JP2017172281A - Building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reactor building with high safety properties capable of effectively preventing water from flowing into lower stories of the reactor building during a water disaster such as a tsunami or flood.SOLUTION: The reactor building includes: a storage tank 51 for storing fluid flowing in the building; and piping 41 disposed between the building and the storage tank 51 as a flow passage for the fluid. If the fluid flows into the building, the fluid flows in via the piping 41 and is stored in the storage tank 51.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a structure of a building, and more particularly to a building structure of a nuclear facility that is effective at the time of a water disaster such as a tsunami or flood.

  At nuclear facilities that have suffered significant damage from the tsunami attack during the Great East Japan Earthquake, protecting important equipment from the tsunami has become an issue. One such critical facility is the reactor isolation cooling system (RCIC).

  The RCIC (Reactor Core Isolation Cooling System) is a safety system that, when an abnormality occurs during normal operation, rotates the turbine drive pump with the steam of the reactor to inject cooling water into the reactor, removes the decay heat of the fuel, and reduces the pressure System. Also, it functions as an emergency water injection pump when the water supply system fails, and maintains the water level of the reactor.

  Generally, in a nuclear facility, this RCIC pump room is often installed on the lower floor of the nuclear facility. As a result, when inundation occurs on the upper floor where the large-sized carry-in entrance is installed, fluid such as seawater may flow from the upper floor to the lower floor, and the RCIC pump chamber may be submerged. Therefore, assuming a case where fluid flows into the upper floor of the building due to a tsunami, a method for preventing the fluid from flowing from the upper floor to the lower floor is required.

  As a background art in this technical field, for example, there is a technique such as Patent Document 1. Patent Document 1 discloses “an air conditioning duct including a water stop device that prevents water from entering the building through an air conditioning duct during a water disaster such as a tsunami or flood”.

JP 2014-228175 A

  As described in Patent Document 1, a method for preventing fluid from flowing into the building through the air conditioning duct by using a water stop device has been proposed, but as a system when the fluid has flowed into the building. Is insufficient.

  Accordingly, an object of the present invention is to effectively prevent the inflow of water into the lower floor of a reactor building at the time of a water disaster such as a tsunami or a flood, and provide a safer reactor building.

  In order to solve the above problems, the present invention includes a storage tank that stores a fluid flowing into a building, and a pipe that is provided between the building and the storage tank and serves as a flow path for the fluid. When the fluid flows into the building, the fluid that flows in is stored in the storage tank through the pipe.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to store the fluid which flowed into the nuclear facility at the time of tsunami attack in a storage tank, and to protect the installation installed in the lower floor from the position where the fluid flowed in from the fluid.

  As a result, the safety and reliability of the nuclear facility can be improved.

  Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a top view of the reactor building 1st floor in FIG. 1A. It is a top view of the reactor building 1st floor in FIG. 1A. It is a top view of the reactor building 2nd floor in FIG. 1A. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a schematic diagram which shows the net | network board which concerns on one Embodiment of this invention. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a top view of the reactor building 1st floor in FIG. 5A. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a top view of the reactor building 1st floor in FIG. 6A. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a top view of the reactor building 1st floor in FIG. 7A. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention. It is a figure showing the section structure of the reactor building concerning one embodiment of the present invention.

  Embodiments of the present invention will be described below with reference to the drawings. In each drawing and each embodiment, the same or similar components are denoted by the same reference numerals, and detailed description of overlapping portions is omitted.

  The building structure of the nuclear facility according to the first embodiment will be described with reference to FIGS. 1A to 3. In the present embodiment, a reservoir that stores the fluid that has flowed in from the large carry-in port, a water tank, and a staircase so that the fluid that has flowed from the large carry-in port does not flow into the RCIC pump room installed on the lower floor when the tsunami strikes. An example of a nuclear reactor building provided with piping connecting the chambers will be described.

  In this embodiment, in order to make the explanation easy to understand, the large-size entrance 11 is arranged on the first floor, the RCIC pump chamber 21 is arranged on the second basement floor, and the first floor is between the first floor and the second basement floor. A reactor building is assumed in which a staircase 30 serving as an inundation path between the first floor and the second floor is arranged, and a pipe 41 connected to the water storage tank 51 is connected to the staircase 30. Further, in the staircase 30, an openable door 34 is installed as necessary in order to prevent the fluid from flowing into the lower floor than the position where the pipe 41 is connected.

  In the present embodiment, the water storage tank 51 is a storage tank for storing fluid. The staircase room 30 is an area including a stairway and a landing for going back and forth between each floor of a building composed of at least two or more floors.

