JP2023172159A - Tent for work - Google Patents

Abstract

To provide a tent for work that has simple constitution and can reduce production of secondary wastes.SOLUTION: A tent for work is used to carry a contaminated object in and carry out work, and comprises a frame which has an air colum expands with air, a lining member which is fitted detachably inside the frame to form a work space inside, and an exhaustion part which discharges the air in the work space to the outside. Consequently, simple constitution can be actualized and production of secondary wastes is reducible.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD This disclosure relates to a work tent.

For example, at nuclear facilities, when inspecting or repairing equipment and equipment contaminated with radioactive materials, a simple tent-like work area is created to prevent the radioactive materials attached to the equipment from scattering. . Until now, it has been common to use metal pipes and polyethylene curing sheets to form work zones for each work. However, since assembly and disassembly are time-consuming, there is a need for a technology that can form work zones using a simpler method.

Therefore, for example, a method of using an air tent described in Patent Document 1 below as a work area can be considered. The interior of this air tent is divided into a plurality of compartments (rooms), and each compartment is provided with negative pressure.

JP 2022-11502 Publication

However, the air tent according to Patent Document 1 is entirely formed in one piece. For this reason, everything must be disposed of after work, including uncontaminated parts. In other words, a large amount of secondary waste is generated.

The present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide a working tent that has a simple configuration and can reduce the generation of secondary waste.

In order to solve the above problems, a work tent according to the present disclosure is a work tent for carrying in contaminated objects and carrying out work, and includes a frame having an air column that is inflated by air; The apparatus includes a lining member that is detachably attached to the inside of the lining to form a working space therein, and an exhaust part that exhausts air in the working space to the outside.

According to the present disclosure, it is possible to provide a working tent that has a simple configuration and can reduce the generation of secondary waste.

FIG. 1 is a front view showing the configuration of a working tent according to an embodiment of the present disclosure. FIG. 1 is a plan view showing the configuration of a working tent according to an embodiment of the present disclosure. 1 is a plan view showing the configuration of a work space of a work tent according to an embodiment of the present disclosure.

Hereinafter, a working tent 1 according to an embodiment of the present disclosure will be described with reference to FIGS. 1 to 3. The work tent 1 is set up indoors to prevent the scattering of pollutants when dismantling and repairing contaminated equipment at a nuclear power plant, for example. Moreover, this work tent 1 may be used not only for nuclear power plants but also for handling chemically contaminated equipment or biologically contaminated equipment.

(Composition of work tent)
As shown in FIG. 1 or 2, the working tent 1 includes a plurality of frames 10, a plurality of lining members 20, an air supply section 30, and an exhaust section 40.

The frame 10 has an air column 11 and an auxiliary frame 12. The air column 11 has a bag shape that expands when air is injected into it. The air column 11 has a pair of column parts 13 extending upward from the floor surface, and a beam part 14 connecting the upper ends of these column parts 13. The column portion 13 and the beam portion 14 are integrally formed. That is, by injecting air from any one location, the column portions 13 and beam portions 14 are filled with air, and the frame 10 is erected on the floor surface.

The auxiliary frame 12 is provided to supplement the rigidity of the frame 10 when the pressure within the air column 11 is insufficient. The auxiliary frame 12 includes a pair of first members 15 extending along the column portions 13 and a second member 16 extending along the beam portions 14. These first member 15 and second member 16 have a pipe shape made of a light metal such as aluminum, for example. It is desirable that the auxiliary frame 12 be attached to the air column 11 from the outside after the air column 11 is filled with air. Note that it is also possible to adopt a configuration in which the auxiliary frame 12 is omitted. In other words, the frame 10 can stand on its own using only the air column 11 described above. Furthermore, even when the auxiliary frame 12 is provided, it is possible to omit the second member 16 and adopt a configuration in which only the first member 15 is provided.

A plurality of frames 10 (for example, three frames) are provided at intervals in a horizontal direction perpendicular to the direction in which the beam portion 14 extends.

The lining member 20 is provided to form a work space 50 inside the frame 10. The lining member 20 is detachably attached to the frame 10. The lining member 20 is attached to the frame 10 by, for example, a fastener or hook-and-loop fastener. The lining member 20 has a bottom surface that contacts the floor surface, a ceiling surface that faces the bottom surface, and a side surface that vertically connects the bottom surface and the ceiling surface. That is, the lining member 20 forms a closed space inside.

As shown in FIG. 3, the work space 50 is divided into a plurality of sections (three as an example). The lining member 20 is provided independently for each of these sections. That is, it is possible to attach/detach/replace the lining member 20 for each section.

