JP5694076B2 - Transport assembly method for prefabricated structures - Google Patents

Description

  The present invention relates to a method for transporting and assembling a prefabricated structure, and more particularly, when a prefabricated structure having an opening is transported to an air pollution area and assembled, the internal space of the prefabricated structure is prevented from being contaminated. It concerns the method.

  When setting up a temporary office in an air-polluted area where radioactive substances, asbestos, dioxin and other pollutants are scattered, the prefabricated construction method with less work time at the site is suitable from the viewpoint of ensuring the safety of the site workers. Yes.

  This prefabricated construction method is a method of building a prefabricated structure in an area where air pollution is not caused, transporting it to the site, and then assembling the prefabricated structure to create a temporary office or the like.

In this prefabricated construction method, it is necessary to provide an opening for connecting another prefabricated structure on the side surface or the like of the prefabricated structure.
However, when a prefabricated structure is loaded and passed through an air-polluted area, or when a prefabricated structure is assembled at an air-contaminated installation site, outside air with contaminants enters the internal space from the opening of the prefabricated structure. The internal space may be contaminated.

If it passes through an area that is not air-contaminated or is assembled at an installation site that is not air-polluted, it is sufficient to prevent rain and wind, and the opening of the prefabricated structure is covered with a synthetic resin sheet.
However, in an air-polluted area, there is a concern that outside air with pollutants may enter the internal space due to strong wind or the like as long as the opening is covered with a synthetic resin sheet. Contaminants entering the interior space must be avoided because they can adversely affect the health of engineers and workers living inside the prefabricated structure.

  Therefore, a main object of the present invention is to prevent the internal space of the prefabricated structure from being contaminated when the prefabricated structure having the opening is transported and assembled to the air pollution area.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
Each prefabricated structure having openings assembled outside the air-polluted area is transported into the air-polluted area, and the prefabricated structures are arranged adjacent to each other with the openings facing each other in the air-polluted area. A prefabricated structure for connecting
Outside the air-polluted area, a closing plate is provided at the opening of the prefabricated structure, and further, a shielding sheet is provided to cover the periphery of the closing plate and the opening, and transported into the air-polluted area in this state,
In the air pollution area, the prefabricated structures are arranged adjacent to each other with the openings facing each other.
From one prefabricated structure, the workers (1) to (3) are sequentially performed by workers.
(1) Remove the closing plate of one prefabricated structure,
(2) Cutting at least the area corresponding to the opening of the shielding sheet of one prefabricated structure and the shielding sheet of the other prefabricated structure,
(3) Remove the closing plate of the other prefabricated structure,
This connects adjacent prefabricated structures,
A method for constructing a prefabricated structure.

(Function and effect)
By providing a closing plate at the opening of the prefabricated structure, even when strong winds blow when transporting the prefabricated structure, outside air with contaminants will not enter the internal space of the prefabricated structure, It is possible to prevent contamination of the internal space.
Moreover, by providing the shielding sheet so as to cover the periphery of the closing plate and the opening, it is possible to prevent contaminants from entering the internal space from a minute gap generated between the opening of the prefabricated structure and the closing plate.
Further, in the air pollution area, the prefabricated structure is arranged adjacent to each other with the opening portions facing each other, and (1) the closing plate of the one prefabricated structure is sequentially removed from one of the prefabricated structures by an operator. (2) cutting at least the region corresponding to the opening of the shielding sheet of one prefabricated structure and the shielding sheet of the other prefabricated structure; (3) removing the closing plate of the other prefabricated structure; By connecting adjacent prefabricated structures in this way, the internal spaces of adjacent prefabricated structures are connected without being exposed to the outside air, and contaminants can be prevented from entering the internal space.

<Invention of Claim 2>
After transporting the prefabricated structure into the air pollution area,
Before placing the prefabricated structure openings adjacent,
The method for constructing a prefabricated structure according to claim 1, wherein a fixing agent is provided to fix the contaminants adhering to the outer surface of the shielding sheet to the shielding sheet.