  FIG. 1A is a cross-sectional view of the first floor of the reactor building, the first floor of the reactor building, and the second floor of the reactor building according to the present embodiment. FIGS. 1B, 1C, and 1D are the reactors of the present embodiment, respectively. FIG. 3 is a plan view of the first floor of the building, a plan view of the first floor of the reactor building, and a plan view of the second floor of the reactor building. 1B, 1C, and 1D correspond to FIG. 1A. It can be seen that the reactor containment vessel 0 is arranged in the center of the reactor building.

  The fluid that has flowed in from the large material entrance 11 due to the tsunami first flows into the management area 10 on the first floor. When the first floor staircase door 31 is damaged, the fluid flows into the staircase 30.

  Here, when it is assumed that the pipe 41 connected to the water storage tank 51 is not connected to the staircase 30, the fluid flowing into the staircase 30 reaches the second floor of the staircase 30. Then, when the staircase door 33 on the second basement floor is damaged, the fluid flows into the management area 20 on the second basement floor. Further, when the RCIC pump chamber door 22 on the second basement floor is damaged, the fluid flows into the RCIC pump chamber 21.

  However, in the present embodiment, since the pipe 41 connected to the water storage tank 51 is connected in the middle of the staircase 30 serving as the inundation path, the inflowing fluid is stored in the water storage tank 51 through the pipe 41. In addition, the staircase 30 requires an openable door 34 that closes when fluid inflow to the reactor building is detected in order to prevent fluid from flowing into the lower floor than the position where the pipe 41 is connected. Install accordingly.

  For example, as shown in FIG. 1A, when the piping 41 is connected between the first floor of the staircase 30 and the first basement, the door 34 is installed on the first floor and the first basement. A door 34 is installed between the two. As shown in FIG. 2A, when the pipe 41 is connected between the first basement floor and the second basement floor of the staircase 30, a door 34 is installed between the first basement floor and the second basement floor of the staircase 30. To do. As shown in FIG. 2B, the door 34 is not installed when the pipe 41 is connected to the second basement level of the staircase 30.

  Further, in order to reduce the probability that the fluid flows into the RCIC pump chamber 21, a plurality of doors similar to the door 34 may be installed as shown in FIG. 2C. When doors 341 and 342 similar to the door 34 are installed as shown in FIG. 2C, even if fluid passes through the door 341 due to damage to the door 341, the door 342 prevents fluid from flowing into the lower floor. be able to. That is, by increasing the number of doors, the probability of fluid flowing into the RCIC pump chamber 21 can be reduced.

  A net 42 as shown in FIG. 3 is installed at the boundary between the piping 41 connected to the water storage tank 51 and the staircase 30 so that fluid can pass but humans cannot pass. The mesh plate 42 may be removable or not, but if it is removable, maintenance and the like can be performed efficiently. The purpose of preventing a person or the like from passing is to prevent a person or the like who passes through the staircase 30 from dropping into the water storage tank 51 through the pipe 41. Further, here, the mesh plate 42 as shown in FIG. 3 is shown as an example. However, a plate or door other than the mesh plate 42 that allows fluid to pass through but cannot pass through by humans may be used.

  In the reactor building of the present embodiment, even if the fluid flowing in from the large material entrance 11 flows into the staircase 30 due to damage to the staircase door 31 on the first floor, the fluid is stored in the water storage tank 51 through the pipe 41. . As a result, the fluid can be prevented from flowing into the RCIC pump chamber 21 on the second basement floor.

  Although FIG. 1B shows an example in which the staircase 30 is installed on the opposite side of the large carry-in entrance 11, the staircase 30 is arranged in a lateral direction with respect to the large carry-in entrance 11, that is, in any position above and below in FIG. 1B. May be provided.

  Further, in this embodiment, in order to make the explanation easy to understand, an example of the reactor building in which the inundation path is the RCIC pump chamber 21 on the second floor from the large material entrance 11 on the first floor is shown. This embodiment also includes a reactor building in which a pipe 41 connected to the water storage tank 51 is connected in the middle of the inundation path from the upper floor to the lower floor, assuming that it flows into the lower floor from the upper floor.

  In this embodiment, the reactor building is described as an example of the building. However, assuming that the fluid flows from the upper floor to the lower floor, the water storage tank is in the middle of the inundation path from the upper floor to the lower floor. Buildings of other nuclear facilities connected to the piping 41 connected to 51 are also included in this embodiment.

  The building structure of the nuclear facility of Example 2 will be described with reference to FIG. In the present embodiment, a reservoir that stores the fluid that has flowed in from the large carry-in port, a water tank, and a staircase so that the fluid that has flowed from the large carry-in port does not flow into the RCIC pump room installed on the lower floor when the tsunami strikes. An example of a reactor building provided with a plurality of pipes connecting the chambers will be described. In this embodiment, in order to make the explanation easy to understand, the large-size entrance 11 is arranged on the first floor, the RCIC pump chamber 21 is arranged on the second basement floor, and the first floor is between the first floor and the second basement floor. A reactor building is assumed in which a staircase 30 serving as an inundation path between the first floor and the second floor is disposed, and a plurality of pipes 41 of at least two systems connected to the water storage tank 51 are connected to the staircase 30. Further, in the staircase 30, an openable door 34 is installed as necessary in order to prevent the fluid from flowing into the lower floor than the position where the pipe 41 is connected.

