JP7155365B1 - Dismantling and removal method of PCB processing facility - Google Patents

Abstract

To provide a method for dismantling and removing a PCB processing facility that can secure a carry-out route by dismantling sequentially from a carry-out port even in a narrow site. A building (10) of the PCB processing facility (1) is dismantled and removed when dismantling and removing all objects to be demolished including equipment, devices, pipes, wiring or buildings existing in the PCB processing facility (1). In the non-contaminated area (2) near the exit (4) inside, dismantle and remove the object to be dismantled, form a temporary storage space (6) for temporarily placing the object to be dismantled, and create a temporary storage space (6) 1. A method for dismantling and removing a PCB treatment facility (1), characterized in that the objects to be dismantled that have been classified as contaminants out of the objects to be dismantled are carried out and kept on standby for a predetermined period of time. [Selection drawing] Fig. 2

Description

TECHNICAL FIELD The present invention relates to a method for dismantling and removing a PCB processing facility, and more particularly, to a dismantling and removing method for a PCB processing facility that dismantles and removes contaminants installed on the far side in order from the side closest to the outlet.

In the dismantling and removal work of PCB processing facilities, a closed dismantling and removal method using temporary tents or existing buildings is required so as not to pollute the surrounding environment.

In the technique of Patent Document 1, the area is divided into an area that is unnecessary for maintaining the PCB decontamination function and has the possibility of PCB contamination, an area that is necessary for the PCB decontamination function, and an area that is necessary for dismantling and removal work. On the other hand, a dismantling removal method is disclosed in which areas are allocated on a room-by-room basis, a corresponding relationship is established between areas and rooms, and dismantling is performed in descending order of the degree of contamination of the divided areas.

Patent No. 6031406

However, in the construction method of Patent Document 1, areas and rooms are associated with each other. Even if there is, it is unavoidable to subdivide it in the building or to carry it out in a narrow place like polluted matter.

Moreover, in Patent Document 1, dismantling on a room-by-room basis results in the dismantling of non-contaminated materials in the room at the same time, which imposes restrictions on a narrow carrying-out route and procedure, which is inefficient.

Furthermore, in Patent Document 1, the pollutants are to be treated in the high-concentration treatment facility that is to be dismantled. , it is more economical to treat at a detoxification facility.

Non-contaminated materials can also be disposed of as general industrial waste or recycled products, but since this is done on a room-by-room basis, it is uneconomical to dispose of it in a detoxifying facility with a high unit cost.

Furthermore, when dismantling while maintaining the decontamination function in the current high-concentration treatment facility, there are restrictions on the dismantling procedure and the carrying-out route, so efficient dismantling and removal is not possible.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a dismantling and removing method for a PCB treatment facility that can secure a carrying-out route by dismantling in order from the carrying-out port even if the site is narrow.
Furthermore, other objects of the present invention will become clear from the following description.

The above problems are solved by the following inventions.

