JP5952604B2 - Evacuation facility - Google Patents

Description

  The present invention, when radioactive material is diffused outside the facility due to an accident at a facility that handles radiation, such as a nuclear power plant, the worker is not exposed to radiation for a time other than when the accident response worker wears protective clothing and engages in the work. The present invention relates to a evacuation facility installed in the field near a radiation source for protection from exposure.

Chernobyl and Three Mile Island are examples of major accidents at facilities that handle radiation, such as nuclear power plants. To protect workers who deal with accidents from radiation exposure, wearing protective clothing and radiometers Although there are references to countermeasures at the time of work such as mobile phone, there is no mention of a facility for protecting workers exposed outside of work hours.
In addition, as a method of escaping from radiation exposure, it is desirable to shorten the work time, leave the radiation source, evacuate to a place away from the window of a concrete or stone building. In order to allow workers who have completed work to take a break and wait at a place away from radiation sources where exposure is avoided, transportation must be secured, and buses used as work clothes and transportation There is also a risk that radioactive materials adhering to etc. will be carried away from the source to cause pollution. Therefore, it is desirable to prepare a prefabricated evacuation facility near the radiation source that protects workers from radiation exposure and is not permanent, and can be assembled urgently in the event of an accident. However, no invention relating to such a facility has been found so far.

  The present invention has been made in view of the above-described background art, and an object of the present invention is to provide a prefabricated retreat facility that can be installed outdoors in the vicinity of a radiation generation source to protect an operator from radiation exposure.

The present inventors have solved the above problems by the following means.
(1) A chamber space formed by a plurality of cylindrical units each having a specific gravity of 2.6 to 4.0 and made of heavy concrete walls and having an inlay on the front and rear surfaces . A evacuation facility characterized in that a plurality of chambers are connected horizontally through a bulkhead made of zero heavy concrete and formed with inlays on the front and rear surfaces, and a communication space is provided in the bulkhead separating each chamber space .

(2) The cylindrical unit is of a precast type that can be carried and moved on-board. One unit has a weight of 2 to 30 tons, an internal volume of 4 to 30 m ³ , and a wall thickness of 100. The evacuation facility as described in (1) above, which is ˜300 mm.

  (3) The cylindrical unit chamber is of a precast type that can be transported and moved in a vehicle. One unit has a weight of 2 to 30 tons, a wall thickness of 100 to 300 mm, and an external size. The height is 2.0 to 3.2 m, the width is 1.2 to 4.5 m, and the depth is 1.0 to 4.0 m. The retreat facility according to (1) or (2) above,

(4) The cylindrical unit has a weight of 15 to 55 tons, an internal volume of 12 to 40 m ³ , an outer size of 2.6 to 6.0 m, a width of 4.6 to 8.7 m, and a depth of 1.0 to 1. 2. The evacuation facility according to item 1, wherein the evacuation facility is a large 5 m precast type, and is divided into two parts so as to be transported and moved in a vehicle.

  (5) A room space composed of a plurality of cylindrical units is composed of a decontamination room, a dressing room, a rest room, and a clothing room, and each room secures the required indoor volume by the number of connected cylindrical units. The above-mentioned item is characterized in that the cylindrical units constituting each room are equipped in advance with the minimum necessary facilities such as lighting, air conditioning, faucets, toilets, or fixtures for mounting these facilities. The evacuation facility according to any one of 1 to 4.

(6) Installed in the field near the radiation source, and protects workers from radiation exposure. A plurality of the evacuation facilities according to any one of claims 1 to 5 provide a distance interval away from the radiation source. A evacuation facility characterized by being connected to each other by a tunnel passage having a high radiation shielding property, which is installed at the front and back, and is capable of traveling between a plurality of evacuation facilities.

  (7) The heavy concrete used for the wall and partition member of the cylindrical unit is one or more selected from iron oxide-based iron ore, barite (barite), high specific gravity slag, basalt, The evacuation facility according to any one of the preceding items 1 to 6, wherein the evacuation facility is manufactured by being adopted as an aggregate.