(Function and effect)
After transporting the prefabricated structure into the air-polluted area and before placing the opening of the prefabricated structure adjacent to the prefabricated structure, a sticking agent that fixes the contaminants adhering to the outer surface of the shielding sheet to the shielding sheet is added. By applying, the contaminant attached to the shielding sheet during transportation and assembly work can be fixed to the shielding sheet, and when removing the shielding sheet, the contaminant falls and scatters in the internal space of the prefabricated structure. Can be prevented.

<Invention of Claim 3>
After transporting the prefabricated structure into the air pollution area,
After excising at least the area corresponding to the opening of the shielding sheet of one prefab structure and the shielding sheet of the other prefab structure,
The method for constructing a prefabricated structure according to claim 1, wherein a sealing material for sealing the inner peripheral surface of the connecting portion of the opening of the prefabricated structure is applied.

(Function and effect)
After the prefabricated structure is transported into the air-polluted area, the opening of the prefabricated structure is cut after at least the area corresponding to the opening of the shielding sheet of one prefabricated structure and the shielding sheet of the other prefabricated structure is cut off By applying a sealing material that seals the inner peripheral surface of the connecting portion, it is possible to prevent contaminants from falling and scattering from the connecting portion of the opening of the prefabricated structure.

<Invention of Claim 4>
Fix the closing plate of the one prefabricated structure so that it can be removed from the inside,
Fixing the other prefabricated structure closing plate so that it can be removed from the outside;
Each of the prefabricated structure and the closing plate of the other prefabricated structure,
The method for constructing a prefabricated structure according to claim 1, wherein an operator removes the prefabricated structure from one of the prefabricated structures.

(Function and effect)
The closing plate of the one prefabricated structure is fixed so that it can be removed from the inside, and the closing plate of the other prefabricated structure is fixed so that it can be removed from the outside, and the one prefabricated structure and the other prefabricated structure are closed. Since each worker removes each plate from the one prefabricated structure, the load on the worker when removing the closing plate can be reduced.

<Invention of Claim 5>
When placing the opening of the prefabricated structure adjacent to each other,
Adhering each shielding sheet of the one prefab structure and the other prefab structure with an adhesive applied to the outer surface of the shielding sheet,
When cutting at least the area corresponding to the opening of the shielding sheet of one prefabricated structure and the shielding sheet of the other prefabricated structure,
Cut these shielding sheets together,
The method for constructing a prefabricated structure according to claim 1, wherein the prefabricated structure is taken into one prefabricated structure and disposed of.

(Function and effect)
When the openings of the prefabricated structure are arranged adjacent to each other, the one prefabricated structure and the shielding sheet of the other prefabricated structure are bonded with an adhesive applied to the outer surface of the shielding sheet, and the one prefabricated structure is bonded. When cutting out at least the area corresponding to the opening of the shielding sheet of the other prefabricated structure and the shielding sheet of the other prefabricated structure, these shielding sheets are cut out as one body, taken into one of the prefabricated structures, and discarded for use as a shielding sheet. It is possible to confine the pollutant in between, and it is possible to prevent the pollutant from falling from the shielding sheet and scattered.

<Invention of Claim 6>
After transporting the prefabricated structure into the air pollution area,
Before placing the prefabricated structure openings adjacent,
Providing a sticking agent to fix the contaminants adhering to the outer surface of the shielding sheet to the shielding sheet;
When placing the opening of the prefabricated structure adjacent to each other,
Adhering each shielding sheet of the one prefab structure and the other prefab structure using the fixing agent,
When cutting at least the area corresponding to the opening of the shielding sheet of one prefabricated structure and the shielding sheet of the other prefabricated structure,
Cut these shielding sheets together,
The method for constructing a prefabricated structure according to claim 1, wherein the prefabricated structure is taken into one prefabricated structure and disposed of.

(Function and effect)
After transporting the prefabricated structure into the air pollution area, before adhering the opening of the prefabricated structure, it is fixed to fix the contaminants adhering to the outer surface of the shielding sheet to the shielding sheet. When the opening of the prefabricated structure is disposed adjacently, the shielding sheets of the one prefabricated structure and the other prefabricated structure are bonded to each other using the fixing agent. When cutting at least the area corresponding to the opening of the shielding sheet and the shielding sheet of the other prefabricated structure, these shielding sheets are cut out as one body, taken into one of the prefabricated structures, and discarded for use. It is not necessary to use an adhesive to be bonded, so that material costs can be saved and the adhesive application operation can be omitted.