  In the present embodiment, the water storage tank 51 is a storage tank for storing fluid. The staircase room 30 is an area including a stairway and a landing for going back and forth between each floor of a building composed of at least two or more floors.

  FIG. 4 is a cross-sectional view of the first floor of the reactor building, the first basement floor of the reactor building, and the second basement floor of the reactor building of this embodiment. Note that the plan view of the first floor of the reactor building, the plan view of the first floor of the reactor building, and the plan view of the second floor of the reactor building are the same as those in the first embodiment, and therefore will be omitted.

  The fluid that has flowed in from the large material entrance 11 due to the tsunami first flows into the management area 10 on the first floor. When the first floor staircase door 31 is damaged, the fluid flows into the staircase 30.

  Here, when it is assumed that the pipe 41 connected to the water storage tank 51 is not connected to the staircase 30, the fluid flowing into the staircase 30 reaches the second floor of the staircase 30. Then, when the staircase door 33 on the second basement floor is damaged, the fluid flows into the management area 20 on the second basement floor. Further, when the RCIC pump chamber door 22 on the second basement floor is damaged, the fluid flows into the RCIC pump chamber 21.

  However, in the present embodiment, since a plurality of pipes 41 connected to the water storage tank 51 are connected in the middle of the staircase 30 serving as the inundation path, the inflowing fluid is stored in the water storage tank 51 through the pipe 41. In addition, the staircase 30 requires an openable door 34 that closes when fluid inflow to the reactor building is detected in order to prevent fluid from flowing into the lower floor than the position where the pipe 41 is connected. Install accordingly. About the example of the installation position of the door 34, since it is the same as that of Example 1, description is abbreviate | omitted.

  At the boundary between the plurality of pipes 41 connected to the water storage tank 51 and the staircase 30, a fluid such as the net plate 42 that can pass the fluid as described in the first embodiment but cannot pass by humans or the like is installed. Since the explanation about this is also the same as that of the first embodiment, it will be omitted.

  In the reactor building of the present embodiment, even if the fluid that has flowed in from the large material entrance 11 flows into the staircase 30 due to damage to the staircase door 31 on the first floor, the water is stored in the water storage tank 51 through the plurality of pipes 41. Is done. As a result, the fluid can be prevented from flowing into the RCIC pump chamber 21 on the second basement floor. In this embodiment, unlike the first embodiment, a plurality of pipes 41 connected to the water storage tank 51 are connected to the staircase 30, so that the fluid may flow into the RCIC pump chamber 21 as compared to the first embodiment. Is considered low.

  In this embodiment, in order to make the explanation easy to understand, an example of the reactor building in which the inundation path is the RCIC pump chamber 21 on the second basement floor from the large entrance 11 on the first floor is shown, but the fluid flows from the upper floor to the lower floor. A reactor building in which a plurality of pipes 41 connected to the water storage tank 51 are connected in the middle of the inundation path from the upper floor to the lower floor is assumed to be inflow into the floor.

  In this embodiment, the reactor building is described as an example of the building. However, assuming that the fluid flows from the upper floor to the lower floor, the water storage tank is in the middle of the inundation path from the upper floor to the lower floor. Buildings of other nuclear facilities to which a plurality of pipes 41 connected to 51 are connected are also included in this embodiment.

  The building structure of the nuclear facility of Example 3 will be described with reference to FIGS. 5A and 5B. In the present embodiment, a reservoir that stores the fluid that has flowed in from the large carry-in port, a water tank and a large product so that the fluid that has flowed from the large carry-in port does not flow into the RCIC pump room installed on the lower floor when the tsunami strikes. An example of a reactor building provided with piping that connects the same floor to the carry-in port will be described. In this embodiment, in order to make the explanation easy to understand, the large-size entrance 11 is arranged on the first floor, the RCIC pump chamber 21 is arranged on the second basement floor, and the first floor is between the first floor and the second basement floor. A reactor building is assumed in which a staircase 30 serving as an inundation path between the first floor and the second floor is arranged, and a pipe 41 connected to a water storage tank 51 is connected to the first floor.

  In the present embodiment, the water storage tank 51 is a storage tank for storing fluid. The staircase room 30 is an area including a stairway and a landing for going back and forth between each floor of a building composed of at least two or more floors.