The following effects are exhibited by the evacuation facility of the present invention.
<1> A heavy concrete having a specific gravity of 2.6 to 4.0, in which a retreat facility is formed by a plurality of cylindrical units composed of heavy concrete wall bodies having a specific gravity of 2.6 to 4.0. A plurality of cylindrical units are connected to each other through a partition member made of a product, and a chamber space formed by a plurality of cylindrical units is formed as a decontamination chamber, a dressing room, a rest room, and a clothing room, respectively. Since the partition member separating the spaces is provided with a communication space in which the worker can move, a space where the worker can change clothes and take a rest without worrying about radiation exposure can be provided.
In addition, since work clothes exposed by work are decontaminated in the decontamination room and undressed in the dressing room, work clothes that are highly contaminated with radiation are stored in a contaminant storage container in the dressing room after decontamination. When leaving the evacuation facility, new work clothes will be worn in the clothing room, so that workers wearing highly contaminated work clothes will not move as they are and will be exposed to radiation contamination to places with low radiation doses. Expansion is prevented.

  <2> The cylindrical unit is a precast type that can be transported and moved in a vehicle. One unit has a weight of 2 to 30 tons and a wall thickness of 100 to 300 mm. It can be easily transported and moved close to the source and assembled to enable early radiation control work.

  <3> The cylindrical unit is of a precast type that can be transported and moved in a vehicle. One unit has a weight of 2 to 30 tons, a wall thickness of 100 to 300 mm, and an external size. However, the height is 2.0 to 3.2 m, the width is 1.2 to 4.5 m, and the depth is 1.0 to 4.0 m. As a result, it is possible to secure a rest space at an early stage to protect workers from

<4> The cylindrical unit has a weight of 15 to 55 tons, an internal volume of 12 to 40 m ³ , an outer size of 2.6 to 6.0 m, a width of 4.6 to 8.7 m, and a depth of 1.0 to 1. .5m large pre-cast type, which is divided into two parts vertically so that it can be transported and moved on-board, so it can be easily transported and moved near the radiation source to widen the indoor space The facility can be assembled, radiation countermeasure work can be started at an early stage, and a better environment can be provided by the worker.

  <5> Each room of the decontamination room, dressing room, rest room, and dressing room can secure the required indoor volume by the number of connected cylindrical units. , Water faucets, toilets, etc. The minimum necessary equipment or fixtures for mounting these equipments are pre-installed, so the necessary equipment or the necessary number of cylindrical units equipped with these equipment fixtures Connected to form each room space, and after forming the outer shape of the evacuation facility by laying each configured room space through a partition member, the equipment installed in advance by wiring and piping in the facility, or It is possible to make early use of the equipment installed on the fixtures equipped in advance, and it is possible to suppress the expansion of radiation damage by early acceptance of workers.

<6> A plurality of evacuation facilities are installed at a distance from each other so as to move away from the radiation source, and a tunnel-like passage having a high radiation shielding property is provided so that the plurality of evacuation facilities can go back and forth between each other. Therefore, workers who have finished their work can move to the evacuation facility where the radiation dose is low without going out to the field, and if they have a cot in advance in any of the break rooms of multiple evacuation facilities It is also possible to take a nap until the change time.
In addition, when leaving the evacuation facility after completing the predetermined work schedule, wear new protective clothing in the clothing room of the evacuation facility farther away from the radiation source, go out of the exit, and worry about radiation exposure by means of transportation such as buses. Because it is possible to move to a place where there is no radiation, the worker can be exposed to a very small amount of radiation, and radiation contamination spread can be reliably prevented in the moved place.

