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一、钢绳厂的工伤事故频率贵州钢绳厂1977~1981年期间,发生工伤重事故共478人次。以国际上常用的百万作业小时负伤人数计,钢绳厂的工伤事故频率α平均为:
First, the frequency of work-related accidents in steel rope factory Steel wire rope factory in Guizhou during 1977 ~ 1981, a total of 478 heavy accidents caused by work-related injuries. Calculated by the number of work-days injuries per million jobs commonly used in the world, the average frequency of work-related injuries in a steel rope plant is α: