of a disaster, various recorded data can be retrieved wirelessly.

In the data recording system for a nuclear power plant of the present invention, the data recording device collects specific data at an arbitrary cycle when receiving the disaster occurrence signal from the control device.

Therefore, since the recording of the required data starts based on the disaster occurrence signal, the required data can be properly recorded.

In the data recording system for a nuclear power plant of the present invention, the nuclear power plant is a nuclear power plant, and the data recording device is installed in a reactor building.

Therefore, even when a severe accident occurs in a nuclear reactor, necessary data can be properly recorded.

According to the data recording system for a nuclear power plant of the present invention, since the data recording device which is covered with the radiation shielding member and can record the data of the control device and the equipment is provided, the sufficient radiation resistance is secured and the reliability is improved. can do.

FIG. 1 is a layout diagram of a data recording system for a nuclear power plant according to this embodiment. FIG. 2 is a schematic configuration diagram of a data recording system for a nuclear power plant. FIG. 3 is a sectional view of the data recording device. FIG. 4 is a schematic diagram showing a nuclear power plant.

Hereinafter, preferred embodiments of a data recording system for a nuclear power plant of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to this embodiment, and when there are a plurality of embodiments, the present invention also includes those configured by combining the embodiments.

FIG. 4 is a schematic diagram showing a nuclear power plant.

In the nuclear power plant of the present embodiment, as shown in FIG. 4, a reactor building 101, a reactor auxiliary building 102, and a turbine building 103 are installed, and the reactor building 101 and the reactor auxiliary building 102 have seismic design, respectively. Is becoming In the reactor building 101, a reactor containment vessel 111 is installed, and a pressurized water reactor 112, a steam generator 113, etc. are stored inside. The reactor auxiliary building 102 is provided with a central control room 114 for controlling the pressurized water reactor 112, the steam generator 113 and the like, and a measurement control room for measuring and recording operation data of the pressurized water reactor 112 and the like. 115 is provided. In the turbine building 103, a steam turbine 116 driven by the steam generated by the steam generator 113 is arranged.

The data recording system for a nuclear power plant of this embodiment is mainly arranged in the reactor building 101. FIG. 1 is a layout diagram of a nuclear power plant data recording system of the present embodiment, FIG. 2 is a schematic configuration diagram of a nuclear power plant data recording system, and FIG. 3 is a sectional view of a data recording device.

As shown in FIG. 1, the reactor auxiliary building 102 is provided with a control device 11 for controlling a nuclear power plant in a central control room 114. Further, in the reactor auxiliary building 102, a first data recording device 12 that is connected to the control device 11 and records various data of the nuclear power plant is provided in the measurement control room 115. The first data recording device 12 is connected to a power supply device (not shown) and records all data in the nuclear power plant.

The reactor building 101 is provided with a second data recording device 21 that is connected to the control device 11 and records various data of the nuclear power plant. Further, the reactor auxiliary building 102 is provided with a second data recording device 22 which is connected to the control device 11 and records various data of the nuclear power plant. The second data recording devices 21 and 22 can record data of various devices that operate and detect the operating state of the nuclear power plant.

For example, the reactor building 101 includes a cooling water tank 31 capable of storing cooling water therein, a cooling water supply line 32 connected to the cooling water tank 31, a supply pump 33 and an opening/closing valve 34 provided in the cooling water supply line 32. Are arranged. The control device 11 can operate the supply pump 33 and the opening/closing valve 34. Further, a water level gauge 35 is attached to the cooling water tank 31, and a flow meter 36 is attached to the cooling water supply line 32.

A data recording device 37 is connected to the water level gauge 35, a data recording device 38 is connected to the flow meter 36 and the supply pump 33, and a data recording device 39 is connected to the opening/closing valve 34. The second data recording device 21 is composed of the data recording devices 37, 38, 39. Further, the nuclear reactor building 101 is internally provided with a wireless transmission/reception device 40, and an antenna 41 is connected thereto. Each of the data recording devices 37, 38, 39 is connected to the transmission/reception device 40 wirelessly (or by wire) and is also connected to the control device 11 by a transmission cable.

