Abstract
The aim of this study was to acquire information for safely managing the work of removing sprayed asbestos-containing material (ACM). We carried out experiments on the environmental management of work to remove sprayed ACM at an actual building. The building was constructed in 1975 and has a large area as typically seen in Japanese factories. The building has a complex configuration, with 23 areas of different shapes where asbestos is to be removed. This sprayed ACM contains about 4% chrysotile. The removal work was managed by the ASP method which is authorized in Japan for removing ACM, especially sprayed ACM. From the results of our experiments, we drew the following conclusions: 1) The ASP method complies sufficiently with Japanese environmental laws, especially the Air Pollution Control Law. 2) The concentration of fibrous asbestos in the worker's breathing area is the highest when the worker is brushing away the rest of the sprayed ACM. 3) More than 80% of the worker's time is taken for creating the isolation area including the decontamination area and removing ACM.