When carrying a contaminated object into the work space 50 for work, three sections are required: a survey section 51, an undressing section 52, and a work section 53. In the example of FIG. 3, a survey section 51 is located at the upper right in the figure, and an undressing section 52 is provided adjacent to the survey section 51 in the width direction of the work tent 1. An entrance/exit 60 is formed in the survey section 51 and communicates with the outside. The survey section 51 and the undressing section 52 are communicated through a first door 61.

Further, a first ventilation hole 81 is provided between the survey section 51 and the undressing section 52 to communicate them. Similarly, a second ventilation hole 82 is provided between the undressing section 52 and the working section 53 to communicate them. The first ventilation hole 81 and the second ventilation hole 82 are formed not for the movement of workers or goods, but for the purpose of creating a flow of air and adjusting the pressure between each section. When the air in the work space 50 is sucked by the exhaust section 40 (described later), air flows through the first ventilation hole 81 and the second ventilation hole 82, and as a result, the air flows through the survey section 51, the undressing section 52, and the work section 53 in this order. The pressure decreases. In other words, a pressure gradient is created. Note that the sizes of the first vent hole 81 and the second vent hole 82 are adjusted as appropriate depending on the pressure of the air column 11, the volume of the work space 50, the area of the wall surface, etc. Moreover, it is also possible to provide a flap-shaped member so that the opening area of the first ventilation hole 81 and the second ventilation hole 82 can be adjusted.

The work section 53 is adjacent to the survey section 51 and the undressing section 52 from the depth direction of the work tent 1. The work section 53 has a larger volume than the survey section 51 and the undressing section 52. The work section 53 communicates with the undressing section 52 through a second door 62. The entrance/exit 60, the first door 61, and the second door 62 can all be opened and closed using fasteners. Moreover, since the lining member 20 is independent for each compartment as described above, the first door 61 and the second door 62 are double doors. Furthermore, an intake port 63 for taking in air from the outside is formed in the survey section 51. An exhaust port 64 is formed in the work section 53 for discharging internal air to the outside.

In the survey section 51, work such as confirmation of the radiation exposure status of workers is performed. In the undressing section 52, workers wear protective clothing and protective masks. In the work section 53, objects to be worked are brought in and various kinds of work are performed. In other words, the degree of contamination is highest in the order of work section 53, undressing section 52, and survey section 51.

Further, as shown in FIG. 2, an opening 65 that can be opened and closed is formed in the ceiling of the lining member 20 corresponding to the work section 53. This opening 65 can be opened and closed using a fastener, for example. Through the opening 65, large working equipment is carried in and out from the ceiling surface.

Furthermore, a lighting device 70 for illuminating the inside of the work section 53 is provided on the outer surface of the lining member 20 around the opening 65. The lighting device 70 is, for example, an LED. Since the lining member 20 has a certain degree of translucency, a sufficient illumination effect can be obtained even if the lining member 20 is irradiated with light from an LED from the outside.

The air supply unit 30 is a device for supplying air to the air column 11 (see FIG. 2). The air supply unit 30 is, for example, a blower fan. Further, a small compressor may be used as the air supply section 30. The air supply unit 30 supplies air to each of the plurality of (three) air columns 11. In other words, one or more air supply units 30 may be provided. The air supply unit 30 continuously or intermittently supplies air to the air column 11 depending on the internal pressure of the air column 11. That is, in this case, one or more air columns 11 may be provided with pressure sensors that measure the internal pressure of the air columns 11.

The exhaust section 40 is a device for exhausting air in the work space 50 to the outside. The exhaust section 40 is, for example, a blower fan. As shown in FIG. 3, the exhaust section 40 has a filter section 41 for collecting pollutants generated within the work space 50. As the filter section 41, a HEPA filter or the like is preferably used. By driving the exhaust section 40, air flows from the intake port 63 of the survey section 51 toward the exhaust port 64 of the undressing section 52 and the work section 53 in this order (arrow in FIG. 3). . The pollutants collected by the filter section 41 are collected and treated together with the filter section 41 as secondary waste.

Note that the pressure (negative pressure) of the work space 50 exhausted by the exhaust section 40 and the pressure of the air supplied to the air column 11 by the air supply section 30 are as long as the air column 11 is erected. It is desirable that the balance be adjusted as appropriate.

(effect)
Next, an example of a procedure for setting up the work tent 1 will be explained. When setting up the work tent 1, first, before injecting air into the air column 11, the lining member 20 is attached to the inside of the frame 10. Thereafter, air is supplied to each air column 11 by the air supply section 30. As a result, the air columns 11 are erected on the floor surface to form the frame 10. As a result, the lining member 20 inside the frame 10 is expanded, and a work space 50 is formed. After that, the auxiliary frame 12 is attached to the frame 10. Thereafter, the exhaust section 40 is connected to the exhaust port 64 and exhaust is started. Thereby, the work of setting up the working tent 1 is completed.

