JPH01132995A - Building for nuclear power plant - Google Patents

Abstract

PURPOSE:To maintain a computer for supervising an operation condition and the function of a central indicator panel indicating its output result even if a large earthquake occurs by setting a second building on the floor or the roof of the building through an earthquake controller and a damper. CONSTITUTION:An electric instrumentation appliances 11 for control, measurement and operation in regard to the operation and stop of a nuclear power plant and an electric instrumentation panel 10 housing these are housed in a central control building 1. The building 1 is made of reinforced concrete possessing a support structure of radiation shield and the electric instrumentation panel 10, its foundation is supported by ground 2 and made as a firm building structure for maintaining an atomic reactor in a safe condition even if a large earthquake occurs. In the building 1 a computer 20 for supervising the operation condition of a nuclear power plant and a central indicator panel 21 indicating its output result are housed in different buildings each other and supported with the building through an earthquake controller 23 and a damper 24. The earthquake controller 23 is formed of a laminated rubbers in which a thin rubber and a thin steel plate are laminated alternately and the damper 24 is formed of an adhesive damper and the like.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to improvements in nuclear power generation buildings.

(Prior Art) A nuclear couplant consists of a nuclear reactor, a turbine generator, their auxiliary equipment, and safety equipment.

A conventional nuclear power generation building that houses these devices and facilities will be explained with reference to FIG.

In Figure 8, 1 is called the central control building;
Inside this central control building 1, the operating status of the nuclear reactor, turbine generator, their auxiliary equipment, and safety auxiliary equipment is measured.
A computer 20 that monitors the operating state based on the measured data
and a central display panel 2 that displays the output results of this computer 20.
1 is stored.

Roughly speaking, the central control building 1 houses electrical instrumentation equipment 11 that performs control, measurement, and operation related to the shutdown of the nuclear power plant, and an electrical instrumentation panel 10 that houses this equipment. .

By the way, the central control building 1 is a reinforced concrete building that is composed of multiple floors and serves as a radiation shield and a support groove structure for the equipment. The foundation is supported by the ground 2, a shrine 4 is installed on the ground 2, a beam 5 is hung between the pillars 4, and an intermediate floor 3 is provided on the beam 5. 6 is a roof, and 7 is an outer wall. The building 1 has a strong building ditch to maintain the reactor in a safe state even in the event of a major earthquake. Also, among the equipment housed in the building 1, there is an electrical instrumentation device 11 for maintaining the reactor in a safe state in the event of a major earthquake, and an electrical instrumentation device that houses this instrument! ! A10 has a structure that is firmly supported by the intermediate floor 3 of the central control building 1.

By the way, even if the computer 20 and the central display panel 21 lose their functions in the event of a major earthquake, the operation of the nuclear power plant can be controlled from the electrical instrumentation panel 50, thereby improving the safety of the nuclear power plant. Since the computer 20 and the central display panel 21 are not particularly required to have earthquake resistance, those used in the general industry are used.

However, due to rapid advances in electronics technology in recent years, computers have become larger in capacity and faster, and central control display boards, which are rich in man-machine interfaces, are now being used to assist in the operation monitoring of nuclear power generation plants. It is used as an effective means to prevent erroneous judgments and erroneous operations in plant operation. Therefore, by improving the earthquake resistance of the computer 20 and the central control display panel 21, the main parameters of the reactor (reactor water level, pressure, etc.) and the operating status of main equipment can be monitored even in the event of a major earthquake. This makes it possible to improve the range of functions such as reactor monitoring.

(Problem to be solved by the invention) However, it is used in nuclear power plants to measure the operating status of nuclear reactors, turbine generators, their auxiliary equipment, and safety auxiliary equipment, and based on the measurement data, the operating status is A computer 20 for monitoring the computer and a central display panel 21 for displaying the output results of the computer are computers.

Auxiliary storage devices consisting of disk or drum structures, input/output devices, displays, keyboards, typewriters,
It consists of a console, coin printer, etc., and these component devices have a complex structure. Since the computer 20, the central control display panel 21, etc. are installed on the intermediate floor 3, they will be affected in the same way as the building 1 in the event of a major earthquake, so it will be difficult to maintain their performance. Ta.