(Claim 1)
When dismantling and removing all objects to be dismantled including equipment, devices, pipes, wiring or buildings existing in the PCB processing facility (1),
A temporary storage space (6) is provided in a non-contaminated area (2) in the vicinity of the carry-out exit in the building (10) of the PCB processing facility (1) by dismantling and removing the object to be dismantled and temporarily placing the object to be dismantled. form,
out of the objects to be dismantled, the objects to be dismantled classified as contaminants are carried out to the temporary storage space (6) and kept on standby for a predetermined period of time ;
The temporary storage space (6) includes a partial area (6a) of the non-contaminated area (2) and an area (6b) reduced to a non-contaminated level by decontamination treatment,
A method for dismantling and removing a PCB processing facility, characterized by:
(Claim 2)
Among the objects to be demolished, the objects to be demolished classified as non-contaminated objects are removed from the objects to be demolished after the non-contaminated objects that hinder the carrying out of the contaminated objects are moved to a position away from the passage leading to the outlet. Carrying out the objects to be dismantled classified as contaminants to the temporary storage space (6);
The method for dismantling and removing a PCB processing facility according to claim 1 , characterized in that:
(Claim 3)
Of the objects to be dismantled classified as non-contaminated objects, the non-contaminated objects that do not interfere with the passage leading to the discharge port for the contaminated objects are left, and the objects to be dismantled are placed in the temporary storage space (6). Out of which, the object to be dismantled classified as the contaminant is carried out,
The method for dismantling and removing a PCB processing facility according to claim 1 or 2 , characterized in that:
(Claim 4)
A wrapping room (62) provided with a temporary door that does not open at the same time is provided in a part of the temporary storage space (6).
The method for dismantling and removing a PCB processing facility according to claim 1 , characterized in that:
(Claim 5)
The lapping chamber (62) is provided in an area (6b) reduced to a non-contaminated level by the decontamination treatment,
The method for dismantling and removing a PCB processing facility according to claim 4 , characterized in that:
(Claim 6)
A lapping machine is provided in the lapping chamber (62), and the lapping machine wraps the objects to be dismantled classified as the contaminants.
The method for dismantling and removing a PCB treatment facility according to claim 4 or 5 , characterized in that:
(Claim 7)
A roof tent (8) that covers the entire PCB processing facility (1) is not installed, and the existing ventilation and exhaust equipment (9) is used to create a negative pressure in the highly contaminated area (3). Forming a room pressure difference with other areas to dismantle and remove the objects to be dismantled classified as contaminants;
The method for dismantling and removing a PCB processing facility according to any one of claims 1 to 6 , characterized in that:
(Claim 8)
The existing ventilation/exhaust equipment (9) is used without installing a shed tent (8) that covers the entire PCB processing facility (1), and the wrapping room (62) is made negative pressure, and the wrapping room (62) is forming a room pressure difference with an area other than the above, and wrapping the demolition object classified as the contaminant;
The method for dismantling and removing a PCB processing facility according to claim 4, 5 or 6 , characterized in that:

According to the present invention, it is possible to provide a method for dismantling and removing a PCB treatment facility that can secure a carry-out route by dismantling in order from the outlet even if the site is narrow.

Schematic plan view showing an example of a method for dismantling and removing a PCB processing facility according to the present invention. Schematic plan view showing an example of a method for dismantling and removing a PCB processing facility according to the present invention. Schematic plan view showing another example of the method for dismantling and removing a PCB processing facility according to the present invention. Schematic plan view showing an example of a method for dismantling and removing a PCB processing facility according to the present invention. Schematic plan view showing an example of a method for dismantling and removing a PCB processing facility according to the present invention. Schematic plan view showing an example of a method for dismantling and removing a PCB processing facility according to the present invention. Schematic plan view showing an example of a method for dismantling and removing a PCB processing facility according to the present invention. A diagram showing another preferred embodiment of the method for dismantling and removing a PCB processing facility according to the present invention. A diagram showing another preferred embodiment of the method for dismantling and removing a PCB processing facility according to the present invention. Schematic plan view showing a conventional example A diagram showing still another preferred embodiment of the method for dismantling and removing a PCB processing facility according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, when the embodiment of the present invention is carried out, high-concentration PCBs are removed in advance by washing or the like, and all objects to be dismantled are contaminants classified as low-concentration, It is assumed to be in a non-contaminated state. Contaminants classified as low concentration (low concentration contaminants) will be described later.

Therefore, among the objects to be dismantled, including equipment, devices, pipes, wiring, or buildings, which are present in PCB processing facilities, there is a mixture of objects to be dismantled that are classified as non-contaminated substances and objects that are classified as contaminated substances. When dismantling and removing these, it is more efficient to dismantle and remove the above-mentioned objects to be dismantled that are installed on the far side in order from the one closest to the exit while securing the space to carry them out. work can proceed.

In the present invention, the objects to be dismantled near the exit are removed, and a large space is created near the exit. can be done. In addition, since a large temporary storage space is formed, this space can be effectively used as a wrapping or sheet curing area necessary for transporting contaminants.

