JPS6190092A - Parting device for well pool of nuclear reactor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a partitioning device for a nuclear reactor well pool, and a device for partitioning between a reactor well pool and a spent fuel storage pool in a nuclear power plant. This invention relates to a partitioning device for a nuclear reactor pool, which can independently and independently watertightly close the space between the reactor and the temporary equipment storage pool, and each pool can be filled with water independently.

[Technical background of the invention and its problems]

Conventionally, during the construction of a nuclear power plant, a partitioning device for a reactor well pool for carrying out a water filling leakage test for each pool has been drawn as shown in FIGS. 4 to 7. In other words, a spent fuel storage pool P2 and a (large temporary storage pool P3) are arranged on both sides of the reactor well pool P1 in the reactor building of a nuclear power plant, and the reactor well pool P1 and the spent fuel A partition plate 13.16 provided between the storage pool P2 and between the reactor well pool P1 and the temporary equipment storage pool P3 prevents water from flowing into the spent fuel storage pool P2 and the temporary equipment storage pool P3, respectively. A partition plate 13 installed between the reactor well pool P1 and the spent fuel storage pool P2 separates both pools P.
1. Space P2 is partitioned, and the partitioning method using this partition plate 13 is as shown in FIGS. 5 and 6. The support hardware 1 is attached to the mounting bracket 17 that is installed with the
The partition plate 13 is engaged and supported through the partition plate 8, and the partition plate 13 is pressed against the pool wall surface by its own weight, thereby achieving watertightness. Then, water is filled in the spent fuel storage boule P2, and as the water level rises, the force f=j pushing against the pool wall surface due to the water pressure increases. As a result, even if the 6% used fuel storage pool P2 is filled with water, water will not flow into the reactor/fer pool P1, making it possible to perform a water filling leak test on the spent fuel storage pool P2. On the other hand, the method of partitioning the equipment temporary storage pool P3 using the partition plate 16 is exactly the same. Then, for the reactor well pool P1, the partition plates 13.16 are removed, and each pool P2. P
By filling water at the same time as step 3, you can perform a water filling leak test.

However, such conventional partitioning devices for nuclear reactors and I/L pools have the following drawbacks. In other words, even if you try to fill only the reactor well pool P1 with water, you cannot do this independently, and you will have to fill the spent fuel storage pool P2 and equipment storage boule P3 with water at the same time. Atsuko.

However, these three pools P1. P2゜P3 is
In both cases, the inner surface is lined with stainless steel plates on the concrete surface, and after the lining work is completed, it is necessary to perform a water leakage test, and furthermore, after this water leakage test, various construction surfaces must be installed inside. . In particular, a large number of spent fuel storage racks R must be installed in the spent fuel pool P2, and the reactor pressure vessel B is installed in the seat of the reactor well pool P1. It is also necessary to install the equipment in container B. From this, each Boolean P1゜P2. The construction period of P3 varies considerably and therefore each bool PI,
P2. There will also be a significant delay in the period when the water leakage test can be carried out in P3.

Therefore, when conducting a leakage test with water in the reactor well pool P1, 1! I], the installation of used fuel storage boule P2 and spent fuel 1 storage rack R, etc. was delayed significantly, and the completion time of each boule P1, P2, P3 was delayed from that of reactor J le boule P1. It depends on the work process, and the adjustment work is complicated, complicated, and complicated. As a result, the completion of the operation floor in the reactor building will be delayed, leading to a crisis during the entire construction period of the nuclear power plant, resulting in major major problems extending over a long period of time. This is a contributing factor.

[Purpose of the invention]

The present invention was published in G1 in view of the conventional circumstances as described above, and its purpose is to independently fill the nuclear reactor pool, spent fuel storage pool, and equipment temporary storage pool with water. The objective is to develop a partition device for the reactor well pool that can significantly shorten the construction period, reduce man-hours, improve safety during chestnut production, and improve efficiency by making it possible to conduct water-filled leakage tests independently. .

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention provides a spent fuel storage pool and a temporary equipment storage pool on both sides of a reactor well pool in a nuclear power plant. The reactor well pool and the low storage storage pool are watertightly cut (43) between the reactor well pool and the low storage storage pool. Between the fuel storage pool and the reactor
The communication waterway installed between the pool and the equipment temporary storage pool is connected to the partition pit 1 formed with a larger cross section than the cross section of the communication waterway. The mounting brackets provided on both mounting surfaces on each side of each pool and the mounting brackets on at least the opposite side of the pool to be filled with water are attached to the support cellar 1, so that the pool can be filled with water. In addition, the partition plate is pressed against the mounting surface of the other side of the pool by water pressure, thereby blocking the communicating waterway.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

The symbol P1 shown in the figure is a reactor well pool, and spent fuel storage pools P1 are located on both sides of this 91 well pool.
2 and a temporary equipment storage pool P3 are installed between the reactor well pool P1 and the spent fuel storage pool P2, and between the reactor well pool P1 and the equipment temporary storage pool P3 ( ) The respective pools Pi, P2 or Pl, P3 are interconnected by a communicating waterway 1.4.

A partition pit 2.5 is formed in each of the communicating waterways 1 and 4 at approximately the center thereof and has a larger cross section than the cross section of the communicating waterways 1 and 4.

