Don't hurt others, don't hurt yourself, and don't be hurt by others. This is the "three no injuries" in safety and an important content of safety education. "Don't hurt others" means that in production work, our own actions should not leave any security risks for others' work, let alone cause harm to others. This requires us to carry out every work carefully according to the safety operation rules, and consider whether our actions will cause hidden dangers to the safety of others. For example, when disassembling electrical equipment, if the thread is not wrapped as required, others may get an electric shock; If the grating plate is removed and not put back during maintenance, someone may fall; When you are working at high altitude, falling objects may hurt others and so on. If we think more about others in our work and ensure that our actions will not cause harm to others and will not cause potential safety hazards, we have already done this. "Don't hurt yourself" means that your work behavior should not hurt your health. In fact, the subjective desire of each of our employees is not willing to hurt themselves, but driven by some wrong consciousness, resulting in the consequences of hurting themselves, such as luck. Although I know that illegal operation is wrong, but driven by luck, I always think that there was no accident and danger in doing so before, and there will be no accident and danger now, so I am careless, desperate, greedy for convenience and make do with it. Working illegally is a common thing, which will lead to accidents and hurt yourself over time. If you want to avoid hurting yourself, you should follow the safety operation rules. When you work, you should consider whether your actions may cause harm to yourself, that is, you should think twice. "Don't be hurt by others" means to strengthen the ability of self-prevention and self-protection, that is, employees should judge the degree of danger and possible unsafe factors in their work environment, and use their own safety knowledge, technology, correct operation methods and necessary means to resolve the danger in time. For example, when doing cross homework, you should foresee the harm that others may cause to yourself and take preventive measures. When disassembling electrical equipment, it is necessary to prevent others from sending electricity by mistake and so on. We should seriously carry out the "Three Harms" education activities among all employees. If we do "three no injuries" in our work, and everyone is responsible for the safety of others, for themselves, for the personal safety of others and for their own safety, and form an atmosphere of "I am for everyone and everyone is for me" in personal safety, our safety work will go to a new level.