In this embodiment, before the dismantling and removal work, the degree of contamination of objects to be dismantled, including equipment, devices, pipes, wiring, or buildings existing in the PCB treatment facility, is analyzed in advance, and , and non-contaminated items, a more rapid and stable method of dismantling and removal can be realized. Here, the premise of the method of classifying objects to be dismantled into pollutants and non-contaminants is that each object to be dismantled is defined by the Ministry of the Environment as a low-concentration contaminant "low-concentration PCB eligibility criteria". In principle, analysis should be performed using the analysis method described above.

A method for dismantling and removing a PCB processing facility according to the present invention proposes how to dismantle and remove objects to be dismantled classified as contaminants.

The method for dismantling and removing a PCB processing facility according to the present invention dismantles and removes contaminants installed in order from the side closest to the outlet while securing the space for carrying out regardless of the area divided into the PCB management area. It is characterized by going.

Here, "regardless of the area divided into PCB controlled areas" means that the entire facility is divided into non-controlled areas and controlled areas. It was divided into level 1 area, level 2 area and level 3 area in descending order of the PCB concentration handled, and the order of level 1 area, level 2 area and level 3 area was divided according to the difference in the degree of contamination of PCB concentration. It means that it is not constrained by
In other words, in the present invention, without being constrained in the order of level 1 area, level 2 area, and level 3 area classified by the difference in degree of contamination, while securing a space for carrying out, the area nearer to the carry-out port is moved to the far side in order. Contaminants that have been installed will be dismantled and removed.

1 to 7 are schematic plan views showing an example of the method for dismantling and removing a PCB processing facility according to the present invention.

In FIG. 1, 1 is a PCB processing facility. A PCB processing facility 1 is divided into a non-contaminated area 2 and a contaminated area 3 inside the non-contaminated area 2 .

Contaminated area 3 of this embodiment shows a case where the contamination level increases in the order of L1<L2<L3.

As shown, a level 1 area L1 is arranged on the outermost side, a level 2 area L2 is arranged on the inner side, and a level 3 area L3 is arranged on the innermost side. In the figure, 4 is an outlet for dismantling and carrying out the contaminants. In this embodiment, the outlet 4 is located on the right side of the building 10 of the PCB processing facility 1 in the drawing.

Explanation based on Fig. 2 on the first stage when dismantling and removing contaminated objects installed in the back side in order from the side closest to the exit while securing the space to carry out without being constrained by the order of the level area. do.

The first step is to form a temporary storage space 6 by dismantling and removing objects to be dismantled existing in a partial area 6a of the non-contaminated area 2 near the carry-out exit 4 in the building 10 of the PCB processing facility 1. is. Since the partial area 6a of the non-contaminated area 2 is originally a non-contaminated area, there is no need for decontamination. Creates a large space. This wide space functions as a temporary storage space 6. - 特許庁By forming this temporary storage space 6 , a work space is formed in the building 10 in the vicinity of the carry-out port 4 , which is efficient for carry-out.

Since this temporary storage space 6 is formed within the building 10, the objects to be dismantled classified as contaminants are not exposed to rainwater or the like, and there is no concern about pollution to the environment. In addition, it can also function as a temporary storage space for adjusting the carry-out of objects to be demolished. Furthermore, for dispensing purposes, it can also function as a waiting space during the period required for analysis of the degree of PCB contamination. By carrying out these operations near the carry-out port 4, the work efficiency can be significantly improved.

Further, as shown in FIG. 3, in the temporary storage space 6, in addition to a partial area 6a of the non-contaminated area 2, an area near the exit 4 of the level 1 area L1 of the contaminated area is decontaminated. It is also preferred to include an area 6b that has been reduced to a level of contamination. As a result, a larger working space can be secured in the vicinity of the carry-out port 4 .

Next, the second stage of dismantling and removal will be described with reference to FIG.
As shown in FIG. 4, the top side of the level 1 area L1, the bottom side of the level 1 area L1, and the right side of the level 2 area L2 of the contaminated area 3 are the dismantling section 61 corresponding to the part reaching the right end of the level 3 area L3. be dismantled and removed.

