JP2006089987A - Curing sheet set for temporary structure built for disposal of toxic substance generating facilities, including dismantling of incinerator, and temporary structure on which the curing sheet set is placed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a curing sheet set to be placed on a temporary structure built for disposal of facilities in which toxic substance like a dioxin is generated at the time of disposal, including dismantling of an incinerator, wherein the sheet set can prevent leakage of the dioxins from sheets covering a three dimensional work space of the temporary structure built at the time of execution of the dismantling work of the incinerator or the like, to the possible minimum extent, to thereby achieve effective prevention of secondary contamination of the atmosphere due to the dioxins, and to provide the temporary structure on which the curing sheet set is placed. <P>SOLUTION: The curing sheet set is formed of the plurality of curing sheets placed on the temporary structure built for disposal of the toxic substance generating facilities, including dismantling of the incinerator. The curing sheet set includes top surface sheets arranged on a top surface of the temporary structure, a plurality of side surface sheets arranged on side surfaces of the temporary structure, and a plurality of cover sheets for covering edges of the respective top surface sheets, edges of the respective side surface sheets, and the edge of the top surface sheet and the edge of the side surface sheet. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a curing sheet set for mounting on a temporary structure that treats equipment that generates hazardous substances such as dioxins during processing such as dismantling of an incinerator, and the curing sheet set is mounted It relates to a temporary structure.

  Generally, waste incineration facilities such as incinerators are equipped with incinerator bodies, flue equipment, dust removal equipment, smoke cooling equipment, smoke washing equipment, drainage treatment equipment, waste heat boilers, etc. These facilities may be contaminated with dioxins, and with the dismantling of these facilities, dioxins may spread throughout the workplace.

  For this reason, when dismantling the waste incineration facility, it is required to make sure that dioxin measures are taken indoors and outdoors in the demolition workshop and that safety measures for construction personnel (workers) are thoroughly implemented. ing. Therefore, how to take measures against dioxins at the time of dismantling of a waste incineration facility is an important issue, and various patent applications have been filed to solve such a problem.

For example, the invention according to Patent Document 1 below is a dismantling method for disassembling an incinerator apparatus whose peripheral wall is composed of an outer metal material and an inner refractory material, and a portion in which a coolant is brought into contact with a predetermined portion of the metal material. This is a method for dismantling an incinerator comprising: a step of cooling the outer metal wall of the steel plate to reduce impact strength; and a step of destroying the cooled portion by impact force to destroy the refractory material together with the metal material.
JP 2002-115821 A

Moreover, the invention which concerns on the following patent document 2 is a part of an incinerator, heats the contact part which contacts combustion gas using a combustion burner, performs the dioxin purification work of a contact part, and then from work environment and a contact part. This is an incineration facility demolition work method in which analysis work including dioxin analysis of collected deposits is performed, and then the incineration facility is dismantled.
JP2003-19412A

Furthermore, in the invention according to Patent Document 3, before the incineration facility dismantling work, the place where the harmful substances such as dioxins are attached in advance is irradiated with microwaves or ultraviolet rays, and after the dioxins are decomposed and removed, the incineration facility dismantling work is performed. This is a method for removing dioxins in dismantling and remodeling of incineration facilities.
JP2004-163071

  However, the invention according to Patent Literature 1 requires a coolant to be brought into contact with a metal material, the invention according to Patent Literature 2 requires a combustion burner to be heated, and the invention according to Patent Literature 3 irradiates microwaves or ultraviolet rays. All of them require special equipment, drugs, etc., and the cost for the work is high. Moreover, even if the primary contamination of dioxins in the work environment at the demolition workshop can be prevented, the secondary pollution of so-called dioxins by scattering outside the work environment at the demolition workshop and being released into the atmosphere Is currently not considered.

