从五十年代开始,由于制粉工厂的粉尘爆炸事故。日本开始了防止带电的研究。其后,随着工业技术水平的提高,产业内容及结构的变化,大约每隔五年,防止静电灾害工作的重心就发生一次变革。最初,是着眼于印刷、纺织、胶片等行业。其后,又由防止高压变压器的绝缘被击穿,进展到石油系? From the 1950s onwards, due to a dust explosion at the milling plant. Japan started a study to prevent electrification. Later, with the improvement of industrial technology and changes in the content and structure of industries, a change took place about every five years, focusing on the prevention of electrostatic disasters. Initially, the focus is on printing, textile, film and other industries. Later, by preventing the breakdown of high-voltage transformer insulation, progress to the petroleum department?