The object to be dismantled existing in the dismantling section 61 to be dismantled and removed is dismantled and transported to the temporary storage space 6 . At this time, if the objects to be dismantled classified as non-contaminant interfere with the transportation of the objects to be dismantled classified as contaminated, the passage leading to the exit for the objects to be dismantled classified as contaminated It is preferable to move it so as to avoid it, and to leave it if it does not get in the way.

Next, the third stage of dismantling and removal will be described with reference to FIG.
As shown in FIG. 5, the dismantled section 61 corresponding to the top side of the area L1, the bottom side of the level 1 area L1, the top side of the area L2, the bottom side of the area L2, and the level 3 area L3 of the contaminated area 3 is provided. Dismantle and remove.

Most of the objects to be dismantled existing in the dismantling section 61 to be dismantled and removed are objects to be dismantled that are classified as contaminants.

Next, the fourth stage of dismantling and removal will be described with reference to FIG.
As shown in FIG. 6, the dismantled parts 61 corresponding to the upper part of the level 1 area L1, the lower part of the level 1 area L1, and the left part of the level 2 area L2 of the contaminated area 3 are dismantled and removed.

Next, the fifth stage of dismantling and removal will be described with reference to FIG.
As shown in FIG. 7, the dismantled section 61 corresponding to the left side of the level 1 area L1 of the contaminated area 3 is dismantled and removed.

In this level 1 area L1, objects to be dismantled that are classified as pollutants and objects to be dismantled that are classified as non-contaminants are mixed in some cases. For this reason, if objects to be dismantled classified as non-contaminated materials interfere with the transportation of objects to be dismantled classified as contaminated materials, avoid the passage toward the carry-out port 4 for conveying contaminated materials. You can move it around and leave it if it doesn't get in the way.

As described above, according to the present invention, the temporary storage space 6 is first secured in the building 10, and then dismantled and removed sequentially from the side closer to the carry-out port 4 as shown in FIGS. As a result, it is possible to proceed with the work more efficiently by dismantling and removing the objects to be dismantled placed on the far side in order from the one closest to the outlet while securing the space for carrying them out.

In the above description, an example of dismantling and removing each stage of FIGS. 4 to 7 was described, but the present invention is not limited to this. In this embodiment, it is only necessary to dismantle and remove the object to be dismantled in the building from the side closer to the outlet 4. For example, the dismantling section 61 in FIGS. 6 and 4 to 7 may be performed simultaneously.

In addition, in this embodiment, in principle, walls that serve as boundaries between the level 1 area L1, the level 2 area L2, and the level 3 area L3 of the contaminated area 3 shown in FIGS. 4 to 7 are left. However, it may be removed if desired. At this time, if a chamber pressure difference is provided in each contaminated area 3, which will be described later, it is preferable to remove the contaminated walls so as not to hinder the control of the chamber pressure difference.

Another preferred embodiment of the present invention will now be described with reference to FIGS. 8 and 9. FIG.
Low-concentration PCB contaminants must be prevented from leaking by removing the wrapping of closed containers, wrapping, covering sheets, etc., in accordance with transportation guidelines. For this reason, in order to carry out contaminated materials to the outside, it is necessary to form an airtight space with a door on the loading/unloading side of the building to prevent leakage.
As a wrapping method, for example, a wrapping machine for wrapping can be used to wrap a sealed container or directly wrap a contaminant.

Even if it is a contaminant, by wrapping and covering it with a sheet, there is no need to worry about PCB leakage or contamination. As a result, temporary placement in the formed temporary placement space 6 becomes possible, and contamination of the temporary placement space 6 can be prevented.

In the present invention, for example, the right side of the area L1 of the contaminated area 3 is preferably provided as a wrapping room 62, in which wrapping, wrapping, sheet curing, etc. of the closed container are preferably performed. The area L1 of the contaminated area 3 is located at the boundary with the non-contaminated area 2, and is provided with a door that can ensure airtightness. Since a secure door is provided, the right portion of the area L1 is preferable as a place for the wrapping chamber 62 to be provided.