The perspective view (partial cross section display) which shows the composition of the retreat facility of the present invention The perspective view of the partition member (a) and cylindrical unit (b) which comprise the evacuation facility of this invention Perspective view of cylindrical unit divided vertically FIG. 1 is a conceptual diagram of a connected evacuation facility in which a plurality of evacuation facilities shown in FIG. Other structural concept diagrams of evacuation facilities constructed by connecting cylindrical units

The form for implementing the evacuation facility of this invention is demonstrated based on the figure of an Example.
FIG. 1 is a perspective view (partially sectional view) showing the configuration of the evacuation facility of the present invention, FIG. 2 is a perspective view of the partition wall member (a) and the cylindrical unit (b) constituting the evacuation facility of the present invention, FIG. 1 is a conceptual diagram of the structure of a retreat facility in which a plurality of retreat facilities shown in FIG. 1 are connected by a tunnel-shaped passage, and FIG. 4 is a structure of a connection retreat facility in which a plurality of retreat facilities shown in FIG. FIG. 5 is a conceptual diagram, and FIG. 5 is another conceptual diagram of a retreat facility constructed by connecting cylindrical units.
In the figure, 1 is a retreat facility, 1 'is a connection retreat facility, 2 is a decontamination chamber, 3 is a dressing room, 4 is a rest room, 5 is a dressing room, 6 is a passage connection chamber, 7 is a communication passage, and 10 is a cylindrical shape. The unit 10 ′ is a cylindrical unit having a communication space on the side wall, 10a is a through hole, 11 is a partition member, 11a is a through hole, 11b is a communication space, 20 is a solar power generation device, and 21 is a lighting facility. , 22 is an air conditioner, 23 is a power receiving terminal, 24 is a faucet part, 25 is a toilet, and 26 is a urine tank.

As shown in FIG. 1, the evacuation facility 1 of the present invention includes a decontamination chamber 2 formed by a plurality of cylindrical units 10 composed of heavy concrete wall bodies having a specific gravity of 2.6 to 4.0, undressing The room space such as the room 3, the break room 4, the clothes room 5 and the like are connected to the partition wall member 11 that is connected via the partition wall member 11 made of heavy concrete having a specific gravity of 2.6 to 4.0 and separates the rooms. The communication space 11b is provided so that an operator can freely move between the rooms.
Each tubular unit 10 is equipped in advance with various facilities such as a lighting facility 21, an air conditioning facility 22, a water supply facility, a toilet 25, etc. necessary for a space completely blocked from the outside, or a fixture for installing these facilities. When the cylindrical units 10 are connected, they can be easily connected by wiring and piping work in the cylindrical unit 10.
It is also preferable to include a power receiving terminal 23 that receives power supply from the outside, a water tap 24 that receives water supply, and a solar power generation device 20 that provides power required in the facility. A cylindrical unit 10 provided with a plug 24 and a cylindrical unit 10 provided with an attachment base of a photovoltaic power generator on the outer surface of the upper wall are also prepared.
As shown in FIG. 1, a partition member 11 is provided at the entrance of the retreat facility 1 formed by connecting these chambers, and a door (not shown) having a high radiation shielding property is provided in the communication space 11 b of the partition member 11. ) Is provided.

A perspective view of the partition wall member 11 and the cylindrical unit 10 forming each chamber space is shown in FIG.
As the cylindrical unit 10 shown in FIG. 2 (b), the aggregate is made of heavy concrete having a specific gravity of 2.6 to 4.0 made of high iron-containing aggregate, and one mass is carried and moved on the vehicle. 2-30 tons possible. As the external dimensions, those having a height (H) of 2.0 to 2.7 m, a width of 1.2 to 4.5 m, a depth of 1.0 to 4.0 m and a wall thickness of 100 to 300 mm are used.
Moreover, as the partition member 11 used as the entrance / exit of the evacuation facility 1 and the partition between each room | chamber shown to Fig.2 (a), the external shape is the same as the height width of the said cylindrical unit 10, and thickness is 100-300 mm. Things are used.
As shown in FIG. 2, a plurality of cylindrical units 10 and a plurality of partition members 11 constituting the retreat facility 1 are connected to and integrated with the wall body and the partition member 11 of the cylindrical unit 10. Through holes 10a and 11a through which the PC steel material is inserted are drilled.
In addition, inlays as guides at the time of connection between the cylindrical units 10 and the partition wall member 11 are connected to each other between the cylindrical units 10 and between the cylindrical unit 10 and the partition wall member 11 so as to improve the radiation shielding performance. It is also preferable that the partition wall member 11 is provided with a protrusion that can be fitted into the opening surface of the cylindrical unit 10.

