JP5659107B2 - Spent fuel pool facility and nuclear power plant - Google Patents

Description

  Embodiments of the present invention relate to a spent fuel pool facility for storing spent fuel burned in a nuclear reactor and a nuclear power plant equipped with the spent fuel pool facility.

  At a nuclear power plant, a spent fuel pool is provided in which fuel assemblies burned in a nuclear reactor are stored in a spent fuel rack and stored while being cooled with a large amount of water.

  As such a spent fuel pool, there is a technique described in Patent Document 1, for example. The spent fuel pool includes a plurality of vertical plates that divide the upper space of the fuel storage pool into a grid, a plurality of horizontal plates that are provided below the vertical plates and that can be rotated in the vertical direction, and some vertical plates. And an openable / closable door provided at a side end of the plate.

  The technique described in Patent Document 1 is configured in this way, so that the efficiency of fuel exchange work is not impaired, and sloshing (swing of the liquid level) of the fuel storage pool water is suppressed even in the event of a large-scale earthquake. Prevents overflow of water.

JP 2009-115649 A

  By the way, in the above-mentioned conventional spent fuel pool, when the fuel with impurities such as salinity attached is stored in the same spent fuel pool where the spent fuel in a healthy state is stored, the salinity etc. Impurities will be brought in. As a result, the spent fuel in a healthy state may be contaminated with impurities such as salt and damaged due to corrosion.

  An object of the embodiments of the present invention is to provide a spent fuel pool facility and a nuclear power plant capable of preventing intrusion of impurities such as salinity into a healthy fuel storage area.

  In order to achieve the above object, a spent fuel pool facility according to an embodiment of the present invention is provided in a reactor building of a nuclear power plant, and a plurality of areas are used in a spent fuel pool for storing spent fuel. A partition wall that is partitioned into two, and is attached to both side surfaces of the partition wall so as to face the vicinity of two inner wall surfaces of the spent fuel pool in the installed state of the partition wall, and between the both side surfaces of the partition wall and the two inner wall surfaces And a sealing member that seals the gaps.

  A nuclear power plant according to an embodiment of the present invention, a nuclear reactor building, a nuclear reactor pressure vessel that is arranged in the nuclear reactor building and houses a core loaded with a large number of fuels, and is arranged in the nuclear reactor building, A spent fuel pool that stores spent fuel; a partition that divides the spent fuel pool into a plurality of regions; and the partition that faces the vicinity of two inner wall surfaces of the spent fuel pool in the installed state of the partition And a sealing member for sealing between the both side surfaces of the partition wall and the two inner wall surfaces.

  According to the embodiment of the present invention, it is possible to prevent impurities such as salinity from entering a healthy fuel storage region.

1 is an elevational sectional view showing a nuclear power plant to which a first embodiment of a spent fuel pool facility according to the present invention is applied. FIG. 2 is a vertical sectional view showing the spent fuel pool facility in FIG. 1. It is a top view which shows the spent fuel pool installation of FIG. It is an expansion perspective view which shows a part of partition wall of FIG. It is a front view which shows a part of partition wall of FIG. It is an expansion perspective view which shows a part of partition wall of FIG. It is an elevation sectional view showing the partition in the 2nd embodiment of the spent fuel pool equipment concerning the present invention. It is an elevation sectional view showing the partition in a 3rd embodiment of the spent fuel pool equipment concerning the present invention. It is an enlarged plan view which shows the 1st modification of the sealing member of FIG. It is an enlarged plan view which shows the 2nd modification of the sealing member of FIG. It is an enlarged plan view which shows the 3rd modification of the sealing member of FIG. It is an elevational view showing a first modification of the partition wall of FIG. It is a vertical cross-section block diagram of FIG. It is a vertical cross-section block diagram which shows the state which the rubber sheet of FIG. 13 received the impact pressure. It is an elevational view showing a second modification of the partition wall of FIG. FIG. 16 is a vertical sectional configuration diagram of FIG. 15. FIG. 17 is a vertical cross-sectional configuration diagram illustrating a state where the rubber plug of FIG. 16 is subjected to impact pressure. It is an elevational view showing a third modification of the partition wall of FIG. FIG. 19 is a vertical sectional configuration diagram of FIG. 18. FIG. 19 is an elevational cross-sectional configuration diagram illustrating a state in which the open / close door of FIG. 18 receives impact pressure.

  Embodiments of spent fuel pool equipment according to the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is an elevational sectional view showing a nuclear power plant to which a first embodiment of a spent fuel pool facility according to the present invention is applied. FIG. 2 is an elevational sectional view showing the spent fuel pool facility of FIG. FIG. 3 is a plan view showing the spent fuel pool facility of FIG.

  As shown in FIG. 1, a reactor core 2 is installed in a reactor pressure vessel 1 in a reactor building 3 of a nuclear power plant. FIG. 1 shows a state in which the upper lid, the steam dryer, and the steam / water separator are removed from the reactor pressure vessel 1.

  In the reactor building 3, a reactor well pool 4 is constructed above the reactor pressure vessel 1, and an equipment installation pool 5 and a spent fuel pool 6 are constructed on both sides of the reactor well pool 4. Yes. An operation floor 7 is installed around the reactor well pool 4, the equipment installation pool 5 and the spent fuel pool 6.

  A large number of spent fuel racks 8 for temporarily storing spent fuel loaded in the core 2 in the reactor pressure vessel 1 are installed in the spent fuel pool 6 at regular intervals.

  In addition, a partition wall 10 made entirely of stainless steel is installed in the spent fuel pool 6. The partition wall 10 partitions the spent fuel pool 6 in two areas in a watertight manner. In the spent fuel pool 6 thus partitioned, for example, spent fuel in a healthy state is stored in the spent fuel rack 8 in one region, and impurities such as salt are stored in the spent fuel rack 8 in the other region. Store spent fuel in the attached state.

  The partition wall 10 is provided with sealing members 11 such as O-rings on both side surfaces facing the vicinity of the two inner wall surfaces 6a of the spent fuel pool 6 in the installed state. The seal member 11 seals between the both side surfaces of the partition wall 10 and the two inner wall surfaces 6 a of the spent fuel pool 6. Thereby, the watertightness between the partition wall 10 and the two inner wall surfaces 6a is maintained.

  The bottom surface of the partition wall 10 is fixed by using existing foundation bolts for fixing the spent fuel rack 8 provided on the bottom surface of the spent fuel pool 6. A seat packing 12 is interposed between the bottom surface of the spent fuel pool 6 and the bottom surface of the partition wall 10 as shown in FIG. Thereby, the watertightness between the bottom surface of the partition wall 10 and the bottom surface of the spent fuel pool 6 is maintained.

  Next, the structure of the partition 10 will be specifically described.

  FIG. 4 is an enlarged perspective view showing a part of the partition wall of FIG. FIG. 5 is a front view showing a part of the partition wall of FIG. FIG. 6 is an enlarged perspective view showing a part of the partition wall of FIG.

  The partition 10 is formed of a plurality of unit partitions 10A. Specifically, as shown in FIGS. 2 to 6, the partition wall 10 is formed as a single flat plate with three unit partitions 10 </ b> A connected in the vertical direction and two unit partition walls 10 </ b> A in the horizontal direction.

  As shown in FIGS. 4 and 6, each unit partition wall 10 </ b> A is integrally formed with a flange 10 </ b> B in the vertical direction and the horizontal direction. The partition wall 10 is overlapped with the flanges 10B in the vertical direction and the horizontal direction, and is fixed by fixing members such as bolts and nuts (not shown). Here, a seal member such as an O-ring is provided between the joint surfaces of the flanges 10B. With this sealing member, a sealing property is secured between the plurality of unit partition walls 10A of the partition wall 10.

  In the present embodiment, as shown in FIG. 5, when a plurality of unit partitions 10A are vertically stacked, the fixing positions of the fixing members 13 such as bolts and nuts with respect to the flange 10B are shifted in the horizontal (horizontal) direction. Thus, it is possible to confirm the looseness of the fixing members 13 such as bolts and nuts and perform tightening and the like from the operation floor 7 during maintenance after the partition wall 10 is installed.

  Moreover, although this embodiment demonstrated the example which connected the two unit partition walls 10A to 3 steps | paragraphs in the up-down direction and the horizontal direction, the number of the upper-lower stage and the number connected in the horizontal direction are not limited. These numbers are set based on the ease of transporting the unit partition 10A, the assembly of the entire partition 10 and the like.

  Thus, in this embodiment, the spent fuel pool 6 is divided into two regions by the partition wall 10. In this embodiment, the spent fuel in a healthy state is stored in the spent fuel rack 8 installed in one area, and impurities such as salt adhere to the spent fuel rack 8 installed in the other area. By storing the spent fuel in such a state, it is possible to prevent impurities such as salt from entering a healthy fuel storage region.

  In addition, according to the present embodiment, since the partition wall 10 is formed of the plurality of unit partition walls 10A, it can be reduced in size and weight, so that it can be easily carried from the opening of the reactor building 3 and The unit partition wall 10A can be easily transported using the overhead crane.

  Further, according to the present embodiment, the partition wall 10 is fixed using the existing foundation bolts for fixing the spent fuel rack 8 provided on the bottom surface of the spent fuel pool 6. Thereby, since the installation position of the partition wall 10 can be easily changed, the area distribution between the area for storing the spent fuel in a healthy state and the area for storing the spent fuel in an unhealthy state with impurities attached Can be changed step by step for each mounting pitch of the spent fuel rack 8.

(Second Embodiment)
FIG. 7 is an elevational sectional view showing a partition wall in a second embodiment of the spent fuel pool facility according to the present invention.

  In the following embodiments and modifications, the same or corresponding parts as those in the first embodiment will be described with the same reference numerals.

  As shown in FIG. 7, in the present embodiment, a beam 15 is bridged between the opening edges facing each other on the operation floor 7, and both ends of the beam 15 are fixed to the operation floor 7 by fixing members 16 such as implantation bolts and nuts. Yes.

  Further, the upper end of the partition wall 10 is fixed at the center in the longitudinal direction of the beam 15 by a fixing member 17 such as a bolt and a nut.

  As described above, according to the present embodiment, both ends of the beam 15 are fixed to the operation floor 7, and the upper part of the partition wall 10 is fixed to the beam 15, so that the upper part of the partition wall 10 is fixed by the beam 15, Compared with the first embodiment, the installation strength of the partition wall 10 can be significantly increased.

  Further, since the upper part of the partition wall 10 is fixed by the beam 15, the number of foundation bolts for fixing the bottom surface of the partition wall 10 can be reduced in order to maintain the same installation strength as in the first embodiment. . That is, even in the case of a large-scale earthquake, sloshing (pooling of the liquid level) of pool water in the spent fuel pool 6 can be suppressed with a small number of foundation bolts.

(Third embodiment)
FIG. 8 is an elevational sectional view showing a partition wall in a third embodiment of the spent fuel pool facility according to the present invention.

  As shown in FIG. 8, in this embodiment, wire support fittings 18 a and 18 b are respectively installed at opening edges facing each other via the spent fuel pool 6 on the operation floor 7. As for the partition 10, the wire support metal fitting 18c is installed in the upper end. These wire support fittings 18a, 18b, and 18c are fixed to the opening edge of the operation floor 7 and the upper end of the partition wall 10 by fixing members such as bolts and nuts, respectively.

  A wire 19 a is stretched between one wire support fitting 18 a of the operation floor 7 and the wire support fitting 18 c of the partition wall 10. Similarly, a wire 19 b is stretched between the other wire support fitting 18 b of the operation floor 7 and the wire support fitting 18 c of the partition wall 10. These wires 19a and 19b fix the upper part of the partition wall 10 by pulling both sides of the wire support fitting 18c.

  As described above, according to the present embodiment, the operation floor 7 and the partition wall 10 are provided with the wire support fittings 18a, 18b, and 18c, respectively, and the wire support fittings 18a, 18b, and 18c are respectively provided with the wires 19a and 19b. The upper part of the partition 10 is fixed to the operation floor 7 by these wires 19a and 19b. Thereby, similarly to the said 2nd Embodiment, compared with the said 1st Embodiment, the installation intensity | strength of the partition 10 can be raised significantly.

  Further, by fixing the upper portion of the partition wall 10 with the wires 19a and 19b, the number of foundation bolts for fixing the bottom surface of the partition wall 10 can be reduced when the same installation strength as in the first embodiment is maintained. it can. That is, sloshing of the pool water of the spent fuel pool 6 can be suppressed with a small number of foundation bolts even during a large-scale earthquake.

(First modification of seal member)
FIG. 9 is an enlarged plan view showing a first modification of the seal member of FIG.

  In the first embodiment, an example in which an O-ring or the like is used as the seal member 11 has been described. However, in the first modified example, as shown in FIG.

  On the side surface of the partition wall 10, that is, the side surface facing the vicinity of the inner wall surface 6 a of the spent fuel pool 6, mounting grooves 21 are formed in the vertical direction of the partition wall 10. The pressurization type expansion and contraction packing 20 is attached to the attachment groove 21.