The transmission/reception device 40 is accessible to the outside of the reactor building 101, and various data recorded in the data recording devices 37, 38, 39 can be taken out from the external communication device via the transmission/reception device 40. In this case, the transmission/reception device 40 automatically operates upon receiving the disaster occurrence signal from the control device 11, and can transmit various data recorded in the data recording devices 37, 38, 39 to an external communication device. it can.

The equipment of the present embodiment is more compact than the conventional equipment, and the restrictions on the installation location are reduced. Conventionally, data is collected by installing it as a recording device panel in an instrument panel room, etc., and connecting it to a control device or on-site equipment/measuring instrument with a cable. On the other hand, in the present embodiment, the recording facility is made compact, and it can be installed in a section (site) where desired equipment and instruments exist, and data can be collected. Conventionally, all the recording functions are lost due to the failure of the recording device, but in the present embodiment, it is possible to prevent the total loss of the recording functions by distributing the functions.

The data recording devices 37, 38, 39 have substantially the same configuration. As shown in FIG. 2, the data recording devices 37, 38, 39 have a data collection unit 51 and a data recording unit 52. The data collection unit 51 is connected to the control device 11 via a transmission cable 53. Further, in the data collection unit 51, various devices, that is, the supply pump 33, the opening/closing valve 34, the water level meter 35, and the flow meter 36 are connected to the signal processing unit 54. The data collection unit 51 collects plant data from the control device 11 and various devices (the supply pump 33, the opening/closing valve 34, the water level meter 35, the flow meter 36) and transmits the plant data to the data recording unit 52. The data recording unit 52 records the plant data transmitted from the data collection unit 51.

The data collecting unit 51 has a microprocessor, collects preset specific data in the plant data at an arbitrary cycle when receiving the disaster occurrence signal from the control device 11, and the data recording unit 52 specifies the specific data. Data is recorded over time. The plant data collected by the data collecting unit 51 includes, for example, cooling water level, cooling water supply amount, reactor pressure, reactor temperature, neutron amount, and other analog signals, equipment operation signals, interlock signals, alarms, and the like. Is a digital signal.

The data recording devices 37, 38, 39 are covered with radiation shielding members so that the plant data can be recorded. That is, as shown in FIG. 3, in the data recording devices 37, 38 and 39, the shock absorbing layer (foamed resin) 62, the heat insulating layer (ceramic material) 63, the exterior (metal steel plate) 64, the radiation on the outside of the recording medium 61. A shield layer (lead, iron plate) 65 is arranged. The impact absorbing layer 62 is made of urethane foam or styrofoam, and can protect the recording medium 61 against impacts and pressure from the outside. The heat insulating layer 63 is made of a ceramic material such as calcium silicate and can protect the recording medium 61 against heat from the outside. The exterior (metal steel plate) 64 is made of a stainless steel plate, and can protect the recording medium 61 against momentary impact and external force from heavy objects or water that continues for a long time. The radiation shielding layer 65 can protect the recording medium 61 by shielding radiation.

Further, the data recording devices 37, 38, 39 have built-in batteries. That is, as shown in FIG. 2, the battery 55 is provided adjacent to the data collection unit 51. Therefore, even if the plant loses all AC power, power can be supplied to the data recording devices 37, 38, 39 to record the parameters. That is, when all AC power is lost, the data can be stored while the data recording in the permanent recording facility is lost. Especially, the data before and after the accident is very important in the analysis of the cause of the accident. In normal times, power is supplied from the plant power supply facility, and after the plant power supply is lost, for example, the recording device is operated for up to 24 hours.

As described above, in the nuclear power plant data recording system of the present embodiment, the control device 11 that controls the nuclear power plant, and the devices that operate and detect the operating state of the nuclear power plant (the supply pump 33, the on-off valve 34, Water level gauge 35, flow meter 36) and a second data record that is covered by the radiation shielding layer 65 and is capable of recording data of the control device 11 and equipment (supply pump 33, on-off valve 34, water level meter 35, flow meter 36). It has devices 21, 22 (data recording devices 37, 38, 39).