The present invention has been made in view of the above circumstances, and its purpose is to provide computers and computers that measure the operating status of nuclear power plants and monitor the operating status based on the measured data, even in the event of a major earthquake. The present invention aims to provide a nuclear power generation building that can maintain the function of a central control display panel that displays output results.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a nuclear power generation system that houses a nuclear reactor, a turbine generator, their auxiliary equipment, safety auxiliary equipment, etc. In the building, a second building is installed on the floor or roof of the building via a seismic isolation device and a damping device.

(Function) In the nuclear power generation building of the present invention, in the event of a major earthquake, the partial seismic isolation building is accommodated and supported by the seismic isolation device and damping device installed at the bottom of the partially seismic isolation building. The response of the computer control panel becomes very small, and as a result,
Even in the event of a major earthquake, the functions of the computer and central control display panel will be maintained, making it possible to monitor the main parameters of the reactor (reactor water level, pressure, etc.) and the operating status of main equipment.

(Example) An example of the present invention will be described with reference to FIG. Note that the same parts as those in FIG. 8 already explained will be described with the same reference numerals.

In FIG. 1, electrical instrumentation equipment 11 that performs control, measurement, and operation related to the shutdown of a nuclear power plant, and an electrical instrumentation panel 10 that houses this equipment are housed in a central control building 1. It is supported by the intermediate floor 3 in the building 1, the base plate of the central control building 1', or the walls and ceiling of the central control building. This central control building 1 is a reinforced concrete building that serves both as a radiation shield and as a supporting structure for the electrical instrumentation panel. Its foundation is supported by the ground 2. A beam 5 is placed between the columns 4, and an intermediate floor 3 is provided on the beam 5. 6 is a roof, and 7 is an outer wall. Therefore, the building 1 has a strong building structure to keep the nuclear reactor in a safe state (R) even in the event of a major earthquake.

In the building @ 1, the computer 20 that monitors the operating status of the nuclear power plant and the middle pressure display panel 21 that displays the output results are located in a separate building 22, and the seismic isolation device 23 and damping device 24 are installed.
It is supported by the central control building 1 via. The seismic isolation device 23 is made of laminated rubber in which thin rubber and thin steel plates are alternately stacked. In addition, the damping device 2
4 is a viscous damper, or 1! ! It is composed of a friction damper, a hysteresis damper, or a combination of the above dampers.

Next, the operation of this embodiment will be explained.

For example, when a major earthquake occurs, seismic motion is transmitted from the ground 2 to the central control building, causing the building to shake significantly and the response speed of the building to increase.

On the other hand, since the partial seismic isolation building 22 is supported by the central control building 1 via the seismic isolation device 23 and the damping device 24, seismic motion is seismically isolated by the seismic isolation device 23 and the damping device 24. Ru. Therefore, the response acceleration of the partially seismically isolated building 22 can be kept low even in the event of a major earthquake, and the response of the computer 20 and the middle pressure display panel 21 housed and supported within this partially seismically isolated building 22 can also be kept low. . As a result, the functions of the computer 20 and the middle pressure display panel 21 are maintained even in the event of a major earthquake.
It becomes possible to monitor the main parameters of the reactor (reactor water level, pressure, etc.) and the operating status of the main equipment, improving the range of uses for the reactor monitoring function.

FIG. 2 shows the response acceleration distribution of the conventional central control building 1 during a major earthquake. This distribution shows how a building shakes during a major earthquake, with the horizontal axis representing the response acceleration of the building and the vertical axis representing the height.As shown by curve A, the response acceleration increases with height. I know that there is.

FIG. 3 shows the response acceleration distribution of the central control building 1 having the partially seismically isolated building 22 supported by the seismic isolation device 23 and damping device 24 of the present invention during a major earthquake.

The response of the central control building 1 with the partially seismically isolated building 22 is almost the same as the response of the conventional central control room without the partially seismically isolated building (curve A in Fig. 2), as shown by the curved line. Regarding the response, it can be seen that the response acceleration of the partially seismically isolated building 22 is greatly reduced as shown by the curve. For this reason,
The response of the computer 20 and the middle rubbing display panel 21 housed and supported within the partial isolation 1fl122 is also suppressed to a low level. the result,
Even in the event of a major earthquake, the functions of the computer 20 and the reactor display panel 21 are maintained, making it possible to monitor the main parameters of the reactor (reactor water level, pressure, etc.) and the operating status of the main equipment. It is possible to improve the range of utilization of the furnace monitoring function.