  FIG. 5A is a cross-sectional view of the first floor of the reactor building, the first floor of the reactor building, and the second floor of the reactor building of the present embodiment, and FIG. 5B is a plan view of the first floor of the reactor building of the present embodiment. . The cross section of the dotted line in FIG. 5B corresponds to FIG. 5A. Since the plan view of the first floor of the reactor building and the plan view of the second floor of the reactor building are the same as those in the first embodiment, the description thereof is omitted.

  The fluid that has flowed in from the large material entrance 11 due to the tsunami first flows into the management area 10 on the first floor.

  Here, if it is assumed that the piping 41 connected to the water storage tank 51 is not connected to the first floor of the reactor building, the fluid flows into the staircase 30 when the staircase door 31 on the first floor is damaged. Then, when the fluid flowing into the staircase 30 reaches the second basement floor of the staircase 30 and the staircase door 33 on the second basement floor is damaged, the fluid flows into the management area 20 on the second basement floor. Further, when the RCIC pump chamber door 22 on the second basement floor is damaged, the fluid flows into the RCIC pump chamber 21.

  However, in the present embodiment, since the pipe 41 connected to the water storage tank 51 is connected to the first floor, the fluid that flows in is stored in the water storage tank 51 through the pipe 41.

  At the boundary between the piping 41 connected to the water storage tank 51 and the first floor of the reactor building, a fluid such as the net plate 42 that can pass the fluid as described in the first embodiment but cannot pass by humans or the like is installed. Since the description regarding this is the same as that of the first embodiment, a description thereof will be omitted.

  In the reactor building of the present embodiment, the fluid flowing in from the large material inlet 11 is stored in the water tank 51 through the pipe 41. As a result, the fluid can be prevented from flowing into the RCIC pump chamber 21 on the second basement floor. In the present embodiment, since the pipe 41 is connected to the first floor, the fluid flowing into the first floor has a high possibility of flowing into the pipe 41 without flowing into the staircase 30. Therefore, it is considered that the possibility that the fluid flows into the RCIC pump chamber 21 is lower than that in the first embodiment.

  In this embodiment, in order to make the explanation easy to understand, an example of the reactor building in which the inundation path is the RCIC pump chamber 21 on the second basement floor from the large entrance 11 on the first floor is shown, but the fluid flows from the upper floor to the lower floor. The reactor building in which the pipe 41 connected to the water storage tank 51 is connected to the floor into which the fluid has flowed in is assumed in this embodiment.

  In this embodiment, the reactor building is described as an example of the building. However, assuming that the fluid flows from the upper floor to the lower floor, the pipe 41 connected to the water storage tank 51 is connected to the floor into which the fluid flows. Buildings of other connected nuclear facilities are also included in this embodiment.

  The building structure of the nuclear facility of Example 4 will be described with reference to FIGS. 6A and 6B. In the present embodiment, a reservoir that stores the fluid that has flowed in from the large carry-in port, a water tank and a large product so that the fluid that has flowed from the large carry-in port does not flow into the RCIC pump room installed on the lower floor when the tsunami strikes. An example of a nuclear reactor building provided with a plurality of pipes connecting the same entrance and the same floor will be described. In this embodiment, in order to make the explanation easy to understand, the large-size entrance 11 is arranged on the first floor, the RCIC pump chamber 21 is arranged on the second basement floor, and the first floor is between the first floor and the second basement floor. A reactor building is assumed in which a staircase 30 serving as an inundation path between the first floor and the second floor is arranged, and a plurality of pipes 41 of at least two systems connected to a water storage tank 51 are connected to the first floor.

  In the present embodiment, the water storage tank 51 is a storage tank for storing fluid. The staircase room 30 is an area including a stairway and a landing for going back and forth between each floor of a building composed of at least two or more floors.

  6A is a cross-sectional view of the first floor of the reactor building, the first floor of the reactor building, and the second floor of the reactor building according to the present embodiment, and FIG. 6B is a plan view of the first floor of the reactor building according to the present embodiment. . 6B corresponds to FIG. 6A. Since the plan view of the first floor of the reactor building and the plan view of the second floor of the reactor building are the same as those in the first embodiment, the description thereof is omitted.

  The fluid that has flowed in from the large material entrance 11 due to the tsunami first flows into the management area 10 on the first floor.

  Here, if it is assumed that the piping 41 connected to the water storage tank 51 is not connected to the first floor of the reactor building, the fluid flows into the staircase 30 when the staircase door 31 on the first floor is damaged. Then, when the fluid flowing into the staircase 30 reaches the second basement floor of the staircase 30 and the staircase door 33 on the second basement floor is damaged, the fluid flows into the management area 20 on the second basement floor. Further, when the RCIC pump chamber door 22 on the second basement floor is damaged, the fluid flows into the RCIC pump chamber 21.

  However, in the present embodiment, since a plurality of pipes 41 connected to the water storage tank 51 are connected to the first floor, the inflowing fluid is stored in the water storage tank 51 through the plurality of pipes 41.