Therefore, by covering the data recording devices 37, 38, 39 with the radiation shielding layer 65, the data of the control device 11 and the like can be properly recorded even when a disaster occurs in the nuclear power plant. It is possible to secure sufficient radiation resistance and improve reliability.

In the data recording system for a nuclear power plant of the present embodiment, the data recording devices 37, 38, 39 include a data collection unit 51 connected to the control device 11 and the like, and a data recording unit 52 connected to the data collection unit 51. Have Therefore, the data collection unit 51 collects the data of the control device 11 and the like, and the data recording unit 52 records the collected data, so that the data can be properly recorded.

In the data recording system for a nuclear power plant of the present embodiment, the data recording devices 37, 38, 39 have built-in batteries. Therefore, since the data recording devices 37, 38, 39 have built-in batteries, various data can be properly recorded even if the power supply device fails in the event of a disaster.

The data recording system for a nuclear power plant of the present embodiment is provided with a transmission/reception device 40 for taking out the data recorded in the data recording devices 37, 38, 39 from the outside. Therefore, even if it becomes difficult to collect the data recording devices 37, 38, 39 in the event of a disaster, various recorded data can be retrieved wirelessly.

In the data recording system for a nuclear power plant of the present embodiment, the data recording devices 37, 38, 39 collect specific data at an arbitrary cycle when receiving the disaster occurrence signal from the control device 11. Therefore, since the recording of the required data starts based on the disaster occurrence signal, the required data can be properly recorded.

In the data recording system for a nuclear power plant of the present embodiment, the nuclear power plant is a nuclear power plant, and the data recording devices 37, 38, 39 are installed in the reactor building 101. Therefore, even when a severe accident occurs in a nuclear reactor, necessary data can be properly recorded.

In addition, in the above-mentioned embodiment, the data recording system for a nuclear power plant of the present invention has been described by applying it to a nuclear power plant having a pressurized water reactor, but the reactor may be a boiling water reactor. Good. Further, the nuclear power plant is not limited to the nuclear power plant, but may be applied to a reprocessing facility or an intermediate storage facility.

11 Control Device 12 First Data Recording Device 21, 22 Second Data Recording Device 31 Cooling Water Tank 32 Cooling Water Supply Line 33 Supply Pump (Device)
34 Open/close valve (equipment)
35 Water gauge (equipment)
36 Flowmeter (equipment)
37, 38, 39 Second data recording device 40 Transmitter/receiver device 51 Data collection part 52 Data recording part 65 Radiation shielding layer 101 Reactor building 102 Reactor auxiliary building 103 Turbine building 111 Reactor containment vessel 112 Pressurized water reactor 113 Steam generation Instrument 114 Central control room 115 Measurement control room

Claims (5)

It has a reactor building where the reactor containment vessel is installed and a reactor auxiliary building where the main control room is installed.
A control device provided in the reactor auxiliary building to control a nuclear power plant,
A device provided in the reactor building for performing operation of the nuclear power plant and a device for detecting an operating state,
A first data recording device provided in the reactor auxiliary building and connected to the control device, capable of recording all data of a nuclear plant;
A second data recording device provided in the reactor building, connected to the control device by a transmission cable, and covered with a radiation shielding member to record data of the device;
Have
The second data recording device has a data collecting unit connected to the control device and the device, and a data recording unit connected to the data collecting unit,
The data collection unit is capable gather data before Symbol device and the control device, the data recording unit is capable of recording data by the data collecting unit collects,
A data recording system for a nuclear power plant, which is characterized in that The data recording system for a nuclear power plant according to claim 1, wherein the second data recording device has a built-in battery. The data recording system for a nuclear power plant according to claim 1 or 2, further comprising a transmission/reception device that takes out the data recorded in the second data recording device from the outside. The said 2nd data recording device will collect specific data in an arbitrary period, if a disaster occurrence signal is received from the said control device, The nuclear power as described in any one of Claim 1 to 3 characterized by the above-mentioned. Data recording system for plants. The nuclear power plant according to claim 1, wherein the nuclear power plant is a nuclear power plant, and the second data recording device is installed in a reactor building. Data recording system.

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