FIG. 4 is a longitudinal sectional view of another embodiment of the present invention, and FIG.
It is a horizontal sectional view seen from the AA line of the figure.

This embodiment differs from the above embodiments in that the partially seismically isolated building 22
The building in which the reactor 25 is supported is the reactor building 2 that houses the reactor 25
6, the reactor building annex 27 that is integrated with the reactor building 6 is sufficient to support the reactor building annex 27, so the same parts as in the previous embodiment are given the same reference numerals, and their detailed names will be omitted. If the electrical instrumentation equipment that controls, measures, and operates related to the shutdown of the nuclear power plant and the electrical instrumentation panel that houses this equipment are housed in the reactor building annex 27, the operating status of the nuclear power plant can be monitored. A computer for measuring and monitoring operating conditions based on the data and a central display panel for displaying the output results are also installed near the electrical instrumentation panel.

Even in such a case, by supporting the partial seismic isolation building 22 housing the computer and central display panel on the reactor building annex 22 via the seismic isolation device 23 and damping device 24, the partial seismic isolation building 22 housing the computer and central display panel can be supported in the event of a major earthquake. The response acceleration □ of the seismic isolation building 22, the computer housed and supported within the building, and the central display panel can be significantly reduced.

FIG. 6 is a partial sectional view of still another embodiment of the present invention, and FIG. 7 is a plan view taken along line B--B in FIG. 6. The difference between this embodiment and the first embodiment is that shock absorbers 28 are provided at the front, rear, left and right sides of the partial seismic isolation building 22, and when the displacement of the partial seismic isolation building 22 becomes large during a major earthquake, the partial seismic isolation This is to reduce the load on the earthquake building 22 and the central control building 1. Note that, except for this point, this embodiment is no different from the first embodiment, and the effects are also the same.

Further, as another embodiment, the diesel power generation equipment for supply, which is an emergency power source for the nuclear power plant, may be provided in a separate building. By doing so, the response in the event of a major earthquake can be reduced, and the safety of the nuclear power plant in the event of an earthquake can be improved.

[Effect of the invention 1 According to the present invention, a building is installed that houses a computer that measures the operating status of a nuclear power plant and monitors the operating status based on the data, as well as a central display panel that displays the output results. By equipping the lower part with a seismic isolation device and a damping device, even in the event of a major earthquake, the response acceleration can be reduced, and the response of the computer and central vibration display panel housed and supported within this partially seismic isolation building can be reduced. can be kept low. As a result, even in the event of a major earthquake, the functions of the N calculator and central pressure display panel are maintained, making it possible to monitor the main parameters of the reactor (reactor water level, pressure, etc.) and the operating status of main equipment. , it is possible to improve the range of utilization of reactor monitoring functions.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of an embodiment of the present invention, Fig. 2 is a diagram showing the response acceleration distribution of a conventional central control building during an earthquake, and Fig. 3 is a diagram showing the response of the partially seismically isolated building of the present invention during an earthquake. 13 and 5 are longitudinal cross-sectional views and plan views of other embodiments of the present invention, respectively, and FIGS. 6 and 7 are diagrams showing still other embodiments of the present invention, respectively. FIG. 8 is a cross-sectional view of a conventional central control building that constitutes a nuclear power plant. 1... Central control building 2... Ground, 3... Intermediate floor 4... Column,
5...Beam 6...Roof, 7...Outer wall 10...Electrical instrumentation panel 11...Electrical instrumentation equipment 20...Computer 21...Middle pressure display panel 22... Partial seismic isolation building 23...Seismic isolation device 24...Attenuation device 25...Reactor 26...Reactor building 27...Reactor building annex 28...Shock absorption device agent Patent attorney Noritaka Ken Yudo Daishimaru Kendai 1 Figure 5 Figure 6 Figure 7 Figure 8

Claims (3)

[Claims] (1) In a nuclear power generation building that houses nuclear reactors, turbine generators, their auxiliary equipment, safety auxiliary equipment, etc., a second building is installed on the floor or roof of the building via a seismic isolation device and a damping device. A nuclear power generation building characterized by: (2) The nuclear power generation building according to claim 1, wherein the second building houses at least a computer that monitors the operating status of the nuclear power plant and a central control display board that displays the output results thereof. . (3) The nuclear power generation building according to claim 1, wherein the second building is equipped with diesel power generation equipment that supplies emergency power for the nuclear power generation plant.