1. In cold weather, people's hearing, vision, action will be affected, prone to frostbite, slip and other personal injury accidents
2. Deformation and rupture of the equipment and all structural parts, which may easily lead to leakage, explosion, fire and explosion accidents
3. In winter, the atmospheric pressure is in the state of cold and high pressure, and toxic and harmful gas is easy to accumulate in large quantities, resulting in human poisoning and fire and explosion accidents
4. In winter, the weather is dry which is easy to be on fire
5. Winter is at the end of the year, and there are many festivals, which are easy to induce unstable and unsafe factors.