  As described above, according to the present invention, the internal space of the prefabricated structure can be prevented from being contaminated when the prefabricated structure having the opening is transported and assembled to the air pollution area.

It is the figure which has arrange | positioned the prefabricated structure concerning this invention in parallel. It is sectional drawing of the XX part of the prefabricated structure of FIG. It is an enlarged view of the connection part of FIG. It is sectional drawing which adjoined the prefabricated structure of FIG. 3, and is an enlarged view of a connection part. It is sectional drawing after removing a closing board from one prefabricated structure, and is an enlarged view of a connection part. It is sectional drawing after peeling off the shielding sheet | seat from a prefabricated structure, and is an enlarged view of a connection part. It is the figure which removed the closing board from the other prefabricated structure, and apply | coated the sealing compound, and is an enlarged view of a connection part.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram in which prefabricated structures 1 according to the present invention are arranged in parallel.
The prefabricated structure 1 may be of any type as long as a prefabricated structure aggregate such as a temporary office is completed when connected. Examples of the prefabricated structure 1 include modified marine containers and railroad containers, and units of a split carry-in house sold by a housing maker for a temporary office at a construction site.
Examples of the prefabricated structure assembly in which the prefabricated structures 1 are connected include a field office, a resting place, a restaurant, a karaoke room, and a trunk room.

In the following description, a container obtained by modifying a 20-foot marine container as the prefabricated structure 1 will be described as an example. When two or more containers are connected, a temporary office is completed.
Further, as an air-polluted area, a radio-polluted area contaminated with radioactive substances will be described as an example.

Temporary offices installed in radioactively contaminated areas generally have a rest space, a dust removal space to prevent radioactivity from entering the office, a dressing space, an air shower space, and the like. Therefore, such a temporary office needs to prepare a container 1 for each space and connect the plurality of containers 1 together.
In the following description, for convenience of explanation, the description will focus on the portion connecting the two containers 1A, 1B.

  Further, the container 1 having the dust removal space, the dressing space, and the shower space and the container 1 having the rest space can be connected to provide a temporary office composed of the two containers 1. Can be applied.

The work of remodeling the container 1 is performed outside the radioactively contaminated area. The modified container 1 is transported through the radioactively contaminated area and assembled in the radioactively contaminated area.
During the transportation and assembly, it is necessary to take the following measures so that the interior surface and the internal space of the container 1 are not contaminated by radioactivity.

FIG. 2 is a cross-sectional view of the XX portion of the containers 1A and 1B of FIG.
Openings M having the same shape are provided on the side surfaces of the containers 1A and 1B, and the openings M are connected. If the opening M is simply covered with the synthetic resin sheet, the sheet flutters when strong wind blows during transportation and assembly of the containers 1A and 1B, and there is a concern that outside air contaminated with radioactivity enters the containers 1A and 1B.
Therefore, the present invention has a structure in which outside air contaminated with radioactivity does not enter the containers 1A and 1B even when a strong wind blows. A specific structure will be described with reference to FIG.

FIG. 3 is an enlarged view of the connecting portion of FIG.
In the remodeling work performed outside the radioactive contamination area, the closing plate 3 is provided in the opening M. In FIG. 3, the thickness of the closing plate 3 is substantially the same as the thickness of the wall surface 2 of the container 1, but is not limited thereto. The thickness of the closing plate 3 may be thicker than the thickness of the wall surface 2 or may be thinner.

  On the other hand, the positions of the outer surface of the wall 2 of the container 1 and the outer surface of the closing plate 3 are set to be linear or substantially linear in plan view, or the position of the outer surface of the closing plate 3 is set to the outer surface of the wall 2 of the container 1. It is preferable to be located inside the container 1 relative to the position. When the outer surface of the closing plate 3 is outside the outer surface of the wall 2 of the container 1, when the containers 1 </ b> A and 1 </ b> B are adjacent to each other, the opposing closing plates 3 </ b> A and 3 </ b> B are adjacent, but between the opposing walls 2. This is because the containers 1A and 1B cannot be brought into close contact with each other because a gap is left.