When enclosing the contaminants in a closed container in the wrapping chamber 62, the closed container is transported to the contaminated area 3, and in the contaminated area 3, the contaminants are enclosed in the closed container, and the closed container in which the contaminants are enclosed is produced. is transported to the wrapping chamber 62 .

In this case, first, an empty airtight container is wrapped in the wrapping chamber 62, the wrapped empty airtight container is transported to the contaminated area 3, and the contaminants are enclosed in the airtight container within the contaminated area 3. By conveying the sealed container containing the contaminants to the wrapping chamber 62 and removing the wrapping of the sealed container, the sealed container is not exposed to the contaminants. As a result, the closed container can be taken out of the wrapping chamber 62 and temporarily placed in the temporary storage space 6 if necessary. Since contaminants are often stored in closed containers near the dismantling site, the above-described arrangement can prevent the closed containers brought in from the outside from being contaminated in the contaminated area.

FIG. 8 is a diagram showing a stage of dismantling and removing the dismantling section 61 shown in FIG. 4 in the case where the wrapping chamber 62 having the loading door 620 and the unloading door 621 is provided, and FIG. 9 is a diagram shown in FIG. It is a figure which shows the stage which dismantles and removes a dismantling part.

The carry-in door 620 of the wrapping chamber 62 is the border door between the level 2 area L2 and the level 1 area L1, and the carry-out door 621 is the border door between the contaminated area 3 area L1 and the non-contaminated area 2. These doors must be able to ensure airtightness, and unless one door is closed, the other door will always be closed and will not open. is preferred. This is to prevent the spread of contamination.

In this embodiment, the loading door 620 and the loading door 621 serving as the entrance to the wrapping room 62 may be existing doors, and a part of the temporary storage space 6 with the existing doors may be used as the wrapping room 62. Alternatively, the loading door 620 and the loading door 621 may be formed as temporary doors to provide the wrapping chamber 62 .

In addition, from the viewpoint of preventing the spread of contamination, using the existing ventilation equipment described later, the room pressure difference is formed in the order of the contaminated area 3, the wrapping room 62, and the temporary storage space 6 other than the wrapping room 62, and the contaminated area 3 is the most Negative pressure is preferred. Furthermore, by providing a wrapping room equipped with a carry-in door and a carry-out door and using existing ventilation equipment to be described later, it is possible to more reliably prevent the spread of contamination.

As a result, the outflow of air to the outside can be prevented, so the spread of contamination from the contaminated area 3 to the wrapping chamber 62 can be prevented. Contamination expansion to the temporary storage space 6 other than the chamber 62 can be prevented.

Of the objects to be dismantled in the dismantling section 61 shown in FIG. 8, the objects to be dismantled that have been classified as contaminants are transported to the wrapping chamber 62, and the expansion of contamination is prevented by removing the wrapping of the sealed container, wrapping, sheet curing, etc. is processed to In FIG. 8, if the objects to be dismantled classified as non-contaminant interfere with the transportation of the objects to be dismantled classified as contaminated, the path toward the exit for the objects to be dismantled classified as contaminated is It is preferable to move it so as to avoid it and leave it if it does not get in the way.

Specifically, as shown in FIG. 9, for example, when an object to be dismantled 610 classified as contaminants is transported from the carry-in door 620 to the wrapping chamber 62, in the stage of FIG. If the uncontaminated dismantling objects 63 are left on the path leading to the outlet, the dismantling objects 610 classified as contaminants may be hindered from being transported. .

In this case, before transporting the demolition object 610 classified as contaminants, the demolition object classified as non-contaminant that interferes with the transportation of the demolition object 610 preliminarily classified as contaminant to the wrapping chamber 62 63 is moved, for example, so as to avoid the passage leading to the outlet as shown. As a result, the objects to be demolished 610 classified as contaminants can be smoothly transported. As a result, lapping work and transport work can be performed smoothly.