  At the boundary between the plurality of pipes 41 connected to the water storage tank 51 and the first floor of the reactor building, a fluid such as the net plate 42 that can pass the fluid as described in the first embodiment but cannot pass by humans is installed. . Since the description regarding this is the same as that of the first embodiment, a description thereof will be omitted.

  In the reactor building of the present embodiment, the fluid flowing in from the large material inlet 11 is stored in the water tank 51 through the pipe 41. As a result, the fluid can be prevented from flowing into the RCIC pump chamber 21 on the second basement floor. In this embodiment, unlike the third embodiment, since a plurality of pipes 41 of at least two systems connected to the water storage tank 51 are connected to the first floor, the fluid is supplied to the RCIC pump chamber 21 more than the third embodiment. The possibility of inflow is considered to be low.

  In this embodiment, in order to make the explanation easy to understand, an example of the reactor building in which the inundation path is the RCIC pump chamber 21 on the second basement floor from the large entrance 11 on the first floor is shown, but the fluid flows from the upper floor to the lower floor. A reactor building in which a plurality of pipes 41 connected to the water storage tank 51 are connected to the floor into which the fluid has flowed is assumed to be included in the floor.

  Further, in this embodiment, the reactor building is described as an example of the building. However, assuming that the fluid flows from the upper floor to the lower floor, a plurality of pipes connected to the water storage tank 51 on the floor into which the fluid flows. Buildings of other nuclear facilities to which 41 is connected are also included in this embodiment.

  The building structure of the nuclear facility of Example 5 will be described with reference to FIGS. 7A and 7B. In the present embodiment, a reservoir that stores the fluid that has flowed in from the large carry-in port, a water tank, and a staircase so that the fluid that has flowed from the large carry-in port does not flow into the RCIC pump room installed on the lower floor when the tsunami strikes. An example of a reactor building provided with a pipe connecting the chamber and a pipe connecting the water storage tank and the same floor as the large-size carry-in entrance will be described. In this embodiment, in order to make the explanation easy to understand, the large-size entrance 11 is arranged on the first floor, the RCIC pump chamber 21 is arranged on the second basement floor, and the first floor is between the first floor and the second basement floor. A reactor building is assumed in which a staircase 30 serving as an inundation path between the first floor and the second floor is arranged, and a pipe 41 connected to the water storage tank 51 is connected to the first floor and the staircase 30. Here, a plurality of pipes 41 may be provided. Further, in the staircase 30, an openable door 34 is installed as necessary in order to prevent the fluid from flowing into the lower floor than the position where the pipe 41 is connected.

  In the present embodiment, the water storage tank 51 is a storage tank for storing fluid. The staircase room 30 is an area including a stairway and a landing for going back and forth between each floor of a building composed of at least two or more floors.

  FIG. 7A is a cross-sectional view of the first floor of the reactor building, the first floor of the reactor building, and the second floor of the reactor building according to the present embodiment, and FIG. 7B is a plan view of the first floor of the reactor building according to the present embodiment. . 7B corresponds to FIG. 7A. The plan view of the first floor of the reactor building of this example is the same as that of Example 3 or Example 4. About the plan view of the first floor of the reactor building and the plan view of the second floor of the reactor building The same as in the first embodiment. However, in the explanation of the present embodiment, in order to make the explanation easy to understand, two pipes connecting the water tank and the staircase and two pipes connecting the water tank and the first floor of the reactor building are provided. An example of a reactor building is used.

  The fluid that has flowed in from the large material entrance 11 due to the tsunami first flows into the management area 10 on the first floor.

  Here, if it is assumed that the piping 41 connected to the water storage tank 51 is not connected to the first floor of the reactor building, the fluid flows into the staircase 30 when the staircase door 31 on the first floor is damaged. When it is assumed that the pipe 41 connected to the water storage tank 51 is not connected to the staircase 30, the fluid flowing into the staircase 30 reaches the second basement floor of the staircase 30, and the staircase door 33 on the second basement floor When damage or the like occurs, the fluid flows into the management area 20 on the second floor underground. Further, when the RCIC pump chamber door 22 on the second basement floor is damaged, the fluid flows into the RCIC pump chamber 21.

  However, in this embodiment, since the two pipes 41 connected to the water storage tank 51 are connected to the first floor, the inflowing fluid is stored in the water storage tank 51 through the two pipes 41. Even if the fluid flows into the staircase 30 due to damage to the staircase door 31 on the first floor, etc., since the two pipes 41 connected to the water storage tank 51 are connected in the middle of the staircase 30, the fluid that flows in Water is stored in the water storage tank 51 through the two pipes 41 connected to the chamber 30. In addition, the staircase 30 requires an openable door 34 that closes when fluid inflow to the reactor building is detected in order to prevent fluid from flowing into the lower floor than the position where the pipe 41 is connected. Install accordingly. About the example of the installation position of the door 34, since it is the same as that of Example 1, description is abbreviate | omitted.