On the other hand, when dismantling work such as an incinerator, a structure is constructed using a rigid material such as a scaffolding pipe so as to surround the incinerator furnace to be dismantled, and a temporary structure is formed inside the temporary structure. The dismantling process is described in, for example, [0003], which is a prior art of the application specification of Patent Document 4 below. More specifically, in Patent Document 4 [0003], from the viewpoint of preventing secondary contamination of the dioxins as described above, the scaffold is covered with a rigid structure such as a scaffolding pipe and an airtight sheet covering the structure. It is disclosed.
JP 2003-22311 A

  However, the temporary structure composed of the rigid structure or the like has a three-dimensional work space, whereas an airtight sheet for covering such a three-dimensional work space is a two-dimensional structure. Therefore, it is theoretically difficult to actually cover the three-dimensional work space of the temporary structure with such an airtight sheet in a completely sealed state. In other words, as long as the temporary structure has a three-dimensional work space, it is actually impossible to cover the temporary structure with a single sheet. It is necessary to place a sheet.

  In fact, as shown in FIG. 19, the attachment of such a sheet to a pipe or the like is performed at the end of the sheet 20 and the string member 18 is inserted into the hole 16 in which the eyelet 17 is mounted. The string material 18 is attached by means such as binding the pipe 8, but the plurality of sheets 20, 20 are attached to the pipe 8 by binding the string material 18, respectively. As shown in FIG. 19, a gap 19 is inevitably formed between the sheet 20 and the sheet 20 in the vicinity of the pipe 8 to which the two are attached. For this reason, a fatal problem has arisen from the viewpoint of preventing secondary contamination that dioxins may leak from the gap.

  The present invention was made to solve such a problem, and prevents leakage of dioxins from the sheet covering the three-dimensional work space of the temporary structure installed during the dismantling work such as an incinerator as much as possible. As a result, the objective is to prevent the secondary pollution of air by dioxins.

  In order to solve such a problem, the present invention has been made as a curing sheet set in a temporary structure for treatment of harmful substance generation equipment such as dismantling of an incinerator, and a temporary structure to which the curing sheet set is attached. Therefore, the invention according to claim 1 relating to the curing sheet set is a curing sheet set comprising a plurality of curing sheets mounted on a temporary structure for processing harmful substance generation equipment such as dismantling of an incinerator, A top sheet installed on the top surface of the temporary structure, a plurality of side sheets installed on the side surface of the temporary structure, and between the end of the top sheet and the end of the top sheet A plurality of cover sheets mounted between the end of the side sheet and the end of the side sheet, or between the end of the top sheet and the end of the side sheet. To do.

  The invention according to claim 2 is the curing sheet set in the temporary structure of the hazardous substance generating facility according to claim 1, wherein the cover sheet and the top sheet or the side sheet are attached via a hook-and-loop fastener. It is made to be made.

  Further, the invention according to claim 3 relating to the temporary structure is characterized in that the curing sheet set according to claim 1 or 2 is mounted.

  In the present invention, as described above, between the end of the top sheet and the end of the top sheet, the end of the side sheet installed on the side surface of the temporary structure, and the end of the side sheet A cover sheet can be installed between the end of the top sheet and the end of the side sheet. Therefore, a hazardous substance generating facility such as an incinerator can be installed in the temporary structure. Hazardous substances such as dioxins generated during dismantling, etc. leak from the gaps between the top sheet, the gaps between the side sheets, or the gap between the top sheet and the side sheet. There is no fear and there is an effect that secondary contamination by harmful substances such as dioxins can be prevented more reliably.

  In addition, when the cover sheet and the top sheet or the side sheet are mounted via a hook-and-loop fastener, the cover sheet can be easily mounted at the dismantling site. There is an effect that can be.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The curing sheet set of the present embodiment is mounted on a temporary structure for dismantling of an incinerator as shown in FIGS. 13 to 16, for example, and has two types mounted on the top surface of the temporary structure for dismantling. From the top sheet 1a, 1b, two types of side sheets 2a, 2b, and the cover sheet 3 for covering between the adjacent end portions of the top sheet 1a, 1b and the side sheets 2a, 2b. It will be.

