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编者:自1990年第6卷第7～8期刊出1989年颁发的国家卫生标准目录以来,不少读者来信询问标准的内容。为了满足读者的要求,我们将摘录部分标准的主要内容刊载,并就特殊部分给预介绍和解答。GB10438—89规定井下采掘作业地点气象条件:(1)于球温度不高于28℃,风速0.5～1.0m/s为上限; (2)干球温度不高于26℃,风速0.3～0.5m/s为至适;(3)干球温度不低于18℃,风速不大于0.3m/s,应增加工作服保暖量。以上测定对相对湿度不做规
Editor: Since Volume 6, Issue 7, 1990, pages 7-8 have been published in the catalog of National Health Criteria issued in 1989, many readers have asked for the standard content. In order to meet the reader’s requirements, we will excerpt some of the main contents of the standard published, and for special parts to introduce and answer. GB10438-89 specifies the meteorological conditions of underground mining operations: (1) the upper limit of the ball temperature is not higher than 28 ℃, the wind speed 0.5 ~ 1.0m / s; (2) the dry bulb temperature is not higher than 26 ℃, the wind speed 0.3 ~ 0.5m / s is suitable; (3) dry-bulb temperature is not less than 18 ℃, the wind speed is not greater than 0.3m / s, should increase the thermal insulation overalls. The above determination of relative humidity do not regulate