As shown in the figure, a communicating waterway 1 with a rectangular cross section C.
Compared to the depth and width in 4, the partition pitches [~2.5] are as large as the width of the connecting waterway 1.
, 4 are arranged in the partition pits 2, 5, so that the communication waterway port 1.4 is closed off.

Then, each 1-rule 1] 1, P in the partition pits 2 and 5
2. , P3 is provided with mounting brackets 7 on both mounting surfaces. As in the past, this mounting bracket 7 is mounted at a certain angle to the mounting surface.As shown in the figure, the mounting bracket 7 is shaped like a side cursor, and is attached to both sides of the openings of the communication channels 1 and 4 on the mounting surface. , attached to the top and bottom. In other words, when the mounting bracket 7 is in the partition pit 2,
In addition, in the partition pit 5, the reactor well pool P1 and the equipment temporary storage boule P3 are attached to each mounting surface. It has been placed.

Support metal fittings 8 protruding from both sides, upper and lower parts of the partition plates 3 and 6, which have a larger cross section than the cross section of the communication waterway 1.4, are engaged with the mounting fittings 7, so that the partition plates 3. At this point, the partition plates 3 and 6 are used to support the communication waterways 1 and 6.
4, so as to close the mounting surface in a watertight manner. The partition plate 3 is supported by the mounting surface of the reactor well pool P1 on the opposite side of the spent fuel storage boule P2 in the 11' cut pit 2 when the spent fuel storage boule P2 is filled with water. In addition, the partition plate 6 is connected to the partition pit 5.
In this case, the equipment temporary storage pool P3 filled with water is supported by the handle f4 of the reactor well pool P1, which is located on the opposite side of this pool P3. When the reactor well pool P1 is filled with water (L, the partition plate 3 at the partition pit 1-2 is
The 11 cutouts 6 in the partition pit 5 are supported on the mounting surface of the gutter, and the 11 cutouts 6 in the partition pit 5 are supported on the mounting surface of the gauve of the equipment temporary storage pool P3. In this way, the pool P1 which should be filled with water.
By P2 and P3, the partition plate 3.6 is divided into a partition pit 2°5
Change the mounting surface in , and select the mounting surface in ゎ for the opposite of that, and it will be supported there.

In addition, it is also possible to have support plates 1- on both mounting surfaces of the partition plates 3.6 to the partition pits 2 and 5. In this case, the support positions of the partition plates 3.6 should not be changed. Also, each pool P1. P2. Each P3 can be filled with water independently.

[Effect of invention]

The present invention, like the JS-F, provides a communication waterway with an 8Ω resistance between the atomic reactor well pool and the spent E material storage pool, and between the reactor well pool and the equipment temporary storage pool. A partition pit is formed in the partition pit, and NJ fittings are installed on both sides of the partition pit to attach the partition plate (= installation via the J fittings) corresponding to the pool to be filled with water. f1
Since the partition plate is supported by selecting the surface as the anti-λ・1 angle, the water pressure of the filled pool can push the partition plate against the other pool and block the communicating waterway. Therefore, the reactor well pool, spent fuel storage pool, and equipment temporary storage pool can each be filled with water independently. Therefore, the reactor well pool can be filled with water independently, and can be used for lining the spent fuel storage pool and equipment temporary storage pool with stainless steel plates, internal equipment installation work, and filling the reactor well pool with water for leakage tests. It is possible to perform each separately. As a result, the process is significantly shortened, the complexity of the work is improved, and the work efficiency can be greatly improved.

Therefore, by combining these various effects, it is recognized that there are excellent points such as a significant reduction in the construction period of a nuclear power plant and a significant reduction in costs.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is a plan view, FIG. 2 is a plan view of the main part, 3rd item 1 is a sectional side view of the main part, and FIGS. 〒FIG. 7 shows a conventional example, FIG. 4 is a sectional view, FIG. 5 is a plan view of FIG. FIG. 7 is a plane view of v■-■ line arrow 'f'>1g7i shown in FIG. Pl... Reactor well pool, P2... Spent fuel storage pool, P3... Temporary vessel storage pool, B...
Reactor pressure vessel, R...Spent fuel storage rack,
...Operation floor surface, 1...Communicating waterway, 2...11 cut bits, 3...Partition plate, 4...Communicating waterway, 5...
Partition bit, 6... Partition plate, 7... Take 1τ1 metal fitting,
8... Support hardware, 13... Partition plate, 16... Partition plate, 17... Mounting hardware, 18... Support hardware.

Claims (1)

[Claims] 1. A spent fuel storage pool and an equipment temporary storage pool are arranged on both sides of a reactor well pool in a nuclear power plant, and between the reactor well pool and the spent fuel storage pool,
Between the reactor well pool and the spent fuel storage pool, and between the reactor well pool and the equipment temporary storage pool, in a partition device that watertightly partitions the reactor well pool and the equipment temporary storage pool. A partition pit formed in each of the communicating waterways with a cross section larger than the cross section of the communicating waterway, and mounting brackets provided on both mounting surfaces of each pool in the partition pit, It is supported and set on a mounting bracket on at least the opposite side of the pool to be filled with water, and the water pressure of the filled pool presses the other pool against the mounting surface of the other pool, thereby blocking the communication waterway. A partition device for a nuclear reactor well pool, characterized by comprising a partition plate. 2. The reactor well pool partition device according to claim 1, wherein the partition plate is supported and set on each of both mounting surfaces in the partition pit.