  The top sheet 1a, 1b and the side sheets 2a, 2b are all formed in a substantially rectangular shape, and are made of a polyolefin-based synthetic resin such as polyethylene or polypropylene. Of the two types of top sheet 1a, 1b, one top sheet 1a is provided with cover sheets 3,... On four sides as shown in FIG. The cover sheet 3 is also made of a polyolefin-based synthetic resin.

  As shown in FIGS. 2 and 3, the four cover sheets 3 are heat-welded to the end portions of the four sides of the top sheet 1 a in the overlapping portion 4. Moreover, as shown in FIG. 1 thru | or FIG. 3, the hook_and_loop | surface fastener 5 is provided in the edge part back surface side on the opposite side to the overlapping part 4 of each cover sheet | seat 3. As shown in FIG. Further, the short side end and the long side end of the top sheet 1a are folded to form folded portions 6, 6, 7, and 7, respectively. Although not shown in FIGS. 2 and 3, the folded portions 6, 6, 7, and 7 are provided with a large number of holes, and eyelets are attached to the holes.

  Further, as shown in FIG. 4, the other top sheet 1b is provided with cover sheets 3,... On three sides. As shown in FIGS. 5 and 6, the three cover sheets 3 are thermally welded to the end portions of the three sides of the top sheet 1 b in the overlapping portion 4. Moreover, as shown in FIG.5 and FIG.6, the hook_and_loop | surface fastener 5 is provided in the edge part back surface side on the opposite side to the overlapping part 4 of each cover sheet | seat 3. As shown in FIG. Furthermore, a hook-and-loop fastener 5 is provided on the surface side of the end portion on the long side where the cover sheet 3 is not mounted, as shown in FIGS.

  As in the case of the top surface sheet 1a, folded portions 6, 6, 7, and 7 are formed at the short side and long side end portions of the top surface sheet 1b, and a large number of holes are formed. The eyelet is worn. Further, of the two types of side sheets 2a and 2b, one side sheet 2a is provided with cover sheets 3 on two long sides as shown in FIG. The cover sheet 3 is also attached by heat welding at the overlapping portion 4 as shown in FIG. 8, and this is the same as in the case of the top sheet 1a, 1b.

  Moreover, as shown in FIG.7 and FIG.9, the hook_and_loop | surface fastener 5 is provided in the surface side of one edge part of the long side of the sheet | seat 2a for side surfaces. The portion where the hook-and-loop fastener 5 is provided is the side attached to the top sheet 1a, 1b, that is, the upper portion. Further, the cover sheet 3 and the hook-and-loop fastener 5 as described above are not provided at the other end portion on the long side of the side sheet 2a.

  Further, the cover sheet 3 is attached to one long side of the other side sheet 2b. The cover sheet 3 is also attached by heat welding at the overlapping portion 4 as shown in FIG. A hook-and-loop fastener 5 is provided on the surface side of the other long side end of the side sheet 2b and on the surface side of one short side end as shown in FIGS.

  Next, when the incinerator is dismantled in the temporary structure for dismantling the incinerator, the curing sheet set including the top sheet 1a, 1b and the side sheets 2a, 2b is used for dismantling the incinerator. The case where it mounts | wears with a temporary structure is demonstrated.

  First, a temporary structure 9 for dismantling an incinerator as an example to be seated is shown in FIGS. FIG. 13 is a view of the dismantling temporary structure 9 as seen from the plane. As shown in FIG. 13, pipes 8 are arranged around the four sides, Pipes 8 are arranged in the middle of the pipe 8 in parallel with the short side pipe 8. In FIG. 13, reference numeral 10 denotes an incinerator.