Here, based on FIG. 10, the dismantling removal method of patent document 1 is demonstrated, and the superiority of this invention is clarified.
In Patent Document 1, the buildings are dismantled on a room-by-room basis, and are dismantled in descending order of management area level.

As shown in FIG. 10, the management area level is divided into level 1 area, level 2 area, and level 3 area depending on the degree of contamination. In the illustrated example, the contamination level increases in the order of L1<L2<L3.
Therefore, the management area levels are in the order of level 3 area L3>level 2 area L2>level 1 area L1 according to the contamination level.

Patent Literature 1 discloses a method of dismantling facilities while treating pollutants in-house. That is, in order to dismantle in the order of processing from the highest management area level to the lowest management area level in the process of processing, the first step is to dismantle and remove the level 3 area L3 (area A). In the second stage, the level 2 area L2 (area B) is then dismantled. The third and final step is to dismantle the level 1 area L1 (area C).

On the other hand, the dismantling and removal construction method of the present invention forms a temporary storage space for unloading the dismantled object near the exit regardless of the area divided into the PCB management area. The contaminants installed on the far side are dismantled and removed in order from the one closest to the exit. In other words, dismantling is carried out from the carry-out port (discharge route) toward the back while securing the handling space in order.

In the present invention, it is preferable to dismantle and remove PCB contaminants while preventing leakage to the outside. For that reason, regardless of the conventional management level, for example, the first stage is from the outside to the non-contaminated area inside the building (see Figure 2), and the second stage is from the non-contaminated area inside the building to the contaminated area. In the fifth stage (see FIGS. 4 to 7), it is also preferable to proceed with the dismantling work according to the area management divisions.

If there is no contaminant inside the building, it can be demolished by the conventional general building demolition method after confirming that there is no contaminant.

In the present invention, it is more rational to dismantle non-contaminated materials as well as contaminants if common scaffolding can be dismantled together. By doing so, the discharge space can be widened, and a large amount of stock can be retained. Therefore, there is no need to wait for carry-out adjustment, and continuous dismantling work is possible. In addition, since the space is widened, it is possible to carry out demolition work in various places in contact with it, and it is possible to shorten the process due to the increase in the amount of work.

The difference between the dismantling and removal construction method of Patent Document 1 and the effects of the present invention can be summarized as follows.

First, in the dismantling and removal method of Patent Document 1, in the state where high-concentration PCB exists, it is difficult to dismantle and remove while decontaminating from the high-contaminated area of the controlled area toward the low-contaminated area. On the other hand, in the present invention, high-concentration PCBs are already decontaminated and are dismantled and removed from the carry-out port toward the back in a state of being contaminated or non-contaminated with low-concentration PCBs. , the safety of the unloading work is ensured because the unloading is carried out from the area with the lowest contamination to the highest in the controlled area. Furthermore, the present invention enables the handling of dismantled objects in the absence of high-concentration PCBs, making it possible to prevent contamination.

Secondly, in the dismantling and removal method of Patent Document 1, the carry-out route and carry-out size are limited.

Thirdly, in the dismantling and removal method of Patent Document 1, there is no vacant land for carry-out stock, but in the present invention, there is an effect that a large space can be secured on the carry-out side (exit side).

Fourthly, in the dismantling and removal method of Patent Document 1, vacant lots are vacant from high-concentration areas, whereas in the present invention, there are many vacant lots, storage is possible, carrying out can be adjusted, and waiting time occurs at the time of carrying out. There is no effect.

Fifthly, in the dismantling and removal method of Patent Document 1, in-house treatment is the premise for the treatment of contaminated matter, whereas in the present invention, it is premised to be sent to a detoxification treatment facility.

Sixthly, in the dismantling and removal method of Patent Document 1, dismantling and removal are performed step by step for each management division, whereas in the present invention, multiple locations can be dismantled at the same time regardless of the management division, and contaminants can be removed. There is an effect that the transportation can be completed in a short period of time.

