出版社：National Institute of Occupational Safety and Health
摘要：Following World War II, mechanized tools utilizing compressed air, electric motors and gasoline engines were introduced in various industries in Japan in order to achieve higher productivity and reduction of labor. Accordingly, many vibration hazards began to present themselves. In 1947, the Japanese Ministry of Labor recognized vibration hazards as an occupational disease. However, until the vibration hazards induced by using chain saws in national forestries became a serious social problem in 1965, no preventive measures were taken. In 1975, the Ministry of Labor decided to apply "the guidelines for counter-measures against vibration hazards" to six industries. Moreover, 1977, it allowed workers using 18 sorts of mechanized tools involving vibration exposure to seek protection under labor insurance regulations. In order to promote the countermeasures against vibration hazards, the Japan Association of Industrial Health organized "The Committee on Vibration Haz-ards" in 1977, and its activities continued for three years. This report is con-cerned with the studies of which the authors took partial charge among various committee projects. It has become clear that the extent and scope of present local vibration hazards in Japan, which were surveyed through case and epide-miological reports, as well as vibration and noise measurement, are extremely large.
