When buildings containing Asbestos are scrapped or under renovation work, we need to prevent asbestos fibers from scattering into the air, from the viewpoint preventing health problems of workers in construction industry and preventing air pollution. We safely process all asbestos-containing building materials from Level 1 to Level 3 under severe control.
Asbestos containing materials (Level 1)
There are three ways of treating method of Asbestos containing materials “removal” ,”containment” ,”enclosure”.
This method removes the existing layer of asbestos-containing spray material from the base, and this is generally the most recommended method.
The existing asbestos-containing spray material is left as it is, and the surface layer or the entire layer of the asbestos-containing spray material is completely covered, fixed, and fixed by impregnating the asbestos layer with a chemical or spraying a film-forming material. It is a construction method that prevents dust from scattering into the space where it is used. When the building is renovated or demolished in the future, it will be necessary to remove it again as a measure against asbestos.
It is a construction method to prevent dust scattering and damage by leaving the existing layer of asbestos-containing spray material as it is and completely covering it with a plate-like material so that the layer of asbestos-containing spray material is not exposed to the usage space.
Asbestos-containing heat insulating material（Level2）
When removing the molded pipe heat insulating material as it is, take measures to prevent asbestos from scattering by isolation curing (no negative pressure required) and moistening by watering. In addition, when removing the asbestos-containing chimney insulation material lined in the chimney, take measures for negative pressure isolation and curing, and then remove it by cutting.
Asbestos-containing molded board（Level3）
As a general rule, it is necessary to remove it as it is (remove bolts, nails, etc. and remove it manually) without cutting. If it is unavoidable to remove it with cutting, etc., moisten it before removing it. Of the asbestos-containing molded plates, etc., the calcium silicate plate type 1 has higher dispersal of asbestos fibers during crushing than other molded plates, etc., so before and during work involving cutting, etc. In addition to moistening the asbestos, isolation curing (no negative pressure required) is required.
Asbestos-containing finish coating material
Removal method
When removing asbestos-containing finish coating materials, it is necessary to moisten them in principle. Removal methods include high-pressure water washing removal, hand tool cleaning with a release agent, disc grinder removal for isolation and curing of the workplace, and disc grinder removal with a dust collector (with a HEPA filter).
Water clean method
Water clean SG method