  For the closing plate 3, for example, a material made of a material such as an iron plate, an aluminum plate, or reinforced plastic is used.

Further, it is desirable to provide a gasket 5 </ b> A between the wall 2 of the container 1 and the closing plate 3. This is because by providing the gasket 5 </ b> A, it is possible to close a minute gap that is vacant between the wall 2 and the closing plate 3, and to prevent the radioactive substance from entering the container 1.
As an alternative to the gasket 5A, packing may be used.

  The gasket 5A and packing include, for example, natural rubber, nitrile rubber, silicone rubber, acrylic rubber, styrene butadiene rubber, fluorine rubber, ethylene propylene rubber, and other synthetic rubber, tetrafluoroethylene rubber (Teflon) resin, Plant fibers such as hemp and cotton, and leather can be used. Further, iron alloy, non-ferrous alloy, ceramic, graphite, or the like may be used.

  In FIG. 3, the closing plate 3 has a U-shaped cross-sectional shape, and a screw hole is provided in advance in the side surface of the closing plate 3, the gasket 5 </ b> A, and the wall 2. Then, the screw 6 is inserted while being rotated from the side surface of the closing plate 3, the gasket 5 </ b> A is penetrated, and attached to the wall 2, whereby the closing plate 3 is fixed to the wall 2.

  The fixing position of the screw 6 for attaching the closing plate 3 is provided on either the indoor side or the outside of the container 1.

However, if the container 1 does not have the door 10 and there is only one opening M, the closing plate 3 cannot be inserted into the container 1 if the closing plate 3 is fixed to the opening M. Therefore, the closing plate 3 is removed from the outside of the container 1. Therefore, the screw 6 needs to be fixed outside.
Further, when the container 1 does not have the entrance door 10 and there are two or more openings M, if the closing plates 3 are fixed to all the openings M, the container 1 cannot enter the container 1, so that at least one closing plate 3 is attached to the container 1. In order to be able to remove from the outside, the fixing position of the screw 6 of at least one closing plate 3 needs to be outside.

  When the container 1 has the door 10, the fixing plate 3 can be removed from the indoor side by entering the container 1 from the door 10 even if the closing plate 3 is fixed to the opening M. The position may be provided outside or indoors.

A specific fixing position of the screw 6 is determined in consideration of a procedure for removing the closing plate 3 of the container 1.
In FIG. 2, since it is assumed that the worker enters the container 1A from the door 10 provided at the lower left of the container 1A and removes the closing plate 3A from the indoor side, the fixing position of the screw 6 is set on the indoor side. Provided.
As will be described in detail later, since it is assumed that the closing plate 3B of the container 1B is removed from the outside of the container 1B, a fixing position of the screw 6 is provided on the outside.

  As shown in FIG. 2, the position where the screws 6 of the closing plates 3A and 3B provided in the opposing openings M of the opposing containers 1A and 1B are attached is such that the closing plate 3A to be removed first is on the indoor side. The closing plate 3B opposite to 3A is preferably outside. This is because the load on the worker can be reduced.

  In addition, when an operator enters the room of the container 1 for the first time, it is preferable to use the doorway 10. It is possible to enter the room by removing the closing plate 3, but if the closing plate 3 is removed, there is a possibility that contaminated outside air may enter the room.

  As described above, by attaching the closing plate 3 to the opening M, when the container 1 is transported, outside air enters the room of the container 1 even if it passes through the radioactively contaminated area, and the interior surface and the interior. The situation where the space is contaminated can be avoided.

  However, it is inevitable that radioactive material adheres to the outer surface of the closing plate 3. Therefore, in the process of assembling the container 1 on site and making an office, when the closing plate 3 is removed and removed, the radioactive material attached to the closing plate 3 falls into the container 1, resulting in the interior of the container 1. May contaminate surfaces and interior spaces.

  Therefore, in the present invention, the shielding sheet 4 is provided so as to cover the periphery of the closing plate 3 and the opening M. Hereinafter, the role of the shielding sheet 4 will be described in detail with reference to FIGS.