Here, in conventional tents, even if the work space 50 is divided into a plurality of sections, the entire tent is generally formed in one piece. Therefore, if contamination occurs, everything must be disposed of after work, including clean parts that are not contaminated. In other words, there was a problem in that a large amount of secondary waste was generated. Therefore, the working tent 1 according to the present embodiment adopts the above-mentioned configurations.

According to the above configuration, the work space 50 can be easily formed in a short time by simply inflating the air column 11, setting up the frame 10, and attaching the lining member 20 to the frame 10. Furthermore, since the lining member 20 is removably attached to the frame 10 using a fastener or the like, if the lining member 20 becomes contaminated, only the lining member 20 needs to be discarded, and the air column 11 can be removed. The containing frame 10 can be reused for the next work. This makes it possible to significantly reduce the amount of secondary waste generated per operation.

Further, since the frame 10 has the air columns 11, the frame 10 has more elasticity than other highly rigid materials. Therefore, even if an external force is applied to the working tent 1, the air column 11 will preferentially deform elastically to absorb the external force. Thereby, even if the frame 10 is deformed, the lining member 20 can continue to be used without being damaged.

Further, according to the above configuration, since the work space 50 is divided into a plurality of sections, it is possible to use these plural sections according to the purpose of the work and the degree of contamination. In this embodiment, as described above, the work space 50 is divided into three sections: the survey section 51, the undressing section 52, and the work section 53. This makes it possible to precisely manage contamination levels in each section. Moreover, since the lining members 20 are independent for each compartment, only the lining members 20 of the contaminated compartments can be discarded, and the remaining lining members 20 of the uncontaminated compartments can be reused. This makes it possible to further reduce secondary waste.

Further, according to the above configuration, the plurality of sections are in communication with each other. Specifically, the survey section 51 and the undressing section 52 communicate with each other through a first door 61, and the undressing section 52 and the work section 53 communicate with each other through a second door 62. This allows workers to move back and forth between these sections.

In addition, according to the above configuration, an air flow is formed from the survey section 51, which is the section with the lowest degree of contamination, toward the work section 53, which is the section with the highest degree of contamination. In other words, no air flow is formed from the work section 53 toward the survey section 51. The air within the working compartment 53 is exhausted by the exhaust section 40 and pollutants are collected by the filter section 41. Therefore, the possibility of leakage of contaminants to the outside can be reduced. Therefore, it is possible to further improve work safety.

Furthermore, according to the above configuration, since the filter section 41 collects the pollutants, it is possible to reduce the possibility that the pollutants will be scattered to the outside. Further, by appropriately replacing only the filter section 41, the exhaust section 40 can be continued to be used for a long period of time. This makes it possible to reduce the cost of materials required for the work.

Further, according to the above configuration, since the frames 10 are arranged at intervals in the horizontal direction, the lining member 20 is exposed to the outside between the frames 10. This makes it possible to form a window or an opening 65 in the lining member 20 between the frames 10, for example. In particular, according to the above configuration, large working equipment can be directly carried in and out using a crane through the opening 65 in the ceiling surface.

Further, according to the above configuration, since the frame 10 includes the auxiliary frame 12, even when the pressure of the air column 11 is insufficient, it is possible to supplement this and ensure the rigidity of the frame 10. In other words, even if the air column 11 is partially damaged and air leaks out, the shape of the working tent 1 can be maintained due to the rigidity of the auxiliary frame 12. This reduces the possibility that the work tent 1 will collapse during the work, and allows the work to continue stably.

(Other embodiments)
Although the embodiment of the present disclosure has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes design changes within the scope of the gist of the present disclosure. . For example, each division of the work space 50 described above is an example, and the number and volume of the divisions are not limited to those described above. Further, in the above embodiment, an example in which the work tent 1 is used indoors has been described. However, it is also possible to use the working tent 1 outdoors. In this case, it is desirable to further provide a canopy to cover the work tent 1 to protect it from wind and rain.

<Additional notes>
The working tent 1 described in each embodiment can be understood, for example, as follows.

(1) A work tent 1 according to a first aspect is a work tent 1 for carrying in contaminated objects and carrying out work, and includes a frame 10 having an air column 11 that is inflated by air, It includes a lining member 20 that is detachably attached to the inside of the frame 10 and forms a working space 50 inside, and an exhaust part 40 that exhausts air in the working space 50 to the outside.

According to the above configuration, the work space 50 can be easily formed by simply inflating the air column 11, setting up the frame 10, and attaching the lining member 20 to the frame 10. Furthermore, since the lining member 20 is detachably attached to the frame 10, if the lining member 20 becomes contaminated, only the lining member 20 needs to be discarded, and the air column 11 can be reused. be able to. This makes it possible to reduce secondary waste.