  The fluid as described in the first embodiment is provided at the boundary between the two pipes 41 connected to the water storage tank 51 and the first floor of the reactor building and the boundary between the two pipes 41 connected to the water storage tank 51 and the staircase 30. Is installed such as a net 42 that can pass through but cannot pass by humans. Since the description regarding this is the same as that of the first embodiment, a description thereof will be omitted.

  In the reactor building of the present embodiment, the fluid flowing in from the large material inlet 11 is stored in the water tank 51 through the pipe 41. As a result, the fluid can be prevented from flowing into the RCIC pump chamber 21 on the second basement floor. Further, in the reactor building of the present embodiment, the pipe 41 is connected to the staircase 30 in addition to connecting to the first floor. Therefore, even if the staircase door 31 on the first floor is damaged and flows into the staircase 30, the water is stored in the water storage tank 51 through the pipe 41 connected to the staircase 30. From this, it is considered that the possibility that the fluid flows into the RCIC pump chamber 21 is lower than that in the first to fourth embodiments.

  In this embodiment, in order to make the explanation easy to understand, an example of the reactor building in which the inundation path is the RCIC pump chamber 21 on the second basement floor from the large entrance 11 on the first floor is shown, but the fluid flows from the upper floor to the lower floor. The reactor building in which the pipe 41 connected to the water storage tank 51 is connected to the floor into which the fluid flows and the staircase 30 is assumed to flow into the floor.

  In this embodiment, the reactor building is described as an example of the building. However, assuming that the fluid flows from the upper floor to the lower floor, the floor into which the fluid flows and the inundation from the upper floor to the lower floor are described. A building of another nuclear facility in which a pipe 41 connected to the water storage tank 51 is connected in the middle of the route is also included in this embodiment.

  The building structure of the nuclear facility of Example 6 will be described with reference to FIGS. 8A and 8B. In this embodiment, an openable water tank door is installed in the water tank provided in the reactor building described in any of the first to fifth embodiments, and the function of releasing the fluid stored in the water tank is provided. An example of a given reactor building will be described. In addition, although the water tank door of a present Example is provided with the function to open and close by manual control, it does not have the function to open and close by automatic control. In addition, since the path through which the fluid flows into the water storage tank due to the tsunami strike overlaps with the description from the first embodiment to the fifth embodiment, the description is omitted in this embodiment.

  FIG. 8A is a schematic diagram when the water level is high, and FIG. 8B is a schematic diagram when the water level is low. In the water tank 51 of the reactor building of this embodiment, an openable water tank door 52 that is opened and closed by manual control is installed. In addition, since this water tank door 52 is normally closed, even if a water level rises by the tsunami attack, fluid does not flow into the water tank 51 from the water tank door 52. Moreover, in order to grasp the water level at the time of the tsunami attack, a sensor 53 for grasping the water level is installed as necessary. Here, the reactor building of FIGS. 8A and 8B is a reactor building in which an openable water tank door 52 is installed in the water tank 51 of FIG. 1A as an example for easy understanding.

  When the fluid is stored in the water storage tank 51, in the reactor building of this embodiment, when the water level is lowered due to a tsunami or the like, the water storage door 51 is opened to release the fluid stored in the water storage tank 51. As a result, the amount of fluid stored in the water storage tank 51 decreases, and even if a tsunami strikes again, a large amount of fluid can be stored in the water storage tank 51. In addition, opening and closing of the water tank door 52 is performed by manual control by visual observation or use of the sensor 53.

  By installing the water tank door 52 in the water tank 51 as in the present embodiment, even when the tsunami comes back, more fluid can be stored than when the water tank door 52 is not installed. . In addition, it is thought that providing the function which discharge | releases a fluid by installation of the water tank door 52 leads also to the miniaturization of the water tank 51. The function of discharging the fluid in this way does not require pumping up the fluid stored in the water storage tank 51 when discharging the fluid stored in the water storage tank 51, and can efficiently discharge the fluid.

  Although the present embodiment has been described using a reactor building as an example of a building, a building of another nuclear facility provided with a water tank 51 in which a water tank door 52 is installed is also included in this embodiment.

  The building structure of the nuclear facility of Example 7 will be described with reference to FIGS. 8A and 8B. In this embodiment, an openable water tank door is installed in the water tank provided in the reactor building described in any of the first to fifth embodiments, and the function of releasing the fluid stored in the water tank is provided. An example of a given reactor building will be described. In addition, the water tank door of the present embodiment has a function of opening and closing by automatic control in addition to a function of opening and closing by manual control. In addition, since the path through which the fluid flows into the water storage tank due to the tsunami strike overlaps with the description from the first embodiment to the fifth embodiment, the description is omitted in this embodiment.