  FIG. 14 is a view of the dismantling temporary structure 9 as seen from the front. As shown in FIG. 14, a large number of pipes 8 are also arranged in the vertical direction (vertical direction). In addition, a large number of them are also arranged in an oblique direction. FIG. 15 is a view of the dismantling temporary structure 9 as viewed from the side, and also in this figure, it is shown that a large number of pipes 8 are arranged in the vertical direction and the oblique direction.

  FIG. 16 is a cross-sectional view taken along the line I-I in FIG. 13. In FIG. 16, it is shown that a work space 11 for dismantling the incinerator 10 is secured. That is, it was shown in FIG. 13 to FIG. 15 that a large number of pipes 8 are arranged in various directions, vertical and horizontal, and diagonal, but these are all peripheral parts of the temporary structure 9 for dismantling, In the central portion, a sufficient working space is secured as shown in FIG.

  The top surface sheets 1a and 1b are mounted on the top surface of the dismantling temporary structure 9, and the side sheets 2a and 2b are mounted on the four side surfaces of the dismantling temporary structure 9. The Rukoto.

  Assuming that the dismantling temporary structure 9 is divided into four block parts 12, 13, 14, and 15 shown in FIGS. 13 and 14, the top sheet of the block part 12 has a top sheet shown in FIG. 4 is disposed and mounted on the top surface portions of the block portions 13 and 14, respectively, and the top surface portion of the block portion 15 is mounted on the top surface portion shown in FIG. The face sheet 1b, which is slightly narrower than the top face sheet 1b attached to the block portions 13 and 14, is placed and attached. That is, one top sheet 1a and three top sheets 1b are used.

  Further, corresponding to the top sheet 1a, 1b as described above, the side surface portion of the dismantling temporary structure 9 is shown in FIG. 7 according to the dimensions of the block portions 12, 13, 14, 15. Thus, the side sheet 2a and the side sheet 2b shown in FIG. 10 are appropriately arranged and mounted. In this case, the side sheets 2a and 2b in which the cover sheet 3 and the hook-and-loop fastener 5 are attached to the left and right sides are also used as appropriate for the side sheet 2a shown in FIG. It will be.

  And when joining between the edge parts of the sheet | seat 1a for top | upper surfaces, and the sheet | seat 1b for top | upper surfaces, as shown in FIG. At the same time, the string material 18 that is also bound to the other top sheet 1b and the pipe 8 is bound. As shown in FIG. 17, holes 16 are formed in the end portions of the top sheet 1a and the top sheet 1b, respectively, and eyelets 17 are attached to the holes 16, and the string The material 18 is fixed to the pipe 8 by being inserted into the hole 16 in which the eyelet 17 is mounted and wound around the pipe 8.

  Further, the hook-and-loop fastener 5 provided on the back side of the one end side of the cover sheet 3 is bonded to the hook-and-loop fastener 5 provided on the surface side of the other top sheet 1b. At this time, since one end side of the cover sheet 3 is welded to one top surface sheet 1a in the overlapping portion 4, the surface fastener 5 on one end side is bonded to the other top surface sheet 1b as described above. By doing so, one top surface sheet 1a and the other top surface sheet 1b are connected.

  When one top sheet 1a and the other top sheet 1b are connected in this way, the edge of one top sheet 1a in the vicinity of the pipe 8 and the other as shown in FIG. The gap 19 between the edge of the top sheet 1b is closed by the cover sheet 3.

  That is, conventionally, even if the edges of two adjacent sheets are bound and fixed to a pipe with a string material, a gap is inevitably generated between the edges of the two sheets. There was a risk that dioxin or the like may leak, but in the present embodiment, the cover sheet 3 as described above causes a gap between the edge of one top surface sheet 1a and the other edge of the other top surface sheet 1b. Since the gap 19 is closed, there is no possibility that dioxins and the like leak from the gap 19, and so-called secondary contamination due to the dioxins and the like being diffused into the atmosphere is surely prevented.