  As shown in FIG. 3, in the process of remodeling the container 1 outside the radioactively contaminated area, after attaching the closing plate 3, the shielding sheet 4 is pasted so as to cover the periphery of the closing plate 3 and the opening M. wear.

  As this shielding sheet 4, what consists of raw materials, such as a synthetic resin, a vinyl chloride, polyethylene, is mentioned, for example.

  The shielding sheet 4 is firmly attached to the opening outer peripheral portion N of the container 1 so that the shielding sheet 4 does not peel off during transportation of the container 1. On the other hand, the shielding sheet 4 is not affixed to the closing plate 3 inside the opening M, or even if it is affixed, it can be easily peeled off. It is because the load of the operation | work which removes the closing plate 3 can be reduced by making it possible to isolate | separate the closing plate 3 and the shielding sheet 4 easily. This point will be described in detail later.

  Moreover, even if it does not affix the shielding sheet 4 to the gasket 5A provided between the closing plate 3 and the wall 2, it is set to such an extent that it can be easily peeled off. It is because the load of the operation | work which removes gasket 5A can be reduced by enabling it to isolate | separate gasket 5A and the shielding sheet 4 easily.

Furthermore, the gasket 5B is provided also on the outer wall of the opening outer peripheral part N of the container 1, and the shielding sheet 4 is affixed from the outside of the gasket 5B so as to enclose the gasket 5B. Even if the radioactive substance passes between the shielding sheet 4 and the wall 2 and enters the inside, the gasket 5B can prevent the radioactive substance from entering the inside any more.
In addition, since it is necessary to stick the shielding sheet 4 firmly so that it can endure the wind pressure etc. during conveyance, the shielding sheet 4 is stuck so that the gasket 5B may be included.

  As shown in FIG. 2 and FIG. 3, after attaching the closing plate 3, the shielding sheet 4, the gaskets 5 </ b> A, 5 </ b> B to the opening M of the container 1 in the radioactive non-contaminated area, it is loaded on a truck or the like to the radioactively contaminated area. Carry.

(Assembly process of container 1)
Hereinafter, the process of assembling the container 1 in the radioactively contaminated area will be described with reference to FIGS.
After loading and unloading the containers 1A and 1B in the radioactively contaminated area, the containers 1A and 1B are brought close to each other as shown in FIG. 2, and the openings M of the containers 1A and 1B are opposed to each other.

  Thereafter, a sticking agent for fixing the radioactive substance attached to the outer surface of the shielding sheet 4 to the shielding sheet 4 is applied to the outer surface of the shielding sheet 4. With this fixing agent, the radioactive substance attached to the shielding sheet 4 can be fixed to the shielding sheet 4 during transportation or assembling work, and when the shielding sheet 4 is later removed, the radioactive substance falls into the internal space of the container 1. And can be prevented from scattering.

Examples of the type of the sticking agent include 3M spray glue 55 and G17.
In addition to spraying this sticking agent, there is a method of applying with a brush.

After the fixing agent is applied to the outer surface of the shielding sheet 4, an adhesive for bonding the opposing shielding sheets 4A and 4B is further applied to the outer surface of the shielding sheets 4A and 4B.
As will be described in detail later, when the shielding sheets 4A and 4B facing each other in the prefabs 1A and 1B are bonded with the adhesive, at least the region corresponding to the opening M of the shielding sheets 4A and 4B is cut off. The radioactive material is confined between them, the shielding sheets 4A and 4B are cut out as one body, taken into one prefabricated 1A and discarded, and the radioactive material falls into the container 1A from the shielding sheets 4A and 4B. , Can prevent scattering.

Examples of the type of the adhesive include 3M spray glue 55 and G17.
In addition to spraying this adhesive, there is a method of applying it with a brush.

  In addition, the said adhesive agent which fixes a radioactive substance and the said adhesive agent which adhere | attaches the shielding sheet 4 can be used together by one adhesive agent. By using it together, it is possible to reduce material costs and labor of application work.

  When using together, it is necessary to use the sticking agent which has the effect | action which adheres a radioactive substance, and the effect | action which adhere | attaches the shielding sheet 4. FIG. Specific examples include the above-mentioned 3M spray paste 55 and G17.