  Moreover, since the schematic diagram when the water level is high (FIG. 8A), the schematic diagram when the water level is low (FIG. 8B), the water tank door 52, and the sensor 53 are the same as those in the sixth embodiment, a detailed description will be given. Omitted. However, the opening and closing of the water tank door 52 of this embodiment has a function of opening and closing by automatic control in addition to a function of opening and closing by manual control. The function of opening and closing by automatic control is, for example, a function of opening a door based on a signal of the water level sensor when the water level sensor 53 determines that the water level has decreased.

  When the fluid is stored in the water storage tank 51, in the reactor building of this embodiment, when the water level is lowered due to a tsunami or the like, the water storage door 51 is opened to release the fluid stored in the water storage tank 51. As a result, the amount of fluid stored in the water storage tank 51 decreases, and even if a tsunami strikes again, a large amount of fluid can be stored in the water storage tank 51. The water tank door 52 is opened and closed by visual inspection, manual control using the sensor 53, or automatic control using the sensor 53 or the like.

  By installing the water tank door 52 in the water tank 51 as in the present embodiment, even when the tsunami comes back, more fluid can be stored than when the water tank door 52 is not installed. . In addition, it is thought that providing the function which discharge | releases a fluid by installation of the water tank door 52 leads also to the miniaturization of the water tank 51. The function of discharging the fluid in this way does not require pumping up the fluid stored in the water storage tank 51 when discharging the fluid stored in the water storage tank 51, and can efficiently discharge the fluid.

  Although the present embodiment has been described using a reactor building as an example of a building, a building of another nuclear facility provided with a water tank 51 in which a water tank door 52 is installed is also included in this embodiment.

  The building structure of the nuclear facility of Example 8 will be described with reference to FIGS. 8A and 8B. In this embodiment, an openable water tank door is installed in the water tank provided in the reactor building described in any of the first to fifth embodiments, and the function of releasing the fluid stored in the water tank is provided. An example of a given reactor building will be described. In addition, the water tank door of the present embodiment has a function of opening and closing using water pressure. In addition, since the path through which the fluid flows into the water storage tank due to the tsunami strike overlaps with the description from the first embodiment to the fifth embodiment, the description is omitted in this embodiment.

  Moreover, since the schematic diagram when the water level is high (FIG. 8A), the schematic diagram when the water level is low (FIG. 8B), the water tank door 52, and the sensor 53 are the same as those in the sixth embodiment, a detailed description will be given. Omitted. However, the water tank door 52 of the present embodiment has a structure that opens from the inside of the water tank 51 to the outside of the water tank 51, and the water tank door 52 has a function of opening and closing using water pressure. ing. The function of opening and closing using the water pressure is, for example, a function of opening the water tank door 52 by the water pressure inside the water tank when the water is stored inside the water tank and there is no fluid outside the water tank. .

  When the fluid is stored in the water storage tank 51, in the reactor building of the present embodiment, when the water level is lowered due to a tsunami or the like, the water stored in the water storage tank 51 is opened by the difference in water pressure. Is released. As a result, the amount of fluid stored in the water storage tank 51 decreases, and even if a tsunami strikes again, a large amount of fluid can be stored in the water storage tank 51.

  By installing the water tank door 52 in the water tank 51 as in the present embodiment, even when the tsunami comes back, more fluid can be stored than when the water tank door 52 is not installed. . In addition, it is thought that providing the function which discharge | releases a fluid by installation of the water tank door 52 leads also to the miniaturization of the water tank 51. The function of discharging the fluid in this way does not require pumping up the fluid stored in the water storage tank 51 when discharging the fluid stored in the water storage tank 51, and can efficiently discharge the fluid. Further, by using the water pressure as in the present embodiment, the water tank door 52 can be opened and closed with a smaller electric power than in the sixth and seventh embodiments, and the water tank can be used by using the water pressure even during a power failure. The release of fluid from 51 is possible.

  Although the present embodiment has been described using a reactor building as an example of a building, a building of another nuclear facility provided with a water tank 51 in which a water tank door 52 is installed is also included in this embodiment.

  The building structure of the nuclear facility of Example 9 will be described with reference to FIG. In the present embodiment, a pipe connecting the water storage tank and the reactor containment vessel is installed in the water tank provided in the reactor building described in any of the first to eighth embodiments, and water is stored in the water storage tank. An example of a reactor building having a function of using the fluid for cooling the reactor will be described. In addition, about the path | route into which a fluid flows in into a water storage tank by the tsunami attack, since it overlaps with description from Example 1 to Example 5, description is abbreviate | omitted in a present Example.

