Machine safety 机械安全

       * Guards in position 需有专人看管

       * Closed when machine running 当机器运转时关好保护装置

       * Interlocks 互锁

       * Jams and blocks 避免机器卡住

       * Isolation 做好绝缘隔离工作

       Substances hazardous to health 有害物质的隐患

       * Liquids 液体

       * Powders 粉末

       * Fumes 烟

       * Solids 固体

       * Gases 气体

       * Vapours 蒸汽

       * Dust 灰尘

       * Living organisms 生活垃圾 Chemical hazards 有害的化学物质