As a cylindrical unit, the weight is 15 to 55 tons as shown in FIG. 3, the inner volume is 12 to 40 m ³ , the outer size is 2.6 to 6.0 m, the width is 4.6 to 8.7 m, the depth is 1. It is also preferable to use a large precast type of 0 to 1.5 m that is divided into two parts in the vertical direction so that it can be transported and moved in a vehicle because a large indoor space can be secured.
In addition, as shown in FIG. 3, the upper and lower unit joint surfaces 15a and 15a are preferably formed in a step structure so as to be fitted to each other so as to enhance the radiation shielding effect.

Construction and installation of the evacuation facility according to the present invention is performed according to the following procedure.
a. Setting of the number of workers based on the work scale and the number of cylindrical units 10 that can calculate and secure the required volume of each room space, especially the break room, and the number of workers, and the equipment necessary for each room The arrangement of the cylindrical unit 10 and the partition wall member 11 having the attachments is determined (design stage).
In addition, since the width W of the cylindrical unit 10 is limited, the behavior in the room is restricted when the number of workers who evacuate and take a rest increases. It is preferable to provide a plurality of buildings.
In addition, it is preferable to prepare a evacuation facility with a standard configuration in advance so that it can cope with an emergency, but in this case, it is desirable to determine the accommodation capacity.
b. A cylindrical unit 10 having a necessary number of necessary functions and a necessary number of partition members 11 are transported to the site based on the scale obtained by the design, and the cylindrical unit 10 having the respective functions based on the design. The partition member 11 is connected and disposed. At this time, it is preferable that the tubular units 10 and the tubular unit 10 and the partition member 11 are accurately connected to each other by the spigots formed on the front and rear surfaces of the tubular unit 10 and the partition member 11. The PC steel material is inserted into the four corners of the reinforcing portions and the through holes 10a and 11a formed in the four corners of the partition wall member 11, and the PC steel material is tensioned to form a gap between the cylindrical unit 10 and the partition wall member 11. Connect together to increase radiation shielding ability (construction stage).
c. Wiring, piping, lighting equipment 21 and air conditioning equipment 22 in the evacuation facility 1 whose outer shape is completed, interior work such as installation of the floor surface as necessary, installation of the solar power generation apparatus 20, external power supply Installation of necessary equipment, tools, and furnishings necessary for evacuation workers in a sealed space such as connection to the power receiving terminal 23, attachment of a water pipe to a faucet, installation of a urine tank 26 in the toilet 25, and start of use (Interior maintenance stage).

In this embodiment, a plurality (three in FIG. 4) of the evacuation facilities 1 shown in FIG. 1 are installed at the front and back with a distance interval away from the radiation source, and the plurality of evacuation facilities 1 are mutually connected. This is a connected and retracted facility 1 ′ provided with a tunnel-shaped communication passage 7 having a high radiation shielding property formed by a plurality of the cylindrical units 10 so as to be able to come and go.
Considering that a large number of workers are input in an emergency, it is preferable to construct and cope with a plurality of evacuation facilities 1 having a standard configuration as shown in FIG. Rather than providing them in isolation, by connecting them to each other and enabling reciprocal interaction between workers entering each evacuation facility 1, it not only helps relieve tension from working in harsh environments, but also finishes the work If the worker can move to the evacuation facility 1 with low radiation dose sequentially without going outside, and the rest room of one evacuation facility 1 is a nap room, it is possible to take a nap until the next shift time. preferable.
Furthermore, when leaving the evacuation facility 1 after finishing the predetermined work schedule, wear new protective clothing in the clothing room 6 of the evacuation facility 1 farther from the radiation generation source, go out from the exit, and radiate by means of transportation such as a bus. Since it is possible to move to a place where there is no worry about exposure, the worker only needs to be exposed to a very small amount of radiation, and the effect of reliably preventing the diffusion of radiation contamination in the moved place can be obtained.
In order to construct this connected evacuation facility 1 ′, a cylindrical unit 10 ′ having a communication space on one or both of the left and right side walls [FIG. 2 (c) shows a cylindrical unit having a communication space on both sides. Is provided, and a passage communication chamber 6 comprising a cylindrical unit 10 ′ having the connection space is provided at a connection point between the retreat facility 1 and the communication passage.