  In addition, before the two opposing shielding sheets 4A and 4B are bonded, the caulking agent 7 is applied to a region corresponding to the outer periphery N of the opening on the outer surface of the shielding sheet 4. By applying the caulking agent 7, the adhesion of the opening outer peripheral portion N of the two shielding sheets 4A and 4B can be enhanced. Therefore, in a later process, after the region corresponding to the opening M of the shielding sheets 4A and 4B is cut out, the two pieces of the shielding sheets 4A and 4B remain in the region corresponding to the outer periphery N of the opening. It is possible to prevent the radioactive material from entering the room from the outside through the gaps of 4B.

  FIG. 4 is a cross-sectional view in which the containers 1A and 1B are adjacent to each other, and is an enlarged view of a connecting portion. As described above, the opposing shielding sheets 4 </ b> A and 4 </ b> B are bonded through the adhesive 9 and the caulking agent 7.

Then, after the containers 1A and 1B are adjacent to each other, an operator enters the container 1A from the opening / closing door 10 provided in the container 1A.
The worker who entered the container 1A loosens the screw 6 holding the closing plate 3A provided in the opening M of the container 1A, and removes and removes the closing plate 3A.

  When removing the closing plate 3A, the shielding sheets 4A and 4B outside the closing plate 3A must be separated and the shielding sheets 4A and 4B must not be broken. This is because radioactive materials are attached to the outer surfaces of the shielding sheets 4A and 4B, and therefore, if the shielding sheets 4A and 4B are broken, the radioactive materials may enter the room.

In order to reduce the labor of separating the closing plate 3 from the shielding sheet 4 and to prevent the shielding sheet 4 from being torn, as described above, the shielding sheet 4 is not attached or attached to the closing plate 3. However, it is desirable to make it easy to peel off.
FIG. 5 is a cross-sectional view after removing the closing plate 3A from the container 1A, and is an enlarged view of a connecting portion.

After removing the closing plate 3A, the shielding sheet 4A is pushed by an operator's hand and the shielding sheets 4A and 4B are pressure-bonded. And it is confirmed whether shielding sheet 4A, 4B was adhere | attached with the said adhesive agent.
Then, according to the dimension of the outer periphery of the opening part M, shielding sheet 4A, 4B is cut | disconnected with cutters, such as a knife.
As described above, since the two shielding sheets 4A and 4B are bonded by the adhesive 9, the two shielding sheets 4A and 4B are cut at a time when cutting. This is because radioactive substances are sandwiched between the two shielding sheets 4A and 4B so that the radioactive substances are not dropped into the container 1.
The cut shielding sheets 4A and 4B are put in a bag or the like at the cut place so as not to drop the radioactive substance, and are removed from the container 1A.

In addition, in the opening outer peripheral part N, it will be in the state in which the piece of shielding sheet 4A, 4B remained.
FIG. 6 is a cross-sectional view after the shielding sheets 4A and 4B have been cut off from the prefab 1 in this way, and is an enlarged view of the connecting portion.

After removing the shielding sheets 4A and 4B, the closing plate 3B provided in the opening M of the container 1B is removed.
In the present invention, the closing plate 3B is preferably screwed from the outside.

If the closing plate 3B is screwed from the indoor side and the opening / closing door 10 is also provided on the container 1B, an operator may enter the container 1B from the opening / closing door 10 and remove the closing plate 3B from the indoor side of the container 1B. it can.
However, in that case, after the worker in the container 1A removes the shielding sheets 4A and 4B, he must go outside one end, wrap around the opening / closing door 10 of the container 1B, and enter the container 1B. This is because it takes a lot of work.

  Therefore, by screwing the closing plate 3B from the outside, the operator can remove the closing plate 3B without going out of the container 1A, and it is possible to reduce labor and work time.

  Thus, the containers 1A and 1B are connected by removing the closing plates 3A and 3B and cutting off the shielding sheets 4A and 4B.

If there are gaps between the wall 2, the gasket 5 </ b> B, the pieces of the shielding sheets 4 </ b> A and 4 </ b> B, and the components of the caulking agent 7, radioactive substances may enter the room from the outside of the container 1. In addition, even when radioactive materials remain between the members, the radioactive materials may fall into the room and be scattered.
Therefore, it is preferable to apply the sealing agent 8 to the indoor side wall surface of each member after the shielding sheets 4A and 4B are cut off and before the closing plate 3B is removed or after the closing plate 3B is removed.