  The pressurization type expansion and contraction packing 20 is inflated by introducing a fluid such as air into the inside, and pressurizes and seals against the inner wall surface 6 a of the spent fuel pool 6.

  As described above, according to the first modified example, by using the pressure-type expansion and contraction type packing 20 as the seal member, the gap generated between the inner wall surface 6a of the spent fuel pool 6 and the side surface of the partition wall 10 is adjusted. The high sealing performance of the partition wall 10 can be ensured.

(Second modification of seal member)
FIG. 10 is an enlarged plan view showing a second modification of the seal member of FIG.

  As shown in FIG. 10, a pressure type expansion / contraction type packing 20 is attached to the attachment groove 21 of the partition wall 10 via a packing guide 22. A back pressure chamber 23 is formed on the back surface of the packing guide 22. Air is supplied to the back pressure chamber 23 from an air supply source (not shown). When air is supplied to the back pressure chamber 23, the pressurization type expandable packing 20 is moved with respect to the inner wall surface 6 a of the spent fuel pool 6 via the packing guide 22. The packing guide 22 and the back pressure chamber 23 that moves the packing guide 22 toward the inner wall surface 6 a constitute a gap adjusting mechanism that adjusts a gap generated between the inner wall surface 6 a of the spent fuel pool 6 and the side surface of the partition wall 10. To do.

  The packing guide 22 is always in contact with the O-ring 24 on both sides. The O-ring 24 is attached to the opening of the attachment groove 21 of the partition wall 10 so as to face each other. Since the packing guide 22 is in contact with the O-ring 24, it is possible to prevent air leakage from the back pressure chamber 23 between the mounting groove 21 and the packing guide 22.

  As described above, according to the second modification, in addition to the pressure type expansion and contraction packing 20 as a seal member, the packing guide 22 is moved to the inner wall surface 6a to press the pressure type expansion and contraction packing 20 against the inner wall surface 6a. By providing the back pressure chamber 23, the adjustment range of the gap generated between the inner wall surface 6a of the spent fuel pool 6 and the side surface of the partition wall 10 can be expanded. As a result, a much higher sealing performance can be ensured.

  In the second modification, the pressurization type expansion and contraction packing 20 is used as the seal member. However, since the adjustment range of the gap can be expanded in the second modification, a simple O-ring is used. Also good. The same applies to a third modification described later.

(Third Modification of Seal Member)
FIG. 11 is an enlarged plan view showing a third modification of the seal member of FIG. In the third modification, the description of the same configuration as that of the second modification shown in FIG. 10 is omitted, and a different configuration will be described.

  In the second modified example, the back pressure chamber 23 is provided in order to move the packing guide 22 to the inner wall surface 6a and press the pressurization type expansion and contracting packing 20 against the inner wall surface 6a. However, in the third modified example, FIG. As shown in FIG. 11, the packing guide 22 is moved to the inner wall surface 6a by the urging force (elastic force) of the pressing spring 25 so that the pressurization type expandable packing 20 is pressed against the inner wall surface 6a.

  In the third modification, a gap adjusting mechanism is configured by the packing guide 22 and the pressing spring 25 that moves the packing guide 22 toward the inner wall surface 6a.

  In the third modification, a coil spring is used as the pressing spring 25, but the present invention is not limited to this, and a leaf spring may be used.

  As described above, according to the third modified example, in addition to the pressure type expansion and contraction type packing 20 as a seal member, the packing guide 22 is moved to the inner wall surface 6a to press the pressure type expansion and contraction type packing 20 against the inner wall surface 6a. By providing the pressure spring 25, the adjustment range of the gap formed between the inner wall surface 6a of the spent fuel pool 6 and the side surface of the partition wall 10 can be expanded as in the second modification. As a result, a much higher sealing performance can be ensured.

(First modification of partition wall)
FIG. 12 is an elevation view showing a first modification of the partition wall of FIG. FIG. 13 is a vertical sectional view of FIG. FIG. 14 is a vertical sectional view showing a state in which the rubber sheet of FIG. 13 is subjected to impact pressure.

  As shown in FIGS. 12 to 14, the partition wall 30 according to the first modification has a plurality of (in the present embodiment, five) rectangular openings 31 arranged in parallel in the horizontal direction. That is, the partition wall 30 is formed with a plurality of rectangular openings 31 arranged side by side so as to penetrate both side surfaces defining the spent fuel pool 6.

