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××工务段利用酚醛树脂胶粘合轨枕垫板,用于铁路工务部门,具有节约木材,减轻工人劳动强度、提高工效和线路质量等优点。该段于1978年11月开始投产,并自炼酚醛树脂胶。投产以来仅四个多月的时间,工人就反应在作业时间内,有难以忍受的上呼吸道刺激感、头晕、头痛、食欲下降、失眠等,并有发生皮炎者。为保护工人的健康,摸清危害情况,我们于1979年8月对该作业进行了卫生学调查。现将结果整理报告如下。一、现场调查 (一)生产工艺过程: 废旧枕木旋切成薄片→干燥→剪切拼片→涂胶叠板坯(采用苯磺酸为硬化剂)→加压保养→锯板
× × work section using phenolic resin adhesive sleeper pad for the railway sector, with the saving of timber, reduce labor intensity and improve the efficiency and line quality and so on. The section began production in November 1978, and since the phenolic resin glue. Just over four months after commissioning, workers react to unpleasant upper respiratory irritation, dizziness, headache, loss of appetite and insomnia during their working hours. Dermatitis occurs. To protect the health of workers and find out the hazards, we conducted a hygiene survey of the operation in August 1979. The results are now organized as follows. First, the scene investigation (A) of the production process: discarded sleepers peeling into thin slices → drying → cut pieces → paste laminated slab (using benzenesulfonic acid as a hardener) → pressure maintenance → saw blade