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制订生产环境空气中有害物质最高容许浓度是劳动卫生工作中一项十分重要的任务,是每个劳动卫生者不可推卸的责任,是保护劳动者健康、直接为生产服务,具有很大的经济效益的研科工作。我国于1956、1963、1979年曾先后三次制订、修订、增订和颁布了工业企业设计卫生标准,其中有关粉尘最高容许浓度从原有两种,到现在的九种。在尘肺防治实际工作中,多年应用和执行这个标准,确实已深入人心,起到了很大作用,立下了汗马功劳。五十年代初期,我们对工矿企业矽肺病是认识不足的,旧社会遗留下来金属矿山、石粉加工、玻璃制品厂等单位生产场所干式作业,粉尘浓度很大,多在几百～几千mg/m~3,矽肺发病
The maximum permissible concentration of harmful substances in the air for the production environment is a very important task in the work of health and sanitation. It is an unshirkable responsibility of every occupational health worker. It is of great economic benefit to protect the health of workers and serve them directly for production Research work. China in 1956, 1963, 1979 has three times to formulate, amend, update and promulgate industrial enterprises design health standards, of which the maximum allowable concentration of dust from the original two, to the present nine. In the actual work of pneumoconiosis prevention and control, many years of application and implementation of this standard have indeed gained deep support and played a significant role in establishing a merit. In the early 1950s, we did not know enough about silicosis in industrial and mining enterprises. The legacy of the old society was dry work in the production sites of metal mines, stone powder processing and glass products factories. The concentration of dust is very high, mostly in the hundreds to thousands of mg / m ~ 3, silicosis