  The plurality of openings 31 are each closed by a rubber sheet 32 as an elastic sheet. The opening 31 is closed by adhering the outer peripheral end of the rubber sheet 32 to the opening edge of the opening 31.

  The partition wall 30 has a foundation bolt and a nut attached to a flange 33 formed on the bottom surface. Thereby, the flange 33 is fixed to the bottom surface of the spent fuel pool 6, so that the partition wall 30 is fixed in the spent fuel pool 6.

  In the first modification, an example in which five openings 31 are arranged in parallel has been described, but other numbers may be used. Further, the shape of the opening 31 may be, for example, a circle other than the rectangle.

  Thus, in the partition wall 30 of the first modification, a plurality of openings 31 penetrating both side surfaces defining the spent fuel pool 6 are formed, and these openings 31 are closed by rubber sheets 32, respectively.

  According to the partition wall 30, the impact pressure generated by the sloshing of the pool water of the spent fuel pool 6 during a large-scale earthquake can be reduced by the deflection of the rubber sheet 32 shown in FIG. And the load which acts on the foundation bolt for fixing the partition 30 can be reduced.

(Second modification of partition wall)
FIG. 15 is an elevation view showing a second modification of the partition wall of FIG. FIG. 16 is a vertical sectional view of FIG. FIG. 17 is a vertical sectional view showing a state where the rubber plug of FIG. 16 receives impact pressure.

  As shown in FIGS. 15 to 17, the partition wall 35 of the second modification is formed by arranging a plurality of circular openings 36 so as to penetrate both side surfaces defining the spent fuel pool 6. These openings 36 are each sealed with a rubber plug 37 as a pressure relief mechanism. The rubber plug 37 is set so as to be detached from the opening 36 when the impact pressure generated by the sloshing of the pool water of the spent fuel pool 6 exceeds a certain value.

  In the second modification, a car 38 is attached so as to surround both side surfaces of the partition wall 35 in which the opening 36 is formed. The car 38 is for receiving and collecting the rubber stopper 37 detached from the opening 36 of the partition wall 35. The partition wall 35 has a foundation bolt and a nut attached to a flange 39 formed on the bottom surface.

  Thus, in the partition wall 35 of the second modified example, a plurality of openings 36 penetrating both side surfaces defining the spent fuel pool 6 are formed, and these openings 36 are sealed with rubber plugs 37, respectively. .

  According to the partition wall 35, when the impact pressure generated by the sloshing of the pool water of the spent fuel pool 6 exceeds a certain value in the event of a large-scale earthquake, the rubber plug 37 is detached from the opening 36, so that the impact pressure is reduced. It does not act on the lower part of the partition wall 35. Thereby, the load which acts on the foundation bolt for fixing the partition 35 can be reduced.

(Third modification of partition wall)
FIG. 18 is an elevation view showing a third modification of the partition wall of FIG. FIG. 19 is a vertical sectional view of FIG. FIG. 20 is an elevational cross-sectional view showing a state in which the opening / closing door of FIG. 18 receives impact pressure.

  As shown in FIGS. 18 to 20, the partition wall 40 of the third modified example has four rectangular openings 41 in the upper and lower stages and four in the horizontal direction at regular intervals so as to penetrate both side surfaces defining the spent fuel pool 6. Is formed.

  Opening and closing doors 42 as pressure relief mechanisms are attached to these openings 41 so as to close the openings 41. Each of these open / close doors 42 can be opened and closed in the vertical direction around the hinge portion 43.

  Among the plurality of opening / closing doors 42, the opening / closing door 42 that closes the upper opening 41 is attached to one side surface (right side surface in FIGS. 19 and 20) of the partition wall 40. The open / close door 42 attached to close the lower opening 41 is attached to the other side surface of the partition wall 40 (the left side surface in FIGS. 19 and 20). The plurality of open / close doors 42 is set to open from the opening 41 when the impact pressure generated by the sloshing of the pool water of the spent fuel pool 6 exceeds a certain value.

  The plurality of open / close doors 42 have a sealing member 44 such as packing bonded to the inner surface side in order to maintain water tightness with respect to each side surface of the partition wall 40. Further, the partition wall 40 has a foundation bolt and a nut attached to a flange 45 formed on the bottom surface.

  As described above, in the partition wall 40 of the third modified example, a plurality of openings 41 penetrating both side surfaces defining the spent fuel pool 6 are formed, and the open / close doors 42 are respectively attached so as to close these openings 41. ing.