  The connection structure between two adjacent sheets as shown in FIG. 17 is also applied to the side sheet. That is, the string member 18 is inserted into the hole 16 in which the eyelet 17 is attached and is bonded to the pipe 8 so that the edge of one side sheet 2a and the end of the other side sheet 2b are connected to the pipe 8. In addition, when the surface fastener 5 on the back surface on the one end side of the cover sheet 3 welded to the one side surface sheet 2a in the overlapping portion 4 is bonded to the surface fastener 5 on the front surface side of the other side surface sheet 1b, One side sheet 2a and the other side sheet 1b are connected.

  Also in this case, the gap between the edge of one side sheet 2a and the end of the other side sheet 2b in the vicinity of the pipe 8 due to the connection between one side sheet 2a and the other side sheet 2b. 19 is closed by the cover sheet 3, and leakage of dioxins and the like from the gap 19 is prevented.

  Furthermore, the same connection structure will be obtained also between the end edges of the top sheet 1a and the side sheet 2a (2b). That is, as shown in FIG. 18, the string member 18 is inserted into the hole 16 of the top sheet 1a and the side sheet 2a (2b) to which the eyelets 17 are attached, and is fixedly attached to the pipe 8; The cover sheet 3 is mounted over the top sheet 1a and the side sheet 2a (2b).

  In this case, the hook-and-loop fastener 5 is provided at both ends of the cover sheet 3, and the hook-and-loop fastener 5 is also provided at the end side of the top sheet 1a and the side sheet 2a (2b). The surface fasteners 5 at both ends of the sheet 3 are bonded to the surface fasteners 5 of the top sheet 1a and the side sheet 2a (2b), respectively, so that the top sheet 1a and the side sheet 2a (2b) Will be connected.

  When the top sheet 1a and the side sheet 2a (2b) are thus connected via the cover sheet 3, the edge and side surfaces of the top sheet 1a in the vicinity of the pipe 8 as shown in FIG. The gap 19 between the edge of the sheet 2a (2b) is closed by the cover sheet 3. Accordingly, there is no possibility that dioxins and the like leak from the gap 19 between the top sheet 1a and the side sheet 2a (2b).

  As described above, in the present embodiment, the gap 19 between the end portions of the top sheet 1a and the top sheet 1b, the gap 19 between the end portions of the side sheet 2a and the side sheet 2b, and the top surface Since any of the gaps 19 between the end portions of the sheet 1a and the side sheets 2a and 2b are covered with the cover sheet 3, it is possible to prevent dioxins and the like from leaking from any of these gaps 19. It becomes.

  As a result, when the dismantling work of the incinerator is performed in the temporary structure for dismantling, dioxins and the like are prevented from leaking to the outside of the temporary structure for dismantling, so secondary contamination with so-called dioxins and the like is preferable. It will be prevented.

  In the above embodiment, the curing sheet set is composed of the two types of top sheets 1a and 1b and the two types of side sheets 2a and 2b. However, the top sheet and the side sheets constituting the curing sheet set are described above. The type and number of sheets are not limited to the above embodiment, and the type and number of sheets are not limited. For example, the top sheet may be composed of only one sheet.

  In the embodiment, the top sheet 1a, 1b and the side sheets 2a, 2b are made of a polyolefin-based synthetic resin such as polyethylene or polypropylene, but the top sheet 1a, 1b or the side sheet. The materials 2a and 2b are not limited to the polyolefin-based synthetic resin of the embodiment. However, from the viewpoint of preventing environmental destruction during disposal, it is preferable to use a material other than polyvinyl chloride resin.

  Furthermore, the shapes of the top sheet 1a, 1b and the side sheets 2a, 2b are not limited to the substantially rectangular shape of the embodiment.

  Furthermore, in the above-described embodiment, as a means for detachably attaching one end side of the cover sheet 3 to the top sheet or the side sheet, the hook-and-loop fastener 5 is connected between the cover sheet 3 and the top sheet or the side sheet. The cover sheet is attached to the top sheet or the side sheet by providing the facing fastener 5 provided at the facing position, and the means for attaching the cover sheet is also provided by the surface fastener 5 of the embodiment. It is not limited to. However, when such a hook-and-loop fastener 5 is used, there is an advantage that the cover sheet can be easily mounted on the dismantling work site.