Seventhly, in the dismantling and removal method of Patent Document 1, everything from decontamination of contaminants to dismantling is carried out in-house, and as a result, the method inevitably takes time and effort to transport the dismantled object. In contrast to the long dismantling process, the present invention has an effect that the dismantling process can be completed in a short period of time.

Another preferred embodiment of the present invention will now be described.
Another preferred mode is to dismantle and remove the contaminants while using the existing ventilation and exhaust equipment without installing a shed tent covering the entire PCB processing facility. This aspect is shown in FIG.

In order to prevent PCB from leaking to the outside, there is a case where a shed tent is installed as shown in the left diagram of FIG. The left figure of FIG. 11 shows a mode in which a shed tent 8 is installed on top of a building 7, which is a temporary installation type. 9 is ventilation exhaust equipment.

However, if the outer wall of the building is solid and airtight, it is possible to maintain airtightness at the outer wall of the building, and the roof tent 8 is unnecessary. In the right view of FIG. 11, since the outer wall of the building is solid and airtight, it is possible to maintain the airtightness at the outer wall of the building, and the roof tent 8 is omitted. This mode is called an existing diversion type.

Compared to the case where a new temporary ventilation and exhaust system is installed at the time of demolition, as shown in the left diagram of FIG. 11, in the mode shown in the right diagram of FIG. Since it is managed, there is no need to install a shed tent, which is advantageous for shortening the construction period and economically.

As shown in the right figure of Fig. 11, the existing equipment is reused. In this case, no temporary ventilation and exhaust equipment is required.
In this embodiment, existing suction ducts 90 and discharge ducts 91 can be reused from each room introduced into the ventilation exhaust system 9 in the building 7, and temporary installation of new ducts is unnecessary.

In the demolition method for rooms with different management areas, if the control room pressure is set to be the same for each control room, it is possible to prevent re-scattering of PCB contaminants due to the air currents associated with the removal of partition walls, which is useful for preventing contamination. .

According to a preferred aspect of the present invention, the contaminants are dismantled and removed while using the existing ventilation and exhaust equipment without installing a shed tent covering the entire PCB processing facility.

To briefly explain the effects of this mode, firstly, by using the existing ventilation exhaust system, there is no scattering of harmful substances from the building when dismantling pollutants, and there is an effect of preventing environmental pollution to the neighborhood. be.

Secondly, in the case of installing a shed tent, it is necessary to newly install a temporary ventilation and exhaust system for the shed tent. No need to install.

Furthermore, thirdly, by using the outer wall of the existing building having strong airtightness, it is possible to obtain the same effect as installing a shed tent.

Fourthly, not only is the installation work of a shed tent a large-scale construction work, but also dozens of piles must be driven for the shed tent foundation work. Foundation work can be omitted. Also, it is possible to avoid a situation in which the shed tent itself becomes contaminated and becomes contaminated waste.

Furthermore, fifthly, according to the present invention, the existing living room can be used even during the pollutant dismantling period.

Sixthly, since the period during which the number of workers is the greatest during the construction period is during the period of dismantling the polluted materials, if the existing facilities can be used at this time, the temporary construction house can be small.

Furthermore, seventhly, after the dismantling and removal of the pollutants is completed, all the pollutants are carried out, and the remaining buildings and facilities become non-polluted buildings, so that they can be demolished by the same method as the demolition of general buildings.

In addition to the above effects, by using the existing ventilation equipment and creating a mechanism to create a room pressure difference between the highly contaminated area of the contaminated area 3 and the other areas by creating a negative pressure, the contamination Hazardous substances do not scatter from the contaminated area 3 to the non-contaminated area 2 during the dismantling of objects, and environmental pollution to the outside can be reliably prevented.

Furthermore, as shown in FIGS. 9 and 10 described above, when the wrapping room 62 is provided, the wrapping room 62 is installed in a part of the temporary storage space 6. is formed at the boundary of the , and preferably utilizes existing ventilation facilities for this.

By using the existing ventilation equipment between the lapping room 62 and the contaminated area 3 and the non-contaminated area 2, the contaminated area 3 has the most negative pressure, and the pressure is increased in the order of the lapping room 62 and the non-contaminated area 2. high to form a chamber pressure difference.

