220 Current situation on the hygiene management of local government for preventing asbestos dispersal during building demolition

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IntroductionThe aim of this study is to improve the level of the hygiene management at asbestos demolition site. For this aim, we conducted a questionnaire survey to understand the differences in local governments’ efforts towards to the hygiene management. We consider that a good example of a local government must be a reference to others. Now, it is banned to use asbestos and asbestos-containing materials except temporary exemption for some uses. Asbestos survey and removal before the demolition of buildings are requested by the law. Measurement asbestos concentration in the air during the demolition is also requested. However, some cases were found where asbestos surveys were not perfect. Furthermore, asbestos dispersal in the demolition was confirmed in some cases. We would like to prevent the dispersal of asbestos into general environment.MethodsWe have conducted a questionnaire survey among 159 local governments that make onsite inspection at the time of the demolition.ResultOur analysis focuses mainly on how the system of the local government influences onsite inspection at the time of the demolition. The result of this survey shows current situation of onsite inspection (check with eyes, measurement of asbestos concentration in the air, instruction to demolition stuffs). In addition, we have made a study of the suitable asbestos measurement method adjusted to the demolition site. We also have considered cost-effectiveness of dispersal of asbestos.DiscussionOne of our key findings is difficulty of that all demolition sites are made onsite inspection by the local governments in the current government system. On the other hand, some local government make onsite inspection to all demolition sites with good systems and methods. We hope that these good systems and methods should.be shared to other local governments

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