  Furthermore, as means for fixing the other end side of the cover sheet 3 to the top sheet and the side sheet in a non-removable manner, in the above embodiment, means by welding at the overlapping portion 4 is employed, but other means, For example, a means by sewing may be used.

  Furthermore, the form, structure, etc. of the temporary structure for dismantling as an object to which the curing sheet set is attached are not limited to those shown in FIGS.

  The curing sheet set of the present invention is mainly intended to be mounted on a temporary structure for dismantling when dismantling the incinerator as described above, but other than the dismantling of such an incinerator, For example, the present invention can be applied to a temporary structure for processing residual buried agricultural chemicals or potassium cyanide.

  In other words, residual buried pesticides are chlorinated organic pesticides that are currently banned as hazardous substances and are buried in the soil in concrete structures. When processing, dioxins may still be generated. However, by assembling the temporary structure as described above and mounting the curing sheet set as described above, leakage of dioxins to the outside of the temporary structure can be prevented as in the above embodiment. It is.

  The curing sheet set of the present invention can be widely applied to uses such as dismantling of an incinerator for mounting on a temporary structure that treats equipment that generates harmful substances such as dioxin when it is treated.

The schematic plan view of the sheet | seat for top | upper surfaces in the curing sheet set as one Embodiment. FIG. 2 is an enlarged cross-sectional view taken along line AA in FIG. 1. FIG. 2 is an enlarged cross-sectional view taken along the line B-B in FIG. 1. The schematic plan view of the sheet | seat for other top surfaces. FIG. 5 is an enlarged cross-sectional view taken along the line CC in FIG. 4. FIG. 5 is an enlarged cross-sectional view taken along line DD in FIG. 4. The schematic plan view of the sheet | seat for side surfaces in a curing sheet set. FIG. 8 is an enlarged cross-sectional view of an EE line middle omitted in FIG. 7. FIG. 8 is an enlarged cross-sectional view taken along the line FF in FIG. 7. The schematic plan view of the sheet | seat for other side surfaces. FIG. 11 is an enlarged cross-sectional view taken along line GG in FIG. 10. FIG. 11 is an enlarged cross-sectional view taken along line HH in FIG. 10. The schematic plan view which showed typically the temporary structure for dismantling of an incinerator. The schematic front view. The schematic side view. FIG. 14 is a cross-sectional view taken along the line I-I in FIG. 13. The principal part expanded sectional view which shows the junction part between top sheet | seats or between side sheet | seats. The principal part expanded sectional view which shows the junctional part of a top sheet and a side sheet. The principal part expanded sectional view which shows the conventional sheet | seat junction part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b ... Top sheet 2a, 2b ... Side sheet 3 ... Cover sheet 5 ... Hook fastener

Claims (3)

  It is a curing sheet set consisting of a plurality of curing sheets mounted on a temporary structure for hazardous substance generation equipment processing such as dismantling of an incinerator, and the top sheet installed on the top surface of the temporary structure; A plurality of side sheets installed on the side surface of the temporary structure, between the end of the top sheet and the end of the top sheet, between the end of the side sheet and the end of the side sheet, Or the curing sheet set in the temporary structure for hazardous substance generation equipment processing characterized by consisting of a plurality of cover sheets that are mounted across the end of the top sheet and the end of the side sheet.   The curing sheet set in the temporary structure for dismantling of the harmful substance generating facility such as an incinerator according to claim 1, wherein the cover sheet and the top sheet or the side sheet are attached via a hook-and-loop fastener.   A temporary structure for dismantling a hazardous substance generating facility such as an incinerator to which the curing sheet set according to claim 1 is mounted.

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