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在德国国营铁路中,为了防止可能广泛发生的噪声性听力损害,对发生噪声的工作,采取了特有的劳动卫生措施。在德国国营铁路的修配厂的主要发生噪声的车间,任何工种的噪声强度都超过规定的倍频带声压级允许曲线。这个允许曲线(BK80)是在1961年经ISO(国际标准化组织)的建议,并参照SLAWN曲线而制成的,而且要长期试用到订出车间的噪声强度最高允许曲线的国际标准时为止。图1为现在交通规则中采用的噪声评价数示意图,并从中选用BK80做为标准。据最新情报,ISO的N85现已被推荐为国际噪声强度最高允许曲线。 N85曲线是已经因推荐而被“建筑物理学的防护措施-声音防护”的互相救济事业组织
In the German state-owned railway, in order to prevent noise-induced hearing impairment that may occur extensively, special labor and hygiene measures have been taken for noise-generating work. In workshops where the noise at the German state-owned railway repair shop is mainly occurring, the noise level of any type of work exceeds the allowable curve for the sound pressure level of the octave. This allowance curve (BK80) was made in 1961 by ISO (International Organization for Standardization) recommendations, with reference to SLAWN curves, and long-term trials of international standards setting the maximum allowable curve of plant noise floor. Figure 1 is a schematic diagram of the number of noise evaluations used in the current traffic regulations, from which BK80 was chosen as the standard. According to the latest information, ISO’s N85 has now been recommended as the highest international noise intensity curve. N85 curve is already recommended as a result of “building physics protection - sound protection” mutual aid organizations