  According to the partition wall 40, when the impact pressure generated by the sloshing of the pool water in the spent fuel pool 6 exceeds a certain value in the event of a large-scale earthquake, the door is attached to one or the other side surface of the partition wall 40. 42 opens to relieve excessive impact pressure on the partition 40 itself. Thereby, the load which acts on the foundation bolt for fixing the partition 40 can be reduced.

  In addition, in the partition wall 40 of the third modified example, the opening / closing door 42 is attached to one and the other side surfaces of the partition wall 40, but the opening / closing door 42 may be attached only to one side surface.

  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.

  For example, in each of the above-described embodiments, both sides of the partition wall are disposed so as to face each other in the vicinity of the mutually facing inner wall surfaces of the spent fuel pool 6 to form a rectangular region in plan view. Without being limited to the above, one region may be formed in a triangular shape in plan view and the other region may be formed in a quadrangular shape. The spent fuel pool 6 may be divided into a plurality of two or more.

DESCRIPTION OF SYMBOLS 1 ... Reactor pressure vessel, 2 ... Core, 3 ... Reactor building, 4 ... Reactor well pool, 5 ... Equipment installation pool, 6 ... Used fuel pool, 6a ... Inner wall surface, 7 ... Operation floor, 8 ... Use Finished fuel rack, 10 ... partition wall, 11 ... sealing member, 12 ... seat packing, 13 ... fixing member, 15 ... beam, 16 ... fixing member, 17 ... fixing member, 18a, 18b, 18c ... wire support fitting, 19a, 19b DESCRIPTION OF SYMBOLS ... Wire, 20 ... Pressurizing expansion-contraction type packing, 21 ... Mounting groove, 22 ... Packing guide, 23 ... Back pressure chamber, 24 ... O-ring, 25 ... Pressing spring, 30 ... Septum, 31 ... Opening, 32 ... Rubber Sheet (elastic sheet), 33 ... flange, 35 ... partition, 36 ... opening, 37 ... rubber stopper (pressure relief mechanism), 38 ... car, 39 ... flange, 40 ... partition, 41 ... opening, 42 ... open / close door (Pressure Relief mechanism), 43 ... hinge portion 44 ... seal member 45 ... flange

Claims (8)

A partition wall provided in a nuclear reactor building and dividing a spent fuel pool for storing spent fuel into a plurality of regions;
Seals that are attached to both side surfaces of the partition wall so as to face the vicinity of two inner wall surfaces of the spent fuel pool in the installed state of the partition wall, and seal between the both side surfaces of the partition wall and the two inner wall surfaces, respectively. Members,
A spent fuel pool facility comprising:   2. The spent fuel pool facility according to claim 1, wherein the partition walls are assembled such that a plurality of unit partition walls are connected in the vertical direction or the horizontal direction.   The operation floor is installed around the upper part of the spent fuel pool, both ends of the beam are fixed to the operation floor, and the upper part of the partition wall is fixed to the beam. Spent fuel pool facility as described.   An operation floor is installed around the upper part of the spent fuel pool, and wire support fittings are provided at the opposing positions of the operation floor through the spent fuel pool and the partition walls, respectively. The spent fuel pool facility according to claim 1 or 2, wherein wires are stretched and the upper part of the partition wall is fixed to the operation floor by these wires.   The seal member attached to both side surfaces of the partition wall is a pressurization type expansion and contraction type packing that pressurizes the two inner wall surfaces of the spent fuel pool, respectively. The spent fuel pool facility according to one item. 6. The partition wall according to claim 1, wherein an opening that penetrates the surfaces facing each of the plurality of regions is formed, and the opening is closed by an elastic sheet. Spent fuel pool equipment. The said partition is equipped with the pressure relief mechanism which act | operates when the pressure added to one surface of each surface which each opposes these several area | region becomes more than predetermined value, The one of Claim 1 thru | or 5 characterized by the above-mentioned. Spent fuel pool facility as described in The reactor building,
A reactor pressure vessel disposed in the reactor building and containing a core loaded with a number of fuels;
A spent fuel pool disposed in the reactor building and storing spent fuel;
A partition partitioning the spent fuel pool into a plurality of regions;
Seal members that are attached to both side surfaces of the partition wall facing the vicinity of two inner wall surfaces of the spent fuel pool in the installed state of the partition wall and seal between the both side surfaces of the partition wall and the two inner wall surfaces, respectively. When,
A nuclear power plant characterized by comprising:

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