  FIG. 9 is an example of the reactor building of the present embodiment. A pipe 43 connected to the reactor containment vessel 0 is connected to the water tank 51, and a water tank door that opens when it is determined that the fluid stored in the water tank 51 is necessary for cooling the reactor. 54 is installed. Here, in order to make the explanation easy to understand, the reactor building in FIG. 9 is an example of a reactor building in which a pipe 43 for connecting the water tank 51 and the reactor containment vessel 0 is installed in the water tank 51 in FIG. 1A. Used. The water tank door 54 is normally closed.

  When the fluid is stored in the water storage tank 51, in the reactor building of the present embodiment, when it is determined that the fluid stored in the water storage tank 51 is necessary for cooling the reactor, the water storage tank door 54 is opened and the water storage tank is opened. The fluid stored in 51 is used for cooling the reactor. In addition, when the position where the pipe 43 is connected to the water storage tank 51 is set higher than the position where the pipe 43 is connected to the reactor containment vessel 0, the fluid can flow into the reactor containment vessel 0 using gravity. . Therefore, in consideration of the situation where electric power cannot be used due to a power failure or the like, it is necessary to install the pipe 43 in an inclined manner so that the fluid in the water storage tank 51 flows to the reactor containment vessel 0 without requiring the power of a pump or the like. desirable.

  In the present embodiment, in addition to the effects of the first to eighth embodiments, a reactor cooling function is provided by using a fluid squeezed by a tsunami. Therefore, even if the functions of other reactor cooling systems are lost, it is considered that the reactor cooling can be performed for a certain period of time by this function.

  In this example, the reactor building of Example 1 was described as an example of the reactor building. However, examples in which the piping 43 is installed in the reactor buildings of Example 2 to Example 8 are also included in this example. .

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  0 ... Reactor containment vessel, 10 ... Control area on the 1st floor, 11 ... Large port, 20 ... Management area on the 2nd basement floor, 21 ... RCIC pump room, 22 ... RCIC pump room door, 30 ... Stair room, 31 ... 1st floor stairs door, 32 ... 1st basement stairs door, 33 ... 2nd basement stairs door, 34 ... Door installed in the staircase, 41 ... Piping, 42 ... Net plate, 43 ... Reservoir and reactor Piping for connecting the containment vessel, 51 ... Reservoir, 52 ... Reservoir door, 53 ... Sensor, 54 ... Reservoir door installed in the piping connecting the reserving tank and the reactor containment vessel, 55 ... Fluid (seawater), 56 ... Sea level, 341 ... A door installed at a high position among doors installed in a staircase, 342 ... A door installed at a low position among doors installed in a staircase.

Claims (13)

A storage tank for storing fluid flowing into the building;
A pipe provided between the building and the storage tank and serving as a flow path for the fluid;
When the fluid flows into the building, the building is stored in the storage tank through the pipe. The building according to claim 1,
The building is a reactor building in which a nuclear reactor is installed in the building. The building according to claim 1 or 2,
The building is composed of at least two or more floors, and includes a staircase that goes back and forth between the floors of the plurality of floors
When the fluid flows into the building, the building is stored in the storage tank via the staircase and the pipe. The building according to claim 3,
The building is characterized in that the pipe is connected to the staircase. The building according to any one of claims 1 to 4,
The building is characterized in that at least two systems of the piping are provided between the building and the storage tank. The building according to claim 1 or 2,
The building is characterized in that the pipe is directly connected to a floor of the building into which a fluid flows. The building according to claim 6,
The building is characterized in that at least two systems of the piping are provided. The building according to claim 3,
The pipe is connected to the staircase;
A system directly connected to the floor of the building through which fluid flows without going through the staircase;
The building characterized by having. The building according to claim 8,
The building connected to the staircase and the piping of the system directly connected to the floor of the building through which the fluid flows without passing through the staircase are provided at least two systems each. The building according to any one of claims 1 to 9,
The said storage tank is equipped with the discharge door which discharge | releases the fluid stored in the said storage tank, The building characterized by the above-mentioned. The building according to claim 10,
The building includes a sensor that detects the height of the fluid surface in the vicinity of the storage tank,
When the height of the fluid surface detected by the sensor is lower than a predetermined height, the fluid stored in the storage tank is discharged by opening the discharge door. The building according to claim 10,
When the height of the fluid surface near the storage tank is lower than the position of the storage tank, the fluid stored in the storage tank is released by opening the discharge door by the pressure of the fluid inside the storage tank. A building characterized by doing. The building according to claim 2,
A pipe provided between the storage tank and the nuclear reactor, and serving as a flow path for fluid stored in the storage tank;
A storage tank door is further provided in the pipe provided between the storage tank and the nuclear reactor,
When cooling of the core of the nuclear reactor becomes necessary, the fluid in the storage tank is supplied to the nuclear reactor by opening the storage tank door.

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