The shape of connecting and installing a plurality of evacuation facilities may vary depending on the topographical situation of the installation location. An example of this is shown in FIG. 5, but in this example, it is possible to use two entrances and a T-shaped break room or a nap room in the center.
In addition, the corner portion where the retreat facility is orthogonal can be configured by joining cylindrical units 17 having a trapezoidal cross section.
Since the evacuation facility of the present invention is constructed by a combination of cylindrical units, it has the advantage that its scale and shape can be changed based on its use and terrain conditions.

1: Retreat facility 1 ': Linked retreat facility 2: Decontamination room 3: Dressing room 4: Rest room 5: Dressing room 6: Passage connection room 7: Communication passage 10: Cylindrical unit 10': A side wall has a communication space Cylindrical unit 10a: insertion hole 11: partition wall member 11a: insertion hole 11b: communication space 15, 16: vertically divided cylindrical units 15a, 16a: joint surfaces of upper and lower divided units 17: trapezoidal cross section Unit 20: Solar power generation device 21: Lighting equipment 22: Air conditioning equipment 23: Power receiving terminal 24: Water faucet 25: Toilet 26: Urine tank

Claims (7)

A chamber space formed by a plurality of cylindrical units having a specific gravity of 2.6 to 4.0 and made of a concrete wall made of concrete with inlays on the front and rear surfaces, and having a specific gravity of 2.6 to 4.0 A retreat facility comprising a plurality of chambers connected horizontally through a partition member made of concrete and having inlays formed on the front and rear surfaces, and a communication space provided in a partition wall separating each chamber space. The cylindrical unit is a pre-cast type that can be transported and moved on-board. One cylindrical unit has a weight of 2 to 30 tons, an internal volume of 4 to 30 m ³ , and a wall thickness of 100. The retreat facility according to claim 1, wherein the retreat facility is ˜300 mm.   The cylindrical unit is of a precast type that can be transported and moved in a vehicle. One unit has a weight of 2 to 30 tons, a wall thickness of 100 to 300 mm, and an external size is high. The retreat facility according to claim 1, wherein the retreat facility is 2.0 to 3.2 m, width is 1.2 to 4.5 m, and depth is 1.0 to 4.0 m. The cylindrical unit has a weight of 15 to 55 tons, an internal volume of 12 to 40 m ³ , an external size of 2.6 to 6.0 m in height, 4.6 to 8.7 m in width, and 1.0 to 1.5 m in depth. 2. The evacuation facility according to claim 1, wherein the evacuation facility is a large precast type, and is divided into two parts in the vertical direction so that it can be carried and moved by being mounted on a vehicle.   A room space composed of a plurality of cylindrical units consists of a decontamination chamber, a dressing room, a rest room, and a clothing room, and each room has a required indoor volume secured by the number of connected cylindrical units, The cylindrical unit constituting each room is preliminarily equipped with necessary facilities such as lighting, air conditioning, water faucet, toilet, etc., or fixtures for mounting these facilities. 5. The evacuation facility according to any one of 4 above. A plurality of evacuation facilities according to any one of claims 1 to 5, which are installed in the field near a radiation source and protect workers from radiation exposure, are provided with a distance interval away from the radiation source. installed, and a plurality of evacuation facility between mutually retracted facility characterized by comprising coupled with high tunnel-like passage of radiation shielding properties that can traffic to. The heavy concrete used for the wall and partition member of the cylindrical unit is one or two or more selected from iron oxide iron ore, barite (barite), high specific gravity slag, basalt as aggregate The evacuation facility according to any one of claims 1 to 6, wherein the evacuation facility is manufactured by adoption.

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