(2) A working tent 1 according to a second aspect is the working tent 1 of (1), in which the working space 50 is divided into a plurality of mutually independent compartments, and the lining member 20 is Each section is set up independently.

According to the above configuration, since the work space 50 is divided into a plurality of sections, the plurality of sections can be used properly depending on the purpose of the work and the degree of contamination. Moreover, since the lining members 20 are independent for each compartment, only the lining members 20 of the contaminated compartments can be discarded, and the remaining lining members 20 of the uncontaminated compartments can be reused. This makes it possible to further reduce secondary waste.

(3) The working tent 1 according to the third aspect is the working tent 1 of (2), in which the plurality of compartments are connected to each other so as to be able to communicate with each other.

According to the above configuration, since the plurality of sections are in communication with each other, a worker can come and go between these sections.

(4) The working tent 1 according to the fourth aspect is the working tent 1 according to (3), in which the exhaust section 40 is installed in the compartment with the lowest degree of contamination among the plurality of compartments. An intake port 63 is formed to take in air from the outside, and an exhaust port 64 is formed in the section with the highest degree of pollution to exhaust air to the outside. It is discharged to the outside from the exhaust port 64.

According to the above configuration, an air flow is formed from the section with the lowest degree of contamination toward the section with the highest degree of contamination. This can reduce the possibility that contaminants will leak to the outside.

(5) The working tent 1 according to the fifth aspect is the working tent 1 according to any one of aspects (1) to (4), in which the exhaust section 40 is a filter that collects pollutants. It further has a section 41.

According to the above configuration, since the filter section 41 collects the pollutants, it is possible to reduce the possibility that the pollutants will be scattered to the outside.

(6) The working tent 1 according to the sixth aspect is the working tent 1 according to any one of (1) to (5), in which the air column 11 is a pair of air columns extending upward from the floor surface. The frame 10 has a column part 13 and a beam part 14 that connects the upper ends of the pair of column parts 13. They are arranged in multiple spaces.

According to the above configuration, since the frames 10 are arranged at intervals in the horizontal direction, the lining members 20 are exposed to the outside between the frames 10. This makes it possible to form a window or an opening 65 in the lining member 20 between the frames 10, for example.

(7) The working tent 1 according to the seventh aspect is the working tent 1 according to any one of the aspects (1) to (6), in which a space between the frames 10 of the lining member 20 is An opening 65 that can be opened and closed is formed in the ceiling surface of the area located at .

According to the above configuration, large working equipment can be carried in and out through the opening 65 in the ceiling surface.

(8) The working tent 1 according to the eighth aspect is the working tent 1 according to any one of the aspects (1) to (7), in which the frame 10 extends along the air column 11. In addition, it further includes an auxiliary frame 12 having higher rigidity than the air column 11.

According to the above configuration, since the frame 10 has the auxiliary frame 12, even when the pressure of the air column 11 is insufficient, it is possible to supplement this and ensure the rigidity of the frame 10.

1...Work tent 10...Frame 11...Air column 12...Auxiliary frame 13...Column section 14...Beam section 15...First member 16...Second member 20...Lining member 30...Air supply section 40...Exhaust section 41...Filter Section 50...Work space 51...Survey section 52...Undressing section 53...Work section 60...Entrance/exit 61...First door 62...Second door 63...Intake port 64...Exhaust port 65...Opening 70...Lighting device 81...First Ventilation hole 82...Second ventilation hole

Claims (8)

A work tent for carrying in contaminated objects for work,
a frame having an air column inflated by air;
a lining member that is removably attached to the inside of the frame and forms a work space inside;
an exhaust section that exhausts air in the work space to the outside;
A work tent equipped with The working tent according to claim 1, wherein the work space is divided into a plurality of mutually independent sections, and the lining member is provided independently for each section. The working tent according to claim 2, wherein the plurality of compartments are connected to each other so as to be able to communicate with each other. Of the plurality of sections, the section with the lowest degree of pollution is formed with an intake port that takes in air from the outside, and the section with the highest degree of pollution is formed with an exhaust port that discharges air to the outside. 4. The working tent according to claim 3, wherein a port is formed, and the exhaust section discharges air taken in from the intake port to the outside from the exhaust port. The working tent according to any one of claims 1 to 4, wherein the exhaust section further includes a filter section that collects pollutants. The air column is
a pair of pillars extending upward from the floor;
a beam portion connecting the upper ends of the pair of pillar portions;
has
The working tent according to claim 1, wherein a plurality of the frames are arranged at intervals in a horizontal direction perpendicular to the direction in which the beam portion extends. The working tent according to claim 1, wherein an opening that can be opened and closed is formed in a ceiling surface of a region of the lining member located between the frames. The working tent according to claim 1, wherein the frame further includes an auxiliary frame that extends along the air column and has higher rigidity than the air column.

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