Use a wire sling of a greater S. W. L whenever the exact weight of the load is unknown or there is a hazard to personnel.

当无法确定载荷的准确重量或对人员存在危险时，使用大于安全工作负荷的钢丝绳。

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Oxygen concentrations in excess of 23% increase the hazard exposure to personnel and material.

氧浓度超过23%增加了暴露于其中的人员和材料的危险。

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The teams and groups to strengthen the control and management, indicating the nature or type of danger or hazard, standards, and other matters of attention, in order to alert the scene personnel.

各班组要强化控制管理，标明危险或危害的性质、类型、标准定量、注意事项等内容，以警示现场人员。

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