Furthermore, the non-polluted area is made to have a lower pressure than the atmosphere so that an air current is not generated between the non-polluted area 2 and the atmosphere. Specifically, since the temporary storage space 6 formed in the non-contaminated area becomes a boundary with the atmosphere via the outlet 4, the temporary storage space 6 is also provided with a room pressure difference with the outside (atmosphere), It is preferable to set the temporary storage space 6 so that the pressure is lower than the atmospheric pressure. This makes it possible to more reliably prevent pollutants from leaking into the atmosphere.

By constructing a mechanism that creates a difference in room pressure in this way, it is possible to appropriately control these differences in room pressure, prevent pollutants from leaking into the atmosphere under any circumstances, and reduce environmental pollution. can be reliably prevented.

1: PCB processing facility 2: Non-contaminated area 3: Contaminated area 4: Unloading exit 6: Temporary storage space 6a: Part of non-contaminated area 6b: Area reduced to non-contaminated level by decontamination treatment 7: Building 8: Shed tent 9: Ventilation and exhaust equipment 90: Suction ducts 91: Exhaust ducts 10: Building 61: Dismantling section 610: Object to be dismantled 62: Wrapping room 620: Carry-in door 621: Carry-out door 63: Object to be dismantled

Claims (8)

When dismantling and removing all objects to be dismantled, including equipment, devices, pipes, wiring, or buildings existing in the PCB processing facility,
Dismantling and removing the object to be dismantled to form a temporary storage space for temporarily placing the object to be dismantled in a non-contaminated area near the exit in the building of the PCB processing facility;
out of the objects to be dismantled, the objects to be dismantled classified as contaminants into the temporary storage space, and waiting for a predetermined period of time ;
The temporary storage space includes a part of the non-contaminated area and an area reduced to a non-contaminated level by decontamination treatment,
A method for dismantling and removing a PCB processing facility, characterized by: Among the objects to be demolished, the objects to be demolished classified as non-contaminated objects are removed from the objects to be demolished after the non-contaminated objects that hinder the carrying out of the contaminated objects are moved to a position away from the passage leading to the outlet. Carrying out the objects to be dismantled classified as contaminants to the temporary storage space;
The method for dismantling and removing a PCB processing facility according to claim 1 , characterized in that: Among the objects to be dismantled classified as non-contaminated objects, the non-contaminated objects that do not interfere with the passage leading to the discharge port for the contaminated objects are left, and the contaminated objects among the objects to be dismantled are placed in the temporary storage space. Carrying out the objects to be dismantled that have been classified into objects,
The method for dismantling and removing a PCB processing facility according to claim 1 or 2 , characterized in that: In a part of the temporary storage space, a wrapping room provided with a temporary door that does not open at the same time is provided.
The method for dismantling and removing a PCB processing facility according to claim 1 , characterized in that: The lapping room is provided in an area reduced to a non-contaminated level by the decontamination treatment,
The method for dismantling and removing a PCB processing facility according to claim 4 , characterized in that: A lapping machine is provided in the lapping chamber, and the lapping machine wraps the objects to be dismantled classified as the contaminants.
The method for dismantling and removing a PCB treatment facility according to claim 4 or 5 , characterized in that: Instead of installing a roof tent that covers the entire PCB processing facility, use the existing ventilation and exhaust equipment, create a negative pressure in the highly contaminated area of the contaminated area, and create a room pressure difference with other areas. Dismantling and removing the objects to be dismantled classified as the pollutants;
The method for dismantling and removing a PCB processing facility according to any one of claims 1 to 6 , characterized in that: Instead of installing a shed tent that covers the entire PCB processing facility, the existing ventilation and exhaust equipment is used, the pressure in the wrapping room is set to negative pressure, and a room pressure difference with the area other than the wrapping room is formed to prevent the contaminants from Wrapping the classified dismantling objects,
The method for dismantling and removing a PCB processing facility according to claim 4, 5 or 6 , characterized in that:

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