当有可能因为疏忽或意外操作引起事故的设备开启时，这样的所有设备必须上锁挂牌来避免这些事情发生。

All equipment shall be locked out or tagged out to protect against accidental or inadvertent operation when such operation could cause injury to personnel.

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设备现在已经挂牌上锁了。

The equipment is now locked out or tagged out.

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调查显示工作许可证，特 别是挂牌上锁程序并没有被有效地执行。

The investigation showed that the work license system, especially the locking procedure, had not been not well executed.

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