  FIG. 7 is a view in which the closing plate 3B is removed from the prefab 1B and the sealing agent 8 is applied, and is an enlarged view of a connecting portion.

  In the above description, the procedure for connecting the two containers 1A and 1B has been described for convenience of explanation. However, other containers can be connected by the same procedure. By combining a plurality of containers 1 in this way, a temporary office where the room is not contaminated with radioactive substances can be made even in a radioactively contaminated area.

1: Prefabricated structure, container, 1A: (one) container, 1B: (other) container, 2: wall surface, 3: closing plate, 3A: (one) closing plate, 3B: (other) closing plate 4: shielding sheet, 4A: (one) shielding sheet, 4B: (other) shielding sheet, 5A: gasket (between wall and closing plate), 5B: gasket (on outer wall of container), 6: screw 7: Caulking agent, 8: Sealing agent, 9: Adhesive, 10: Opening / closing door M: Opening, N: Opening outer periphery

Claims (6)

Each prefabricated structure having openings assembled outside the air-polluted area is transported into the air-polluted area, and the prefabricated structures are arranged adjacent to each other with the openings facing each other in the air-polluted area. A prefabricated structure for connecting
Outside the air-polluted area, a closing plate is provided at the opening of the prefabricated structure, and further, a shielding sheet is provided to cover the periphery of the closing plate and the opening, and transported into the air-polluted area in this state,
In the air pollution area, the prefabricated structures are arranged adjacent to each other with the openings facing each other.
From one prefabricated structure, the workers (1) to (3) are sequentially performed by workers.
(1) Remove the closing plate of one prefabricated structure,
(2) Cutting at least the area corresponding to the opening of the shielding sheet of one prefabricated structure and the shielding sheet of the other prefabricated structure,
(3) Remove the closing plate of the other prefabricated structure,
This connects adjacent prefabricated structures,
A method for constructing a prefabricated structure. After transporting the prefabricated structure into the air pollution area,
Before placing the prefabricated structure openings adjacent,
The method for constructing a prefabricated structure according to claim 1, wherein a fixing agent is provided to fix the contaminants adhering to the outer surface of the shielding sheet to the shielding sheet. After transporting the prefabricated structure into the air pollution area,
After excising at least the area corresponding to the opening of the shielding sheet of one prefab structure and the shielding sheet of the other prefab structure,
The method for constructing a prefabricated structure according to claim 1, wherein a sealing material for sealing the inner peripheral surface of the connecting portion of the opening of the prefabricated structure is applied. Fix the closing plate of the one prefabricated structure so that it can be removed from the inside,
Fixing the other prefabricated structure closing plate so that it can be removed from the outside;
Each of the prefabricated structure and the closing plate of the other prefabricated structure,
The method for constructing a prefabricated structure according to claim 1, wherein an operator removes the prefabricated structure from one of the prefabricated structures. When placing the opening of the prefabricated structure adjacent to each other,
Adhering each shielding sheet of the one prefab structure and the other prefab structure with an adhesive applied to the outer surface of the shielding sheet,
When cutting at least the area corresponding to the opening of the shielding sheet of one prefabricated structure and the shielding sheet of the other prefabricated structure,
Cut these shielding sheets together,
The method for constructing a prefabricated structure according to claim 1, wherein the prefabricated structure is taken into one prefabricated structure and disposed of. After transporting the prefabricated structure into the air pollution area,
Before placing the prefabricated structure openings adjacent,
Providing a sticking agent to fix the contaminants adhering to the outer surface of the shielding sheet to the shielding sheet;
When placing the opening of the prefabricated structure adjacent to each other,
Adhering each shielding sheet of the one prefab structure and the other prefab structure using the fixing agent,
When cutting at least the area corresponding to the opening of the shielding sheet of one prefabricated structure and the shielding sheet of the other prefabricated structure,
Cut these shielding sheets together,
The method for constructing a prefabricated structure according to claim 1, wherein the prefabricated structure is taken into one prefabricated structure and disposed of.

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