JP2007218059A - Asbestos removing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently perform work when removing asbestos of a ceiling part requiring a scaffold in a building. <P>SOLUTION: In curing, while eliminating cleaning labor by putting the scaffold in an unpolluted state by the asbestos by curing only an upper part of the scaffold not in the whole indoor space, a negative pressure/dust collector to be installed can be miniaturized, or the number can be reduced by reduction in a curing space. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for removing asbestos from a ceiling portion in a building.

  A conventional method for preventing asbestos divergence in removing asbestos from a ceiling portion that requires a scaffold will be described with reference to FIG. First, the floor curing 1A and the wall curing 1B are completely covered with a plastic sheet so that the entire indoor space is set as an isolation zone.

Next, the scaffold 2, the security zone 3, and the negative pressure / dust removal device 4 are installed. Here, the security zone is a general term for the changing room, the washing room, and the front room that are installed on the indoor side adjacent to the entrance to the outside of the isolation.
Construction Industry Occupational Accident Prevention Association “Prevention of Asbestos Disorders in Demolition and Renovation of Buildings”

  In the conventional method, since asbestos adheres to the scaffold during the asbestos removal work, it is necessary to perform cleaning for complete removal in a subsequent process, which is very laborious.

  Further, since the entire room is used as an isolation zone, it has been necessary to install a negative pressure / dust removal device having a large capacity enough to bring the entire room to an appropriate negative pressure.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and it is an object of the present invention to provide a method for removing asbestos that does not require cleaning of a scaffold and does not require the use of a large-capacity negative pressure / dust removal device. .

  In order to achieve the above objectives, the following measures will be taken to prevent the asbestos from spreading.

  First, a scaffold having a stage (hereinafter referred to as a “scaffold stage”) that makes it possible to remove asbestos in the entire area of the ceiling is installed.

  Next, curing is performed using the indoor space above the stage as an isolation zone. As for the curing method, if the scaffold stage is considered as a floor in the conventional method, it is carried out in exactly the same manner. About other implementation content, it carries out similarly to the conventional method.

  Here, the security zone is installed on the floor of the room in contact with the doorway, but a tunnel-like curing that allows workers to pass between the security zone and the isolation zone above the scaffolding stage is made and installed with a plastic sheet. To isolate it from the outside. Ladder etc. will be installed in this tunnel-shaped curing so that workers can climb up and down on the scaffolding stage.

  That is, in the asbestos removal method according to the present invention, in the asbestos removal work for the ceiling portion where the scaffold is necessary, after the stage-like scaffold is installed, only the room above the stage is cured to be the isolation zone. It has the characteristics of

  In addition, as a measure for preventing asbestos from spreading, a second feature is that a security zone and an isolation zone provided adjacent to the entrance and exit are connected by a tunnel-like curing.

  According to this method, since the scaffold stage is not contaminated with asbestos in the asbestos removal work, the cleaning work in the subsequent process can be omitted. In addition, since the scaffold stage is cured, it is possible to completely prevent normal dirt associated with the work. That is, if the scaffold stage and the space for installing the scaffold stage are cleaned in advance, the cleaning work in the subsequent process is completely unnecessary.

  Next, the capacity of the negative pressure / dust removal device can be reduced by changing the isolation zone from the entire conventional indoor space to the indoor space above the scaffold stage. That is, the negative pressure / dust removal device can be downsized or the number of installed devices can be reduced as compared with the conventional method.

  As an incidental effect, the conventional scaffold is generally a movable scaffold such as a rolling tower system in which a work floor is provided at the top of the tower and a wheel is attached to the lower end of the pedestal so that it can be moved by human power. Because of the small work space, there were many falling accidents, and there were problems with safety. Since the scaffold stage of the present invention has a wide work floor that makes it possible to remove asbestos in the entire region, it is highly safe.

  The best implementation method of the present invention will be described below with reference to FIG.

  After the scaffold stage 2 has been installed, a tunnel-shaped curing 1C for the purpose of connection with the curing 1C on the scaffolding stage, the curing on the wall surface 1B, and the security zone 3 is performed using a plastic sheet.

  However, in this example, the security zone 3 and the tunnel-shaped curing 1D are not directly connected, but another curing room 5 is provided between them. This curing room 5 is used as a place for temporarily storing waste asbestos packed in plastic bags. In addition, a ladder 6 for moving up and down to the scaffold stage is installed from the curing room 5 to the tunnel-shaped curing.

  Next, a negative pressure / dust removal apparatus 4 suitable for the capacity of the isolation space is installed.

It is the figure which showed the best form by this invention in the asbestos removal method. It is the figure which showed the conventional asbestos removal method.

Explanation of symbols

1A Floor curing 1B Wall curing 1C Curing on scaffolding stage 2 Scaffolding or scaffolding stage 3 Security zone 4 Negative pressure / dust removal device 5 Curing room 6 Ladder

Claims (2)

  An asbestos removal method characterized in that, in the asbestos removal work for a ceiling portion that requires a scaffold, after setting a stage-like scaffold, curing is performed so that only the room above the stage is set as an isolation zone.   A method for removing asbestos, characterized in that as a measure for preventing asbestos divergence, the security zone provided adjacent to the doorway and the isolation zone of claim 1 are connected by a tunnel-like curing.

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